Publications | Radio Technologies and Applications Group (GEA)

Journal Papers 2021 L. F. Herrán, A. Algaba Brazalez, and E. Rajo-Iglesias, “Ka-band planar slotted waveguide array based on groove gap waveguide technology with a glide-symmetric holey metasurface,” Sci Rep, vol. 11, no. 1, Art. no. 1, Apr. 2021, doi: 10.1038/s41598-021-88054-5. N. Castro, F. Pizarro, L. F. Herrán-Ontanón, and E. Rajo-Iglesias, “Evaluation of inverted microstrip gap waveguide bandpass filters for Ka-band,” AEU – International Journal of Electronics and Communications, vol. 134, p. 153677, May 2021, doi: 10.1016/j.aeue.2021.153677. N. Memeletzoglou and E. Rajo-Iglesias, “Array of stacked leaky-wave antennas in groove gap waveguide technology,” Scientific Reports, vol. 11, no. 1, Art. no. 1, Jan. 2021, doi: 10.1038/s41598-021-81640-7. 2020 C. Sanchez-Cabello, L. F. Herran, and E. Rajo-Iglesias, “Ka-Band Diplexer for 5G mmWave Applications in Inverted Microstrip Gap Waveguide Technology,” Electronics, vol. 9, no. 12, p. 2094, Dec. 2020, doi: 10.3390/electronics9122094. J.-Y. Wang, M. Ng Mou Kehn, and E. Rajo-Iglesias, “Design of a Planar Array of Low Profile Horns at 28 GHz,” Sensors, vol. 20, no. 23, Art. no. 23, Dec. 2020, doi: 10.3390/s20236989. Z. Sipus, K. Cavar, and E. Rajo-Iglesias, “Glide-Symmetric Holey Structures Applied to Waveguide Technology: Design Considerations,” Sensors, vol. 20, no. 23, p. 6871, Dec. 2020, doi: 10.3390/s20236871. C. Sánchez-Cabello, L. F. Herrán, A. U. Zaman, and E. Rajo-Iglesias, “Ka band microstrip fed slot array antenna with PMC packaging,” IET Microw. Antennas Propag., vol. 14, no. 14, pp. 1837–1845, Nov. 2020, doi: 10.1049/iet-map.2020.0565. O. Quevedo-Teruel, G. Valerio, Z. Sipus, and E. Rajo-Iglesias, “Periodic Structures With Higher Symmetries: Their Applications in Electromagnetic Devices,” IEEE Microw. Mag., vol. 21, no. 11, pp. 36–49, Nov. 2020, doi: 10.1109/MMM.2020.3014987. F. Pizarro, C. Sánchez-Cabello, J.-L. Vazquez-Roy, and E. Rajo-Iglesias, “Considerations of impedance sensitivity and losses in designing inverted microstrip gap waveguides,” Int J Electron Commun, vol. 124, p. 153353, Sep. 2020, doi: 10.1016/j.aeue.2020.153353. M. Ng Mou Kehn, C.-K. Hsieh, and E. Rajo-Iglesias, “Array of Horns Fed by a Transverse Slotted Groove Gap Waveguide at 28 GHz,” Sensors, vol. 20, no. 18, p. 5311, Sep. 2020, doi: 10.3390/s20185311. J. L. Vazquez-Roy, E. Rajo-Iglesias, G. Ulisse, and V. Krozer, “Design and Realization of a Band Pass Filter at D-band Using Gap Waveguide Technology,” J Infrared Millim Terahertz Waves, Aug. 2020, doi: 10.1007/s10762-020-00729-8. F. Pizarro, D. Ramírez-Gil, A. Algaba-Brazález, L. F. Herrán-Ontanón, and E. Rajo-Iglesias, “Comparison study of 4×4 Butler matrices in microstrip technologies for Ka-band,” Int J Electron Commun, vol. 122, p. 153248, Jul. 2020, doi: 10.1016/j.aeue.2020.153248. P. Stuardo, F. Pizarro, and E. Rajo-Iglesias, “3D-Printed Sievenpiper Metasurface Using Conductive Filaments,” Materials, vol. 13, no. 11, p. 2614, Jun. 2020, doi: 10.3390/ma13112614. J.-M. Poyanco, F. Pizarro, and E. Rajo-Iglesias, “3D-Printing for Transformation Optics in Electromagnetic High-Frequency Lens Applications,” Materials, vol. 13, no. 12, p. 2700, Jun. 2020, doi: 10.3390/ma13122700. 2019 E. Crespo-Bardera, M. Rodríguez, M. Sánchez-Fernández, E. Rajo-Iglesias, R. Feick, and R. A. Valenzuela, “Empirical Rates Characterization of Wearable Multi-Antenna Terminals for First-Responders,” IEEE Access, vol. 7, pp. 6990–7000, 2019, doi: 10.1109/ACCESS.2019.2890877. F. Pizarro, R. Salazar, E. Rajo-Iglesias, M. Rodríguez, S. Fingerhuth, and G. Hermosilla, “Parametric Study of 3D Additive Printing Parameters Using Conductive Filaments on Microwave Topologies,” IEEE Access, vol. 7, pp. 106814–106823, 2019, doi: 10.1109/ACCESS.2019.2932912. N. Memeletzoglou and E. Rajo-Iglesias, “Holey Metasurface Prism for the Reduction of the Dispersion of Gap Waveguide Leaky-Wave Antennas,” IEEE Antennas Wirel. Propag. Lett., vol. 18, no. 12, pp. 2582–2586, Dec. 2019, doi: 10.1109/LAWP.2019.2943812. J. L. Vazquez-Roy, A. Tamayo-Domínguez, E. Rajo-Iglesias, and M. Sierra-Castañer, “Radial Line Slot Antenna Design With Groove Gap Waveguide Feed for Monopulse Radar Systems,” IEEE Trans. Antennas Propag., vol. 67, no. 10, pp. 6317–6324, Oct. 2019, doi: 10.1109/TAP.2019.2922742. Q. Liao, E. Rajo-Iglesias, and O. Quevedo-Teruel, “$Ka$ -Band Fully Metallic TE40 Slot Array Antenna With Glide-Symmetric Gap Waveguide Technology,” IEEE Trans. Antennas Propag., vol. 67, no. 10, pp. 6410–6418, Oct. 2019, doi: 10.1109/TAP.2019.2922829. O. Quevedo-Teruel et al., “Roadmap on metasurfaces,” J Opt, vol. 21, no. 7, p. 073002, Jul. 2019, doi: 10.1088/2040-8986/ab161d. X. Zhang et al., “Two-dimensional MoS2-enabled flexible rectenna for Wi-Fi-band wireless energy harvesting,” Nature, vol. 566, no. 7744, pp. 368–372, Feb. 2019, doi: 10.1038/s41586-019-0892-1. N. Memeletzoglou, C. Sanchez-Cabello, F. Pizarro-Torres, and E. Rajo-Iglesias, “Analysis of Periodic Structures Made of Pins Inside a Parallel Plate Waveguide,” Symmetry, vol. 11, no. 4, p. 582, Apr. 2019, doi: 10.3390/sym11040582. 2018 D. Blanco and E. Rajo-Iglesias, “Wearable Fabry–Pérot Antenna,” IEEE Antennas Wirel. Propag. Lett., vol. 17, no. 1, pp. 106–109, Jan. 2018, doi: 10.1109/LAWP.2017.2777006. E. Rajo-Iglesias, M. Ferrando-Rocher, and A. U. Zaman, “Gap Waveguide Technology for Millimeter-Wave Antenna Systems,” IEEE Commun Mag, vol. 56, no. 7, pp. 14–20, Jul. 2018, doi: 10.1109/MCOM.2018.1700998. E. Rajo-Iglesias, M. Ebrahimpouri, and O. Quevedo-Teruel, “Wideband Phase Shifter in Groove Gap Waveguide Technology Implemented With Glide-Symmetric Holey EBG,” IEEE Microw Wirel Compon Lett, vol. 28, no. 6, pp. 476–478, Jun. 2018, doi: 10.1109/LMWC.2018.2832013. M. Ebrahimpouri, E. Rajo-Iglesias, Z. Sipus, and O. Quevedo-Teruel, “Cost-Effective Gap Waveguide Technology Based on Glide-Symmetric Holey EBG Structures,” IEEE Trans Microw Theory Tech, vol. 66, no. 2, pp. 927–934, Feb. 2018, doi: 10.1109/TMTT.2017.2764091. L. Wang, J. L. Gómez-Tornero, E. Rajo-Iglesias, and O. Quevedo-Teruel, “Low-Dispersive Leaky-Wave Antenna Integrated in Groove Gap Waveguide Technology,” IEEE Trans. Antennas Propag., vol. 66, no. 11, pp. 5727–5736, Nov. 2018, doi: 10.1109/TAP.2018.2863115. 2017 M. Sanchez-Fernandez, A. Tulino, E. Rajo-Iglesias, J. Llorca, and A. G. Armada, “Blended Antenna Wearables for an Unconstrained Mobile Experience,” IEEE Commun Mag, vol. 55, no. 4, pp. 160–168, Apr. 2017, doi: 10.1109/MCOM.2017.1500722. M. Ebrahimpouri, O. Quevedo-Teruel, and E. Rajo-Iglesias, “Design Guidelines for Gap Waveguide Technology Based on Glide-Symmetric Holey Structures,” IEEE Microw Wirel Compon Lett, vol. 27, no. 6, pp. 542–544, Jun. 2017, doi: 10.1109/LMWC.2017.2701308. 2016 D. Blanco, E. Rajo-Iglesias, A. Montesano Benito, and N. Llombart, “Leaky-Wave Thinned Phased Array in PCB Technology for Telecommunication Applications,” IEEE Trans. Antennas Propag., vol. 64, no. 10, pp. 4288–4296, Oct. 2016, doi: 10.1109/TAP.2016.2597642. M. Vukomanovic, J. Vazquez-Roy, O. Quevedo-Teruel, E. Rajo-Iglesias, and Z. Sipus, “Gap Waveguide Leaky-Wave Antenna,” IEEE Trans. Antennas Propag., vol. 64, no. 5, pp. 2055–2060, May 2016, doi: 10.1109/TAP.2016.2539376. 2015 A. A. Brazález, E. Rajo-Iglesias, J. L. Vázquez-Roy, A. Vosoogh, and P. Kildal, “Design and Validation of Microstrip Gap Waveguides and Their Transitions to Rectangular Waveguide, for Millimeter-Wave Applications,” IEEE Trans Microw Theory Tech, vol. 63, no. 12, pp. 4035–4050, Dec. 2015, doi: 10.1109/TMTT.2015.2495141. D. Blanco, E. Rajo-Iglesias, S. Maci, and N. Llombart, “Directivity Enhancement and Spurious Radiation Suppression in Leaky-Wave Antennas Using Inductive Grid Metasurfaces,” IEEE Trans. Antennas Propag., vol. 63, no. 3, pp. 891–900, Mar. 2015, doi: 10.1109/TAP.2014.2387422. 2014 E. Rajo-Iglesias, Ed., “ZigBee Radio Channel Analysis in a Complex Vehicular Environment [Wireless Corner],” IEEE Antennas Propag Mag, vol. 56, no. 4, pp. 232–232, Aug. 2014, doi: 10.1109/MAP.2014.6931704. D. Blanco, J. L. Gómez-Tornero, E. Rajo-Iglesias, and N. Llombart, “Radially Polarized Annular-Slot Leaky-Wave Antenna for Three-Dimensional Near-Field Microwave Focusing,” IEEE Antennas Wirel. Propag. Lett., vol. 13, pp. 583–586, 2014, doi: 10.1109/LAWP.2014.2311854. M. L. Pablo-González, M. Sánchez-Fernández, and E. Rajo-Iglesias, “Combination of the Three Types of Diversity to Design High-Capacity Compact MIMO Terminals,” IEEE Antennas Wirel. Propag. Lett., vol. 13, pp. 1309–1312, 2014, doi: 10.1109/LAWP.2014.2336174. D. Blanco, N. Llombart, and E. Rajo-Iglesias, “On the Use of Leaky Wave Phased Arrays for the Reduction of the Grating Lobe Level,” IEEE Trans. Antennas Propag., vol. 62, no. 4, pp. 1789–1795, Apr. 2014, doi: 10.1109/TAP.2013.2272573. E. Pucci, E. Rajo-Iglesias, J. Vázquez-Roy, and P. Kildal, “Planar Dual-Mode Horn Array With Corporate-Feed Network in Inverted Microstrip Gap Waveguide,” IEEE Trans. Antennas Propag., vol. 62, no. 7, pp. 3534–3542, Jul. 2014, doi: 10.1109/TAP.2014.2317496. E. Rajo-Iglesias, I. Gallego-Gallego, L. Inclan-Sanchez, and O. Quevedo-Teruel, “Textile Soft Surface for Back Radiation Reduction in Bent Wearable Antennas,” IEEE Trans. Antennas Propag., vol. 62, no. 7, pp. 3873–3878, Jul. 2014, doi: 10.1109/TAP.2014.2321133. 2013 E. Rajo-Iglesias, Ed., “A Complete Traceability System for a Wine Supply Chain Using Radio-Frequency Identification and Wireless Sensor Networks [Wireless Corner],” IEEE Antennas Propag Mag, vol. 55, no. 2, pp. 255–255, Apr. 2013, doi: 10.1109/MAP.2013.6529364. E. Rajo-Iglesias, Ed., “Wireless Corner [Introduction to ‘Path-Loss Model Including LOS-NLOS Transition Regions for Indoor Corridors at 5 GHz’],” IEEE Antennas Propag Mag, vol. 55, no. 3, pp. 217–217, Jun. 2013, doi: 10.1109/MAP.2013.6586667. E. Rajo-Iglesias, Ed., “Characterization and consideration of topological impact of wireless propagation in a commercial aircraft environment [wireless corner],” IEEE Antennas Propag Mag, vol. 55, no. 6, pp. 240–258, Dec. 2013, doi: 10.1109/MAP.2013.6781739. E. Rajo-Iglesias, E. Pucci, A. A. Kishk, and P. Kildal, “Suppression of Parallel Plate Modes in Low Frequency Microstrip Circuit Packages Using Lid of Printed Zigzag Wires,” IEEE Microw Wirel Compon Lett, vol. 23, no. 7, pp. 359–361, Jul. 2013, doi: 10.1109/LMWC.2013.2265257. O. Quevedo-Teruel, L. Inclán-Sánchez, J. Vazquez-Roy, and E. Rajo-Iglesias, “Compact Reconfigurable Planar EBGs Based on Short-Circuited Hairpin Resonators,” IEEE Microw Wirel Compon Lett, vol. 23, no. 9, pp. 462–464, Sep. 2013, doi: 10.1109/LMWC.2013.2274039. G. Robles, M. Sánchez-Fernández, R. Albarracín Sánchez, M. V. Rojas-Moreno, E. Rajo-Iglesias, and J. M. Martínez-Tarifa, “Antenna Parametrization for the Detection of Partial Discharges,” IEEE Trans Instrum Meas, vol. 62, no. 5, pp. 932–941, May 2013, doi: 10.1109/TIM.2012.2223332. D. Blanco, J. L. Gómez-Tornero, E. Rajo-Iglesias, and N. Llombart, “Holographic Surface Leaky-Wave Lenses With Circularly-Polarized Focused Near-Fields—Part II: Experiments and Description of Frequency Steering of Focal Length,” IEEE Trans. Antennas Propag., vol. 61, no. 7, pp. 3486–3494, Jul. 2013, doi: 10.1109/TAP.2013.2257645. E. Rajo-Iglesias and O. Quevedo-Teruel, “Tilting Radiation Patterns in Linear Arrays Without Phase Shifters,” IEEE Trans. Antennas Propag., vol. 61, no. 6, pp. 3360–3364, Jun. 2013, doi: 10.1109/TAP.2013.2247552. J. L. Gómez-Tornero, D. Blanco, E. Rajo-Iglesias, and N. Llombart, “Holographic Surface Leaky-Wave Lenses With Circularly-Polarized Focused Near-Fields—Part I: Concept, Design and Analysis Theory,” IEEE Trans. Antennas Propag., vol. 61, no. 7, pp. 3475–3485, Jul. 2013, doi: 10.1109/TAP.2013.2257644. E. Pucci, A. U. Zaman, E. Rajo-Iglesias, P. Kildal, and A. Kishk, “Study of Q-factors of ridge and groove gap waveguide resonators,” IET Microw. Antennas Propag., vol. 7, no. 11, pp. 900–908, Aug. 2013, doi: 10.1049/iet-map.2013.0081. 2012 J. L. Vazquez-Roy, V. Krozer, and J. Dall, “Wideband Dual-Polarization Microstrip Patch Antenna Array for Airborne Ice Sounder,” IEEE Antennas Propag Mag, vol. 54, no. 4, pp. 98–107, Aug. 2012, doi: 10.1109/MAP.2012.6309160. E. Rajo-Iglesias, Ed., “Sensing the Human User as a Part of Multiple-Antenna System Design [Wireless Corner],” IEEE Antennas Propag Mag, vol. 54, no. 5, pp. 231–237, Oct. 2012, doi: 10.1109/MAP.2012.6348162. E. Rajo-Iglesias, Ed., “Revision of the Methodology for Processing Radio Noise Measurements in the Medium-Wave Band [Wireless Corner],” IEEE Antennas Propag Mag, vol. 54, no. 6, pp. 214–226, Dec. 2012, doi: 10.1109/MAP.2012.6387824. E. Pucci, E. Rajo-Iglesias, M. Ng Mou Kehn, and O. Quevedo-Teruel, “Enhancing the Efficiency of Compact Patch Antennas Composed of Split-Ring Resonators by Using Lumped Capacitors,” IEEE Antennas Wirel. Propag. Lett., vol. 11, pp. 1362–1365, 2012, doi: 10.1109/LAWP.2012.2227662. E. Pucci, E. Rajo-Iglesias, and P. Kildal, “New Microstrip Gap Waveguide on Mushroom-Type EBG for Packaging of Microwave Components,” IEEE Microw Wirel Compon Lett, vol. 22, no. 3, pp. 129–131, Mar. 2012, doi: 10.1109/LMWC.2011.2182638. E. Rajo-Iglesias, P. Kildal, A. U. Zaman, and A. Kishk, “Bed of Springs for Packaging of Microstrip Circuits in the Microwave Frequency Range,” IEEE Trans Compon Packaging Manuf Technol, vol. 2, no. 10, pp. 1623–1628, Oct. 2012, doi: 10.1109/TCPMT.2012.2207957. 2011 M. Ng Mou Kehn, Ó. Quevedo-Teruel, and E. Rajo-Iglesias, “Reconfigurable Loaded Planar Inverted-F Antenna Using Varactor Diodes,” IEEE Antennas Wirel. Propag. Lett., vol. 10, pp. 466–468, 2011, doi: 10.1109/LAWP.2011.2153174. Ó. Quevedo-Teruel, M. Ng Mou Kehn, and E. Rajo-Iglesias, “Dual-Band Patch Antennas Based on Short-Circuited Split Ring Resonators,” IEEE Trans. Antennas Propag., vol. 59, no. 8, pp. 2758–2765, Aug. 2011, doi: 10.1109/TAP.2011.2158786. Ó. Quevedo-Teruel, Z. Sipus, and E. Rajo-Iglesias, “Characterization and Reduction of Mutual Coupling Between Stacked Patches,” IEEE Trans. Antennas Propag., vol. 59, no. 3, pp. 1031–1036, Mar. 2011, doi: 10.1109/TAP.2010.2103011. P. -. Kildal, A. U. Zaman, E. Rajo-Iglesias, E. Alfonso, and A. Valero-Nogueira, “Design and experimental verification of ridge gap waveguide in bed of nails for parallel-plate mode suppression,” IET Microw. Antennas Propag., vol. 5, no. 3, pp. 262–270, Feb. 2011, doi: 10.1049/iet-map.2010.0089. 2010 Ó. Quevedo-Teruel, M. Sánchez-Fernández, M. L. Pablo-González, and E. Rajo-Iglesias, “Alternating Radiation Patterns to Overcome Angle-of-Arrival Uncertainty [Wireless Corner],” IEEE Antennas Propag Mag, vol. 52, no. 1, pp. 236–242, Feb. 2010, doi: 10.1109/MAP.2010.5466456. Ó. Quevedo-Teruel, L. Inclan-Sanchez, and E. Rajo-Iglesias, “Soft Surfaces for Reducing Mutual Coupling Between Loaded PIFA Antennas,” IEEE Antennas Wirel. Propag. Lett., vol. 9, pp. 91–94, 2010, doi: 10.1109/LAWP.2010.2043632. E. Rajo-Iglesias, A. U. Zaman, and P. Kildal, “Parallel Plate Cavity Mode Suppression in Microstrip Circuit Packages Using a Lid of Nails,” IEEE Microw Wirel Compon Lett, vol. 20, no. 1, pp. 31–33, Jan. 2010, doi: 10.1109/LMWC.2009.2035960. E. de Lera Acedo, E. Garcia, V. González-Posadas, J. L. Vazquez-Roy, R. Maaskant, and D. Segovia, “Study and Design of a Differentially-Fed Tapered Slot Antenna Array,” IEEE Trans. Antennas Propag., vol. 58, no. 1, pp. 68–78, Jan. 2010, doi: 10.1109/TAP.2009.2036193. Ó. Quevedo-Teruel, E. Pucci, and E. Rajo-Iglesias, “Compact Loaded PIFA for Multifrequency Applications,” IEEE Trans. Antennas Propag., vol. 58, no. 3, pp. 656–664, Mar. 2010, doi: 10.1109/TAP.2009.2039305. C. J. Sánchez-Fernández, O. Quevedo-Teruel, J. Requena-Carrión, L. Inclán-Sánchez, and E. Rajo-Iglesias, “Dual-band microstrip patch antenna based on short-circuited ring and spiral resonators for implantable medical devices,” IET Microw. Antennas Propag., vol. 4, no. 8, pp. 1048–1055, Aug. 2010, doi: 10.1049/iet-map.2009.0594. 2009 E. Rajo-Iglesias, J. Fernandez, and M. Sierra-Castaner, “Hard Surfaces to Reduce Blockage in Thick Cylinders,” IEEE Antennas Wirel. Propag. Lett., vol. 8, pp. 1402–1405, 2009, doi: 10.1109/LAWP.2009.2039844. P. Kildal, E. Alfonso, A. Valero-Nogueira, and E. Rajo-Iglesias, “Local Metamaterial-Based Waveguides in Gaps Between Parallel Metal Plates,” IEEE Antennas Wirel. Propag. Lett., vol. 8, pp. 84–87, 2009, doi: 10.1109/LAWP.2008.2011147. E. Rajo-Iglesias, Ó. Quevedo-Teruel, and L. Inclan-Sanchez, “Planar Soft Surfaces and Their Application to Mutual Coupling Reduction,” IEEE Trans. Antennas Propag., vol. 57, no. 12, pp. 3852–3859, Dec. 2009, doi: 10.1109/TAP.2009.2024226. E. Rajo-Iglesias, Ó. Quevedo-Teruel, and M. N. M. Kehn, “Multiband SRR Loaded Rectangular Waveguide,” IEEE Trans. Antennas Propag., vol. 57, no. 5, pp. 1571–1575, May 2009, doi: 10.1109/TAP.2009.2016799. L. Inclan-Sanchez, J. Vazquez-Roy, and E. Rajo-Iglesias, “Proximity Coupled Microstrip Patch Antenna With Reduced Harmonic Radiation,” IEEE Trans. Antennas Propag., vol. 57, no. 1, pp. 27–32, Jan. 2009, doi: 10.1109/TAP.2008.2009654. E. Rajo-Iglesias, J. -. Vazquez-Roy, O. Quevedo-Teruel, and L. Inclan-Sanchez, “Dual band planar soft surfaces,” IET Microw. Antennas Propag., vol. 3, no. 5, pp. 742–748, Aug. 2009, doi: 10.1049/iet-map.2008.0146. O. Quevedo-Teruel, E. Rajo-Iglesias, and M. Ng Mou Kehn, “Numerical and experimental studies of split ring resonators loaded on the sidewalls of rectangular waveguides,” IET Microw. Antennas Propag., vol. 3, no. 8, pp. 1262–1270, Dec. 2009, doi: 10.1049/iet-map.2008.0313. 2008 M. N. M. Kehn, O. Quevedo-Teruel, and E. Rajo-Iglesias, “Split-ring resonator loaded waveguides with multiple stopbands,” Electron. Lett., vol. 44, no. 12, pp. 714–716, Jun. 2008, doi: 10.1049/el:20081108. O. Quevedo-Teruel and E. Rajo-Iglesias, “Inverted Mode Patch Antenna for Dual-Band Communications,” IEEE Antennas and Wireless Propagation Letters, vol. 7, pp. 792–794, 2008, doi: 10.1109/LAWP.2008.2001233. N. Herscovici, C. Christodoulou, E. Rajo-Iglesias, O. Quevedo-Teruel, and M. Sanchez-Fernandez, “Compact Multimode Patch Antennas for MIMO Applications [Wireless Corner],” IEEE Antennas Propag Mag, vol. 50, no. 2, pp. 197–205, Apr. 2008, doi: 10.1109/MAP.2008.4562418. E. Rajo-Iglesias, Ó. Quevedo-Teruel, and L. Inclan-Sanchez, “Mutual Coupling Reduction in Patch Antenna Arrays by Using a Planar EBG Structure and a Multilayer Dielectric Substrate,” IEEE Trans. Antennas Propag., vol. 56, no. 6, pp. 1648–1655, Jun. 2008, doi: 10.1109/TAP.2008.923306. L. Inclan-Sanchez, J. Vazquez-Roy, and E. Rajo-Iglesias, “High Isolation Proximity Coupled Multilayer Patch Antenna for Dual-Frequency Operation,” IEEE Trans. Antennas Propag., vol. 56, no. 4, pp. 1180–1183, Apr. 2008, doi: 10.1109/TAP.2008.919218. M. Sanchez-Fernandez, E. Rajo-Iglesias, O. Quevedo-Teruel, and M. L. Pablo-Gonzalez, “Spectral Efficiency in MIMO Systems Using Space and Pattern Diversities Under Compactness Constraints,” IEEE Trans. Veh. Technol., vol. 57, no. 3, pp. 1637–1645, May 2008, doi: 10.1109/TVT.2007.909279. E. Rajo-Iglesias, L. Inclan-Sanchez, and P. -. Kildal, “Comparison of bandwidths of mushroom-type electromagnetic bandgap surfaces and corrugated and strip-type soft surfaces when used as narrow ground planes,” IET Microw. Antennas Propag., vol. 2, no. 3, pp. 248–258, Apr. 2008, doi: 10.1049/iet-map:20070157. 2007 E. Rajo-Iglesias and O. Quevedo-Teruel, “Linear array synthesis using an ant-colony-optimization-based algorithm,” IEEE Antennas Propag Mag, vol. 49, no. 2, pp. 70–79, Apr. 2007, doi: 10.1109/MAP.2007.376644. E. Rajo-Iglesias, L. Inclan-Sanchez, J. Vazquez-Roy, and E. Garcia-Munoz, “Size Reduction of Mushroom-Type EBG Surfaces by Using Edge-Located Vias,” IEEE Microw Wirel Compon Lett, vol. 17, no. 9, pp. 670–672, Sep. 2007, doi: 10.1109/LMWC.2007.903456. O. Quevedo-Teruel, E. Rajo-Iglesias, and A. Oropesa-Garcia, “Hybrid Algorithms for Electromagnetic Problems and the No-Free-Lunch Framework,” IEEE Trans. Antennas Propag., vol. 55, no. 3, pp. 742–749, Mar. 2007, doi: 10.1109/TAP.2007.891569. E. Rajo-Iglesias, M. Caiazzo, L. Inclan-Sanchez, and P. -. Kildal, “Comparison of bandgaps of mushroom-type EBG surface and corrugated and strip-type soft surfaces,” IET Microw. Antennas Propag., vol. 1, no. 1, pp. 184–189, Feb. 2007, doi: 10.1049/iet-map:20050327. 2006 O. Quevedo-Teruel and E. Rajo-Iglesias, “Ant Colony Optimization in Thinned Array Synthesis With Minimum Sidelobe Level,” IEEE Antennas Wirel. Propag. Lett., vol. 5, pp. 349–352, 2006, doi: 10.1109/LAWP.2006.880693. O. Quevedo-Teruel and E. Rajo-Iglesias, “Design of Short-Circuited Ring-Patch Antennas Working at $hboxTM_01$ Mode Based on Neural Networks,” IEEE Antennas Wirel. Propag. Lett., vol. 5, pp. 559–562, 2006, doi: 10.1109/LAWP.2006.889559. V. Gonzalez-Posadas, D. Segovia-Vargas, E. Rajo-Iglesias, J. L. Vazquez-Roy, and C. Martin-Pascual, “Approximate analysis of short circuited ring patch antenna working at TM/sub 01/ mode,” IEEE Trans. Antennas Propag., vol. 54, no. 6, pp. 1875–1879, Jun. 2006, doi: 10.1109/TAP.2006.875925. 2002 E. Rajo-Iglesias, G. Villaseca-Sanchez, and C. Martin-Pascual, “Input impedance behavior in offset stacked patches,” IEEE Antennas Wirel. Propag. Lett., vol. 1, pp. 28–30, 2002, doi: 10.1109/LAWP.2002.802582.

Journal Papers

2021

L. F. Herrán, A. Algaba Brazalez, and E. Rajo-Iglesias, “Ka-band planar slotted waveguide array based on groove gap waveguide technology with a glide-symmetric holey metasurface,” Sci Rep, vol. 11, no. 1, Art. no. 1, Apr. 2021, doi: 10.1038/s41598-021-88054-5.

N. Castro, F. Pizarro, L. F. Herrán-Ontanón, and E. Rajo-Iglesias, “Evaluation of inverted microstrip gap waveguide bandpass filters for Ka-band,” AEU – International Journal of Electronics and Communications, vol. 134, p. 153677, May 2021, doi: 10.1016/j.aeue.2021.153677.
N. Memeletzoglou and E. Rajo-Iglesias, “Array of stacked leaky-wave antennas in groove gap waveguide technology,” Scientific Reports, vol. 11, no. 1, Art. no. 1, Jan. 2021, doi: 10.1038/s41598-021-81640-7.

2020

C. Sanchez-Cabello, L. F. Herran, and E. Rajo-Iglesias, “Ka-Band Diplexer for 5G mmWave Applications in Inverted Microstrip Gap Waveguide Technology,” Electronics, vol. 9, no. 12, p. 2094, Dec. 2020, doi: 10.3390/electronics9122094.

J.-Y. Wang, M. Ng Mou Kehn, and E. Rajo-Iglesias, “Design of a Planar Array of Low Profile Horns at 28 GHz,” Sensors, vol. 20, no. 23, Art. no. 23, Dec. 2020, doi: 10.3390/s20236989.

Z. Sipus, K. Cavar, and E. Rajo-Iglesias, “Glide-Symmetric Holey Structures Applied to Waveguide Technology: Design Considerations,” Sensors, vol. 20, no. 23, p. 6871, Dec. 2020, doi: 10.3390/s20236871.

C. Sánchez-Cabello, L. F. Herrán, A. U. Zaman, and E. Rajo-Iglesias, “Ka band microstrip fed slot array antenna with PMC packaging,” IET Microw. Antennas Propag., vol. 14, no. 14, pp. 1837–1845, Nov. 2020, doi: 10.1049/iet-map.2020.0565.

O. Quevedo-Teruel, G. Valerio, Z. Sipus, and E. Rajo-Iglesias, “Periodic Structures With Higher Symmetries: Their Applications in Electromagnetic Devices,” IEEE Microw. Mag., vol. 21, no. 11, pp. 36–49, Nov. 2020, doi: 10.1109/MMM.2020.3014987.

F. Pizarro, C. Sánchez-Cabello, J.-L. Vazquez-Roy, and E. Rajo-Iglesias, “Considerations of impedance sensitivity and losses in designing inverted microstrip gap waveguides,” Int J Electron Commun, vol. 124, p. 153353, Sep. 2020, doi: 10.1016/j.aeue.2020.153353.

M. Ng Mou Kehn, C.-K. Hsieh, and E. Rajo-Iglesias, “Array of Horns Fed by a Transverse Slotted Groove Gap Waveguide at 28 GHz,” Sensors, vol. 20, no. 18, p. 5311, Sep. 2020, doi: 10.3390/s20185311.

J. L. Vazquez-Roy, E. Rajo-Iglesias, G. Ulisse, and V. Krozer, “Design and Realization of a Band Pass Filter at D-band Using Gap Waveguide Technology,” J Infrared Millim Terahertz Waves, Aug. 2020, doi: 10.1007/s10762-020-00729-8.

F. Pizarro, D. Ramírez-Gil, A. Algaba-Brazález, L. F. Herrán-Ontanón, and E. Rajo-Iglesias, “Comparison study of 4×4 Butler matrices in microstrip technologies for Ka-band,” Int J Electron Commun, vol. 122, p. 153248, Jul. 2020, doi: 10.1016/j.aeue.2020.153248.

P. Stuardo, F. Pizarro, and E. Rajo-Iglesias, “3D-Printed Sievenpiper Metasurface Using Conductive Filaments,” Materials, vol. 13, no. 11, p. 2614, Jun. 2020, doi: 10.3390/ma13112614.

J.-M. Poyanco, F. Pizarro, and E. Rajo-Iglesias, “3D-Printing for Transformation Optics in Electromagnetic High-Frequency Lens Applications,” Materials, vol. 13, no. 12, p. 2700, Jun. 2020, doi: 10.3390/ma13122700.

2019

E. Crespo-Bardera, M. Rodríguez, M. Sánchez-Fernández, E. Rajo-Iglesias, R. Feick, and R. A. Valenzuela, “Empirical Rates Characterization of Wearable Multi-Antenna Terminals for First-Responders,” IEEE Access, vol. 7, pp. 6990–7000, 2019, doi: 10.1109/ACCESS.2019.2890877.

F. Pizarro, R. Salazar, E. Rajo-Iglesias, M. Rodríguez, S. Fingerhuth, and G. Hermosilla, “Parametric Study of 3D Additive Printing Parameters Using Conductive Filaments on Microwave Topologies,” IEEE Access, vol. 7, pp. 106814–106823, 2019, doi: 10.1109/ACCESS.2019.2932912.

N. Memeletzoglou and E. Rajo-Iglesias, “Holey Metasurface Prism for the Reduction of the Dispersion of Gap Waveguide Leaky-Wave Antennas,” IEEE Antennas Wirel. Propag. Lett., vol. 18, no. 12, pp. 2582–2586, Dec. 2019, doi: 10.1109/LAWP.2019.2943812.

J. L. Vazquez-Roy, A. Tamayo-Domínguez, E. Rajo-Iglesias, and M. Sierra-Castañer, “Radial Line Slot Antenna Design With Groove Gap Waveguide Feed for Monopulse Radar Systems,” IEEE Trans. Antennas Propag., vol. 67, no. 10, pp. 6317–6324, Oct. 2019, doi: 10.1109/TAP.2019.2922742.

Q. Liao, E. Rajo-Iglesias, and O. Quevedo-Teruel, “$Ka$ -Band Fully Metallic TE40 Slot Array Antenna With Glide-Symmetric Gap Waveguide Technology,” IEEE Trans. Antennas Propag., vol. 67, no. 10, pp. 6410–6418, Oct. 2019, doi: 10.1109/TAP.2019.2922829.

O. Quevedo-Teruel et al., “Roadmap on metasurfaces,” J Opt, vol. 21, no. 7, p. 073002, Jul. 2019, doi: 10.1088/2040-8986/ab161d.

X. Zhang et al., “Two-dimensional MoS2-enabled flexible rectenna for Wi-Fi-band wireless energy harvesting,” Nature, vol. 566, no. 7744, pp. 368–372, Feb. 2019, doi: 10.1038/s41586-019-0892-1.

N. Memeletzoglou, C. Sanchez-Cabello, F. Pizarro-Torres, and E. Rajo-Iglesias, “Analysis of Periodic Structures Made of Pins Inside a Parallel Plate Waveguide,” Symmetry, vol. 11, no. 4, p. 582, Apr. 2019, doi: 10.3390/sym11040582.

2018

D. Blanco and E. Rajo-Iglesias, “Wearable Fabry–Pérot Antenna,” IEEE Antennas Wirel. Propag. Lett., vol. 17, no. 1, pp. 106–109, Jan. 2018, doi: 10.1109/LAWP.2017.2777006.

E. Rajo-Iglesias, M. Ferrando-Rocher, and A. U. Zaman, “Gap Waveguide Technology for Millimeter-Wave Antenna Systems,” IEEE Commun Mag, vol. 56, no. 7, pp. 14–20, Jul. 2018, doi: 10.1109/MCOM.2018.1700998.

E. Rajo-Iglesias, M. Ebrahimpouri, and O. Quevedo-Teruel, “Wideband Phase Shifter in Groove Gap Waveguide Technology Implemented With Glide-Symmetric Holey EBG,” IEEE Microw Wirel Compon Lett, vol. 28, no. 6, pp. 476–478, Jun. 2018, doi: 10.1109/LMWC.2018.2832013.

M. Ebrahimpouri, E. Rajo-Iglesias, Z. Sipus, and O. Quevedo-Teruel, “Cost-Effective Gap Waveguide Technology Based on Glide-Symmetric Holey EBG Structures,” IEEE Trans Microw Theory Tech, vol. 66, no. 2, pp. 927–934, Feb. 2018, doi: 10.1109/TMTT.2017.2764091.

L. Wang, J. L. Gómez-Tornero, E. Rajo-Iglesias, and O. Quevedo-Teruel, “Low-Dispersive Leaky-Wave Antenna Integrated in Groove Gap Waveguide Technology,” IEEE Trans. Antennas Propag., vol. 66, no. 11, pp. 5727–5736, Nov. 2018, doi: 10.1109/TAP.2018.2863115.

2017

M. Sanchez-Fernandez, A. Tulino, E. Rajo-Iglesias, J. Llorca, and A. G. Armada, “Blended Antenna Wearables for an Unconstrained Mobile Experience,” IEEE Commun Mag, vol. 55, no. 4, pp. 160–168, Apr. 2017, doi: 10.1109/MCOM.2017.1500722.

M. Ebrahimpouri, O. Quevedo-Teruel, and E. Rajo-Iglesias, “Design Guidelines for Gap Waveguide Technology Based on Glide-Symmetric Holey Structures,” IEEE Microw Wirel Compon Lett, vol. 27, no. 6, pp. 542–544, Jun. 2017, doi: 10.1109/LMWC.2017.2701308.

2016

D. Blanco, E. Rajo-Iglesias, A. Montesano Benito, and N. Llombart, “Leaky-Wave Thinned Phased Array in PCB Technology for Telecommunication Applications,” IEEE Trans. Antennas Propag., vol. 64, no. 10, pp. 4288–4296, Oct. 2016, doi: 10.1109/TAP.2016.2597642.

M. Vukomanovic, J. Vazquez-Roy, O. Quevedo-Teruel, E. Rajo-Iglesias, and Z. Sipus, “Gap Waveguide Leaky-Wave Antenna,” IEEE Trans. Antennas Propag., vol. 64, no. 5, pp. 2055–2060, May 2016, doi: 10.1109/TAP.2016.2539376.

2015

A. A. Brazález, E. Rajo-Iglesias, J. L. Vázquez-Roy, A. Vosoogh, and P. Kildal, “Design and Validation of Microstrip Gap Waveguides and Their Transitions to Rectangular Waveguide, for Millimeter-Wave Applications,” IEEE Trans Microw Theory Tech, vol. 63, no. 12, pp. 4035–4050, Dec. 2015, doi: 10.1109/TMTT.2015.2495141.

D. Blanco, E. Rajo-Iglesias, S. Maci, and N. Llombart, “Directivity Enhancement and Spurious Radiation Suppression in Leaky-Wave Antennas Using Inductive Grid Metasurfaces,” IEEE Trans. Antennas Propag., vol. 63, no. 3, pp. 891–900, Mar. 2015, doi: 10.1109/TAP.2014.2387422.

2014

E. Rajo-Iglesias, Ed., “ZigBee Radio Channel Analysis in a Complex Vehicular Environment [Wireless Corner],” IEEE Antennas Propag Mag, vol. 56, no. 4, pp. 232–232, Aug. 2014, doi: 10.1109/MAP.2014.6931704.

D. Blanco, J. L. Gómez-Tornero, E. Rajo-Iglesias, and N. Llombart, “Radially Polarized Annular-Slot Leaky-Wave Antenna for Three-Dimensional Near-Field Microwave Focusing,” IEEE Antennas Wirel. Propag. Lett., vol. 13, pp. 583–586, 2014, doi: 10.1109/LAWP.2014.2311854.

M. L. Pablo-González, M. Sánchez-Fernández, and E. Rajo-Iglesias, “Combination of the Three Types of Diversity to Design High-Capacity Compact MIMO Terminals,” IEEE Antennas Wirel. Propag. Lett., vol. 13, pp. 1309–1312, 2014, doi: 10.1109/LAWP.2014.2336174.

D. Blanco, N. Llombart, and E. Rajo-Iglesias, “On the Use of Leaky Wave Phased Arrays for the Reduction of the Grating Lobe Level,” IEEE Trans. Antennas Propag., vol. 62, no. 4, pp. 1789–1795, Apr. 2014, doi: 10.1109/TAP.2013.2272573.

E. Pucci, E. Rajo-Iglesias, J. Vázquez-Roy, and P. Kildal, “Planar Dual-Mode Horn Array With Corporate-Feed Network in Inverted Microstrip Gap Waveguide,” IEEE Trans. Antennas Propag., vol. 62, no. 7, pp. 3534–3542, Jul. 2014, doi: 10.1109/TAP.2014.2317496.

E. Rajo-Iglesias, I. Gallego-Gallego, L. Inclan-Sanchez, and O. Quevedo-Teruel, “Textile Soft Surface for Back Radiation Reduction in Bent Wearable Antennas,” IEEE Trans. Antennas Propag., vol. 62, no. 7, pp. 3873–3878, Jul. 2014, doi: 10.1109/TAP.2014.2321133.

2013

E. Rajo-Iglesias, Ed., “A Complete Traceability System for a Wine Supply Chain Using Radio-Frequency Identification and Wireless Sensor Networks [Wireless Corner],” IEEE Antennas Propag Mag, vol. 55, no. 2, pp. 255–255, Apr. 2013, doi: 10.1109/MAP.2013.6529364.

E. Rajo-Iglesias, Ed., “Wireless Corner [Introduction to ‘Path-Loss Model Including LOS-NLOS Transition Regions for Indoor Corridors at 5 GHz’],” IEEE Antennas Propag Mag, vol. 55, no. 3, pp. 217–217, Jun. 2013, doi: 10.1109/MAP.2013.6586667.

E. Rajo-Iglesias, Ed., “Characterization and consideration of topological impact of wireless propagation in a commercial aircraft environment [wireless corner],” IEEE Antennas Propag Mag, vol. 55, no. 6, pp. 240–258, Dec. 2013, doi: 10.1109/MAP.2013.6781739.

E. Rajo-Iglesias, E. Pucci, A. A. Kishk, and P. Kildal, “Suppression of Parallel Plate Modes in Low Frequency Microstrip Circuit Packages Using Lid of Printed Zigzag Wires,” IEEE Microw Wirel Compon Lett, vol. 23, no. 7, pp. 359–361, Jul. 2013, doi: 10.1109/LMWC.2013.2265257.

O. Quevedo-Teruel, L. Inclán-Sánchez, J. Vazquez-Roy, and E. Rajo-Iglesias, “Compact Reconfigurable Planar EBGs Based on Short-Circuited Hairpin Resonators,” IEEE Microw Wirel Compon Lett, vol. 23, no. 9, pp. 462–464, Sep. 2013, doi: 10.1109/LMWC.2013.2274039.

G. Robles, M. Sánchez-Fernández, R. Albarracín Sánchez, M. V. Rojas-Moreno, E. Rajo-Iglesias, and J. M. Martínez-Tarifa, “Antenna Parametrization for the Detection of Partial Discharges,” IEEE Trans Instrum Meas, vol. 62, no. 5, pp. 932–941, May 2013, doi: 10.1109/TIM.2012.2223332.

D. Blanco, J. L. Gómez-Tornero, E. Rajo-Iglesias, and N. Llombart, “Holographic Surface Leaky-Wave Lenses With Circularly-Polarized Focused Near-Fields—Part II: Experiments and Description of Frequency Steering of Focal Length,” IEEE Trans. Antennas Propag., vol. 61, no. 7, pp. 3486–3494, Jul. 2013, doi: 10.1109/TAP.2013.2257645.

E. Rajo-Iglesias and O. Quevedo-Teruel, “Tilting Radiation Patterns in Linear Arrays Without Phase Shifters,” IEEE Trans. Antennas Propag., vol. 61, no. 6, pp. 3360–3364, Jun. 2013, doi: 10.1109/TAP.2013.2247552.

J. L. Gómez-Tornero, D. Blanco, E. Rajo-Iglesias, and N. Llombart, “Holographic Surface Leaky-Wave Lenses With Circularly-Polarized Focused Near-Fields—Part I: Concept, Design and Analysis Theory,” IEEE Trans. Antennas Propag., vol. 61, no. 7, pp. 3475–3485, Jul. 2013, doi: 10.1109/TAP.2013.2257644.

E. Pucci, A. U. Zaman, E. Rajo-Iglesias, P. Kildal, and A. Kishk, “Study of Q-factors of ridge and groove gap waveguide resonators,” IET Microw. Antennas Propag., vol. 7, no. 11, pp. 900–908, Aug. 2013, doi: 10.1049/iet-map.2013.0081.

2012

J. L. Vazquez-Roy, V. Krozer, and J. Dall, “Wideband Dual-Polarization Microstrip Patch Antenna Array for Airborne Ice Sounder,” IEEE Antennas Propag Mag, vol. 54, no. 4, pp. 98–107, Aug. 2012, doi: 10.1109/MAP.2012.6309160.

E. Rajo-Iglesias, Ed., “Sensing the Human User as a Part of Multiple-Antenna System Design [Wireless Corner],” IEEE Antennas Propag Mag, vol. 54, no. 5, pp. 231–237, Oct. 2012, doi: 10.1109/MAP.2012.6348162.

E. Rajo-Iglesias, Ed., “Revision of the Methodology for Processing Radio Noise Measurements in the Medium-Wave Band [Wireless Corner],” IEEE Antennas Propag Mag, vol. 54, no. 6, pp. 214–226, Dec. 2012, doi: 10.1109/MAP.2012.6387824.

E. Pucci, E. Rajo-Iglesias, M. Ng Mou Kehn, and O. Quevedo-Teruel, “Enhancing the Efficiency of Compact Patch Antennas Composed of Split-Ring Resonators by Using Lumped Capacitors,” IEEE Antennas Wirel. Propag. Lett., vol. 11, pp. 1362–1365, 2012, doi: 10.1109/LAWP.2012.2227662.

E. Pucci, E. Rajo-Iglesias, and P. Kildal, “New Microstrip Gap Waveguide on Mushroom-Type EBG for Packaging of Microwave Components,” IEEE Microw Wirel Compon Lett, vol. 22, no. 3, pp. 129–131, Mar. 2012, doi: 10.1109/LMWC.2011.2182638.

E. Rajo-Iglesias, P. Kildal, A. U. Zaman, and A. Kishk, “Bed of Springs for Packaging of Microstrip Circuits in the Microwave Frequency Range,” IEEE Trans Compon Packaging Manuf Technol, vol. 2, no. 10, pp. 1623–1628, Oct. 2012, doi: 10.1109/TCPMT.2012.2207957.

2011

M. Ng Mou Kehn, Ó. Quevedo-Teruel, and E. Rajo-Iglesias, “Reconfigurable Loaded Planar Inverted-F Antenna Using Varactor Diodes,” IEEE Antennas Wirel. Propag. Lett., vol. 10, pp. 466–468, 2011, doi: 10.1109/LAWP.2011.2153174.

Ó. Quevedo-Teruel, M. Ng Mou Kehn, and E. Rajo-Iglesias, “Dual-Band Patch Antennas Based on Short-Circuited Split Ring Resonators,” IEEE Trans. Antennas Propag., vol. 59, no. 8, pp. 2758–2765, Aug. 2011, doi: 10.1109/TAP.2011.2158786.

Ó. Quevedo-Teruel, Z. Sipus, and E. Rajo-Iglesias, “Characterization and Reduction of Mutual Coupling Between Stacked Patches,” IEEE Trans. Antennas Propag., vol. 59, no. 3, pp. 1031–1036, Mar. 2011, doi: 10.1109/TAP.2010.2103011.

P. -. Kildal, A. U. Zaman, E. Rajo-Iglesias, E. Alfonso, and A. Valero-Nogueira, “Design and experimental verification of ridge gap waveguide in bed of nails for parallel-plate mode suppression,” IET Microw. Antennas Propag., vol. 5, no. 3, pp. 262–270, Feb. 2011, doi: 10.1049/iet-map.2010.0089.

2010

Ó. Quevedo-Teruel, M. Sánchez-Fernández, M. L. Pablo-González, and E. Rajo-Iglesias, “Alternating Radiation Patterns to Overcome Angle-of-Arrival Uncertainty [Wireless Corner],” IEEE Antennas Propag Mag, vol. 52, no. 1, pp. 236–242, Feb. 2010, doi: 10.1109/MAP.2010.5466456.

Ó. Quevedo-Teruel, L. Inclan-Sanchez, and E. Rajo-Iglesias, “Soft Surfaces for Reducing Mutual Coupling Between Loaded PIFA Antennas,” IEEE Antennas Wirel. Propag. Lett., vol. 9, pp. 91–94, 2010, doi: 10.1109/LAWP.2010.2043632.

E. Rajo-Iglesias, A. U. Zaman, and P. Kildal, “Parallel Plate Cavity Mode Suppression in Microstrip Circuit Packages Using a Lid of Nails,” IEEE Microw Wirel Compon Lett, vol. 20, no. 1, pp. 31–33, Jan. 2010, doi: 10.1109/LMWC.2009.2035960.

E. de Lera Acedo, E. Garcia, V. González-Posadas, J. L. Vazquez-Roy, R. Maaskant, and D. Segovia, “Study and Design of a Differentially-Fed Tapered Slot Antenna Array,” IEEE Trans. Antennas Propag., vol. 58, no. 1, pp. 68–78, Jan. 2010, doi: 10.1109/TAP.2009.2036193.

Ó. Quevedo-Teruel, E. Pucci, and E. Rajo-Iglesias, “Compact Loaded PIFA for Multifrequency Applications,” IEEE Trans. Antennas Propag., vol. 58, no. 3, pp. 656–664, Mar. 2010, doi: 10.1109/TAP.2009.2039305.

C. J. Sánchez-Fernández, O. Quevedo-Teruel, J. Requena-Carrión, L. Inclán-Sánchez, and E. Rajo-Iglesias, “Dual-band microstrip patch antenna based on short-circuited ring and spiral resonators for implantable medical devices,” IET Microw. Antennas Propag., vol. 4, no. 8, pp. 1048–1055, Aug. 2010, doi: 10.1049/iet-map.2009.0594.

2009

E. Rajo-Iglesias, J. Fernandez, and M. Sierra-Castaner, “Hard Surfaces to Reduce Blockage in Thick Cylinders,” IEEE Antennas Wirel. Propag. Lett., vol. 8, pp. 1402–1405, 2009, doi: 10.1109/LAWP.2009.2039844.

P. Kildal, E. Alfonso, A. Valero-Nogueira, and E. Rajo-Iglesias, “Local Metamaterial-Based Waveguides in Gaps Between Parallel Metal Plates,” IEEE Antennas Wirel. Propag. Lett., vol. 8, pp. 84–87, 2009, doi: 10.1109/LAWP.2008.2011147.

E. Rajo-Iglesias, Ó. Quevedo-Teruel, and L. Inclan-Sanchez, “Planar Soft Surfaces and Their Application to Mutual Coupling Reduction,” IEEE Trans. Antennas Propag., vol. 57, no. 12, pp. 3852–3859, Dec. 2009, doi: 10.1109/TAP.2009.2024226.

E. Rajo-Iglesias, Ó. Quevedo-Teruel, and M. N. M. Kehn, “Multiband SRR Loaded Rectangular Waveguide,” IEEE Trans. Antennas Propag., vol. 57, no. 5, pp. 1571–1575, May 2009, doi: 10.1109/TAP.2009.2016799.

L. Inclan-Sanchez, J. Vazquez-Roy, and E. Rajo-Iglesias, “Proximity Coupled Microstrip Patch Antenna With Reduced Harmonic Radiation,” IEEE Trans. Antennas Propag., vol. 57, no. 1, pp. 27–32, Jan. 2009, doi: 10.1109/TAP.2008.2009654.

E. Rajo-Iglesias, J. -. Vazquez-Roy, O. Quevedo-Teruel, and L. Inclan-Sanchez, “Dual band planar soft surfaces,” IET Microw. Antennas Propag., vol. 3, no. 5, pp. 742–748, Aug. 2009, doi: 10.1049/iet-map.2008.0146.

O. Quevedo-Teruel, E. Rajo-Iglesias, and M. Ng Mou Kehn, “Numerical and experimental studies of split ring resonators loaded on the sidewalls of rectangular waveguides,” IET Microw. Antennas Propag., vol. 3, no. 8, pp. 1262–1270, Dec. 2009, doi: 10.1049/iet-map.2008.0313.

2008

M. N. M. Kehn, O. Quevedo-Teruel, and E. Rajo-Iglesias, “Split-ring resonator loaded waveguides with multiple stopbands,” Electron. Lett., vol. 44, no. 12, pp. 714–716, Jun. 2008, doi: 10.1049/el:20081108.

O. Quevedo-Teruel and E. Rajo-Iglesias, “Inverted Mode Patch Antenna for Dual-Band Communications,” IEEE Antennas and Wireless Propagation Letters, vol. 7, pp. 792–794, 2008, doi: 10.1109/LAWP.2008.2001233.

N. Herscovici, C. Christodoulou, E. Rajo-Iglesias, O. Quevedo-Teruel, and M. Sanchez-Fernandez, “Compact Multimode Patch Antennas for MIMO Applications [Wireless Corner],” IEEE Antennas Propag Mag, vol. 50, no. 2, pp. 197–205, Apr. 2008, doi: 10.1109/MAP.2008.4562418.

E. Rajo-Iglesias, Ó. Quevedo-Teruel, and L. Inclan-Sanchez, “Mutual Coupling Reduction in Patch Antenna Arrays by Using a Planar EBG Structure and a Multilayer Dielectric Substrate,” IEEE Trans. Antennas Propag., vol. 56, no. 6, pp. 1648–1655, Jun. 2008, doi: 10.1109/TAP.2008.923306.

L. Inclan-Sanchez, J. Vazquez-Roy, and E. Rajo-Iglesias, “High Isolation Proximity Coupled Multilayer Patch Antenna for Dual-Frequency Operation,” IEEE Trans. Antennas Propag., vol. 56, no. 4, pp. 1180–1183, Apr. 2008, doi: 10.1109/TAP.2008.919218.

M. Sanchez-Fernandez, E. Rajo-Iglesias, O. Quevedo-Teruel, and M. L. Pablo-Gonzalez, “Spectral Efficiency in MIMO Systems Using Space and Pattern Diversities Under Compactness Constraints,” IEEE Trans. Veh. Technol., vol. 57, no. 3, pp. 1637–1645, May 2008, doi: 10.1109/TVT.2007.909279.

E. Rajo-Iglesias, L. Inclan-Sanchez, and P. -. Kildal, “Comparison of bandwidths of mushroom-type electromagnetic bandgap surfaces and corrugated and strip-type soft surfaces when used as narrow ground planes,” IET Microw. Antennas Propag., vol. 2, no. 3, pp. 248–258, Apr. 2008, doi: 10.1049/iet-map:20070157.

2007

E. Rajo-Iglesias and O. Quevedo-Teruel, “Linear array synthesis using an ant-colony-optimization-based algorithm,” IEEE Antennas Propag Mag, vol. 49, no. 2, pp. 70–79, Apr. 2007, doi: 10.1109/MAP.2007.376644.

E. Rajo-Iglesias, L. Inclan-Sanchez, J. Vazquez-Roy, and E. Garcia-Munoz, “Size Reduction of Mushroom-Type EBG Surfaces by Using Edge-Located Vias,” IEEE Microw Wirel Compon Lett, vol. 17, no. 9, pp. 670–672, Sep. 2007, doi: 10.1109/LMWC.2007.903456.

O. Quevedo-Teruel, E. Rajo-Iglesias, and A. Oropesa-Garcia, “Hybrid Algorithms for Electromagnetic Problems and the No-Free-Lunch Framework,” IEEE Trans. Antennas Propag., vol. 55, no. 3, pp. 742–749, Mar. 2007, doi: 10.1109/TAP.2007.891569.

E. Rajo-Iglesias, M. Caiazzo, L. Inclan-Sanchez, and P. -. Kildal, “Comparison of bandgaps of mushroom-type EBG surface and corrugated and strip-type soft surfaces,” IET Microw. Antennas Propag., vol. 1, no. 1, pp. 184–189, Feb. 2007, doi: 10.1049/iet-map:20050327.

2006

O. Quevedo-Teruel and E. Rajo-Iglesias, “Ant Colony Optimization in Thinned Array Synthesis With Minimum Sidelobe Level,” IEEE Antennas Wirel. Propag. Lett., vol. 5, pp. 349–352, 2006, doi: 10.1109/LAWP.2006.880693.

O. Quevedo-Teruel and E. Rajo-Iglesias, “Design of Short-Circuited Ring-Patch Antennas Working at $hboxTM_01$ Mode Based on Neural Networks,” IEEE Antennas Wirel. Propag. Lett., vol. 5, pp. 559–562, 2006, doi: 10.1109/LAWP.2006.889559.

V. Gonzalez-Posadas, D. Segovia-Vargas, E. Rajo-Iglesias, J. L. Vazquez-Roy, and C. Martin-Pascual, “Approximate analysis of short circuited ring patch antenna working at TM/sub 01/ mode,” IEEE Trans. Antennas Propag., vol. 54, no. 6, pp. 1875–1879, Jun. 2006, doi: 10.1109/TAP.2006.875925.

2002

E. Rajo-Iglesias, G. Villaseca-Sanchez, and C. Martin-Pascual, “Input impedance behavior in offset stacked patches,” IEEE Antennas Wirel. Propag. Lett., vol. 1, pp. 28–30, 2002, doi: 10.1109/LAWP.2002.802582.