Leal-Sevillano, C. A., T. YingaTao, M. J. Lancaster, J. A. Ruiz-Cruz, J. R. Montejo-Garai, and J. M. Rebollar,  "A Micromachined Dual-Band Orthomode Transducer",  IEEE Transactions on Microwave Theory and Techniques, vol. 62, no. 1, pp. 55-63, January, 2014.

Leal-Sevillano, C. A., J. A. Ruiz-Cruz, J. R. Montejo-Garai, and J. M. Rebollar,  "Novel Dual-Band Single Circular Polarization Antenna Feeding Network for Satellite Communications",  Proc. 2014 European Conference on Antennas and Propagation (EuCap), pp. 1-5, Apr., 2014.

Leal-Sevillano, C. A., K. B. Cooper, J. A. Ruiz-Cruz, J. R. Montejo-Garai, and J. M. Rebollar,  "A 225 GHz Circular Polarization Waveguide Duplexer Based on a Septum Orthomode Transducer Polarizer",  IEEE Transactions on Terahertz Science and Technology, vol. 3, no. 5, pp. 574-583, Sep., 2013.

Leal-Sevillano, C. A., J. A. Ruiz-Cruz, J. R. Montejo-Garai, and J. M. Rebollar,  "Compact Broadband Couplers Based on the Waveguide Magic-T Junction",  Proc. 43rd European Microwave Conference, 2013.

Montejo-Garai, J. R., J. A. Ruiz-Cruz, C. A. Leal-Sevillano, and J. M. Rebollar,  "Design of Dual-Polarization Diplexers Based on Enhanced Turnstile Junctions",  2013 CST European User Group Meetings, May, 2013.

Montejo-Garai, J. R., J. A. Ruiz-Cruz, C. A. Leal-Sevillano, and J. M. Rebollar,  "Design of Dual-Polarization Waveguide Devices with Frequency Discrimination",  2013 IEEE MTT-S International Microwave Symposium Digest, pp. 1-4, June, 2013.

Leal-Sevillano, C. A., J. A. Ruiz-Cruz, J. R. Montejo-Garai, and J. M. Rebollar,  "Dual-Band Bi-Phase Waveguide Polarizer for a Novel Feeder Network without Orthomode Transducer",  Proc. 43rd European Microwave Conference, 2013.

Leal-Sevillano, C. A., J. A. Ruiz-Cruz, J. R. Montejo-Garai, J. A. Ruiz-Cruz, and J. M. Rebollar,  "Equivalent circuit of multi-aperture waveguide irises and its application in the design of compact filters",  Proc. 2013 USNC/URSI National Radio Science Meeting, pp. 11, July, 2013.

Leal-Sevillano, C. A., J. R. Montejo-Garai, J. A. Ruiz-Cruz, and J. M. Rebollar,  "Experimental comparison of waveguide filters at W-band implemented by different machining processes and split-block",  Journal of Electromagnetic Waves and Applications, vol. 27, no. 18, pp. 2390-2394, Oct, 2013.

Mecia-Oliva, B., J. Grajal-de-la-Fuente, A. Badolato, A. Garcia-Pino, J. L. Besada-Sanmartin, C. A. Leal-Sevillano, J. A. Ruiz-Cruz, J. R. Montejo-Garai, and J. M. Rebollar,  "Experimental radar imager with sub-cm range resolution at 300 GHz",  Proc. 2013 Simposium Nacional URSI (in Spanish), pp. 1-7, Sept., 2013.

Montejo-Garai, J. R., J. A. Ruiz-Cruz, C. A. Leal-Sevillano, and J. M. Rebollar,  "Modeling of Dual-Polarization Diplexers Based on Enhanced Multiport Turnstile Junctions",  IET Microwaves, Antennas and Propagation, vol. 7, no. 7, pp. 485-492, May, 2013.

Leal-Sevillano, C. A., T. J. Reck, C. Jung-Kubiak, G.. Chattopadhyay, J. A. Ruiz-Cruz, J. R. Montejo-Garai, and J. M. Rebollar,  "Silicon Micromachined Canonical E-Plane and H-Plane Bandpass Filters at the Terahertz Band",  IEEE Microwave and Wireless Components Letters, vol. 23, no. 6, pp. 288-290, June, 2013.

Leal-Sevillano, C. A., J. A. Ruiz-Cruz, J. R. Montejo-Garai, and J. M. Rebollar,  "Design of waveguide filters at W-band by means of machining techniques",  Proc. 2012 USNC/URSI National Radio Science Meeting, pp. 1, July, 2012.

Leal-Sevillano, C. A., J. R. Montejo-Garai, K. Maolong, M.. J. Lancaster, J. A. Ruiz-Cruz, and J. M. Rebollar,  "Diseño de un Filtro de Respuesta Elíptica en Banda W Fabricado Mediante la Tecnología de Foto Resina SU-8",  Proc. 2012 Simposium Nacional URSI (in Spanish), pp. 1-4, Sept., 2012.

Leal-Sevillano, C. A., J. R. Montejo-Garai, J. A. Ruiz-Cruz, and J. M. Rebollar,  "Low-Loss Elliptical Response Filter at 100 GHz",  Microwave and Wireless Components Letters, IEEE, vol. 22, no. 9, pp. 459 -461, September, 2012.

Montejo-Garai, J. R., C. A. Leal-Sevillano, J. A. Ruiz-Cruz, and J. M. Rebollar,  "Multipaction Breakdown Prediction of Passive Microwave Devices with CST Particle-Studio",  2012 CST European User Group Meetings, May, 2012.

Leal-Sevillano, C. A., J. R. Montejo-Garai, K. Maolong, M.. J. Lancaster, J. A. Ruiz-Cruz, and J. M. Rebollar,  "A Pseudo-Elliptical Response Filter at W-Band Fabricated with Thick SU-8 Photo-Resist Technology",  IEEE Microwave and Wireless Components Letters, vol. 22, no. 3, pp. 105-107, March, 2012.

Leal-Sevillano, C. A., J. R. Montejo-Garai, J. A. Ruiz-Cruz, and J. M. Rebollar,  "Recent Results on Waveguide Filters at W-Band",  Proc. 2012 ESA Microwave Technology and Techniques Workshop, pp. 1-6, Nov., 2012.

Leal-Sevillano, C. A., J. A. Ruiz-Cruz, J. R. Montejo-Garai, and J. M. Rebollar,  "Rigorous analysis of the parallel plate waveguide: From the transverse electromagnetic mode to the surface plasmon polaritons",  Radio Science, vol. 47, no. RS0NO2, pp. 1-8, February, 2012.

Montejo-Garai, J. R., C. A. Leal-Sevillano, J. A. Ruiz-Cruz, and J. M. Rebollar,  "Symmetrical Response Filter Design Applying the Bartlettâ??s Theorem and Using Ribletâ??s Couplers",  Proc. International Conference on Electromagnetics in Advanced Applications (ICEAA), pp. 1-4, Sep., 2012.

Montejo-Garai, J. R., C. A. Leal-Sevillano, J. A. Ruiz-Cruz, J. M. Rebollar, and T. Estrada,  "Synthesis and design of waveguide band-stop filters without out-of-band spurious responses for plasma diagnosis",  Fusion Engineering and Design, vol. 89, no. 9, pp. 1662-1666, September, 2012.

Leal-Sevillano, C. A., J. A. Ruiz-Cruz, J. R. Montejo-Garai, and J. M. Rebollar,  "Upper Frequency Limit of the Power Loss Method for the Estimation of Ohmic Losses in Hollow Metallic Waveguides",  2012 IEEE MTT-S International Microwave Symposium Digest, pp. 1-4, June, 2012.

Leal-Sevillano, C. A., J. A. Ruiz-Cruz, J. R. Montejo-Garai, and J. M. Rebollar,  "CAD for Dual-Band Polarizers in Corrugated Rectangular Waveguide",  Proc. 41st European Microwave Conference, pp. 822-825, Oct., 2011.

Montejo-Garai, J. R., C. A. Leal-Sevillano, J. A. Ruiz-Cruz, J. M. Rebollar, L. Rogla, and S. Sobrino,  "Design of Contiguous-Band Elliptic-Response Manifold Output Multiplexers by Efficient Cancellation of Reactive Impedance Parts",  Proc. VIII Encuentro Ibérico de Electromagnetismo Computacional (in Spanish), pp. 1, Nov., 2011.

Montejo-Garai, J. R., C. A. Leal-Sevillano, J. A. Ruiz-Cruz, J. M. Rebollar, L. Rogla, and S. Sobrino,  "Diseño de Multiplexores Manifold de Salida y Banda Contigua con Respuesta Elíptica Mediante la Cancelación Eficiente de la Parte Reactiva de la Impedancia",  Proc. 2011 Simposium Nacional URSI (in Spanish), pp. 1-4, Sept., 2011.

Leal-Sevillano, C. A., J. A. Ruiz-Cruz, J. R. Montejo-Garai, and J. M. Rebollar,  "Diseño y Optimizaciónn de Polarizadores Doble-Banda en Guía Rectangular Corrugada",  Proc. 2011 Simposium Nacional URSI (in Spanish), pp. 1-4, Sept., 2011.

Leal-Sevillano, C. A., J. A. Ruiz-Cruz, J. R. Montejo-Garai, and J. M. Rebollar,  "Field Propagation in Circular Hollow Waveguides with Non-Ideal Metallic Conductors from Microwaves to Terahertz Frequencies",  IEEE Transactions on Microwave Theory and Techniques, vol. 59, no. 12, pp. 3013-3022, Dec, 2011.

Montejo-Garai, J. R., J. A. Ruiz-Cruz, J. M. Rebollar, and T.. Estrada,  "In-line Pure E-Plane Waveguide Band-Stop Filter with Wide Spurious-Free Response",  IEEE Microwave and Wireless Components Letters, vol. 21, no. 4, pp. 209-211, April, 2011.

Montejo-Garai, J. R., C. A. Leal-Sevillano, J. A. Ruiz-Cruz, J. M. Rebollar, and T. Estrada,  "Multipactor prediction in waveguide band-stop filters with wideband spurious-free response",  Proc. International workshop on Multipactor, Corona and Passive Intermodulation (MULCOPIM), pp. 1-6, Sep., 2011.

Ruiz-Cruz, J. A., J. R. Montejo-Garai, and J. M. Rebollar,  "Optimal configurations for integrated antenna feeders with linear dual polarization and multiple frequency bands",  IET Microwaves, Antennas and Propagation, vol. 5, no. 8, pp. 1016-1022, June, 2011.

Leal-Sevillano, C. A., J. A. Ruiz-Cruz, J. R. Montejo-Garai, and J. M. Rebollar,  "Rigorous Analysis of the Parallel-Plate Waveguide by the Hybrid Mode Formulation:From the TEM mode to the Surface Plasmon Polariton",  Proc. 2011 URSIGAAS, pp. 1-4, August, 2011.

Ofli, E., P. Crespo-Valero, J. A. Ruiz-Cruz, C. A. Leal-Sevillano, J. R. Montejo-Garai, and J. M. Rebollar,  "SEMCAD X Microwave: Enhanced Simulation of Waveguide Structures",  Microwave Engineering Europe, vol. September, pp. 12-15, 2011.

Ruiz-Cruz, J. A., J. R. Montejo-Garai, and J. M. Rebollar,  "Short-slot E- and H-plane waveguide couplers with an arbitrary power division ratio",  International Journal of Electronics, vol. 98, no. 1, pp. 11-24, Jan., 2011.

Leal-Sevillano, C. A., J. A. Ruiz-Cruz, J. R. Montejo-Garai, and J. M. Rebollar,  "Waveguide Devices with Integrated Polarization Twist for Broadband Applications",  Proc. 2011 USNC/URSI National Radio Science Meeting, pp. 1, July, 2011.

Ruiz-Cruz, J. A., J. R. Montejo-Garai, and J. M. Rebollar,  Computer Aided Design of Waveguide Devices by Mode-Matching Methods (in Microwave and Millimeter Wave Technologies (ISBN: 978-953-307-083-4)),  , Oct 2009, 2010.

Ruiz-Cruz, J. A., J. R. Montejo-Garai, J. M. Rebollar, M. J. Mart?n, and V. García,  "Design and Evaluation of a Ka-band Antenna Feeder with Broadband Dual-Polarization Performance",  Proc. 2010 USNC/URSI National Radio Science Meeting, pp. 14, July, 2010.

Montejo-Garai, J. R., J. A. Ruiz-Cruz, and J. M. Rebollar,  "Efficient Design of Contiguous-Band Elliptic-Response Manifold Output Multiplexers with Single-Terminated Filters",  Electromagnetics, vol. 30, no. 8, pp. 644-659, November, 2010.

Ruiz-Cruz, J. A., J. R. Montejo-Garai, and J. M. Rebollar,  "Multi-Section Bow-Tie Steps for Full-Band Waveguide Polarization Rotation",  IEEE Microwave and Wireless Components Letters, vol. 20, no. 7, pp. 375-377, July, 2010.

Leal-Sevillano, C. A., J. A. Ruiz-Cruz, J. R. Montejo-Garai, and J. M. Rebollar,  "A New Model for the Electromagnetic Characterization of SIW",  Proc. VII Encuentro Ibérico de Electromagnetismo Computacional (in Spanish), pp. 1-4, Apr., 2010.

Leal-Sevillano, C. A., J. A. Ruiz-Cruz, J. R. Montejo-Garai, and J. M. Rebollar,  "Nuevo Modelo para la Caracterización Electromagnética de SIW",  Proc. 2010 Simposium Nacional URSI (in Spanish), pp. 1-4, Sept., 2010.

Leal-Sevillano, C. A., J. A. Ruiz-Cruz, J. R. Montejo-Garai, and J. M. Rebollar,  "Simple Models For The Analysis Of Waveguiding Systems At The Terahertz Band Using Classical Microwave Approaches",  Proc. 2010 European Conference on Antennas and Propagation (EuCap), pp. 1-5, Apr., 2010.

Medina-Mena, F., F. Mesa-Ledesma, J. A. Ruiz-Cruz, J. M. Rebollar, and J. R. Montejo-Garai,  "Study of Extraordinary Transmission in a Circular Waveguide System",  IEEE Transactions on Microwave Theory and Techniques, vol. 58, no. 6, pp. 1532-1542, June, 2010.

Ruiz-Cruz, J. A., J. R. Montejo-Garai, J. M. Rebollar, and J. M. Montero,  "C-Band Orthomode Transducer for Compact and Broadband Antenna Feeders",  Electronics Letters, vol. 45, no. 16, pp. 813-814, July, 2009.

Ruiz-Cruz, J. A., J. R. Montejo-Garai, and J. M. Rebollar,  "Design of a Dual-Band Ortho-Mode Transducer for Satellite Communications with Large Separation between Bands",  Proc. 2009 USNC/URSI National Radio Science Meeting, pp. 1, June, 2009.

Medina-Mena, F., J. A. Ruiz-Cruz, F. Mesa-Ledesma, J. R. Montejo-Garai, J. M. Rebollar, and R. Marques-Sillero,  "Experimental verification of extraordinary transmission without surface plasmons",  Applied Physics Letters, vol. 95, no. 7, pp. 1-3, August, 2009.

Monge, J., J. A. Ruiz-Cruz, S. Anza, C. Vicente, K. A. Zaki, J. R. Montejo-Garai, J. M. Rebollar, J. Gil, B.. Gimeno, and V. E. Boria,  "High Power analysis and design of dual-mode channel filters",  2009 IEEE MTT-S International Microwave Symposium Digest, pp. 1353-1356, June, 2009.

Montejo-Garai, J. R., J. A. Ruiz-Cruz, and J. M. Rebollar,  "Síntesis de Filtros Elípticos Single-Terminated Simétricos y Asimétricos para Multiplexación",  Proc. 2009 Simposium Nacional URSI (in Spanish), pp. 1-4, Sept., 2009.

Montejo-Garai, J. R., J. A. Ruiz-Cruz, and J. M. Rebollar,  "Synthesis and Design of a Diplexer with Asymmetric Singly-Terminated Elliptic Ladder Filters",  Proc. 2009 Int. Workshop on Microwave Filters CNES-ESA, pp. 1-6, Nov., 2009.

Montejo-Garai, J. R., J. A. Ruiz-Cruz, and J. M. Rebollar,  "Synthesis of Symmetric and Asymmetric Singly-Terminated Elliptic Ladder Filters for Multiplexing Applications",  International Journal of RF and Microwave Computer-Aided Engineering, vol. 19, no. 4, pp. 443-452, July, 2009.

Medina-Mena, F., J. A. Ruiz-Cruz, F. L. Mesa-Ledesma, J. R. Montejo-Garai, J. M. Rebollar, and R. Marques-Sillero,  "Transmisión Extraordinaria sin Plasmones de Superficie",  Proc. 2009 Simposium Nacional URSI (in Spanish), pp. 1-4, Sept., 2009.

Ruiz-Cruz, J. A., J. R. Montejo-Garai, J. M. Rebollar, and S.. Sobrino,  "Compact Full Ku-Band Triplexer With Improved E-Plane Power Divider",  Progress in Electromagnetic Research, vol. 86, pp. 39-51, October, 2008.

Ruiz-Cruz, J. A., J. R. Montejo-Garai, and J. M. Rebollar,  "Comparison of Different Models to Obtain the Dispersion Diagrams of Transmission Lines at Terahertz Frequencies",  Proc. 2008 USNC/URSI National Radio Science Meeting, pp. 1, July, 2008.

Ruiz-Cruz, J. A., J. R. Montejo-Garai, and J. M. Rebollar,  "Design and Full-Wave Optimization of a Ku-Band Rectangular Waveguide Triplexer",  Proc. 2008 USNC/URSI National Radio Science Meeting, pp. 1, July, 2008.

Ruiz-Cruz, J. A., Y. Zhang, J. R. Montejo-Garai, J. M. Rebollar, and K. A. Zaki,  "Diseño de filtros dual-mode longitudinales en guía de onda rectangular",  Proc. 2008 Simposium Nacional URSI (in Spanish), pp. 1-4, Sept., 2008.

Ruiz-Cruz, J. A., J. R. Montejo-Garai, and J. M. Rebollar,  "Full-wave modeling and optimization of Boifot junction ortho-mode transducers",  International Journal of RF and Microwave Computer-Aided Engineering, vol. 18, no. 4, pp. 303-313, July, 2008.

Ruiz-Cruz, J. A., Y. Zhang, J. R. Montejo-Garai, J. M. Rebollar, and K. A. Zaki,  "Longitudinal Dual-Mode Filters in Rectangular Waveguide",  2008 IEEE MTT-S International Microwave Symposium Digest, pp. 631-634, June, 2008.

Ruiz-Cruz, J. A., J. R. Montejo-Garai, and J. M. Rebollar,  "Modelos para la caracterización de líneas de transmisión en Terahercios",  Proc. VI Encuentro Ibérico de Electromagnetismo Computacional (in Spanish), pp. 1-6, Oct., 2008.

Ruiz-Cruz, J. A., J. R. Montejo-Garai, J. M. Rebollar, C. E. Montesano, M. J. Mart?n, and M. Naranjo-Masi,  "CAD de OMTs (Ortho-Mode Transducers) de Banda Ancha Basados en la Unión Bøifot",  Proc. 2007 Simposium Nacional URSI (in Spanish), pp. 1-4, Sept., 2007.

Ruiz-Cruz, J. A., J. R. Montejo-Garai, J. M. Rebollar, A. I. Daganzo, and I. Hidalgo-Carpintero,  "Design of Riblet-type couplers for Ka band applications",  Proc. 2007 IEEE Antennas and Propagation Society International Symposium, pp. 4276-4279, June, 2007.

Ruiz-Cruz, J. A., J. R. Montejo-Garai, J. M. Rebollar, A. I. Daganzo, and I. Hidalgo-Carpintero,  "Diseño de Acopladores Tipo Riblet en Banda Ka",  Proc. 2007 Simposium Nacional URSI (in Spanish), pp. 1-4, Sept., 2007.

Ruiz-Cruz, J. A., Y. Zhang, J. M. Rebollar, K. A. Zaki, J. R. Montejo-Garai, and A. J. Piloto,  "TEM Mode-Matching Analysis of Multi-coupled Strip-line Filters",  2007 IEEE MTT-S International Microwave Symposium Digest, pp. 541-544, June, 2007.

Ruiz-Cruz, J. A., J. R. Montejo-Garai, J. M. Rebollar, and K. A. Zaki,  "Waveguide filters with elliptical function response: Overview and results of different implementations",  International Journal of RF and Microwave Computer-Aided Engineering, vol. 17, no. 1, pp. 63-69, Jan., 2007.

Ruiz-Cruz, J. A., J. R. Montejo-Garai, and J. M. Rebollar,  "Comparison of different technologies to implement finite transmission zeros in cavity waveguide filters",  Proc. 2006 Int. Workshop on Microwave Filters CNES-ESA, pp. 1-2, Oct., 2006.

Ruiz-Cruz, J. A., J. R. Montejo-Garai, J. M. Rebollar, C. E. Montesano, M. J. Mart?n, and M. Naranjo-Masi,  "Computer Aided Design of Wideband Orthomode Transducers based on the Boifot Junction",  2006 IEEE MTT-S International Microwave Symposium Digest, pp. 1173-1176, June, 2006.

Montejo-Garai, J. R., J. A. Ruiz-Cruz, J. M. Rebollar, A.. Onoro-Navarro, I. Hidalgo-Carpintero, and M. J. Padilla-Cruz,  "Design of Self-Equalised Elliptic Filter Channels in Ka-Band Implemented in Rectangular H-Plane Waveguide",  Proc. 36th European Microwave Conference, pp. 1087-1090, Sept., 2006.

Montejo-Garai, J. R., J. A. Ruiz-Cruz, and J. M. Rebollar,  "Diseño de filtros de Canal Elípticos y Autoecualizados en Banda Ka implementados en guía rectangular plano H",  Proc. 2006 Simposium Nacional URSI (in Spanish), pp. 1-3, Sept., 2006.

Ruiz-Cruz, J. A., J. R. Montejo-Garai, and J. M. Rebollar,  "Relative Convergence Problem in the Mode-Matching Analysis of Stripline Interdigital Filters with Different Input-Output Coupling",  Proc. 2006 USNC/URSI National Radio Science Meeting, pp. 1, July, 2006.

Ruiz-Cruz, J. A., J. R. Montejo-Garai, J. M. Rebollar, C. E. Montesano, and M. J. Mart?n,  "Very compact ortho-mode transducers with double septum configuration",  Microwave and Optical Technology Letters, vol. 48, no. 4, pp. 765-767, Apr., 2006.

Ruiz-Cruz, J. A., G. G. Gentili, and J. M. Rebollar,  "Analysis of waveguide junctions by the Boundary Contour Mode-Matching Method with segmented regions",  Proc. 2005 USNC/URSI National Radio Science Meeting, pp. 1, July, 2005.

Ruiz-Cruz, J. A., M. A. El Sabbagh, K. A. Zaki, J. M. Rebollar, and Y. Zhang,  "Canonical ridge waveguide filters in LTCC or metallic resonators",  IEEE Transactions on Microwave Theory and Techniques, vol. 53, no. 1, pp. 174-182, Jan., 2005.

Ruiz-Cruz, J. A., and J. M. Rebollar,  "Eigenmodes of waveguides using a boundary contour mode-matching method with an FFT scheme",  International Journal of RF and Microwave Computer-Aided Engineering, vol. 15, no. 3, pp. 286-295, May, 2005.

Montejo-Garai, J. R., J. A. Ruiz-Cruz, and J. M. Rebollar,  "Full-Wave Design of H-Plane Contiguous Manifold Output Multiplexers Using the Fictitious Reactive Load Concept",  IEEE Transactions on Microwave Theory and Techniques, vol. 53, no. 8, pp. 2628-2632, Aug., 2005.

Montejo-Garai, J. R., J. A. Ruiz-Cruz, and J. M. Rebollar,  "Implementación de filtros con ceros de transmisión mediante polos extraídos en tecnología plano-H",  Proc. IV Encuentro Ibérico de Electromagnetismo Computacional (in Spanish), pp. 1-5, Sept., 2005.

Montejo-Garai, J. R., J. A. Ruiz-Cruz, and J. M. Rebollar,  "Nuevo Método de Diseño de Multiplexores de Salida en Configuración Manifold y Estructura Plano-H",  Proc. 2005 Simposium Nacional URSI (in Spanish), pp. 1-4, Sept., 2005.

Ruiz-Cruz, J. A., K. A. Zaki, J. R. Montejo-Garai, and J. M. Rebollar,  "Rectangular waveguide elliptic filters with capacitive and inductive irises and integrated coaxial excitation",  2005 IEEE MTT-S International Microwave Symposium Digest, pp. 269-272, June, 2005.

Ruiz-Cruz, J. A., Y. Zhang, K. A. Zaki, A. J. Piloto, and J. M. Rebollar,  "Ridge waveguide branch-line directional couplers for wideband applications and LTCC technology",  2005 IEEE MTT-S International Microwave Symposium Digest, pp. 1219-1222, June, 2005.

Ruiz-Cruz, J. A., J. R. Montejo-Garai, and J. M. Rebollar,  "Simple equivalent circuit of multi-aperture rectangular iris in rectangular waveguide",  Proc. 2005 USNC/URSI National Radio Science Meeting, pp. 1, July, 2005.

Montejo-Garai, J. R., J. A. Ruiz-Cruz, and J. M. Rebollar,  "Synthesis and design of a manifold triplexer implemented in a three layer rectangular H-plane waveguide",  Proc. 35th European Microwave Conference, vol. 1, pp. 1-4, Oct., 2005.

Montejo-Garai, J. R., J. A. Ruiz-Cruz, J. M. Rebollar, M. J. Padilla-Cruz, A. Onoro-Navarro, and I. Hidalgo-Carpintero,  "Synthesis and design of in-line N-order filters with N real transmission zeros by means of extracted poles implemented in low-cost rectangular H-plane waveguide",  IEEE Transactions on Microwave Theory and Techniques, vol. 53, no. 5, pp. 1636-1642, May, 2005.

Ruiz-Cruz, J. A., J. R. Montejo-Garai, and J. M. Rebollar,  "Application of the simulated annealing for waveguide filters with complicated frequency response",  WSEAS Transactions on Mathematics, vol. 3, no. 4, pp. 807-812, Oct., 2004.

Ruiz-Cruz, J. A., J. R. Montejo-Garai, and J. M. Rebollar,  "Diseño y medida de un filtro dual-mode en cavidad elíptica",  Proc. 2004 Simposium Nacional URSI (in Spanish), pp. 1-4, Sept., 2004.

Ruiz-Cruz, J. A., M. A. El Sabbagh, K. A. Zaki, and J. M. Rebollar,  "Full-wave design of canonical ridge waveguide filters",  2004 IEEE MTT-S International Microwave Symposium Digest, vol. 2, pp. 603-606, June, 2004.

Montejo-Garai, J. R., J. A. Ruiz-Cruz, J. M. Rebollar, M. J. Padilla-Cruz, and O-N. A. I Hidalgo-Carpintero,  "High power-low loss band pass rectangular waveguide H-plane filters with finite real frequency transmission zeros",  Proc. 2004 Int. Workshop on Microwave Filters CNES-ESA, pp. 1-2, Sept., 2004.

Ruiz-Cruz, J. A., and J. M. Rebollar,  "Interpretation of resonance at inclined multi-aperture rectangular iris with arbitrary locations in rectangular waveguide",  Proc. 2004 USNC/URSI National Radio Science Meeting, pp. 45, June, 2004.

Ruiz-Cruz, J. A., K. A. Zaki, and J. M. Rebollar,  "Mode-matching analysis of a coaxial-to-stripline discontinuity applied to the modeling of a coaxial probe",  Proc. 2004 IEEE Antennas and Propagation Society International Symposium, vol. 2, pp. 2139-2142, June, 2004.

Ruiz-Cruz, J. A., and J. M. Rebollar,  "An alternative interpretation of resonance of two-aperture irises in rectangular waveguide",  Proc. 2003 USNC/URSI National Radio Science Meeting, pp. 226, June, 2003.

Ruiz-Cruz, J. A., and J. M. Rebollar,  "BCMM analysis of short-slot waveguide couplers with an FFT algorithm",  Proc. 2003 IEEE Antennas and Propagation Society International Symposium, vol. 2, pp. 1193-1196, June, 2003.

Ruiz-Cruz, J. A., and J. M. Rebollar,  "Calculo de modos en guias de onda mediante un metodo BCMM basado en el uso de la FFT",  Proc. 2003 Simposium Nacional URSI (in Spanish), pp. 1-4, Sept., 2003.

Ruiz-Cruz, J. A., J. Esteban, and J. M. Rebollar,  "Efficient boundary contour mode-matching method of H- and E-plane junctions by fast Fourier transform algorithm",  IEE Proceedings Microwaves, Antennas and Propagation, vol. 150, no. 5, pp. 332-338, Oct., 2003.

Ruiz-Cruz, J. A., and J. M. Rebollar,  "Interpretación de las resonancias de irises multiapertura y su aplicación al diseño de filtros",  Proc. III Encuentro Ibérico de Electromagnetismo Computacional (in Spanish), pp. 1-4, Dec., 2003.

Ruiz-Cruz, J. A., and J. M. Rebollar,  "Análisis de uniones en guía de onda plano E y H mediante el método BCMM y el uso de la FFT",  Proc. 2002 Simposium Nacional URSI (in Spanish), pp. 519-520, Sept., 2002.

Ruiz-Cruz, J. A., J. R. Montejo-Garai, and J. M. Rebollar,  "Characterisation of waveguide discontinuities with finite wall conductivity",  Proc. 2002 IEEE Antennas and Propagation Society International Symposium, vol. 4, pp. 428-431, June, 2002.

Ruiz-Cruz, J. A., J. R. Montejo-Garai, and J. M. Rebollar,  "CAD of dual-mode filters with elliptical cavities",  Proc. 11th International Travelling Summer School on Microwaves and Lightwaves, pp. 11, July, 2001.

Montejo-Garai, J. R., J. A. Ruiz-Cruz, and J. M. Rebollar,  "Comparación entre diferentes técnicas para el cálculo de pérdidas de inserción en filtros",  Proc. II Encuentro Ibérico de Electromagnetismo Computacional (in Spanish), pp. 1, Dec., 2001.

Ruiz-Cruz, J. A., and J. M. Rebollar,  "Propiedades de la matriz de dispersión generalizada de uniones y discontinuidades en guía de onda",  Proc. 2001 Simposium Nacional URSI (in Spanish), pp. 9-10, Sept., 2001.

Ruiz-Cruz, J. A., and J. M. Rebollar,  "CAD de análisis de discontinuidades entre guías elípticas y rectangulares",  Proc. 2000 Simposium Nacional URSI (in Spanish), pp. 91-92, Sept., 2000.

Rebollar, J. M., and J. A. Ruiz-Cruz,  "Propiedades de la matriz de dispersión generalizada de discontinuidades y uniones en medios de transmisión",  Proc. I Encuentro Ibérico de Electromagnetismo Computacional (in Spanish), pp. 11, July, 2000.

Ruiz-Cruz, J. A., and J. M. Rebollar,  "Some properties of generalized matrices and their application to the Mode-Matching technique",  Proc. 2000 International Mediterranean Microwave Symp., pp. 62-65, May, 2000.