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.

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.

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, 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, 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, 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, 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.

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,  "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. 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,  "CAD de análisis de discontinuidades entre guías elípticas y rectangulares",  Proc. 2000 Simposium Nacional URSI (in Spanish), pp. 91-92, Sept., 2000.