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., 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.