θ (deg)

Fig. 14 Simulated radiation patterns for the filter-antenna module at f0 = 4.90 GHz

Table 17 Simulated central frequency (f0) and -10 dB fractional bandwidth (FBW) of the filter-antenna module at 5 GHz

Table 18 Characteristic parameters of the simulated radiation patterns for the filter-antenna module at f0 = 4.90 GHz

5 Conclusions

A design procedure for filter-antenna modules based on SIW cavities has been presented. The filter-antenna module is designed as a coupled-resonator circuit, from electrical specifications such as central frequency (f0), fractional

References

1.Luo, G. Q., Hu, Z. F., Dong, L. X., & Sun, L. L. (2008). Planar slot antenna backed by substrate integrated waveguide cavity.

IEEE Antennas and Wireless Propagation Letters, 7, 236–239.

2.Xu, F., & Wu, K. (2005). Guided-wave and leakage characteristics of substrate integrated waveguide. IEEE Transactions on Microwave Theory and Techniques, 53(1), 66–73.

3.Chen, X., Hong, W., Cui, T., Chen, J., & Wu, K. (2005). Substrate integrated waveguide (SIW) linear phase filter. IEEE Microwave and Wireless Components Letters, 15(11), 787–789.

4.Yang, S., Elsherbini, A., Lin, S., Fathy, A. E., Kamel, A., & Elhennawy, H. (2007). A highly efficient Vivaldi antenna array design on thick substrate and fed by SIW structure with integrated GCPW feed. In IEEE antennas and propagation international symposium, pp. 1985–1988, June 2007.

5.Boho´rquez, J. C., Forero, H. A., Herrera, I. C., Avella, J., Pen˜a, N., & Guarnizo, H. F. (2009). Planar substrate integrated waveguide cavity-backed antenna. IEEE Antennas and Wireless Propagation Letters, 8, 1139–1142.

6.Froppier, B., Mahe´, Y., Cruz, E. M., & Toutain, S. (2003). Integration of a filtering function in an electromagnetic horn. 33rd European microwave conference, October 2003 (Vol. 3, pp. 939–942).

7.Luo, G. Q., Hong, W., Tang, H. J., Chen, J. X., Yin, X. X., Kuai, Z. Q., et al. (2007). Filtenna consisting of horn antenna and substrate integrated waveguide cavity FSS. IEEE Transactions on Antennas and Propagation, 55(1), 92–98.

8.Le Nadan, T., Coupez, J. P., Toutain, S., & Person, C. (1998). In

Integration of an antenna/filter device, using a multi-layer, multitechnology process. 28th European microwave conference, October 1998 (Vol. 1, pp. 672–677).

9.Nova, O., Boho´rquez, J. C., Pen˜a, N., Bridges, G., Shafai, L., & Shafai, C. (2011). Filter-antenna module using substrate integrated waveguide cavities. IEEE Antennas and Wireless Propagation Letters (AWPL), 10, 59–62.

10.Boho´rquez, J. C., Potelon, B., Person, C., Rius, E., Quendo, C., Tanne´, G., et al. (2006). Reconfigurable planar SIW cavity resonator and filter. In Proceedings of IEEE MTT-S international microwave symposium (pp. 947–950). CA: San Francisco.

11.Hong, J.-S., & Lancaster, M. J. (2001). Microstrip filters for RF/ microwave applications (pp. 236–244, 251–262). New York: Wiley.

12.Matthaei, G. L., Young, L., & Jones, E. M. T. (1980). Microwave filters, impedance-matching networks and coupling structures

(pp. 85–97, 108–120, 427–440). Norwood: Artech House.

13.Cameron, R. J. (1999). General coupling matrix synthesis methods for Chebyshev filtering functions. IEEE Transactions on Microwave Theory and Techniques, 47(4), 433–442.

14.Pozar, D. M. (2005). Microwave engineering. New York: Wiley.

15.Balanis, C. A. (1989). Advanced engineering electromagnetics

(pp. 23–32). New York: Wiley.

Omar A. Nova received the B.Sc. degree in Electronics Engineering from Faculty of Engineering, National University, Bogota´, Colombia, in 2007, and the M.Sc. degree in Electronic Engineering and Computers from Faculty of Engineering, University of Los Andes, Bogota´, Colombia, in 2012. Currently he is a Ph.D. student at the Department of Electrical and Electronics Engineering of University of Los Andes, and he works with the research group ‘‘Grupo de Elect-

ro´nica y Sistemas de Telecomunicaciones-GEST’’. His research areas are computational electromagnetic and elastodynamics and electromagnetism applied to telecommunications.

Juan C. Boho´rquez received the B.Sc. and the M.Sc. degree in Electrical Engineering from Faculty of Engineering, University of Los Andes, Bogota´, Colombia, in 1995 and 1997, respectively. In 2007 he received the Ph.D. degree

´ ´

from ‘‘Ecole Nationale Superieure des Te´le´communications de Bretagne’’, Brest, France. Currently he is with the Department of Electrical and Electronic Engineering of University of Los Andes as a Professor and works with the research group ‘‘Grupo

de Electro´nica y Sistemas de Telecomunicaciones-GEST’’. His research areas are microwave engineering and reconfigurable RF filters.

Ne´stor M. Pen˜a received the B.Sc. and the M.Sc. degree in Electrical Engineering from Faculty of Engineering, University of Los Andes, Bogota´, Colombia, in 1987 and 1989, respectively. He also received the B.Sc. in Mathematics from the Faculty of Science of the same University, in 1991. He obtained the Diploma of Advanced Studies in Telecommunications from the University of Rennes 1, France, in 1994 and the Ph.D. degree in Signal Processing and Telecommunications

from the same University, in 1997. Currently he is with the Department of Electrical and Electronic Engineering of University of Los Andes as an Associate Professor and works with the research group ‘‘Grupo de Electro´nica y Sistemas de Telecomunicaciones-GEST’’. His research areas are Telecommunications, Electromagnetic Theory and Computational Electromagnetics.

Greg E. Bridges received the B.Sc., M.Sc. and Ph.D. degrees from the University of Manitoba, Winnipeg, MB, Canada, in 1982, 1984, and 1989, respectively, all in electrical engineering. He is currently a Professor in the Department of Electrical and Computer Engineering, University of Manitoba. He is the Principal Investigator for the Advanced RF Systems Laboratory of the National Microelectronics and Photonics Test Collaboratory. His research interests include compu-

tational electromagnetics, wave interactions with transmission lines, RF sensors and nanoprobe-based measurement techniques for high-frequency integrated circuit test, and failure analysis.

Lotfollah Shafai received the B.Sc. degree from the University of Tehran, Tehran, Iran, in 1963, and the M.Sc. and Ph.D. degrees in applied sciences and engineering at the University of Toronto, Toronto, ON, Canada, in 1966 and 1969, all in electrical engineering. In November 1969, he joined the Department of Electrical and Computer Engineering, University of Manitoba, Winnipeg, MB, Canada, as a Sessional Lecturer, Assistant Professor (1970), Associate Professor

(1973), and Professor (1979). Dr. Shafai is an elected Fellow of The Royal Society of Canada (1998). He is a member of the International Scientific Radio Union (URSI) Commission B and was its chairman from 1985 to 1988. He is an elected Fellow of The Canadian Academy of Engineering and Distinguished Professor at The University of Manitoba. His research interests include applied electromagnetics and antenna theory and design, high efficiency, low cross polarization and multi-band antenna elements and arrays, low loss EHF and millimeter wave arrays, reflector antennas and high performance feeds, antenna measurement and near field diagnostic.

Cyrus Shafai received the B.Sc. degree in electrical engineering and M.Sc. degree (for his development of the scanning resistance microscope) in electrical engineering from the University of Manitoba, Winnipeg, MB, Canada, in 1990 and 1993, and the Ph.D. degree in electrical engineering from the University of Alberta, Edmonton, AB, Canada, in 1997, for his development of an on-chip Peltier heat pump. He is currently a Professor with the

Department of Electrical and Computer Engineering, University of Manitoba. His current research interests include the fabrication of micromachined devices and RF components.