volume | PIER Journals

Abstract

Tunable frequency selective surfaces (FSSs) based on split ring resonators (SRRs) are presented. Tuning performance is achieved by means of several on/off switches placed between the rings of each SRR element. The band-stop FSS response is dynamically tuned to different frequency bands at different switching states. In addition, loadings placed at the corners of outer ring elements, forming a fan-like shape, with additional switches are shown to offer rather fine-tuning capability. A dual-layer FSS is also introduced to demonstrate a filter response over a larger frequency band, and also offers tunable dualband operation via switching. By using complementary SRR elements, a tunable band-pass response instead can be obtained using a similar switching configuration. Practical switch modeling is also examined in the paper along with the scanning performance of the SRR-FSS. The numerical analysis of the FSS designs is accomplished using a fast periodic array simulator, and the measurements demonstrate preliminary validation of the proposed switching configuration.

1. Munk, B. A., Frequency Selective Surfaces: Theory and Design, John Wiley & Sons, 2000.

2. Erdemli, Y. E., K. Sertel, R. A. Gilbert, D. E. Wright, and J. L. Volakis, "Frequency-selective surfaces to enhance performance of broad-band reconfigurable arrays," IEEE Trans. Antennas Propagat., Vol. 50, No. 12, 1716-1724, 2002.
doi:10.1109/TAP.2002.807377 Google Scholar

3. Erdemli, Y. E., R. A. Gilbert, and J. L. Volakis, "A reconfigurable slot aperture design over a broadband substrate/feed structure," IEEE Trans. Antennas Propagat., Vol. 52, No. 11, 2860-2870, 2004.
doi:10.1109/TAP.2004.835565 Google Scholar

4. Pendry, J. B., A. J. Holden, D. J. Robins, and W. J. Stewart, "Magnetism from conductors and enhanced nonlinear phenomena," IEEE Trans. Microwave Theory Tech., Vol. 47, No. 11, 2075-2084, 1999.
doi:10.1109/22.798002 Google Scholar

5. Beruete, M., R. Marques, J. D. Baena, and M. Sorolla, "Resonance and cross-polarization effects in conventional and complementary split ring resonators periodic screens," Proc. IEEE Antennas Propagat. Soc. Int. Symp., 794-797, Washington D.C., July 3-8 2005.

6. Bardi, I., R. Remski, D. Perry, and Z. Cendes, "Plane wave scattering from frequency-selective surfaces by the finite-element method," IEEE Trans. Magnetics, Vol. 38, No. 2, 641-644, 2002.
doi:10.1109/20.996167 Google Scholar

7. Erdemli, Y. E. and A. Sondas, "Dual-polarized frequency-tunable composite left-handed slab," Journal of Electromagnetic Waves and Applications, Vol. 19, No. 14, 1907-1918, 2005.
doi:10.1163/156939305775570521 Google Scholar

8. Cenk, C., A. Sondas, and Y. E. Erdemli, "Tunable split ring resonator microstrip filter design," Proc. Mediterranean Microwave Symposium, 20-23, Genova, Italy, Sep. 19-21 2006.

9. Eibert, T. F., Y. E. Erdemli, and J. L. Volakis, "Hybrid finite element-fast spectral domain multilayer boundary integral modeling of doubly periodic structures," IEEE Trans. Antennas Propagat., Vol. 51, No. 9, 2517-2520, 2003.
doi:10.1109/TAP.2003.816386 Google Scholar

10. Chang, T. K., R. J. Langley, and E. A.Parker, "Active frequency-selective surfaces," IEE Proc.-Microw. Antennas Propag., Vol. 143, No. 1, 62-66, 1996.
doi:10.1049/ip-map:19960115 Google Scholar

11. Schoenlineer, B., A. Abbaspour-Tamijani, L. C. Kempel, and G. M. Rebeiz, "Switchable low-loss RF MEMS Ka-band frequency-selective surface," IEEE Trans. Microwave Theory Tech., Vol. 52, No. 11, 2474-2481, 2004.
doi:10.1109/TMTT.2004.837148 Google Scholar

12. Rebeiz, G. M. and J. B. Muldavin, "RF-MEMS switches and switch circuits," IEEE Microwave Magazine, Vol. 2, No. 4, 59-71, 2001.
doi:10.1109/6668.969936 Google Scholar

Dr. Mustafa H. B. Ucar

Dr. Adnan Sondas

Prof. Yunus Emre Erdemli