volume | PIER Journals

Abstract

A new design for circularly-polarized (CP) slot antennas is first described. The antenna is a combination of a shorted square-ring slot and an L-shaped linear slot, and its CP operation frequency can be easily tuned under the condition that the slot area is unchanged. Based on the CP design, two reconfigurable slot antennas are then developed. One is a frequency reconfigurable antenna, whose CP operation frequency can be switched between two adjacent frequencies. The other is a polarization reconfigurable antenna, whose polarization can be switched between two orthogonal CP senses. The two reconfigurable antennas are realized using PIN diodes. Details of the designs and experimental results are shown.

1. Hong, C. S., "Small annular slot antenna with capacitor loading," Electronc. Lett,, Vol. 36, 110-111, 2000.
doi:10.1049/el:20000147 Google Scholar

2. Chen, W. S., C. C. Huang, and K. L. Wong, "Microstrip-line-fed printed shorted ring-slot antennas for circular polarization," Microwave Opt. Technol. Lett., Vol. 31, 137-140, 2001.
doi:10.1002/mop.1380 Google Scholar

3. Lee, T. Y. and J. S. Row, "Frequency reconfigurable circular polarized slot antennas with wide tuning range," Microwave Opt. Technol. Lett., Vol. 53, 1501-1505, 2011.
doi:10.1002/mop.26041 Google Scholar

4. White, C. R. and G. M. Rebeiz, "Single- and dual-polarized tunable slot-ring antennas," IEEE Trans. Antennas Propagat., Vol. 57, 19-26, 2009.
doi:10.1109/TAP.2008.2009664 Google Scholar

5. Ho, M. H., M. T. Wu, C. I. G. Hsy, and J. Y. Sze, "An RHCP/LHCP switchable slotline-fed slot ring antenna ," Microwave Opt. Technol. Lett., Vol. 46, 30-33, 2005.
doi:10.1002/mop.20892 Google Scholar

6. Fries, M. K., M. Grani, and R. Vahldieck, "A reconfigurable slot antenna with switchable polarization," IEEE Microwave Wireless Compon. Lett., Vol. 13, 490-492, 2003.
doi:10.1109/LMWC.2003.817148 Google Scholar

7. Zhao, Y. L., C. Gai, L. Liu, J. P. Xiong, J. Chen, and Y. C. Jiao, "A novel polarization reconfigurable annular ring-slot antenna," Journal of Electromagnetic Waves and Applications, Vol. 22, No. 11-12, 1587-1592, 2008.
doi:10.1163/156939308786390283 Google Scholar

8. Chen, Y. B., X. F. Liu, Y. C. Jiao, and F. S. Zhang, "A frequency reconfigurable CPW-fed slot antenna," Journal of Electromagnetic Waves and Applications, Vol. 21, No. 12, 1673-1678, 2007. Google Scholar

9. Soliman, E. A., W. D. Raedt, and G. A. E. Vandenbosch, "Reconfigurable slot antenna for polarization diversity," Journal of Electromagnetic Waves and Applications, Vol. 23, No. 7, 905-916, 2009.
doi:10.1163/156939309788355207 Google Scholar

10. Zhao, Y. L., Y. C. Jiao, G. Zhao, Z. B. Weng, and F. S. Zhang, "A novel polarization reconfigurable ring slot antenna with frequency agility," Microwave Opt. Technol. Lett., Vol. 51, 540-543, 2009.
doi:10.1002/mop.24064 Google Scholar

Dr. Chuen-Ching Wang

Dr. Li-Ting Chen

Professor Jeen-Sheen Row