volume | PIER Journals

Abstract

Designs of a polygon shape microstrip antenna for increasing number of side lengths are studied. A detailed analysis is presented for the variations observed in the first and second order mode resonance frequencies in a polygon shape patch, from triangle to square to pentagon, ending up in a circle. Among all the polygon shapes, close spacing between the first two frequencies is obtained in the pentagon shape patch. A design of a pentagon shape microstrip antenna with a pair of slots is proposed. It gives impedance bandwidth of more than 700 MHz (>55%), which is maximum amongst all the polygon shapes employing a pair of rectangular slots. The proposed design offers peak broadside gain of 9 dBi over the bandwidth. A resonant length formulation and subsequent design methodology for the pentagon shape patch and its slot loaded variation are presented. This helps in the redesigning of a similar configuration in a given frequency range, using proximity and coaxial feeds.

1. Garg, R., et al., Microstrip Antenna Design Handbook, Artech House, 2001.

2. Kumar, G. and K. P. Ray, Broadband Microstrip Antennas, 1st Ed., Artech House, USA, 2003.

3. Bahl, I. J. and P. Bhartia, Microstrip Antennas, Artech House, 1980.

4. Wong, K. L., Compact and Broadband Microstrip Antennas, 1st Ed., John Wiley & Sons, New York, USA, 2002.
doi:10.1002/0471221112

5. Huynh, T. and K. F. Lee, "Single-layer single-patch wideband microstrip antenna," Electronics Letters, Vol. 31, No. 16, 1310-1312, August 1995.
doi:10.1049/el:19950950 Google Scholar

6. Wong, K. L. and W. H. Hsu, "A broadband rectangular patch antenna with pair of wide slits," IEEE Transactions on Antennas & Propagation, Vol. 49, No. 9, 1345-1347, September 2001.
doi:10.1109/8.951507 Google Scholar

7. Deshmukh, A. A. and G. Kumar, "Compact broadband E-shaped microstrip antennas," Electronics Letters, Vol. 41, No. 18, 989-990, September 2005.
doi:10.1049/el:20051789 Google Scholar

8. Bhardwaj, S. and Y. R. Samii, "A comparative study of C-shaped, E-shaped, and U-slotted patch antennas," Microwave and Optical Technology Letters, Vol. 54, No. 7, 1746-1756, July 2012.
doi:10.1002/mop.26894 Google Scholar

9. Lee, K. F., S. L. S. Yang, A. A. Kishk, and K. M. Luk, "The versatile U-slot patch antenna," IEEE Antennas and Propagation Magazine, Vol. 52, No. 1, 71-88, May 2010.
doi:10.1109/MAP.2010.5466402 Google Scholar

10. Khodaei, G. F., J. Nourinia, and C. Ghobadi, "A practical miniaturized U-slot patch antenna with enhanced bandwidth," Progress In Electromagnetic Research B, Vol. 3, 47-62, 2008.
doi:10.2528/PIERB07112201 Google Scholar

11. Khan, M. and D. Chatterjee, "Characteristic mode analysis of a class of empirical design techniques for probe-fed, U-slot microstrip patch antennas," IEEE Transactions on Antennas & Propagation, Vol. 64, No. 7, 2758-2770, April 2016.
doi:10.1109/TAP.2016.2556705 Google Scholar

12. Costanzo, S. and A. Costanzo, "Compact MUSA: Modified U-slot patch antenna with reduced cross-polarization," IEEE Antennas and Propagation Magazine, Vol. 57, No. 3, 71-80, July 2015.
doi:10.1109/MAP.2015.2437284 Google Scholar

13. Ge, Y., K. P. Esselle, and T. S. Bird, "A compact E-shaped patch antenna with corrugated wings," IEEE Transactions on Antennas & Propagation, Vol. 54, No. 8, 2411-2413, August 2006.
doi:10.1109/TAP.2006.877204 Google Scholar

14. Liu, N. W., et al., "A low-profile wideband aperture-fed microstrip antenna with improved radiation patterns," IEEE Transactions on Antennas & Propagation, Vol. 67, No. 1, 562-567, October 2019.
doi:10.1109/TAP.2018.2878099 Google Scholar

15. Liu, N. W., et al., "A differential-fed microstrip patch antenna with bandwidth enhancement under operation of TM₁₀ and TM₃₀ modes," IEEE Transactions on Antennas & Propagation, Vol. 65, No. 4, 1607-1614, February 2017.
doi:10.1109/TAP.2017.2670329 Google Scholar

16. Ang, I. and B. L. Ooi, "Broadband semi-circle-fed microstrip patch antennas," IET Microwave Antenna & Propagation, Vol. 1, No. 3, 770-775, June 2007.
doi:10.1049/iet-map:20050263 Google Scholar

17. Guo, Y. X., et al., "Double U-slot rectangular patch antenna," Electronics Letters, Vol. 34, No. 19, 1805-1806, September 1998.
doi:10.1049/el:19981283 Google Scholar

18. Radavaram, S. and M. Pour, "Wideband radiation reconfigurable microstrip patch antenna loaded with two inverted U-slots," IEEE Transactions on Antennas & Propagation, Vol. 67, No. 3, 1501-1508, December 2018.
doi:10.1109/TAP.2018.2885433 Google Scholar

19. Islam, M. T., M. N. Shakib, and N. Misran, "Multi-slotted microstrip patch antenna for wireless communication," Progress In Electromagnetic Research Letters, Vol. 10, 11-18, 2009.
doi:10.2528/PIERL09060704 Google Scholar

20. Sharma, S. K. and L. Shafai, "Performance of a novel Ψ-shaped microstrip patch antenna with wide bandwidth," IEEE Antennas Wireless Propagation Letters, Vol. 8, 468-471, April 2009. Google Scholar

21. Ansari, J. A., et al., "Broadband rectangular microstrip antenna loaded with double U-shaped slot," International Journal of Microwave and Optical Technology Letters, Vol. 6, No. 4, 185-190, July 2011. Google Scholar

22. Neves, E. S. et al., "Single layer rectangular patch antenna with two pair of parallel slits," Microwave and Optical Technology Letters, Vol. 37, No. 5, 355-359, June 2003.
doi:10.1002/mop.10916 Google Scholar

23. Deshmukh, A. A., D. Singh, and K. P. Ray, "Modified designs of broadband E-shape microstrip antennas," Sadhana-Academy Proceedings in Engineering Science, Vol. 3, No. 3, 44-64, Springer Publication, March 2019. Google Scholar

24. Deshmukh, A. A. and K. P. Ray, "Analysis of broadband Ψ-shaped microstrip antennas," IEEE Antennas and Propagation Magazine, Vol. 55, No. 2, 107-123, June 2013.
doi:10.1109/MAP.2013.6529321 Google Scholar

25. Deshmukh, A. A., S. Nagarbowdi, and K. P. Ray, "Broadband variations of Isosceles Triangular Microstrip Antennas (ITMSAs)," IEEE Antennas and Propagation Magazine, Vol. 60, No. 2, 34-47, April 2018.
doi:10.1109/MAP.2018.2796019 Google Scholar

26. Deshmukh, A. A. and K. P. Ray, "Broadband proximity fed modified rectangular microstrip antennas," IEEE Magazine on Antennas and Propagation, Vol. 53, No. 5, 41-56, October 2011.
doi:10.1109/MAP.2011.6138427 Google Scholar

27. Yoo, J.-U. and H.-W. Son, "A simple compact wideband microstrip antenna consisting of three staggered patches," IEEE Antennas and Wireless Propagation Letters, Early Access, September 2020. Google Scholar

28. Venkata, A., P. Chavali, and A. A. Deshmukh, "Half U-slot and rectangular slot loaded nearly square microstrip antennas for wideband response," Progress In Electromagnetic Research C, Vol. 104, 129-141, 2020. Google Scholar

29. Liu, S., W. Wu, and D.-G. Fang, "Single-feed dual-layer dual-band E-shaped and U-slot patch antenna for wireless communication application," IEEE Antennas and Wireless Propagation Letters, Vol. 15, 468-471, July 2015. Google Scholar

30. Perli, B. R. and A. M. Rao, "Characteristics mode analysis of wideband microstrip antenna," Progress In Electromagnetic Research C, Vol. 97, 201-212, 2019.
doi:10.2528/PIERC19091401 Google Scholar

31. Chen, Y. and C.-F. Wang, "Characteristic-mode-based improvement of circularly polarized U-slot and E-shaped patch antennas," IEEE Antennas and Wireless Propagation Letters, Vol. 11, 1474-1477, 2012.
doi:10.1109/LAWP.2012.2231046 Google Scholar

32. CST Microwave studio, Version 2019. Google Scholar

Professor Amit A. Deshmukh

Professor Venkata A. P. Chavali