volume | PIER Journals

Abstract

The wideband gap-coupled configuration of an E-shape microstrip antenna, with two C-shape microstrip patches and loaded with a parasitic printed rectangular loop element, is proposed. In 1200 MHz frequency range and on a substrate thickness of 0.11λ_g, with an optimum inter-spacing between the frequencies of TM₁₀ and TM₀₂ resonant modes of the rectangular patch along with TM₂₀ resonant mode frequencies on the parasitic C-shape and printed rectangular loop element, the maximum reflection coefficient bandwidth of 945 MHz (68.11%) is achieved. The gap-coupled antenna offers broadside radiation characteristics across the complete bandwidth with a peak broadside gain of 9 dBi. Design methodology to realize wideband gap-coupled configuration in different frequency ranges is presented which yields similar result. The antenna response is experimentally verified, which yields close agreement against the simulated result.

1. Kumar, Girish and Kamala Prasan Ray, Broadband Microstrip Antennas, Artech House, 2002.

2. Wong, Kin-Lu, Compact and Broadband Microstrip Antennas, John Wiley & Sons, 2004.

3. Kovitz, Joshua M. and Yahya Rahmat-Samii, "Using thick substrates and capacitive probe compensation to enhance the bandwidth of traditional CP patch antennas," IEEE Transactions on Antennas and Propagation, Vol. 62, No. 10, 4970-4979, 2014. Google Scholar

4. Herscovici, Naftali, "A wide-band single-layer patch antenna," IEEE Transactions on Antennas and Propagation, Vol. 46, No. 4, 471-474, 1998. Google Scholar

5. Kumar, Girish and K. Gupta, "Nonradiating edges and four edges gap-coupled multiple resonator broad-band microstrip antennas," IEEE Transactions on Antennas and Propagation, Vol. 33, No. 2, 173-178, 1985. Google Scholar

6. Aanandan, C. K., P. Mohanan, and K. G. Nair, "Broad-band gap coupled microstrip antenna," IEEE Transactions on Antennas and Propagation, Vol. 38, No. 10, 1581-1586, 1990. Google Scholar

7. Kandwal, Abhishek and Sunil Kumar Khah, "A novel design of gap-coupled sectoral patch antenna," IEEE Antennas and Wireless Propagation Letters, Vol. 12, 674-677, 2013. Google Scholar

8. Balaji, Uma, "Bandwidth enhanced circular and annular ring sectoral patch antennas," Progress In Electromagnetics Research Letters, Vol. 84, 67-73, 2019. Google Scholar

9. Wang, Zhe, Juhua Liu, and Yunliang Long, "A simple wide-bandwidth and high-gain microstrip patch antenna with both sides shorted," IEEE Antennas and Wireless Propagation Letters, Vol. 18, No. 6, 1144-1148, 2019. Google Scholar

10. Xu, Kai Da, Han Xu, Yanhui Liu, Jianxing Li, and Qing Huo Liu, "Microstrip patch antennas with multiple parasitic patches and shorting vias for bandwidth enhancement," IEEE Access, Vol. 6, 11624-11633, 2018. Google Scholar

11. Ou, Jun-Hui, Shi-Wei Dong, Jingwen Huang, Xiu Yin Zhang, Wenquan Che, and Quan Xue, "A compact microstrip antenna with extended half-power beamwidth and harmonic suppression," IEEE Transactions on Antennas and Propagation, Vol. 68, No. 6, 4312-4319, 2020. Google Scholar

12. Sun, Chao, "A design of low profile microstrip patch antenna with bandwidth enhancement," IEEE Access, Vol. 8, 181988-181997, 2020. Google Scholar

13. Cao, Yufan, Yang Cai, Wenquan Cao, Baokun Xi, Zuping Qian, Tao Wu, and Lei Zhu, "Broadband and high-gain microstrip patch antenna loaded with parasitic mushroom-type structure," IEEE Antennas and Wireless Propagation Letters, Vol. 18, No. 7, 1405-1409, 2019. Google Scholar

14. Rathod, S. M., R. N. Awale, K. P. Ray, and Amar D. Chaudhari, "Broadband gap-coupled half-hexagonal microstrip antenna fed by microstrip-line resonator," International Journal of RF and Microwave Computer-Aided Engineering, Vol. 28, No. 6, e21273, 2018. Google Scholar

15. Sun, Wangyu, Yue Li, Zhijun Zhang, and Zhenghe Feng, "Broadband and low-profile microstrip antenna using strip-slot hybrid structure," IEEE Antennas and Wireless Propagation Letters, Vol. 16, 3118-3121, 2017. Google Scholar

16. Cheng, Bo, Zhengwei Du, and Daiwei Huang, "A differentially fed broadband multimode microstrip antenna," IEEE Antennas and Wireless Propagation Letters, Vol. 19, No. 5, 771-775, 2020. Google Scholar

17. Chopra, Rinkee and Girish Kumar, "Broadband and high gain multilayer multiresonator elliptical microstrip antenna," IET Microwaves, Antennas & Propagation, Vol. 14, No. 8, 821-829, 2020. Google Scholar

18. Yoo, Jeong-Ung and Hae-Won Son, "A simple compact wideband microstrip antenna consisting of three staggered patches," IEEE Antennas and Wireless Propagation Letters, Vol. 19, No. 12, 2038-2042, 2020. Google Scholar

19. Wi, Sang-Hyuk, Yong-Shik Lee, and Jong-Gwan Yook, "Wideband microstrip patch antenna with U-shaped parasitic elements," IEEE Transactions on Antennas and Propagation, Vol. 55, No. 4, 1196-1199, 2007. Google Scholar

20. Lu, Hua-Xiao, Fang Liu, Ming Su, and Yuan-An Liu, "Design and analysis of wideband U‐slot patch antenna with U‐shaped parasitic elements," International Journal of RF and Microwave Computer-Aided Engineering, Vol. 28, No. 2, e21202, 2018. Google Scholar

21. Chavali, Venkata A. P. and Amit A. Deshmukh, "Wideband designs of proximity fed isosceles triangular microstrip antennas gap-coupled with parasitic pairs of sectoral patches," International Journal of RF and Microwave Computer-Aided Engineering, Vol. 32, No. 6, e23132, 2022. Google Scholar

22. Yang, Dong, Huiqing Zhai, Chaozong Guo, and Hongkun Li, "A compact single-layer wideband microstrip antenna with filtering performance," IEEE Antennas and Wireless Propagation Letters, Vol. 19, No. 5, 801-805, 2020. Google Scholar

23. Li, Wei-Wen, Qiu-Hao Li, Yang Meng, Jin-Yu Wang, and Wei-Ming Xu, "A broadband microstrip patch antenna with multiple open slots," Microwave and Optical Technology Letters, Vol. 61, No. 3, 626-632, 2019. Google Scholar

24. Radavaram, Sai and Maria Pour, "Wideband radiation reconfigurable microstrip patch antenna loaded with two inverted U-slots," IEEE Transactions on Antennas and Propagation, Vol. 67, No. 3, 1501-1508, 2018. Google Scholar

25. De Dieu Ntawangaheza, Jean, Liguo Sun, Chen Yang, Yingying Pang, and Gerard Rushingabigwi, "Thin-profile wideband and high-gain microstrip patch antenna on a modified AMC," IEEE Antennas and Wireless Propagation Letters, Vol. 18, No. 12, 2518-2522, 2019. Google Scholar

26. Wong, Kin-Lu and Wen-Hsis Hsu, "A broad-band rectangular patch antenna with a pair of wide slits," IEEE Transactions on Antennas and Propagation, Vol. 49, No. 9, 1345-1347, 2001. Google Scholar

27. Deshmukh, Amit A. and Kamala Prasan Ray, "Analysis of broadband Psi (Ψ)-shaped microstrip antennas," IEEE Antennas and Propagation Magazine, Vol. 55, No. 2, 107-123, 2013. Google Scholar

28. Feng, Shu, Li Zhang, Zibin Weng, and Yong-Chang Jiao, "A wideband differential-fed microstrip patch antenna based on quad-mode resonance with radiation patterns correction," IEEE Transactions on Antennas and Propagation, Vol. 71, No. 6, 5404-5409, 2023. Google Scholar

29. Liu, Xuekang, Wei Hu, Steven Gao, Lehu Wen, Qi Luo, Rui Xu, and Ying Liu, "A wideband triple-mode differentially fed microstrip patch antenna," IEEE Antennas and Wireless Propagation Letters, Vol. 20, No. 7, 1160-1164, 2021. Google Scholar

30. Chen, Yikai, Shiwen Yang, and Zaiping Nie, "Bandwidth enhancement method for low profile E-shaped microstrip patch antennas," IEEE Transactions on Antennas and Propagation, Vol. 58, No. 7, 2442-2447, 2010. Google Scholar

31. Mondal, K. and P. P. Sarkar, "Gain and bandwidth enhancement of microstrip patch antenna for WiMAX and WLAN applications," IETE Journal of Research, Vol. 67, No. 5, 726-734, 2021. Google Scholar

32. Chavali, Venkata A. P. and Amit A. Deshmukh, "Multi-resonator variations of circular microstrip antenna with narrow annular sectoral patches for wideband response," Progress In Electromagnetics Research C, Vol. 114, 143-158, 2021. Google Scholar

33. CST Microwave Studio, Version 2019.

Professor Venkata A. P. Chavali

Professor Amit A. Deshmukh