volume | PIER Journals

Abstract

This paper presents a novel gap coupled suspended multiband microstrip antenna suitable for wireless applications like long term evolution (LTE), wireless local area network (WLAN), Amateur radio, and Sub 6 GHz 5G wireless applications. The proposed antenna is a single layer geometry suspended in air that employs a gap-coupled feed with a parasitic strip for tuning the input impedance. The overall dimensions of the antenna are 41.4 mm x 39 mm x 3.12 mm. The presented antenna offers a total of six resonant frequencies centered at 1.70 GHz, 2.77 GHz, 3.03 GHz, 4.26 GHz, 4.58 GHz, and 5.64 GHz. Measured resonant frequencies fairly match the simulated values. Further, the gain values at these frequencies are 7.29 dBi, 6.10 dBi, 7.39 dBi, 5.39 dBi, 6.22 dBi, & 7.03 dBi, and the corresponding measured gain values are 6.92 dBi, 7.72 dBi, 4.88 dBi, 5.34 dBi, 4.25 dBi, and 6.51 dBi, respectively. Radiation patterns were measured at all these frequencies and found to have highly stable radiation characteristics except for slight asymmetry at the high frequency end of the operational band.

1. Yin, J., Q. Wu, C. Yu, H. Wang, and W. Hong, "Broadband symmetrical E-shaped patch antenna with multi-mode resonance for 5G millimeter-wave applications," IEEE Transactions on Antennas and Propagation, Vol. 67, No. 7, 4474-4483, July 2019.
doi:10.1109/TAP.2019.2911266 Google Scholar

2. Lu, H., F. Liu, W. Wang, Z. Gao, X. Bai, and Y. Li, "Capacitive probe compensation-fed wideband patch antenna with U-shaped parasitic elements for 5G/WLAN/Wi-Max applications," IEICE Express, Vol. 16, No. 16, 1-6, 2019. Google Scholar

3. Singh, D. K., B. K. Kanujia, S. Dwari, and G. P. Pandey, "Modeling of a dual circularly polarized capacitive-coupled slit loaded truncated microstrip antenna," Journal of Computational Electronics, Vol. 19, No. 4, 1564-1572, 2020.
doi:10.1007/s10825-020-01527-0 Google Scholar

4. Kasabegoudar, V. G. and K. J. Vinoy, "Coplanar capacitively coupled probe fed microstrip antennas for wideband applications," IEEE Transactions on Antennas and Propagation, Vol. 58, No. 10, 3131-3138, 2010.
doi:10.1109/TAP.2010.2055781 Google Scholar

5. Kasabegoudar, V. G. and P. Reddy, "A review of low profile single layer microstrip antennas," International Journal of Electrical and Electronic Engineering & Telecommunications, Vol. 11, No. 2, 122-131, 2022.
doi:10.18178/ijeetc.11.2.122-131 Google Scholar

6. Reddy, P. and V. G. Kasabegoudar, "Gap coupled suspended ultra-wideband microstrip antennas for 5G applications," International Journal of Engineering Trends and Technology, Vol. 71, No. 2, 371-381, 2023.
doi:10.14445/22315381/IJETT-V71I2P239 Google Scholar

7. Sun, W., Y. Li, L. Chang, H. Li, X. Qin, and H. Wang, "Dual-band dual-polarized microstrip antenna array using double-layer gridded patches for 5G millimeter-wave applications," IEEE Transactions on Antennas and Propagation, Vol. 69, No. 10, 6489-6499, October 2021.
doi:10.1109/TAP.2021.3070185 Google Scholar

8. Yang, S., G.-M. Zhang, X.-D. Yue, J.-L. Ru, and G.-P. Fan, "A dual-frequency broadband patch antenna with L-shaped probe feed for 5G communication," 2019 International Symposium on Antennas and Propagation (ISAP), 1-3, 2019. Google Scholar

9. Kasabegoudar, V. G., "Dual frequency ring antennas with coplanar capacitive feed," Progress In Electromagnetic Research C, Vol. 23, 27-39, 2011.
doi:10.2528/PIERC11060104 Google Scholar

10. Kasabegoudar, V. G. and A. Kumar, "Dual band coplanar capacitive coupled microstrip antennas with and without air gap for wireless applications," Progress In Electromagnetic Research C, Vol. 36, 105-117, 2013.
doi:10.2528/PIERC12110612 Google Scholar

11. Mok, W. C., S. H. Wong, K. M. Luk, and K. F. Lee, "Single-layer single-patch dual-band and triple-band patch antennas," IEEE Transactions on Antennas and Propagation, Vol. 61, No. 8, 4341-4344, 2013.
doi:10.1109/TAP.2013.2260516 Google Scholar

12. Gao, M. and X. Zhao, "Design of tri-band patch antenna with enhanced bandwidth and diversity pattern for indoor wireless communication," Applied Sciences, Vol. 12, 1-13, 2022.
doi:10.3390/app12083971 Google Scholar

13. Elkorany, A. S., et al., "Implementation of a miniaturized planar tri-band microstrip patch antenna for wireless sensors in mobile applications," Sensors, Vol. 22, 2022.
doi:10.1109/JSEN.2022.3164002 Google Scholar

14. Wang, L., J. Yu, T. Xie, and K. Bi, "A novel multiband fractal antenna for wireless application," International Journal of Antennas and Propagation, 1-9, 2021. Google Scholar

15. Rengasamy, R., D. Dhanasekaran, C. Chakraborty, and S. Ponnan, "Modified Minkowski fractal multiband antenna with circular-shaped split-ring resonator for wireless applications," Measurement, Vol. 182, 1-9, 2021. Google Scholar

16. Khan, Z., et al., "A single-fed multiband antenna for WLAN and 5G applications," Sensors, Vol. 20, 1-13, 2020.
doi:10.1109/JSEN.2020.2978309 Google Scholar

17. Sharma, N., A. Kumar, A. De, and R. K. Jain, "Design of compact hexagonal shaped multiband antenna for wearable and tumor detection applications," Progress In Electromagnetic Research M, Vol. 105, 205-217, 2021.
doi:10.2528/PIERM21081701 Google Scholar

18. Patel, D. H. and G. D. Makwana, "Multiband antenna for GPS, IRNSS, sub 6 GHz 5G and WLAN applications," Progress In Electromagnetic Research M, Vol. 116, 53-63, 2023.
doi:10.2528/PIERM23020902 Google Scholar

19. Patel, D. H. and G. D. Makwana, "Multiband antenna for 2G/3G/4G and sub-6 GHz 5G applications using characteristic mode analysis," Progress In Electromagnetic Research M, Vol. 115, 107-117, 2023.
doi:10.2528/PIERM22122901 Google Scholar

20. Kumar, A. and A. P. S. Pharwaha, "Development of a modified Hilbert curve fractal antenna for multiband applications," IETE Journal of Research, 1-10, 2020. Google Scholar

21. Ali, T., K. D. Prasad, and R. C. Biradar, "A miniaturized slotted multiband antenna for wireless applications," Journal of Computational Electronics, Vol. 17, 1056-1070, 2018.
doi:10.1007/s10825-018-1183-z Google Scholar

22. Ali, T., F. Nikhat, and R. C. Biradar, "A miniaturized multiband reconfigurable fractal slot antenna for GPS/GNSS/Bluetooth/WiMAX/X-band applications," AEU --- International Journal of Electronics and Communication, Vol. 94, 234-243, 2018.
doi:10.1016/j.aeue.2018.07.017 Google Scholar

23. Ahmad, I., et al., "Design and experimental analysis of multiband compound reconfigurable 5G antenna for sub-6 GHz wireless applications," Wireless Communications and Mobile Computing, 1-14, 2021. Google Scholar

24. Sultan, K., M. Ikram, and N. Nguyen-Trong, "A multiband multibeam antenna for Sub-6 GHz and mm-wave 5G applications," IEEE Antennas and Wireless Propagation Letters, Vol. 21, No. 6, 2022.
doi:10.1109/LAWP.2022.3164627 Google Scholar

25. Desai, A., et al., "Multiband inverted E and U shaped compact antenna for digital broadcasting, wireless, and sub 6 GHz 5G applications," International Journal of Electronics and Communication, Vol. 123, 1-8, 2020. Google Scholar

Dr. Pradeep Reddy

Dr. Veeresh G. Kasabegoudar