volume | PIER Journals

Abstract

An Ultra-wideband Microstrip fed patch antenna with a defective ground surface is presented in this paper. The above-mentioned antenna comprises a T-slot in the ground plane and a Pi-slot in a rectangular patch. The proposed antenna is developed and modeled using the High-Frequency Structure Simulation tool on an RTDuroid 5880 substrate with a thickness of 1.6 mm and a dielectric constant of 2.2. A T-shaped defect is carved in the ground plane to enhance the antenna's radiation properties, gain, and bandwidth. A conventional Pi-slotted patch antenna operating at 9.74 GHz with a return loss of 19.7 dB is designed, followed by an ultra-wideband antenna embedded with a T-slot in the partial ground surface operating from 7.15 GHz to 10.925 GHz with an impedance bandwidth (S₁₁ < −10 dB) of 3.775 GHz. It showcases exceptional characteristics with a peak gain of 6.99 dBi at 8.95 GHz. A satisfactory agreement is found between the experimental data and simulation results. The proposed Pi-slot patch antenna with the defective ground has applications in radar, satellite, weather monitoring, and vehicle speed detection for law enforcement.

1. Balanis, C. A., "Antenna theory," Analysis and Design, 3rd Edition, Wiley, New York, 2005.

2. Garg, R., P. Bhartia, I. Bahl, and A. Ittipiboon, Microstrip Antenna Design Book, Artech House, 2000.

3. Haque, S. K. M. and K. M. Parvez, "Slot antenna miniaturization using slit, strip, and loop loading techniques," IEEE Transactions on Antennas and Propagation, Vol. 65, No. 5, 2215-2221, May 2017.
doi:10.1109/TAP.2017.2684191

4. Parkash, D. and R. Khanna, "Multiband antenna structure for heterogeneous wireless communication systems using DGS technique," International Journal of Microwave and Wireless Technologies, Vol. 6, No. 5, 521-526, 2014.
doi:10.1017/S1759078713001104

5. Salgare, D. S. and S. R. Mahadik, "A review of defected ground structure for microstrip antennas," International Research Journal of Engineering and Technology, Vol. 2, No. 6, 150-154, 2015.

6. Lim, J.-S., C.-S. Kim, Y.-T. Lee, D. Ahn, and S. Nam, "A spiral-shaped defected ground structure for coplanar waveguide," IEEE Microwave and Wireless Components Letters, Vol. 12, No. 9, 330-332, 2002.
doi:10.1109/LMWC.2002.803208

7. Boutejdar, A., G. Nadim, S. Amari, and A. S. Omar, "Control of band- stop response of cascaded microstrip low-pass-bandstop filters using arrowhead slots in backside metallic ground plane," IEEE Antennas and Propagation Society International Symposium, Vol. 1B, 574-577, 2005.
doi:10.1109/APS.2005.1551623

8. Li, J., J. Chen, Q. Xue, J. Wang, W. Shao, and L. Xue, "Compact microstrip lowpass filter based on defected ground structure and compensated microstrip line," Proceedings of IEEE MTT-S International Microwave Symposium, Long Beach, Calif, USA, June 2005.

9. Chen, J.-X., J.-L. Li, K.-C. Wan, and Q. Xue, "Compact quasielliptic function filter based on defected ground structure," IEEE Proceedings: Microwaves, Antennas and Propagation, Vol. 153, No. 4, 320-324, 2006.
doi:10.1049/ip-map:20050235

10. Jan, J.-Y. and J.-W. Su, "Bandwidth enhancement of a printed wide-slot antenna with a rotated slot," IEEE Transactions on Antennas and Propagation, Vol. 53, No. 6, 2111-2114, 2005.
doi:10.1109/TAP.2005.848518

11. Weng, L. H., Y. C. Guo, X. W. Shi, and X. Q. Chen, "An overview on defected ground structure," Progress In Electromagnetics Research B, Vol. 7, 173-189, 2008.
doi:10.2528/PIERB08031401

12. Kurniawan, A. and S. Mukhlishin, "Wideband antenna design and fabrication for modern wireless communications systems," Science Direct, Procedia Technology, Vol. 11, 348-353, 2013.
doi:10.1016/j.protcy.2013.12.201

13. Yadav, M. V., S. Baudha, Y. Bansal, and S. K. Verma, "A novel compact rectangular slot antenna with ladder structure for ultra-wideband applications," Telecommunications and Radio Engineering, Vol. 81, No. 1, 2022.
doi:10.1615/TelecomRadEng.2022038178

14. Suvarna, K., N. Ramamurthy, and D. V. Vardhan, "A tri-band miniaturized antenna using fractal defected ground structure for C/X and Ku-band applications," Progress In Electromagnetics Research M, 115-128, 2022.
doi:10.2528/PIERM22032301

15. Khoiro, M. and R. A. Firdaus, "A microstrip triple-band antenna with T-strip and dumbbell defected ground structure for wireless applications," International Joint Conference on Science and Engineering 2021 (IJCSE 2021), 429-433, Atlantis Press, 2021.

16. Khandelwal, M. K., B. K. Kanaujia, and S. Kumar, "Defected ground structure: Fundamentals, analysis, and applications in modern wireless trends," International Journal of Antennas and Propagation, Vol. 2017, Article ID 2018527, 22pages, 2017.

17. Gopi, D., A. R. Vadaboyina, and J. R. K. Dabbakuti, "DGS based monopole circular-shaped patch antenna for UWB applications," SN Applied Sciences, Vol. 3, No. 2, 2021.
doi:10.1007/s42452-020-04123-w

18. Ullah, S., C. Ruan, M. S. Sadiq, T. Ul Haq, A. K. Fahad, and W. He, "Super wide band, defected ground structure (DGS), and stepped meander line antenna for WLAN/ISM/WiMAX/UWB and other wireless communication applications," Sensors, Vol. 20, No. 6, 1735, 2020.
doi:10.3390/s20061735

Ms. Shaik Jabeen

Prof. Gumireddy Hemalatha