volume | PIER Journals

Abstract

A novel frequency and polarization reconfigurable water patch antenna is proposed for radio communication in the UHF band. Based on theoretical analysis and simulation results, water is an ideal material for designing transparent liquid ground. Water enhances outstanding transparency, excellent aesthetics, and high optical stealth performance for a wider range of application scenarios. The entire structure is made with polyvinyl chloride material and distilled water, except for the feed structure. By filling different cavities with liquid water, six different operating states are obtained in 1.924-2.5 GHz (26.1 %), 1.67-2.33 GHz (33 %), 0.644-2.288 GHz (112.1 %), 1.975-2.54 GHz (25 %), 1.748-2.108 GHz (18.7 %), and 1.988-2.348 GHz (16.6 %), achieving frequency reconfigurability. The antenna can be flexibly switched between linear polarization (LP) and two right-handed circular polarization (RHCP) states. The results show that the 3 dB axial ratio (AR) bandwidth covers 1.93-2.08 GHz (7.5 %) and 2.06-2.132 GHz (3.5 %). The antenna achieves high optical transparency of 100 % and a peak gain of 7.97 dBi.

1. Chen, Quangang, Juha Ala-Laurinaho, Alexander Khripkov, Janne Ilvonen, Resti Montoya Moreno, and Ville Viikari, "Varactor-based frequency-reconfigurable dual-polarized mm-Wave antenna array for mobile devices," IEEE Transactions on Antennas and Propagation, Vol. 71, No. 8, 6628-6638, 2023.

2. Zainarry, Siti Nailah Mastura, Shengjian Jammy Chen, and Christophe Fumeaux, "A frequency-reconfigurable single-feed zero-scanning antenna," IEEE Transactions on Antennas and Propagation, Vol. 71, No. 2, 1359-1368, 2022.

3. Chen, Yu, Honglei Guo, Yanfei Liu, Jing Li, Yongxin Zhan, Qiannan Wu, and Mengwei Li, "An L-slot frequency reconfigurable antenna based on MEMS technology," Micromachines, Vol. 14, No. 10, 1945, 2023.

4. Nguyen, Truong Khang, Cong Danh Bui, Adam Narbudowicz, and Nghia Nguyen-Trong, "Frequency-reconfigurable antenna with wide-and narrowband modes for sub-6 GHz cognitive radio," IEEE Antennas and Wireless Propagation Letters, Vol. 22, No. 1, 64-68, 2022.

5. Jin, Xiangyu, Shaobin Liu, Yuning Yang, and Yonggang Zhou, "A frequency-reconfigurable planar slot antenna using S-PIN diode," IEEE Antennas and Wireless Propagation Letters, Vol. 21, No. 5, 1007-1011, 2022.

6. Wang, Min and Qing-Xin Chu, "A wideband polarization-reconfigurable water dielectric resonator antenna," IEEE Antennas and Wireless Propagation Letters, Vol. 18, No. 2, 402-406, 2019.

7. Wang, Fuwei, Wenhui Luo, Zihao Xu, Ke Li, and Yuhui Ren, "Directional high gain liquid antenna using tumbler-like dielectric resonator for wireless capsule endoscopes system," IEEE Antennas and Wireless Propagation Letters, Vol. 23, No. 11, 3709-3713, 2024.

8. Chen, Zhe, Hao-Zhan Li, Hang Wong, Wei He, Jian Ren, and Tao Yuan, "A frequency-reconfigurable dielectric resonator antenna with a water layer," IEEE Antennas and Wireless Propagation Letters, Vol. 22, No. 6, 1456-1460, 2023.

9. Wang, Shiyan, Fei Fan, Feng Zhang, Yin Li, Gang Zhang, Sai-Wai Wong, and Lei Zhu, "A frequency-reconfigurable inverted-L antenna made of pure water," IEEE Antennas and Wireless Propagation Letters, Vol. 21, No. 1, 109-113, 2021.

10. Chen, Zhe, Hao-Zhan Li, Hang Wong, Xiao Zhang, and Tao Yuan, "A circularly-polarized-reconfigurable patch antenna with liquid dielectric," IEEE Open Journal of Antennas and Propagation, Vol. 2, 396-401, 2021.

11. Li, Lei, Xu Yan, Hong C. Zhang, and Qing Wang, "Polarization-and frequency-reconfigurable patch antenna using gravity-controlled liquid metal," IEEE Transactions on Circuits and Systems II: Express Briefs, Vol. 69, No. 3, 1029-1033, 2022.

12. Chishti, Abdul Rehman, Abdul Aziz, Muhammad Ali Qureshi, Muhammad Nawaz Abbasi, Abdullah M. Algarni, Azzedine Zerguine, Niamat Hussain, and Rifaqat Hussain, "Optically transparent antennas: A review of the state-of-the-art, innovative solutions and future trends," Applied Sciences, Vol. 13, No. 1, 210, 2022.

13. Montisci, Giorgio, Giovanna Mura, Giacomo Muntoni, Giovanni Andrea Casula, Francesco Paolo Chietera, and Mahmoud Aburish-Hmidat, "A curved microstrip patch antenna designed from transparent conductive films," IEEE Access, Vol. 11, 839-848, 2022.

14. Xi, Baoliang, Xianling Liang, Qian Chen, Kun Wang, Junping Geng, and Ronghong Jin, "Optical transparent antenna array integrated with solar cell," IEEE Antennas and Wireless Propagation Letters, Vol. 19, No. 3, 457-461, 2020.

15. Sun, Jie and Kwai-Man Luk, "A wideband and optically transparent water patch antenna with broadside radiation pattern," IEEE Antennas and Wireless Propagation Letters, Vol. 19, No. 2, 341-345, 2019.

16. Abdullah, Abdullah, Syed Imran Hussain Shah, Sakobyly Kiv, Jinwoo Ho, and Sungjoon Lim, "A low-cost microfluidic and optically transparent water antenna with frequency-tuning characteristics," Micromachines, Vol. 14, No. 11, 2052, 2023.

17. Sun, Jie and Kwai-Man Luk, "A wideband low cost and optically transparent water patch antenna with omnidirectional conical beam radiation patterns," IEEE Transactions on Antennas and Propagation, Vol. 65, No. 9, 4478-4485, 2017.

18. Abdelbary, M. M., Hend A. Malhat, and Saber H. Zainud-Deen, "Circularly polarized reconfigurable water based microstrip antenna," 2019 36th National Radio Science Conference (NRSC), 44-51, Port Said, Egypt, Apr. 2019.

19. Stutzman, Warren L. and Gary A. Thiele, Antenna Theory and Design, John Wiley & Sons, 2012.

20. Nguyen, Tien Dat, Jung Han Choi, and Chang Won Jung, "Optically transparent patch antennas using saltwater for WLAN applications," Journal of Electromagnetic Engineering & Science, Vol. 22, No. 6, 609-615, 2022.
doi:10.26866/jees.2022.6.r.129

21. Pijoan, Joan L., Sergi Díaza, Aurora Andújar, and Jaume Anguera, "Water dielectric microstrip patch antenna: case study at ISM 2.4 GHz," International Journal of Electronics, Vol. 109, No. 3, 462-477, 2022.

Dr. Lei Li

Ms. Jing Gao

Dr. Jingchang Nan