volume | PIER Journals

Abstract

To deal with the problems of low gain and low data transmission rate of millimeter wave antenna during long-distance transmission, a high-gain millimeter wave array multiple-input-multiple-output (MIMO) antenna with series-parallel hybrid feed is proposed. The radiating structure consists of a combination of multiple rectangular patches, to make the proposed design resonate within the desired frequency band of 39 GHz. The antenna line array consists of eight radiating patches connected in series via transmission lines, providing an operating bandwidth of 1.02 GHz and a peak gain of 15.9 dB, and utilizing the Chebyshev synthesis method to control the side lobe level below -20 dB. In order to obtain higher gain, two antenna line arrays are connected through a Y-shaped feeding network, which utilizes the mutual coupling between the antennas to increase the bandwidth of the antenna to 1.25 GHz and provide a simulated gain of 17.6 dBi. Furthermore, the proposed array antennas are placed side-by-side to form a four-port MIMO antenna, which does not require any decoupling structure and has the isolation of more than 25 dB. The radiation efficiency is as high as 99%, the Envelope Correlation Coefficient (ECC) less than 0.003, and the Diversity Gain (DG) greater than 9.98. The measured results show that the operating frequency band of the antenna is 38.0∼39.6 GHz, and the operating bandwidth is 1.6 GHz. In the operating frequency band, the peak gain of the antenna is 17.45 dBi, Finally, the frequency characteristics and radiation characteristics of the antenna when bending are analyzed. The results show that the bending of the antenna leads to a slight shift in the resonant frequency, but the relative bandwidth remains unchanged. The gain has decreased, indicating that the antenna is able to work normally after bending and has a wider range of application scenarios.

1. Rappaport, Theodore S., Yunchou Xing, George R. MacCartney, Andreas F. Molisch, Evangelos Mellios, and Jianhua Zhang, "Overview of millimeter wave communications for fifth-generation (5G) wireless networks --- With a focus on propagation models," IEEE Transactions on Antennas and Propagation, Vol. 65, No. 12, 6213-6230, Dec. 2017.

2. Khalily, Mohsen, Rahim Tafazolli, Pei Xiao, and Ahmed A. Kishk, "Broadband mm-Wave microstrip array antenna with improved radiation characteristics for different 5G applications," IEEE Transactions on Antennas and Propagation, Vol. 66, No. 9, 4641-4647, 2018.

3. Mandloi, Mantar Singh, Parul Gupta, Ajay Parmar, Priyanshi Malviya, and Leeladhar Malviya, "Beamforming MIMO array antenna for 5G-millimeter-wave application," Wireless Personal Communications, Vol. 129, No. 1, 153-172, 2023.

4. Dzagbletey, Philip Ayiku and Young-Bae Jung, "Stacked microstrip linear array for millimeter-wave 5G baseband communication," IEEE Antennas and Wireless Propagation Letters, Vol. 17, No. 5, 780-783, 2018.

5. Zhou, J., "Research and design of 77 GHz millimeter wave radar antenna array," University of Electronic Science and Technology, 2024.

6. Hu, Wei, Qiaosong Li, Hao Wu, Zhan Chen, Lehu Wen, Wen Jiang, and Steven Gao, "Dual-band antenna pair with high isolation using multiple orthogonal modes for 5G smartphones," IEEE Transactions on Antennas and Propagation, Vol. 71, No. 2, 1949-1954, 2023.

7. Khalid, Mahnoor, Syeda Iffat Naqvi, Niamat Hussain, MuhibUr Rahman, Fawad, Seyed Sajad Mirjavadi, Muhammad Jamil Khan, and Yasar Amin, "4-port MIMO antenna with defected ground structure for 5G millimeter wave applications," Electronics, Vol. 9, No. 1, 71, 2020.

8. Wei, Feng, Xinxin Liu, Xue-Zhi Ding, Xi-Bei Zhao, and Pei-Yuan Qin, "A balanced filtering antenna array with high gain, steep selectivity, and multi-radiation nulls parallel-fed by differential broadband network," IEEE Transactions on Antennas and Propagation, Vol. 71, No. 12, 9926-9931, Dec. 2023.

9. Huang, Daosheng, Guanghui Xu, Jie Wu, Wei Wang, Lixia Yang, Zhi-Xiang Huang, Xian-Liang Wu, and Wen-Yan Yin, "A microstrip dual-split-ring antenna array for 5G millimeter-wave dual-band applications," IEEE Antennas and Wireless Propagation Letters, Vol. 21, No. 10, 2025-2029, 2022.

10. Ding, Xin and Zihao Chen, "An asymmetric millimeter wave MIMO antenna array for 5G applications," 2023 IEEE 6th International Conference on Electronic Information and Communication Technology (ICEICT), 313-316, Qingdao, China, Sep. 2023.

11. Geschke, Riana Helena, Carlos Sempere Chaves, and Christian Krebs, "Surface wave mitigation based on finite EBG structures for W-band radar millimetre-wave MIMO antenna arrays," 2023 53rd European Microwave Conference (EuMC), 661-664, Berlin, Germany, Oct. 2023.

12. Chithradevi, R. and B. S. Sreeja, "A compat UWB MIMO antenna with high isolation and low correlation for wireless applications," 2017 IEEE International Conference on Antenna Innovations & Modern Technologies for Ground, Aircraft and Satellite Applications (iAIM), 1-4, Bangalore, India, 2017.

13. Rajkumar, S., A. Anto Amala, and K. T. Selvan, "Isolation improvement of UWB MIMO antenna utilising molecule fractal structure," Electronics Letters, Vol. 55, No. 10, 576-579, 2019.

14. Manage, Prabhakar S., Udaykumar Naik, Shaik Kareemulla, and Vijay Rayar, "Dual band notched UWB-MIMO antenna incorporating CSRR for WLAN and X band applications," 2020 Third International Conference on Smart Systems and Inventive Technology (ICSSIT), 149-152, Tirunelveli, India, 2020.

15. Shen, Xiumei, Yujia Liu, Luyu Zhao, Guan-Long Huang, Xiaowei Shi, and Qiulin Huang, "A miniaturized microstrip antenna array at 5G millimeter-wave band," IEEE Antennas and Wireless Propagation Letters, Vol. 18, No. 8, 1671-1675, 2019.

16. Zhou, Xiangyu, Huiqing Zhai, Lei Xi, Zichun Wei, Shaobo Ma, and Licheng Zheng, "A low‐profile four‐element MIMO antenna array with new decoupling structures," Microwave and Optical Technology Letters, Vol. 60, No. 10, 2511-2516, 2018.

17. Shariff, B. G. P., Akshay Anil Naik, Tanweer Ali, Pallavi R. Mane, Rajiv Mohan David, Sameena Pathan, and Jaume Anguera, "High-isolation wide-band four-element MIMO antenna covering Ka-band for 5G wireless applications," IEEE Access, Vol. 11, 123030-123046, Oct. 2023.

18. Tsao, Yi-Fan, Arpan Desai, and Heng-Tung Hsu, "Dual-band and dual-polarization CPW fed MIMO antenna for fifth-generation mobile communications technology at 28 and 38 GHz," IEEE Access, Vol. 10, 46853-46863, 2022.

19. Khalid, Mahnoor, Syeda Iffat Naqvi, Niamat Hussain, MuhibUr Rahman, Fawad, Seyed Sajad Mirjavadi, Muhammad Jamil Khan, and Yasar Amin, "4-port MIMO antenna with defected ground structure for 5G millimeter wave applications," Electronics, Vol. 9, No. 1, 71, 2020.

20. Kamal, Mian Muhammad, Shouyi Yang, Xin-cheng Ren, Ahsan Altaf, Saad Hassan Kiani, Muhammad Rizwan Anjum, Amjad Iqbal, Muhammad Asif, and Sohail Imran Saeed, "Infinity shell shaped MIMO antenna array for mm-Wave 5G applications," Electronics, Vol. 10, No. 2, 165, 2021.

21. Tariq, Saba, Syeda I. Naqvi, Niamat Hussain, and Yasar Amin, "A metasurface-based MIMO antenna for 5G millimeter-wave applications," IEEE Access, Vol. 9, 51805-51817, Mar. 2021.

22. Mandloi, Mantar Singh, Parul Gupta, Ajay Parmar, Priyanshi Malviya, and Leeladhar Malviya, "Beamforming MIMO array antenna for 5G-millimeter-wave application," Wireless Personal Communications, Vol. 129, No. 1, 153-172, 2023.

23. Khan, Jalal, Sadiq Ullah, Usman Ali, Farooq Ahmad Tahir, Ildiko Peter, and Ladislau Matekovits, "Design of a millimeter-wave MIMO antenna array for 5G communication terminals," Sensors, Vol. 22, No. 7, 2768, 2022.
doi:10.3390/s22072768

24. Sehrai, Daniyal Ali, Mehr E. Munir, Saad Hassan Kiani, Nosherwan Shoaib, Abeer D. Algarni, Hela Elmannai, Moustafa M. Nasralla, and Tanweer Ali, "A high gain array based millimeter wave MIMO antenna with improved isolation and decorrelated fields," IEEE Access, Vol. 12, 89794-89803, 2024.

25. Dash, Jogesh Chandra, Debdeep Sarkar, and Yahia M. M. Antar, "Design of series-fed antenna array with low sidelobe level and improved azimuth fied-of-view for automotive RADAR application," 2023 XXXVth General Assembly and Scientific Symposium of the International Union of Radio Science (URSI GASS), 1-4, Sapporo, Japan, 2023.

26. Fang, Cong, Ming Su, and Yuanan Liu, "A low side lobe level microstrip antenna array for 77 GHz automotive radar," 2020 IEEE 6th International Conference on Computer and Communications (ICCC), 448-452, Chengdu, China, 2020.

27. Li, Bin, Yike Qiu, Jinping Zhang, Ye Deng, Zhipeng Zhou, and Lei Sun, "W-band high-gain hybrid-fed microstrip patch array with low sidelobe patterns," 2020 International Conference on Microwave and Millimeter Wave Technology (ICMMT), 1-3, Shanghai, China, 2020.

28. Wei, Wang and Xuetian Wang, "A 77 GHz series fed weighted antenna arrays with suppressed sidelobes in E- and H-plane," Progress In Electromagnetics Research Letters, Vol. 72, 23-28, 2017.

29. Ram, Nanik, Hongmin Gao, Muhammad Shahzad Sadiq, and Arun Chand Bahadur, "77 GHz corporate feed series microstrip antenna array for the applications of automotive radar," 2020 9th Asia-Pacific Conference on Antennas and Propagation (APCAP), 1-2, Xiamen, China, 2020.

Dr. Wenhui Liu

Dr. Xinchun Li