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2024-06-01
Recent Trends in Compact Planar Antennas at 5G Sub-6 GHz and mmWave Frequency Bands for Automotive Wireless Applications: a Review
By
Progress In Electromagnetics Research C, Vol. 143, 169-180, 2024
Abstract
5G wireless communication offers higher channel capacity, high data rate, sufficient bandwidth, enhanced coverage, and reliable link as compared to the previous generation mobile networks. Also, 5G becomes more relevant with the recent launches of low earth orbit satellites by various ventures like starlink, amazon, one web, etc. As these satellites have heights up to the range from 300 km to 1000 km, the free space path loss decreases drastically which in turn improves the signal reliability and efficient communication at dead spots. With these advancements, antenna researchers have the freedom to design compact, easy to manufacture, with adequate gain user equipment terminal antennas which can be easily integrated in the modern passenger car body. This paper will focus on the recent development in the design considerations of the compact antenna design at sub-6 GHz (n78 frequency band) and mm wave (n278 frequency band) according to 3gpp standards. This manuscript also discusses the various design specifications like selection of material for antennas, design complexity, feeding methods, fabrication and measurement challenges and performance parameters which include reflection coefficient, gain, polarization, axial ratio, cross polarization discrimination, radiation efficiency, radiation pattern shape, etc. The proposed antenna design considerations will facilitate the possible integration into the various parts of the car body according to the recent vehicular applications to uninterrupted communication.
Citation
Ashish Kumar, Mohammad Aljaidi, Manpreet Singh, Mohammed Sanad Alshammari, Amjad A. Alsuwaylimi, and Sami M. Alenezi, "Recent Trends in Compact Planar Antennas at 5G Sub-6 GHz and mmWave Frequency Bands for Automotive Wireless Applications: a Review," Progress In Electromagnetics Research C, Vol. 143, 169-180, 2024.
doi:10.2528/PIERC24022708
References

1. Sharma, Manish, Ashwni Kumar, Vaishali Kikan, Gaurika Jaitly, Siddhi Bhardwaj, Neha, and Takhshish Bano, "Conformal ultra-compact narrowband 60.0 GHz four-port millimeter wave MIMO antenna for wearable short-range 5G application," Wireless Networks, Vol. 30, 1815-1831, 2024.

2. Quttoum, Ahmad Nahar, Ayoub Alsarhan, Abidalrahman Moh’d, Osama Alshareet, Suhieb Nawaf, Fawaz Khasawneh, Mohammad Aljaidi, Mohammed Alshammari, and Anjali Awasthi, "ABLA: Application-based load-balanced approach for adaptive mapping of datacenter networks," Electronics, Vol. 12, No. 17, 3689, 2023.

3. Salameh, Haythem Bany and Mustafa Ali, "Tree-based multicast routing and channel assignment for enhanced throughout in emerging cognitive radio networks," The International Arab Journal of Information Technology, Vol. 20, No. 3A, 435-445, 2023.

4. Del Portillo, Inigo, Bruce G. Cameron, and Edward F. Crawley, "A technical comparison of three low earth orbit satellite constellation systems to provide global broadband," Acta Astronautica, Vol. 159, 123-135, 2019.

5. Sharma, Manish, Vaishali Kikan, Rana Gill, and Ashwni Kumar, "A comprehensive review of theory and designing of 28GHz 5th generation MIMO antenna," 2023 International Conference on Sustainable Emerging Innovations in Engineering and Technology (ICSEIET), 104-109, Ghaziabad, India, 2023.

6. Saied, Osama, Omprakash Kaiwartya, Mohammad Aljaidi, Sushil Kumar, Mufti Mahmud, Rupak Kharel, Farah Al-Sallami, and Charalampos C. Tsimenidis, "LiNEV: visible light networking for connected vehicles," Photonics, Vol. 10, No. 8, 925, 2023.

7. Gongora-Torres, Juan Misael, Cesar Vargas-Rosales, Alejandro Aragón-Zavala, and Rafaela Villalpando-Hernandez, "Link budget analysis for LEO satellites based on the statistics of the elevation angle," IEEE Access, Vol. 10, 14518-14528, 2022.

8. Balanis, Constantine A., Antenna Theory: Analysis and Design, John Wiley & Sons, 2016.

9. Boukarkar, Abdelheq, Xian Qi Lin, Yuan Jiang, and Xiao Fan Yang, "A compact frequency-reconfigurable 36-states patch antenna for wireless applications," IEEE Antennas and Wireless Propagation Letters, Vol. 17, No. 7, 1349-1353, Jul. 2018.

10. Samara, Ghassan, Mohammad Aljaidi, Essam Al Daoud, Maram Y. Al-Safarini, Ghassan M. Alsayyed, and Sattam Almatarneh, "Message broadcasting algorithm implementation using mobile long term evolution and narrow band Internet of Things over intelligent transportation system (ITS)," 2022 International Arab Conference on Information Technology (ACIT), 1-7, IEEE, Nov. 2022.

11. Addepalli, Tathababu, Manish Sharma, M. Satish Kumar, Naveen Kumar Gollamudi, Prabhakara Rao Kapula, and Ch. Manohar Kumar, "Self-isolated miniaturized four-port multiband 5G sub 6 GHz MIMO antenna exclusively for n77/n78 & n79 wireless band applications," Wireless Networks, Vol. 30, No. 2, 1037-1053, 2024.

12. Sharma, Manish, Prabhakara Rao Kapula, Shailaja Alagrama, Kanhaiya Sharma, Ganga Prasad Pandey, Dinesh Kumar Singh, Milind Mahajan, and Anupma Gupta, "Miniaturized quad-port conformal multi-band (QPC-MB) MIMO antenna for on-body wireless systems in microwave-millimeter bands," IEEE Access, Vol. 11, 105982-105999, 2023.

13. Sarkar, Debdeep and Kumar Vaibhav Srivastava, "A compact four-element MIMO/diversity antenna with enhanced bandwidth," IEEE Antennas and Wireless Propagation Letters, Vol. 16, 2469-2472, 2017.

14. Sharawi, Mohammad S., "Current misuses and future prospects for printed multiple-input, multiple-output antenna systems [wireless corner]," IEEE Antennas and Propagation Magazine, Vol. 59, No. 2, 162-170, Apr. 2017.

15. Lei, Siyuan, Gao Wei, Kangkang Han, Tiancheng Qiu, and Min Wang, "Dual circularly polarized and linearly sweeping leaky-wave antenna," IEEE Antennas and Wireless Propagation Letters, Vol. 23, No. 1, 369-373, Jan. 2024.

16. Aljaidi, Mohammad, Ayoub Alsarhan, Ghassan Samara, Yazan Alaya AL-Khassawneh, Yousef Ali Al-Gumaei, Hamzeh Aljawawdeh, and Abdullah Alqammaz, "A critical evaluation of a recent cybersecurity attack on itunes software updater," 2022 International Engineering Conference on Electrical, Energy, and Artificial Intelligence (EICEEAI), 1-6, IEEE, 2022.

17. Wang, Hai, Xue Lei, Tian-dong Duan, Tian-peng Li, Ming-yang Zhao, Jun Gao, and Pan Lu, "Circularly polarized waveguide aperture array antenna with a wide axial ratio bandwidth," IEEE Antennas and Wireless Propagation Letters, Vol. 21, No. 8, 1644-1648, Aug. 2022.

18. Wang, Jingru, Yuehe Ge, and Zhizhang Chen, "A circularly-polarized mechanically beam-steerable antenna," 2021 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting (APS/URSI), 1191-1192, Singapore, Singapore, 2021.

19. Alfattani, Safwan, Wael Jaafar, Yassine Hmamouche, Halim Yanikomeroglu, and Abbas Yongaçoglu, "Link budget analysis for reconfigurable smart surfaces in aerial platforms," IEEE Open Journal of the Communications Society, Vol. 2, 1980-1995, 2021.

20. Tayyab, Umais, Hans-Peter Petry, Ashish Kumar, Md. Golam Robbani, Thomas Wack, and Matthias A. Hein, "Link budget and design approach of a non-terrestrial 5G automotive antenna," 2022 52nd European Microwave Conference (EuMC), 864-867, Milan, Italy, 2022.

21. Ahmed, Waleed Abdelrahim and Quanyuan Feng, "A novel compact CP antenna with wide axial ratio bandwidth for worldwide UHF RFID handheld reader," International Journal of Antennas and Propagation, Vol. 2019, Article ID 2497450, 2019.

22. Sharma, Vijay and Tejpal Jhajharia, "Square slot antenna for wide circularly polarized bandwidth and axial ratio beamwidth," Electrical, Control and Communication Engineering, Vol. 17, No. 1, 1-11, 2021.

23. Xu, Rui, Jianying Li, Yang-Xiao Qi, Guangwei Yang, and Jiang-Jun Yang, "A design of triple-wideband triple-sense circularly polarized square slot antenna," IEEE Antennas and Wireless Propagation Letters, Vol. 16, 1763-1766, 2017.

24. Ellis, Mubarak Sani, Zhiqin Zhao, Jiangniu Wu, Xiaoxiang Ding, Zaiping Nie, and Qing-Huo Liu, "A novel simple and compact microstrip-fed circularly polarized wide slot antenna with wide axial ratio bandwidth for C-band applications," IEEE Transactions on Antennas and Propagation, Vol. 64, No. 4, 1552-1555, Apr. 2016.

25. Srivastava, Karunesh, Brijesh Mishra, and Rajeev Singh, "Microstrip-line-fed inverted L-shaped circularly polarized antenna for C-band applications," International Journal of Microwave and Wireless Technologies, Vol. 14, No. 4, 502-510, 2022.

26. Suo, Ying, Jiawei Li, and Wei Li, "CPW-fed wideband circular polarized square antenna with ground slot and partial feed," 2020 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting, 365-366, Montreal, QC, Canada, 2020.

27. Ong, C. S., M. F. Karim, L. C. Ong, T. M. Chiam, and A. Alphones, "A compact 2 × 2 circularly polarized antenna array for energy harvesting," 2010 Asia-Pacific Microwave Conference, 1977-1980, Yokohama, Japan, 2010.

28. Jie, Ang Ming, Muhammad Faeyz Karim, Luo Bin, Francois Chin, Michael Ong, et al. "A proximity-coupled circularly polarized slotted-circular patch antenna for RF energy harvesting applications," 2016 IEEE Region 10 Conference (TENCON), 2027-2030, Singapore, 2016.

29. Sitompul, Peberlin Parulian, Josaphat Tetuko Sri Sumantyo, Farohaji Kurniawan, and Mohammad Nasucha, "Axial ratio and gain enhancement of a circular-ring slot antenna using a pair of asymmetrical rectangular slots and a parasitic patch for a radio beacon on a nanosatellite," Aerospace, Vol. 6, No. 4, 39, 2019.

30. Midya, Manas, Shankar Bhattacharjee, Goutam Kumar Das, and Monojit Mitra, "Dual-band dual-polarized compact planar monopole antenna for wide axial ratio bandwidth application," International Journal of RF and Microwave Computer-Aided Engineering, Vol. 30, No. 5, e22152, 2020.

31. Evans, H., P. Gale, B. Aljibouri, E. G. Lim, E. Korolkeiwicz, and A. Sambell, "Application of simulated annealing to design of serial feed sequentially rotated 2× 2 antenna array," Electronics Letters, Vol. 36, No. 24, 1987-1988, 2000.

32. Chen, Aixin, Chuo Yang, Zhizhang Chen, Yanjun Zhang, and Yingyi He, "Design of multilevel sequential rotation feeding networks used for circularly polarized microstrip antenna arrays," International Journal of Antennas and Propagation, Vol. 2012, Article ID 304816, 2012.

33. Ta, Son Xuat and Ikmo Park, "Planar wideband circularly polarized metasurface-based antenna array," Journal of Electromagnetic Waves and Applications, Vol. 30, No. 12, 1620-1630, 2016.

34. Elahi, Manzoor, Son Trinh-Van, Youngoo Yang, Kang-Yoon Lee, and Keum-Cheol Hwang, "Compact and high gain 4× 4 circularly polarized microstrip patch antenna array for next generation small satellite," Applied Sciences, Vol. 11, No. 19, 8869, 2021.

35. Ta, Son Xuat and Ikmo Park, "Compact wideband circularly polarized patch antenna array using metasurface," IEEE Antennas and Wireless Propagation Letters, Vol. 16, 1932-1936, 2017.

36. Feng, Botao, Jiexin Lai, Kwok L. Chung, Tieh-Yuh Chen, Yeyu Liu, and Chow-Yen-Desmond Sim, "A compact wideband circularly polarized magneto-electric dipole antenna array for 5G millimeter-wave application," IEEE Transactions on Antennas and Propagation, Vol. 68, No. 9, 6838-6843, Sep. 2020.

37. Srinivasan, K., M. Balasaraswathi, C. S. Boopathi, and Huy Hung Tran, "Single-layer wideband circularly polarized antenna array using sequential phase feed for C-band applications," Wireless Networks, Vol. 26, No. 6, 4163-4172, 2020.

38. Verma, Anamika, Mahima Arrawatia, and Girish Kumar, "Broadband series-fed circularly polarized microstrip antenna array," 2020 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting, 225-226, Montreal, QC, Canada, 2020.

39. Fabiani, B. M. and D. C. Nascimento, "Circularly-polarized antenna array for beam steering," 2016 IEEE International Symposium on Antennas and Propagation (APSURSI), 737-738, Fajardo, PR, USA, 2016.

40. Wang, Yi, Lei Wang, and Yunqing Sun, "Design of L-circularly polarized microstrip antenna array at Ka band," 2010 International Conference on Microwave and Millimeter Wave Technology, 15-17, Chengdu, China, 2010.

41. Yeh, Shihyuan and Zhong Chen, "Designing a broadband circularly polarized patch antenna array for millimeter-wave beamforming," 2019 8th Asia-Pacific Conference on Antennas and Propagation (APCAP), 205-206, Incheon, Korea (South), 2019.

42. Zhang, Long, Steven Gao, Qi Luo, Paul R. Young, Wenting Li, and Qingxia Li, "Inverted-S antenna with wideband circular polarization and wide axial ratio beamwidth," IEEE Transactions on Antennas and Propagation, Vol. 65, No. 4, 1740-1748, Apr. 2017.

43. Raeesi, Amir, Hussam Al-Saedi, Wael M. Abdel-Wahab, Suren Gigoyan, and Safieddin Safavi Naeini, "Ka-band circularly-polarized antenna array with wide gain and axial ratio bandwidth," 2021 15th European Conference on Antennas and Propagation (EuCAP), 1-5, Dusseldorf, Germany, 2021.

44. Liu, Yilin, Kama Huang, and Xia Luo, "Circularly polarized antenna array fed by air-bridge free CPW-slotline network," International Journal of Antennas and Propagation, Vol. 2017, Article ID 5230142, 2017.

45. Lu, Zhengyan, Le Yang, and Lingsheng Yang, "Design of a broadband circularly polarized antenna array," Progress In Electromagnetics Research M, Vol. 82, 195-203, 2019.

46. El-Hassan, M. Abo, K. F. A. Hussein, and K. H. Awadalla, "Circularly polarized planar antenna array using linear polarized microstrip antenna with beamforming for SAR applications," Journal of Physics: Conference Series, Vol. 1447, No. 1, 012008, Cairo, Egypt, Sep. 2019.

47. Le, Tu Tuan, Yong-Deok Kim, and Tae-Yeoul Yun, "All-textile broadband circularly-polarized 2 × 2 array antenna based on metasurface," IEEE Access, Vol. 12, 16673-16681, 2024.

48. Hu, Wei, Guangjun Wen, Daniele Inserra, Yongjun Huang, Jian Li, and Zhizhang Chen, "A circularly polarized antenna array with gain enhancement for long-range UHF RFID systems," Electronics, Vol. 8, No. 4, 400, 2019.

49. Singh, Jasmeet, Ralf Stephan, and Matthias A. Hein, "Low-profile penta-band automotive patch antenna using horizontal stacking and corner feeding," IEEE Access, Vol. 7, 74198-74205, 2019.

50. Tayyab, Umais, Ashish Kumar, Yihan Li, Ralf Stephan, Matthias A. Hein, and Jasmeet Singh, "Plastic-embedded patch antenna array for automotive satellite communication in the ka-band," 2021 1st International Conference on Microwave, Antennas & Circuits (ICMAC), 1-4, Islamabad, Pakistan, 2021.

51. Tayyab, Umais, Hans-Peter Petry, Ashish Kumar, Md. Golam Robbani, Thomas Wack, and Matthias A. Hein, "Link budget and design approach of a non-terrestrial 5G automotive antenna," 2022 52nd European Microwave Conference (EuMC), 864-867, Milan, Italy, 2022.

52. Tayyab, Umais, Ashish Kumar, Hans-Peter Petry, Md. Golam Robbani, Thomas Wack, and Matthias A. Hein, "Circularly polarized patch antenna array for 5G automotive satellite communications," 2023 53rd European Microwave Conference (EuMC), 794-797, Berlin, Germany, 2023.

53. Tayyab, Umais, Ashish Kumar, Hans-Peter Petry, Muhammad Ehtisham Asghar, and Matthias A. Hein, "Dual-band nested circularly polarized antenna array for 5G automotive satellite communications," Applied Sciences, Vol. 13, No. 21, 11915, 2023.

54. Mao, Chun-Xu, Steven Gao, Yi Wang, Qing-Xin Chu, and Xue-Xia Yang, "Dual-band circularly polarized shared-aperture array for C -/ X -band satellite communications," IEEE Transactions on Antennas and Propagation, Vol. 65, No. 10, 5171-5178, Oct. 2017.

55. Yu, Chia-An, Eric S. Li, Huayan Jin, Yue Cao, Guan-Ren Su, Wenquan Che, and Kuo-Sheng Chin, "24 GHz horizontally polarized automotive antenna arrays with wide fan beam and high gain," IEEE Transactions on Antennas and Propagation, Vol. 67, No. 2, 892-904, Feb. 2019.

56. Hamberger, Gerhard F., Stefan Trummer, Uwe Siart, and Thomas F. Eibert, "Circularly polarized antenna array for automotive applications," 2017 42nd International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz), 1-3, Cancun, Mexico, 2017.

57. Nikam, Amruta and Rupali Patil, "Design of circularly polarized antenna for vehicular GNSS application," 2023 Second International Conference on Electrical, Electronics, Information and Communication Technologies (ICEEICT), 01-04, Trichirappalli, India, 2023.

58. Liu, Ying, Zhuang Ai, Guifeng Liu, and Yongtao Jia, "An integrated shark-fin antenna for MIMO-LTE, FM, and GPS applications," IEEE Antennas and Wireless Propagation Letters, Vol. 18, No. 8, 1666-1670, Aug. 2019.

59. Kwon, Oh-Yun, Reem Song, and Byung-Sung Kim, "A fully integrated shark-fin antenna for MIMO-LTE, GPS, WLAN, and WAVE applications," IEEE Antennas and Wireless Propagation Letters, Vol. 17, No. 4, 600-603, Apr. 2018.

60. Chen, Chen, Hao Gan, Hong-Li Peng, Cheng Peng, Guang-Hui Xu, and Jun-Fa Mao, "High performance V2X antennas designed in integrated shark-fin environment," 2020 International Conference on Microwave and Millimeter Wave Technology (ICMMT), 1-3, Shanghai, China, 2020.

61. Zhou, Yonghong, Ting Jiang, Hanxin Li, and Fangyuan Chen, "A 5G MIMO multi-band low-profile antenna design for automotive shark-fin systems," IEEE Antennas and Wireless Propagation Letters, Vol. 23, No. 5, 1588-1592, 2024.

62. Saleem, Ilyas, M. Ali Babar Abbasi, Dmitry Zelenchuk, Syed Muzahir Abbas, and Subhas Mukhopadhyay, "GPS antenna with perpendicular quad-elements for autonomous vehicle’s shark fin aerial," 2023 5th Australian Microwave Symposium (AMS), 25-26, Melbourne, Australia, 2023.

63. Ghafari, Elias, Andreas Fuchs, Diana Eblenkamp, and Daniel N. Aloi, "A vehicular rooftop, shark-fin, multiband antenna for the GPS/LTE/cellular/DSRC systems," 2014 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC), 237-240, Palm Beach, Aruba, 2014.

64. Michel, Andrea, Rajesh Kumar Singh, and Paolo Nepa, "A low-profile cellular antenna module for vehicular applications," 2023 17th European Conference on Antennas and Propagation (EuCAP), 1-4, Florence, Italy, 2023.

65. Hardman, Mirco and Stefan Lindenmeier, "A wideband automotive 4x4-MIMO 5G antenna system with decoupling circuit for a single shark fin cover," 2023 17th European Conference on Antennas and Propagation (EuCAP), 1-5, Florence, Italy, 2023.

66. Eshaq, Nahel, Hanseung Lee, Hyok J. Song, Daniel N. Aloi, and Gregg Kittinger, "Vehicle spoiler integrated and hidden 5G antenna," IEEE Antennas and Wireless Propagation Letters, Vol. 22, No. 4, 734-738, Apr. 2023.

67. Lee, Hanseung, Hyok J. Song, and Nahel Eshaq, "Compact UWB cellular antenna integrated into vehicle spoiler," 2022 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting (AP-S/URSI), 473-474, Denver, CO, USA, 2022.

68. Chen, Chen, Qinshu Chen, Hongli Peng, and Junfa Mao, "Mutual coupling reduction for MIMO LTE antenna system with a neutralization line in shark-fin environment," 2021 International Conference on Microwave and Millimeter Wave Technology (ICMMT), 1-3, Nanjing, China, 2021.

69. Michel, Andrea, Paolo Nepa, Michele Gallo, Ilenia Moro, Andrea Polo Filisan, and Daniel Zamberlan, "Printed wideband antenna for LTE-band automotive applications," IEEE Antennas and Wireless Propagation Letters, Vol. 16, 1245-1248, 2016.

70. Chletsou, Adamantia, Yuxiao He, John F. Locke, and John Papapolymerou, "Multi-band, flexible, lightweight antenna on LCP for automotive applications," 2020 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting, 1507-1508, Montreal, QC, Canada, 2020.

71. Wang, Johnson J. H., "Miniaturized multifunction shared-aperture automobile antenna for terrestrial and satellite communications," IEICE Proceedings Series, Vol. 53, 2011.

72. Lindenmeier, S., I. Goncharova, S. Hastürkoğlu, and M. Bueno Diez, "Antennas for terrestrial communication in vehicles and their interaction with antennas for satellite services," 2017 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC), 334-337, Verona, Italy, 2017.

73. Kapoor, Ankush, Pradeep Kumar, and Ranjan Mishra, "High gain modified Vivaldi vehicular antenna for IoV communications in 5G network," Heliyon, Vol. 8, No. 5, e09336, 2022.