A Novel Broadband Circularly Polarized Monopole Antenna

Zhenya LI; Xiaosong ZHU; Jianhua ZHANG

doi:10.11999/JEIT180094

Volume 40 Issue 11

Oct. 2018

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Article Navigation > Journal of Electronics & Information Technology > 2018 > 40(11): 2705-2711

Zhenya LI, Xiaosong ZHU, Jianhua ZHANG. A Novel Broadband Circularly Polarized Monopole Antenna[J]. Journal of Electronics & Information Technology, 2018, 40(11): 2705-2711. doi: 10.11999/JEIT180094

Citation:

Zhenya LI, Xiaosong ZHU, Jianhua ZHANG. A Novel Broadband Circularly Polarized Monopole Antenna[J]. Journal of Electronics & Information Technology, 2018, 40(11): 2705-2711. doi: 10.11999/JEIT180094

Zhenya LI, Xiaosong ZHU, Jianhua ZHANG. A Novel Broadband Circularly Polarized Monopole Antenna[J]. Journal of Electronics & Information Technology, 2018, 40(11): 2705-2711. doi: 10.11999/JEIT180094

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A Novel Broadband Circularly Polarized Monopole Antenna

doi: 10.11999/JEIT180094

Institute of Electronic Countermeasure, National University of Defense Technology, Hefei 230037, China

Funds: The National Natural Science Foundation of China (61671454)

Received Date: 2018-01-23
Rev Recd Date: 2018-07-13

Available Online: 2018-07-27

Publish Date: 2018-11-01

Abstract

Abstract

A novel broadband circularly polarized monopole antenna is proposed by microstrip feed line. The antenna is composed of C-shaped patch and an improved ground plane with the overall size of 25×25×1 mm³. The impedance bandwidth and axial ratio bandwidth of the antenna can be effectively widened by cutting the corner on the C-shaped patch and adding triangular stubs on the ground plane. The design procedure of the antenna is given, and the working mechanism of the circularly polarized antenna is analyzed from the surface current distributions. Besides, the antenna is fabricated and measured. Simulated and measured results show that the antenna has ultra wide impedance bandwidth and axial ratio bandwidth. The operating bandwidth of the antenna is 4.35～12 GHz (relative bandwidth 93.6%), and the 3 dB axial ratio bandwidth is 4.15～11.8 GHz (relative bandwidth 95.9%). At the same time, the radiation performance and gain characteristics of the antenna are measured and the measured results are in good agreement with the simulated results, which proves the effectiveness of the antenna. The antenna can be applied to Ultra-WideBand (UWB) wireless communication systems and satellite communication systems.
- Monopole antenna,
- Axial ratio,
- Ultra WideBand (UWB),
- Circularly polarized

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References(17)

References

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