Design of C/X dual band and dual circularly polarized shared-aperture microstrip antenna

Yao Daibo; Yang Xuan; Guo Qinggong

doi:10.11884/HPLPB202335.230224

Volume 35 Issue 10

Oct. 2023

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Yao Daibo, Yang Xuan, Guo Qinggong. Design of C/X dual band and dual circularly polarized shared-aperture microstrip antenna[J]. High Power Laser and Particle Beams, 2023, 35: 103002. doi: 10.11884/HPLPB202335.230224

Citation:

Yao Daibo, Yang Xuan, Guo Qinggong. Design of C/X dual band and dual circularly polarized shared-aperture microstrip antenna[J]. High Power Laser and Particle Beams, 2023, 35: 103002. doi: 10.11884/HPLPB202335.230224

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Design of C/X dual band and dual circularly polarized shared-aperture microstrip antenna

doi: 10.11884/HPLPB202335.230224

College of Electronics and Information Engineering, Sichuan University, Chengdu 610065, China

Received Date: 2023-07-19
Accepted Date: 2023-09-08
Rev Recd Date: 2023-09-08

Available Online: 2023-09-14

Publish Date: 2023-10-08

Abstract

Abstract

A dual band dual circularly polarized shared-aperture microstrip antenna is designed and fabricated, which can operate in the dual circular polarization mode in the C/X band, and the aperture utilization rate of the antenna is effectively improved. The parasitic structure and the L-shaped probe are applied to improve the impedance bandwidth. The shared aperture design is realized by placing the X-band antenna in the gap of the C-band antenna. The good cross-polarization ratio is realized by the symmetrical inversed phase feeding technique. The measurement results show that the impedance bandwidth and 3 dB axial ratio bandwidth of C-band are greater than 23% and 17%, respectively. The impedance bandwidth and 3 dB axial ratio bandwidth of X-band are greater than 28% and 18% respectively. The cross-polarization ratio at the test frequency points is greater than 25 dB.
- dual band dual circularly polarized,
- microstrip antenna,
- inversed phase feeding technique,
- shared-aperture

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References(15)

References

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