High Power Laser and Particle Beams, Volume. 35, Issue 10, 103002(2023)
Design of C/X dual band and dual circularly polarized shared-aperture microstrip antenna
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.
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Daibo Yao, Xuan Yang, Qinggong Guo. Design of C/X dual band and dual circularly polarized shared-aperture microstrip antenna[J]. High Power Laser and Particle Beams, 2023, 35(10): 103002
Category: High Power Microwave Technology
Received: Jul. 19, 2023
Accepted: Sep. 8, 2023
Published Online: Nov. 30, 2023
The Author Email: Guo Qinggong (guoqingong@scu.edu.cn)