Design of Ka-band waveguide circularly polarized antenna

Shusheng Peng, Xiangqin Li, Jiaojiao Fan and Li Wu

Journal of Electromagnetic Waves and Applications, 2014, vol. 28, issue 8, 1018-1030

Abstract: A wide-beam waveguide circularly polarized antenna is designed at Ka band in this paper, in which a linearly polarized wave is transformed into a circularly polarized wave through an elliptical and gradual change waveguide structure. The design model is simulated and optimized in 3D electromagnetic simulation software HFSS.14. Simulation results show that the 3 dB beam-width is greater than 80° (±40°) and the axial ratio is less than 3 dB in this beam, the total gain is about 9 dB, and the voltage standing wave ratio is less than 1.47 in 32–38 GHz. Measured results are in good agreement with the simulation results; the antenna performance meets the design requirements.

Date: 2014
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DOI: 10.1080/09205071.2014.903577

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