Design of Ka-band waveguide circularly polarized antenna

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...

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Bibliographic Details
Published inJournal of electromagnetic waves and applications Vol. 28; no. 8; pp. 1018 - 1030
Main Authors Peng, Shusheng, Li, Xiangqin, Fan, Jiaojiao, Wu, Li
Format Journal Article
LanguageEnglish
Published Taylor & Francis 24.05.2014
Subjects
circularly polarized antenna
gain
ka band
VSWR
wide beam
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Summary: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.
ISSN:0920-5071
1569-3937
DOI:10.1080/09205071.2014.903577