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2018•Unpublished venueRequires access

Low Axial-ratio Circularly Polarized Antenna for Airborne Linearly Polarized Radiation Measurement

Hong Bo Jing, Hui Ning, Wenxi Hao, Peng Chen

Open publisher page 1 citations

Abstract

This paper introduces a low axial-ratio circularly polarized array antenna with sequential rotations and progressive phase shifts of elements. The gain of the proposed antenna reaches 12.9 dB and the 3-dB beamwidth is about 45 degrees at 9.7 GHz. The axial ratio of the antenna is less than 1dB from 9.6 GHz to 9.8 GHz, and as low as 0.1 dB at 9.7 GHz. The application of the designed low axial-ratio circularly polarized antenna is able to effectively reduce polarization mismatch uncertainty which satisfies the requirement of precise airborne linearly polarized radiation measurement.

About this research paper

What this paper is about

This paper introduces a low axial-ratio circularly polarized array antenna with sequential rotations and progressive phase shifts of elements. The gain of the proposed antenna reaches 12.9 dB and the 3-dB beamwidth is about 45 degrees at 9.7 GHz. The axial ratio of the antenna is less than 1dB from 9.6 GHz to 9.8 GHz, and as low as 0.1 dB at 9.7 GHz. The application of the designed low axial-ratio circularly polarized antenna is able to effectively reduce polarization mismatch uncertainty which satisfies the requirement of precise airborne linearly polarized radiation measurement.

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Available abstract

This paper introduces a low axial-ratio circularly polarized array antenna with sequential rotations and progressive phase shifts of elements. The gain of the proposed antenna reaches 12.9 dB and the 3-dB beamwidth is about 45 degrees at 9.7 GHz. The axial ratio of the antenna is less than 1dB from 9.6 GHz to 9.8 GHz, and as low as 0.1 dB at 9.7 GHz. The application of the designed low axial-ratio circularly polarized antenna is able to effectively reduce polarization mismatch uncertainty which satisfies the requirement of precise airborne linearly polarized radiation measurement.

Key concepts: Turnstile antenna, Axial ratio, Beamwidth, Optics, Physics, Circular polarization, Antenna (radio), Radiation pattern

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