High performance and high power circularly polarized horn antenna for K-band microwave processing systems

P H Hung; W Y Chiang; Y C Hsieh; F H Cheng; J D Wang; S H Chen

doi:10.1063/1.5045632

High performance and high power circularly polarized horn antenna for K-band microwave processing systems

Rev Sci Instrum. 2019 Jan;90(1):014707. doi: 10.1063/1.5045632.

Authors

P H Hung¹, W Y Chiang², Y C Hsieh³, F H Cheng³, J D Wang³, S H Chen¹

Affiliations

¹ Department of Physics, National Central University, Zhongli District, Taoyuan City 32001, Taiwan.
² Department of Electrical Engineering, Ming Chi University of Technology, Taishan District, New Taipei 24301, Taiwan.
³ Materials and Electro-Optic Research Division, National Chung-Shan Institute of Science and Technology, Longtan District, Taoyuan City 32546, Taiwan.

PMID: 30709177
DOI: 10.1063/1.5045632

Abstract

A single-ridged K-band circularly polarized horn antenna offering excellent performance has been developed by improving the polarization conversion and manufacturing complexity. The numerical and experimental results are consistent showing the return loss of this antenna to be less than -20 dB and the axial ratio at the boresight direction to be less than 0.7 dB in the frequency range from 23.5 GHz to 24.5 GHz. In addition, the gain of this antenna is higher than 20 dB. The newly designed circularly polarized horn antenna has a simple structure and outperforms many existing circular polarization devices in high-power operations.