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High‐Performance Dual‐Circularly Polarized Reflector Antenna Feed |
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| Authors: | Joo‐Young Lim Jargalsaikhan Nyambayar Je‐Young Yun Dong‐Hyun Kim Tae‐Hyung Kim Bierng‐Chearl Ahn Jae‐Hoon Bang |
| Affiliation: | 1. Joo‐Young Lim (dlawndud2002@naver.com), Jargalsaikhan Nyambayar (nyamba005@yahoo.com), Je‐Young Yun (zeros0703@gmail.com), Bierng‐Chearl Ahn (bician@cbu.ac.kr), and Jae‐Hoon Bang (corresponding author, jhbang@cbnu.ac.kr) are with the Department of Radio and Communication Engineering, Chungbuk National University, Cheongju, Rep. of Korea.;2. Dong‐Hyun Kim (mattew@kari.re.kr) and Tae‐Hyung Kim (thkim@kari.re.kr) are with the Naro Space Center, Korea Aerospace Research Institute, Daejeon, Rep. of Korea. |
| Abstract: | This paper presents a high‐performance dual‐circularly polarized feed employing a dielectric‐filled circular waveguide. Novel features are incorporated in the proposed feed, such as a dielectric rod radiator for high gain and good impedance matching; dual quarter‐wave chokes for low axial ratio over wide angles and for low back radiation; an integrated septum polarizer; and two end‐launch‐type coaxial‐to‐waveguide transitions. The proposed feed shows excellent performance at 5.0 GHz to 5.2 GHz. |
| Keywords: | Reflector antenna feed dual‐circular polarization low axial ratio |