도파관 슬롯 배열 안테나의 유전체 커버 설계 연구 = Design of a Radome on a Waveguide Slot Array Antenna

다국어 초록 (Multilingual Abstract)

This paper presents a waveguide slot array antenna with a radome for 37.5～38.5 GHz frequency band. At first, four different types of waveguide single-slot antennas were designed using the High Frequency Structure Simulator (HFSS): (1) slot-only, (2) slot with diaphragms, (3) slot with a radome, and (4) slot with a radome and conducting cover with aperture. Those antennas were manufactured as the designed structure using a computer controlled milling technique, and the radiation characteristics (the return loss and the antenna pattern) of single-slot antennas were measured. Then, based on the study onthe single-slot antennas, a waveguide slot 16x16 array antenna with a radome has been designed with a 20 dB Chebyshev array factors. The 16x16 slot array antenna manufactured using a computer controlled milling technique, and measured for the return loss and the antenna pattern. It was found that the in-phase 16x16 slot array antenna with a pi-type feeding system has better antenna characteristics than the alternating-phase 16x16 slot array antenna with a T-type feeding system.