PCB 기반 릿지 구조를 이용한 저비용 WR-19 인라인 어댑터 설계 및 제작에 관한 연구 = A Study on the Design and Fabrication of a Low-Cost WR-19 Inline Adapter Using a PCB-Based Ridge Structure

다국어 초록 (Multilingual Abstract)

In this study, a low-cost in-line WR-19 waveguide-to-coaxial adapter using a PCB-based ridge structure was proposed to reduce the manufacturing cost and fabrication difficulty of conventional metallic ridge structures. The proposed structure was designed to realize electrical characteristics similar to those of a conventional metallic ridge by using stepped copper patterns and via holes formed on a printed circuit board.
A prototype adapter was fabricated based on the proposed structure, and its performance was measured using a vector network analyzer (VNA). Simulation and measurement results showed that reflection coefficients of less than -15 dB were achieved over the entire operating frequency band.
Therefore, the proposed adapter can simplify the fabrication process and reduce the manufacturing cost compared with conventional metallic ridge structures while maintaining stable electrical performance, and it is expected to be effectively applied to millimeter-wave waveguide-to-coaxial adapter designs.

목차 (Table of Contents)

• 제1장 서론 1
• 1.1 연구 배경 1
• 1.2 WR-19 금속 릿지 어댑터 제작 및 분석 2
• 1.3 연구 필요성 3
• 제2장 기본 이론 5
• 2.1 전압정재파비와 반사계수 5
• 2.2 동축 선로 7
• 2.3 직사각형 도파관 8
• 2.4 릿지 도파관 10
• 2.5 Chebyshev 임피던스 변환기 11
• 제3장 PCB 기반 인라인 도파관-동축 어댑터 설계 12
• 3.1 제안된 어댑터 구조 12
• 3.2 PCB 기반 릿지 구조 설계 13
• 3.3 설계 변수 최적화 14
• 3.4 공진 현상 분석 및 개선 17
• 제4장 어댑터 제작 및 성능 분석 21
• 4.1 어댑터 제작 21
• 4.2 측정 방법 23
• 4.3 시뮬레이션 및 측정 결과 비교 24
• 4.4 기존 연구와의 비교 26
• 제5장 결론 27
• 참 고 문 헌 28