한국전자파학회논문지 (The Journal of Korean Institute of Electromagnetic Engineering and Science)
- 제7권1호
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- Pages.43-52
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- 1996
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- 1226-3133(pISSN)
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- 2288-226X(eISSN)
비가역성 쌍토로이드 페라이트 변위기 설계
Design of Nonreciprocal Twin-toroidal Ferrite Phase Shifter
초록
비가역성 쌍토로이드 페라이트 변위기를 설계, 제작하고 그 특성 실험올 하였다. 변위기의 최적 칫수를 구하기 위해 ABCD 행렬 방법을 사용하였으며, 빈 도파관 부분과 페라이트가 삽입된 부분과의 임피던스 정합을 위해
Nonreciprocal twin-toroid ferrite phase shifter is designed, fabricated, and tested. ABCD matrix method is used to design the phase shifter and to compute its optimum dimen- sions. Quarter-wave two-section impedance matching transformers are utilized in order to match the impedance of the empty guide to that of the ferrite-loaded guide. Driving circuit controls the current needed to drive the phase shifter. Measured insertion loss and VSWR characteristics within the operaring band(9.1GHz ~ 9.5GHz) are less than 1.2dB and 1.15, respectively. After temperature compensation technique is appied to the phase shifter, the measured phase error of the phase shifter is less than
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