Journal of the Korean Institute of Telematics and Electronics (대한전자공학회논문지)
- Volume 8 Issue 4
- /
- Pages.25-30
- /
- 1971
- /
- 1016-135X(pISSN)
Magnetically tunable narrow band stop and/or pass directional coupling YIG filter
YIG를 사용한 자계동조 방향성결합 협대혁 통과 및 차단 여파기
- Park, Gyu-Tae (Dept. of Electronic Engineering Yonsel University. seoul) ;
- Lee, Jong-Ak (Dept. of Electronic Engineering Yonsel University. seoul) ;
- Hwang, Geum-Chan
- Published : 1971.10.01
Abstract
Fabrication and measurements of the magnetically tunable YIG band pass or stop filter at X-band are discussed. Using two YIG spheres located at the region of r-f circularly polarized magnetic field between the strip lines, the pass or stop characteristics of the filter are obtained. In the case of band stop, the output level is typically 25db lower than the input power. Contrarily for the pass band, the pass band level is 22db higher than the stop frequency region. The experimental results are in good agreement with the theoretical values of FMR. Further it is shown that the structure can be used for a directional coupler.
직류자계로 가변동조되는 YIG여파기의 설계및 측정을 논하였다. 직각으로 굽힌 박판전송선과 2개의 YIG구를 RF 원형회전자계로 분리되는 곳에 위치시켜 차단및 투과특성을 얻었다. 차단특성은 -25db 였으며 통과특성은 이보다 약간 낮은 22db였다. FMR에 관한 이론치와 실측치는 잘 일치하였으며 방향성결합기로 사용될 수 있음을 보였다.
Keywords