A Study on the Taegeuk Shaped Directional Coupler with Improved Power Split Ratio

개선된 전력 분배율을 갖는 태극형 방향성 결합기에 관한 연구

  • 양규식 (한국 해양대학교 전자통신공학과) ;
  • 오양현 (건국대학교 전자공학과) ;
  • 이종악 (건국대학교 전자공학과)
  • Published : 1991.06.01


This paper propose a new taegeuk shaped directional couper and verify the possibility of high power division rate in those directional coupler through the experiments. We took the taegeuk shaped structure in those proposed directional coupler to utilize a $3\lambda/4$ section of hybrid ring directional coupler actively, and calculated the branch admittances, which satisfied the condition of perfect matching and isolation in the center frequency, by even odd mode analyzing methodes. On the result, we knew that it can be realized a much higher power division rate than reported result in same circuit area within the producible resistance limit in the microstrip line, made the taegeuk shaped directional couplers with 0, 8, 16 dB power split ratio in the 10 GHz frequency using CGP - 502 plate, and confirmed the validity of theory through the experiments.