무전해 니켈-금 표면처리가 위상천이기의 전송손실에 미치는 영향 분석 (Effect of ENIG Surface Finish to Insertion Loss on Reflective Type Phase Shifter)

서지정보

· 발행기관 : 한국전자파학회
· 수록지 정보 : 한국전자파학회 논문지 / 36권 / 3호 / 231 ~ 235페이지
· 저자명 : 최재성, 정재영

초록

본논문에서는인쇄회로기판제작에사용되는무전해니켈-금표면처리공정이반사형위상천이기의전송손실에미치는영향을분석하였다. 반사형위상천이기는단락선로에설치된가변커패시터를제어함으로써출력위상을변화시키는구조로크기가작으면서도높은위상변화폭과낮은전송손실을보이는장점이있다. 하지만제작된반사형위상천이기 시료의전송손실이예상보다큼을확인하고이를분석하고자무전해니켈-금표면처리층을전자파시뮬레이션에반영하여분석하였다. 무전해니켈-금표면처리를하지않은시뮬레이션모델과표면처리를한측정모델의전송손실이3 GHz에서 2.9 dB의 차이가 발생한 반면, 표면처리를 반영한 모델은 그 차이가 1 dB로 줄어들었다.

영어초록

This paper presents a reflective-type phase shifter (RTPS) and the effect of an electroless nickel immersion gold (ENIG) surface finish on its insertion loss. The former is commonly used in transmit- and reflect-array designs for electrical beam steering. Its design is simple and robust, providing a high phase shift and low insertion loss. However, if proper attention is not paid to the surface finish applied on copper traces, higher-than-expected insertion losses can occur. This was demonstrated through simulations, which were compared with measurement results. Originally, there was a 2.9 dB difference in the insertion loss values between the simulation and measurement results for an S-band RTPS. After applying the ENIG layer to the simulations, the difference was reduced to 1.0 dB.

참고자료

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