안테나 PIM(Passive Intermodulation) 수준 측정은 안테나가 갖는 송.수신 특성 때문에 신뢰성을 보장받지 못하고 있으며, 전자파무반사실과 같은 측정환경에서 만들어지는 외부 PIM 근원에 의해 상당한 영향을 받는다. 본 논문에서는 안테나 PIM 측정에 이용되는 Reflect 방법에 대한 안테나 PIM 모델을 수립하였다. 모델의 이론적 해석(시뮬레이션)과 실험적 측정결과에서 동시에 관찰되는 PIM 수준의 Null Point 현상을 통해 전자파무반사실의 흡수체에서 발생하는 PIM 근원의 수준과 안테나로 인가되는 PIM 신호의 경로차가 안테나의 PIM 측정 결과에 상당한 영향을 미치고 있음을 확인하였다.
KSP Keywords
passive intermodulation
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