In this paper, a 2~18 GHz wideband 6-port network is designed and fabricated to extend the measurement frequency bandwidth of noise parameter measurement method using 6-port network. In order to design a broadband 6-port network, a wilkinson power divider and a directional coupler with wideband characteristics are designed. The wilkinson power divider is designed as a three-section structure to achieve wideband characteristics. The direction coupler is designed as a three-section structure and slot-coupled structure using multi-layer substrate to obtain wideband characteristics. A wideband 6-port network is designed and fabricated combining the designed power divider and coupler. The measured results of the fabricated 6-port network for the 2~18 GHz band show characteristics applicable to the noise parameter measurement method. 30, 2016 ; Revised January 16, 2017 ; Accepted January 17, 2017. (ID No. 20161130-126) ․Corresponding Author: Kyung-Whan Yeom (e-mail: khyeom@cnu.ac.kr)에 의해서 처음 제안된 6-포트 회로망은 2-포 트로 입력된 입사전압들에 대해 출력되는 나머지 4-포트 에서 전력을 scalar 측정할 경우, 이 두 입사전압의 크기와 위상을 수학적으로 결정할 수 있다는 것이다. 이 6-포트 회로망은 4개의 출력포트가 독립적이기만 하면 되기 때 문에, 유일한 구조일 필요는 없으며, 여러 가지 형태로 구 ⓒ
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