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1. (WO2018138919) SYNTHESIZER-DISTRIBUTOR

Pub. No.:    WO/2018/138919    International Application No.:    PCT/JP2017/003213
Publication Date: Fri Aug 03 01:59:59 CEST 2018 International Filing Date: Tue Jan 31 00:59:59 CET 2017
IPC: H01P 5/19
H01P 1/26
Applicants: HITACHI KOKUSAI ELECTRIC INC.
株式会社日立国際電気
Inventors: GOTO Yusaburo
後藤 友三郎
SAKAMAKI Keiichi
酒巻 敬一
WAKABAYASHI Yu
若林 佑
Title: SYNTHESIZER-DISTRIBUTOR
Abstract:
A synthesizer-distributor comprises: a first impedance converter provided between a first port and a second port; a second impedance converter provided between the first port and a third port; and an isolation unit provided between the second port and the third port. The isolation unit is provided with: a balun configured by a first semi-rigid cable and a second semi-rigid cable; and a plurality of terminating resistors. The respective line lengths of the first impedance converter, the second impedance converter, and a third impedance converter are ¼ of the wavelength of the center frequency. When the impedance of the second port and the third port is Ri, the impedance of the first port is Ro, and the impedance of the first impedance converter and the second impedance converter is W, the relationship is W = (2 x Ri x Ro) ½.