| 摘要 |
PURPOSE: A power distributer and a power coupler are provided to reduce the characteristic impedance of a transfer line consisting the directional coupler, to realize a power distributer having more distributing numbers, and to reduce power loss. CONSTITUTION: A power distributer comprises N branch line type directional couplers(7,8,9),input lines(1) and N+1 output lines(2a-2d). If the impedances of the input lines and the impedance of the input port(7a) of a first branch line type directional coupler(7) are equal, corresponding input line and the input port are connected through a transfer line having same impedance to the impedance or directly connected. If the impedances are not equal, corresponding input line and the input port are connected through a first impedance converter.
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