发明授权
US4814780A Variable directional coupler 失效
可变定向耦合器

Variable directional coupler
摘要:
The variable directional coupler of the subject invention employs 3, 4 or n branches in TEM transmission media, such as coax, stripline and microstrip. Precise control of the coupling is acheived by a variable susceptance connected near the mid-point of the crossover.
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