| 摘要 |
<p>Disclosed is a transmission line device for coupling two waves, such as horizontal and vertical polarization waves of satellite broadcasting, which are travelling in a particular direction along a pair of main transmission lines, selectively to a branch line without problem of mismatch. The branch line is composed of a single feeder and selection of the two waves can be effected simply by applying positive or negative voltage to this feeder. The two waves are fed to a coupler having an output connected to the feeder and oppositely poled diodes which are made conductive by positive and negative voltages, respectively, to couple one or the other of the two waves to the output.</p> |
