| 摘要 |
<p>The coupler (1) has four strip lines (11- 14) that are connected in a circle. Interfaces of the strip lines form an input (7), two antenna ports (8, 9) and an output (10). The strip lines have impedances that are controlled by a tuning device (17) with regard to minimizing of signal resulting at the output, where the tuning device is connected to the output. The impedances lie in the strip lines guided to the output. The impedances are formed by varactor diodes (15, 16) that are galvanically and separately inserted into two of the strip lines.</p> |
