| 摘要 |
A circuit can include a tandem directional coupler comprising a first directional coupler and a second directional coupler connected in tandem. Each of the first and second directional couplers can have a first strip and a second strip. Port 3 of the first directional coupler can be connected to Port 1 of the second directional coupler. Port 4 of the first directional coupler can be connected to Port 2 of the second directional coupler. |
