| 摘要 |
The conversion of transmission lines uses a circuit which comprises a substrate with a microstrip transmission line having a signal conductor mounted on one face of the substrate and a ground plane mounted to the other face of the substrate. A coplanar wave guide with a centre conductor and two coplanar ground strips is mounted on one face of the substrate. The ground plane is coupled to the two ground strips. The circuit has an active device having a control terminal, an output terminal, and a common terminal. The active device is mounted adjacent to the substrate with the control terminal and the output terminal each coupled to a different respective one of the signal conductor and the centre conductor. At least one common terminal is coupled to one of the ground strips, so that the active device couples a signal between the signal conductor and the centre conductor. |
