Directional coupler for a phase-independent power measurement, comprises coupling loss in forward direction and coupling loss in backward direction

摘要

The directional coupler (20) comprises a coupling loss in a forward direction and the coupling loss in a backward direction. A decoupling occurs in the forward direction and the backward direction. Bypasses (291,292) are connected to impedance arrangements (210,230) with a changeable impedance, particularly ports (3,4). An independent claim is also included for a method for adjusting a directional coupler with a coupling loss in a forward direction.