Reflective phase shifter and multi-bit phase shifter.

摘要

The invention relates to a reflection phase shifter. BR/ According to the invention, it comprises a directional coupler (3) 3dB having first and second ends, a reflection circuit (90a) connected between the first and second ends of the coupler (3), a first circuit of resonance device comprising a first FET (7a) and a first resonant inductance coil (9) connected between the source and the drain of the FET (7a), the drain of which is connected to a node connecting the first end of the coupler (3) and the reflection circuit (90a) and whose source is grounded and a second resonance circuit comprising a second FET (7b) and a second resonant inductance coil (9) connected between the source and the drain of the FET (7b ), the drain of this FET (7b) being connected to a node connecting the second end of the coupler (3) and the reflection circuit (90a) and the source of the second FET (7b) is grounded. BR/ The invention applies in particular to phase shifters to reduce the size of the chips. / P