Phase shift and attenuation circuits for use with multiple-path amplifiers

摘要

Embodiments of circuits for use with an amplifier that includes multiple amplifier paths include a first circuit and a second circuit in parallel with the first circuit. The first circuit includes a first input coupled to a first power divider output, a first output coupled to a first amplifier path of the multiple amplifier paths, and a first adjustable phase shifter and a first attenuator series coupled between the first input and the first output. The second circuit includes a second input coupled to a second power divider output, a second output coupled to a second amplifier path of the multiple amplifier paths, and a second adjustable phase shifter coupled between the second input and the second output.

主权项

1. A circuit for use with an amplifier that includes multiple amplifier paths, the circuit comprising:
a first circuit comprising a first input coupled to a first power divider output, a first output coupled to a first amplifier path of the multiple amplifier paths, and a first adjustable phase shifter and a first attenuator series coupled between the first input and the first output; a second circuit in parallel with the first circuit, the second circuit comprising a second input coupled to a second power divider output, a second output coupled to a second amplifier path of the multiple amplifier paths, and a second adjustable phase shifter coupled between the second input and the second output; and a controller configured to receive data indicating phase shifts to be applied by the first and second adjustable phase shifters, and to control, based on the data, the phase shifts applied by the first and second adjustable phase shifters.