Patent ID: 9219453
Filing Date: 2015-12-22
Classification: G06F,G06G,H03F,H03G,H04L

Abstract:
1. A circuit for use with an amplifier that includes multiple amplifier paths, the circuit comprising: a first series 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 adjustable attenuator series coupled between the first input and the first output; a second series circuit in parallel with the first series circuit, the second series 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 and a second adjustable attenuator series 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.