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US 12,744,546 B2Granted
Bias circuit for an active phase shifter
AssigneeQUALCOMM Incorporated
InventorsWing Fat Andy Lau, Jeremy Darren Dunworth
Life of this patent
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Abstract
An active phase shifter includes a gain control signal generator circuit having a constant transconductance (Gm) bias circuit and a bias digital-to-analog converter (DAC), and a vector modulator configured to receive bias outputs of the gain control signal generator circuit.
Claims20
An active phase shifter, comprising:
- a gain control signal generator circuit having a constant transconductance (Gm) bias circuit and a bias digital-to-analog converter (DAC);
- and
- a vector modulator configured to receive bias outputs of the gain control signal generator circuit.
A method for biasing a phase shifter, comprising:
- generating a set of references that mimic operation of devices sought to be controlled in a vector modulator;
- and
- using the set of references to generate control signals to control the vector modulator.
A device, comprising:
- means for generating a set of references that mimic operation of devices sought to be controlled in a vector modulator;
- and
- means for using the set of references to generate control signals to control the vector modulator.
Dependencies are inferred from the claim text.