Patent ID: 11894809
Assignee: PSEMI CORPORATION
Field: Basic communication processes (Electrical engineering)
Classification: CPC H | IPC H

Claim 18:
19. A method for operating an amplifier according to at least a low gain-state and a high gain-state, the method comprising:
decoding an input control signal into a target gain-state comprising the low gain-state or the high gain-state;
generating biasing voltages based on the target gain-state, the generating based on a circuit comprising one or more of: b1) an analog-to-digital conversion circuit, b2) a digital-to-analog conversion circuit, b3) a digital circuit, b4) an analog circuit, and b5) a memory circuit;
providing the biasing voltages to gates of a plurality of series connected transistors of the amplifier;
based on the providing, driving a drain-to-source voltage of an output transistor of the amplifier during operation in the high gain-state higher than a drain-to-source voltage of the output transistor during operation in the low gain-state; and
based on the providing, driving a drain-to-source voltage of an input transistor of the amplifier during operation in the low gain-state higher than a drain-to-source voltage of the input transistor during operation in the high gain-state,
wherein the amplifier is a low noise amplifier (LNA) comprising the plurality of series connected transistors arranged as a stack comprising the input transistor and one or more stack transistors comprising the output transistor, the stack coupled between a substantially fixed supply voltage and a reference ground.