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

Claim 19:
20. A method for operating an amplifier according to at least a low gain-state and a high gain-state, the method comprising:
providing biasing voltages to 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 a stack of a plurality of series connected transistors 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, and
wherein the biasing voltages are provided to gates of the plurality of series connected transistors,
wherein the providing of the biasing voltages comprises selective generation of the biasing voltages based on an input control signal that is one of: a) a digital signal, b) an analog signal, and c) a combination of a) and b), and
wherein the method further comprises:
decoding of the input control signal into a target gain-state comprising the low gain-state or the high gain-state; and
generating the 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.