Mstar Semiconductor, Inc.

Si-Ning Zhou

Qiang Li

Chih-Ming Hung

Disclosed are low-noise amplifiers and SAW-less receivers. An exemplary amplifier includes at least two amplifier modules. The amplifier modules share a common output node and comprise a common input to which the amplifier modules are AC or DC coupled for receiving an inbound RF signal. The amplifier modules operate at different biases.

Low-noise amplifiers for RF receiver

The present disclosure relates to variable-gain low noise amplifiers and RF receivers. An exemplary method for processing a RF signal provides a low noise amplifier with main and auxiliary amplifier modules. When a selection indicates the low noise amplifier operating in a high-gain mode, the main and auxiliary amplifier modules are coupled in parallel. When the selection indicates the low noise amplifier operating in a low-gain mode, the main and auxiliary amplifier modules are cross coupled. When a selection indicates the low noise amplifier operating in a moderate-gain mode, the auxiliary amplifier modules are disconnected from the main amplifier module.

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Irvine, CA, United States of America

Si-Ning Zhou