Samsung Electronics Co., Ltd.

Jae-Hong Chang

Hui-Jung Kim

Hyun-Won Mun

Seung-chan Heo

Byeong-Ha Park

Hyung-Ki Ahn

Seong-Han Ryu

Min-Kyu Je

Sang-Yeob Lee

Han-Gun Chung

Kwang-Seok Han

A mode-switching LNA generally includes an input unit, an output unit and a bias voltage generator. The input unit amplifies an input signal to generate an amplified signal. The output unit receives the amplified signal from the input unit and operates either in an oscillation mode or in an amplification mode in response to a control signal to generate an output signal having a center frequency equal to a target frequency. The control signal indicates whether the center frequency of the output signal is the same as the target frequency. The bias voltage generator provides an input bias voltage to the input unit in response to the control signal, where the input bias voltage includes a first bias voltage in the amplification mode and a second bias voltage in the oscillation mode.

Mode-switching low-noise amplifier and wide-band RF receiver

A gain controllable wide-band low noise amplifier includes a first transistor coupled to an input node and an output node and amplifying an input signal to generate an output signal, a second transistor allowing the output signal to feedback to the input node, and a control circuit complementarily controlling transconductance of the first and second transistors.

Gain controllable low noise amplifier and wireless communication receiver having the same

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Seongnam-si, South Korea

Jae-Hong Chang