Gain controllable low noise amplifier and wireless communication receiver having the same
AssigneeSamsung Electronics Co., Ltd.
InventorsJae-Hong Chang, Byeong-Ha Park, Sang-Yeob Lee, Seung-Chan Heo, Han-Gun Chung, Hyun-Won Mun, Min-Kyu Je, Seong-Han Ryu, Kwang-Seok Han
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Abstract
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.
Claims17
A gain controllable wide-band low noise amplifier comprising:
- a first transistor, coupled to an input node and an output node, 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.
A gain controllable wide-band low noise amplifier comprising:
- an amplification portion amplifying an input signal to generate an output signal;
- a feedback portion allowing the output signal to feedback to an input node;
- and
- a control circuit complementarily controlling the amount of current flowing through the amplification portion and the amount of current flowing through the feedback portion.
A wide-band wireless communication receiver comprising:
- a low noise amplifier amplifying an input signal;
- a mixer down-converting a frequency of an output signal of the low noise amplifier;
- an A/D converter converting an output signal of the mixer to a digital signal;
- and
- a digital signal processor restoring original data from the digital signal,
- wherein the low noise amplifier includes:
- an amplification portion amplifying an input signal to generate an output signal;
- a feedback portion allowing the output signal to feedback to an input node;
- and
- a control circuit complementarily controlling the magnitude of current flowing through the amplification portion and the magnitude of current flowing through the feedback portion.
Dependencies are inferred from the claim text.