The invention belongs to the technical field of
millimeter wave communication, and discloses a low-
noise amplifier circuit for short-distance
wireless communication, which comprises an input matching network, a
transistor amplification network, an output matching network and a biasing circuit, the input end of the low-
noise amplifier circuit is connected with the input end of the input matching network and is used for inputting a
radio frequency signal; the input matching network is used for realizing 50-
ohm impedance matching between an input radio-frequency
signal and the
transistor amplification network, the output end of the input matching network is connected with the input end of the
transistor amplification network, the transistor amplification network is used for realizing amplification of the radio-frequency
signal, and the output end of the transistor amplification network is connected with the input end of the output matching network; the output matching network is used for achieving
output impedance matching, the output end of the output matching network is the output end of the low-
noise amplifier circuit, and the bias circuit is used for providing first bias
voltage and second bias
voltage for the transistor amplification network. According to the invention, the low-noise and high-
gain signal amplification function can be realized, the signal loss can be effectively reduced, and the available bandwidth can be expanded.