The invention provides a four-frequency-band reconfigurable balanced low-
noise amplifier structure and a regulation and control method thereof. The structure is based on a
balanced amplifier structure, a reconfigurable low-
noise amplifier constructs a four-frequency-band reconfigurable balanced low-
noise amplifier, and configuration of
four frequency bands is achieved by switching a
capacitor array in a reconfigurable low-noise amplifier matching structure; meanwhile, a configurable matching network with a wave
trapping function is provided, so that a high-selection function of each
frequency band is realized; the invention also provides a regulation and control method of the four-frequency-band reconfigurable balanced low-noise amplifier, which is convenient for effective implementation of the four-frequency-band reconfigurable balanced low-noise amplifier. According to the invention, the problems of high cost, large
power consumption and the like, poor reconfigurable
standing wave and large area of a
single chip caused by the use of a plurality of different-frequency-band low-noise amplifiers or
broadband low-noise amplifiers in a multi-frequency-band electronic
system are solved, and the power-resistant characteristic and reliability of circuit work are improved; in addition, the
circuit architecture is beneficial to the construction of a reconfigurable electronic
system meeting the requirements of
low noise and high power resistance, and can widely meet various application requirements of mobile communication,
satellite communication and the like.