Ultra-low power consumption broadband low noise amplifier

The invention provides an ultra-low power consumption broadband low-noise amplifier which comprises a first resonant circuit, a low-frequency gain amplifier, a band-pass filter and a high-frequency gain amplifier. Signals are output to the input end of the band-pass filter after passing through the low-frequency gain amplifier, and the signals after low-frequency amplification are output to the high-frequency gain amplifier after being filtered by the band-pass filter. The first resonance circuit and the second resonance circuit are arranged, the resonance circuits can selectively increase or decrease signals with specific frequencies, and the characteristic can be used for restraining unexpected noise signals. And the gain is reduced in other frequency ranges, so that the unexpected noise interference is effectively reduced. And secondly, the resonant circuit can also provide gain, so that the output signal of the amplifier is stronger. In a low noise amplifier, this helps to maintain the strength of the sig