Patent ID: 8054913

Claim:
A receiver comprising: a low noise amplifier that amplifies an impulse signal discretely transmitted; a demodulator connected to an output of the low noise amplifier; a low-pass filter connected to an output of the demodulator; an analog-to-digital converter that converts an analog baseband signal extracted from an output of the low-pass filter into a digital baseband signal; and an operation-timing control unit connected to the low noise amplifier, the demodulator, the low-pass filter, and the analog-to-digital converter, wherein the low-pass filter is constituted by an active filter including active amplifiers adapted to have a predetermined frequency characteristic to transmit the analog baseband signal of the output of the demodulator and to suppress an interfering signal having a frequency higher than that of the analog baseband signal, and wherein, in response to the reception of the impulse signal in a reception period of the impulse signal, the operation-timing control unit executes intermittent operation control for controlling the low noise amplifier, the demodulator, the low-pass filter, and the analog-to-digital converter to be in an operation state in the reception period of the impulse signal and, in a non-reception period of the impulse signal, for controlling the low noise amplifier, the demodulator, the low-pass filter, and the analog-to-digital converter to be in a non-operation state.