Patent ID: 7869548

Claim:
An ultra-wideband receiver which receives discontinuous pulse signals without a carrier wave and demodulates them, comprising: an amplifier which amplifies the received signals comprising the discontinuous pulse signals without a carrier wave; a demodulator which demodulates the signals amplified by said amplifier; and a controller which controls said amplifier based on the signals demodulated by said demodulator; wherein said controller outputs a timing signal having pulse signals generated so as to have a data from the signal demodulated by said demodulator and generates a control signal based on the timing signal during a predetermined period, and said amplifier amplifies the received signals only when the control signal is received, and said controller deactivates said amplifier while the control signal is not received; and wherein said demodulator includes a mixer made of an analog circuit and an analog-to-digital converter, and said demodulator demodulates the received signals by generating a plurality of single pulses, multiplies the signals amplified by said amplifier with each of the plurality of single pulses by the mixer, integrates the multiplied signals and converts the integrated signals to digital values by the analog-to-digital converter.