| 摘要 |
A demodulator for a spread spectrum communication system, including a piezoelectric substrate for causing elastic surface waves, an input electrode provided on the surface of the piezoelectric substrate, an intermediate electrode provided on the piezoelectric substrate surface a predetermined distance away from the input electrode, so as to form a matched filter together with the input electrode, and an output electrode provided on the piezoelectric substrate surface at a predetermined distance away from the intermediate electrode, so as to form a delay path together with the intermediate electrode. |
