| 摘要 |
<p>PROBLEM TO BE SOLVED: To eliminate the need for a circuit to eliminate a phase difference between a carrier of an input signal and a local oscillation signal and to realize low power consumption. SOLUTION: N-points of one wave of a carrier in an input signal are sampled, fetched and transferred through a plurality of stages of analog shift registers 12. Part of the sampling signal is extracted for each N/2 stage of the analog shift registers 12, multiplied with a prescribed coefficient and all the products are summed. Two units of the analog shift register 12 or over are provided consecutively in the unit of consecutive 'N×spread code length×M (M is a carrier center frequency÷chip rate)' stages and the transfer clock is selectively supplied to one unit or two consecutive units or over.</p> |
