| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a signal processor that converts a broadband reception signal into an intermediate signal so as to attain processing such as analog/ digital conversion. SOLUTION: A processing object signal is a signal with any of frequencies F1, F2, F3, to Fn. A local signal is a set of signals with frequencies f1', f2', f3', to fn'. An analog/digital converter can apply analog/digital conversion to the signal with the frequency f1. The difference between the frequency (e.g. F3) of the processing object signal and any frequency (e.g. f3') of the local signals is f1. Thus, even when the band of the prescribed object signal extends over a broadband, the processing object signal is mixed with the local signal to obtain an intermediate frequency signal(IF signal) to allow the analog/digital converter to be capable of analog/digital conversion.</p> |
