| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide such means that a band of any arbitrary frequency can be selected as an observation band and the selected one observation band can be sampled by one A/D conversion element regardless of a boundary of Nyquist frequencies of A/D conversion elements when accomplishing a receiving device of a direct conversion system in which a high frequency signal is band-divided and covered while being partially charged by a plurality of A/D conversion elements. <P>SOLUTION: A boundary of Nyquist frequencies which is generated when dividing and sampling a band through a plurality of A/D conversion elements is avoided by combining and using auxiliary A/D conversion elements which operate in different sampling frequencies, and any arbitrary one observation band is sampled by one A/D conversion element. <P>COPYRIGHT: (C)2013,JPO&INPIT |
