| 摘要 |
PROBLEM TO BE SOLVED: To provide a GPS-receiving circuit, an integrated circuit for GPS reception, and a GPS-1receiving device, can achieve highly accurate positioning in a short time corresponding to an external environment without using a cellular phone network, and without exerting an influence on demodulation of a BB signal processing circuit, even when an interfering signal near a band is strong. SOLUTION: In this GPS receiving circuit equipped with a down-converter for receiving a GPS signal and changing it into a low-pass signal, and an analog filter can change a band width, the band width of a filter is properly controlled, corresponding to the external environment, based on demodulated signal information of the BB signal processing circuit. COPYRIGHT: (C)2009,JPO&INPIT
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