| 摘要 |
<P>PROBLEM TO BE SOLVED: To reduce power consumption of a receiver during standby of reception. Ž<P>SOLUTION: A receiver includes a low noise amplifier 2, a local signal generator 5, a first receiving mixer 8, a second receiving mixer 9, a first amplifier 12, a second amplifier 13, a first A/D converter 14, a second A/D converter 15, and a signal level detection unit 16. A detection signal at either the input or output of the first A/D converter 14 is supplied to the input of the signal level detection unit 16, and a reception start signal 21 is generated from the output thereof. Before an RF reception signal is received, a first signal processing unit 22 including 8, 12 and 14 is controlled to active state, and a second signal processing unit 23 including 9, 13 and 15 is controlled to low power consumption state. After an RF reception signal is received, the second signal processing unit 23 is controlled to the active state from the low power consumption state in response to the reception start signal 21 which is generated from the signal level detection unit 16. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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