| 摘要 |
PROBLEM TO BE SOLVED: To provide an AGC circuit capable of correcting temperature characteristics of a circuit gain by suppressing deterioration in NF of the circuit as a whole. SOLUTION: The AGC circuit includes a plurality of AGC amplifiers 12, 15 connected in series. The AGC circuit includes a storage section 3 for storing a temperature correction table to which a gain correction value for each temperature is related so that the gain of the pre-stage AGC amplifier 12 becomes higher than that of the post-stage AGC amplifier 15, corresponding to each of the plurality of AGC amplifiers 12, 15; and a control section 4 for controlling the gain of the plurality of AGC amplifiers 12, 15 by using the temperature correction table stored in the storage section 3. COPYRIGHT: (C)2011,JPO&INPIT
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