AGC CIRCUIT AND RADIO DEVICE INCLUDING THE SAME, AND METHOD OF CONTROLLING THE AGC CIRCUIT

摘要

PPROBLEM 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. PSOLUTION: 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. PCOPYRIGHT: (C)2011,JPO&INPIT