| 摘要 |
PROBLEM TO BE SOLVED: To provide an amplifier circuit that reduces current consumption and power consumption. SOLUTION: The amplifier circuit consists of an input impedance matching section 11, a 1st amplifier 12, a band pass filter section 13, an impedance matching section 14, a 2nd amplifier section 15, an output impedance matching section 16, and a DC/AC separation section 17 or the like. The 1st amplifier section 12 is connected in cascade the 2nd amplifier section 15.
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