Patent ID: 9559655
Date: 2017-01-31
CPC Classifications: H03F,H03G,H04B

Claim:
1. An amplification circuit comprising: an amplifier having a gain and amplifying an input signal based on the gain, the input signal including a burst period in which the input signal transits between a low level and a high level repeatedly and an idle period in which the input signal remains unchanged at an intermediate level between the low level and the high level; and a gain control signal generator controlling the gain based on an amplitude of the input signal, wherein: the gain obtained when the amplitude of the input signal is less than a first amplitude value and when the amplitude of the input signal is greater than a second amplitude value is lower than the gain obtained when the amplitude of the input signal is between the first and second amplitude values or when the amplitude of the input signal is one of the first and second amplitude values, the first amplitude value is less than the amplitude of the input signal in the burst period, and the second amplitude value is greater than or equal to the first amplitude value.