| 摘要 |
<p>An amplifying circuit (10) having a bias voltage setting unit includes: a first amplifying element (11) that amplifies an input signal and outputs the amplified signal as an output signal; a bias voltage setting unit that generates a bias voltage from the output signal on the basis of a control signal, such as an AGC voltage; and a high impedance element (third resistor) by which the bias voltage is applied to an input portion of the first amplifying element (11) and which, when a component for bias voltage setting, such as a fourth resistor, is externally provided in the bias voltage setting unit, prevents a capacitive component of the component for bias voltage setting from being equivalently connected with respect to the input portion.
</p> |
