WIDE BAND POWER AMPLIFIER OF PUSH-PULL STRUCTURE

摘要

PURPOSE: A broadband power amplifier having a push-pull structure optimizes power matching at a baseband and high band by forming a capacitance tuning structure within a chip. CONSTITUTION: A power amplification part(110) amplifies the power of an input signal by using a push-pull structure. An inductor circuit part(130) is connected to a line between the output terminal of the power amplification part and the final output terminal. An output capacitor circuit part(140) is connected between the final output terminal and the ground. A variable capacity circuit part(150) is connected between the final output terminal and the ground. A variable capacity circuit part has a variable capacitance for power matching at a baseband and high band. A power amplification part and variable capacity circuit part are formed within one chip.