Apparatus and methods for power amplifiers

摘要

Apparatus and methods for power amplifiers are disclosed. In one embodiment, a power amplifier circuit assembly includes a power amplifier and an impedance matching network. The impedance matching network is operatively associated with the power amplifier and is configured to provide a load line impedance to the power amplifier between about 6Ω and about 10Ω. The impedance matching network includes a fundamental matching circuit and one or more termination circuits, and the fundamental matching circuit and each of the of the one or more termination circuits include separate input terminals for coupling to an output of the power amplifier so as to allow the fundamental matching circuit and each of the one or more termination circuits to be separately tuned.

主权项

1. An apparatus comprising:
a substrate; a power amplifier die on the substrate, the power amplifier die including a power amplifier configured to receive a radio frequency signal having a fundamental frequency and to provide an amplified radio frequency signal at an output; and an impedance matching network on the substrate and electrically connected to the output of the power amplifier, the impedance matching network configured to provide a load line impedance between about 6Ω and about 10Ω at the fundamental frequency, the impedance matching network including a fundamental matching circuit and a harmonic termination circuit, the fundamental matching circuit and the termination circuit having separate electrical connections to the power amplifier die.