Apparatus and method for tuning an inter-stage matching network of an integrated multistage amplifier

摘要

A tuning circuit for compensating an inter-stage matching network included in an integrated multistage radio frequency (RF) amplifier includes one or more capacitors connected in shunt between ground and a voltage supply to the amplifier. The capacitors have values selected to effectively compensate the inductance from a pull-up inductor included in the inter-stage matching network to provide improved inter-stage matching when inductance and capacitance values of the inter-stage matching network deviate from their desired values due to parasitics and/or when other components, such as input-stage and output-stage transistors of the amplifiers deviate from their pre-fabrication simulation models.