Patent ID: 9543914
Date: 2017-01-10
CPC Classifications: H01L,H03F,H04W

Claim:
1. An integrated Doherty amplifier structure comprising; a main amplifier stage; a first peak amplifier stage; an output combination bar configured to receive and combine an output from the main amplifier stage and an output from the first peak amplifier stage, wherein the main amplifier stage and the first peak amplifier stage are formed on a semiconductor die and the output combination bar comprises an output lead of a package in which the semiconductor die is mounted; a main connection configured to connect the output of the main amplifier stage to the output combination bar, the main connection comprising, at least in part, a bond wire forming a first inductance; a peak connection configured to connect the output of the first peak amplifier stage to the output combination bar; wherein the main connection connects to the output combination bar at a first point along the output combination bar, the peak connection connects to the output combination bar at a second point along the output combination bar spaced from the first point, the main amplifier stage is located further from the output combination bar than the first peak amplifier stage, and a physical and electrical length of the main connection is greater than a physical and electrical length of the peak connection.