Patent ID: 8130040

Claim:
A power amplifier comprising: A. an RF INP input lead and an RF INN input lead; B. a first transistor having a first terminal coupled to the RF INN input lead, a second terminal connected to circuit ground, and a third terminal; C. a second transistor having a first terminal coupled to the RF INP input lead, a second terminal connected to circuit ground, and a third terminal; D. a first trace having opposed ends with an end contact at each end and a middle contact midway between the ends, one end contact being connected with the third terminal of the first transistor, the other end contact being connected with the third terminal of the second transistor, and the middle contact being connected with a circuit supply voltage; E. a second trace having opposed ends with an end contact at each end, one end contact of the second trace being connected to circuit ground, a first portion of the second trace being arranged with a portion of the first trace between the one end contact and the middle contact to form a first transformer, a second portion of the second trace being arranged with a portion of the first trace between the other end contact and the middle contact to form a second transformer; and F. an RF output lead coupled to the other end contact of the second trace.