Patent ID: 8559898

Claim:
Circuitry comprising: a radio frequency (RF) power amplifier (PA) amplifying transistor of an RF PA stage, such that the RF PA amplifying transistor comprises a first array of amplifying transistor elements and a second array of amplifying transistor elements; and an RF PA temperature compensating bias transistor of the RF PA stage wherein: the RF PA temperature compensating bias transistor is adapted to provide temperature compensation of bias of the RF PA amplifying transistor; the RF PA temperature compensating bias transistor is physically disposed between the first array of amplifying transistor elements and the second array of amplifying transistor elements in the RF PA amplifying transistor; the RF PA temperature compensating bias transistor is thermally coupled to the first array of amplifying transistor elements and the second array of amplifying transistor elements; and the RF PA stage is adapted to receive and amplify an RF stage input signal to provide an RF stage output signal using the RF PA amplifying transistor.