Patent Number: 7,612,684

Title: Dual mode RF power amplifier

Abstract: Briefly, in accordance with one or more embodiments, a dual mode power amplifier is capable of operating in either linear mode such as class A operation, or a non-linear mode such as class F operation. The power amplifier may be utilized in an RFID interrogator. The power amplifier may be biased to operate in a linear mode if the power amplifier is operating in a higher linearity mode, or may be biased to operate in a non-linear mode if the power amplifier is operating in a higher efficiency, lower power mode. The power amplifier may comprise two or more amplifiers coupled in parallel. A current mirror circuit may turn on more amplifiers if the power amplifier is operating in a higher power mode, and may turn on fewer amplifiers if the power amplifier is operating a lower power mode.

Inventors: Kipnis; Issy (Berkeley, CA), Bjork; Daniel (Sollentuna, SE), Rapp; Jan (Hasselby, SE)

Assignee: Intel Corporation

International Classification: G08B 23/00 (20060101)

Expiration Date: 1/03/02017