The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 03, 2008
Filed:
Jan. 24, 2005
Thomas R. Apel, Portland, OR (US);
Paul E. Laferriere, Hillsboro, OR (US);
Thomas R. Apel, Portland, OR (US);
Paul E. Laferriere, Hillsboro, OR (US);
TriQuint Semiconductor, Inc., Hillsboro, OR (US);
Abstract
Described herein are representative embodiments of amplifiers having selectable power output while maintaining low power consumption. In certain exemplary embodiments, the amplifiers are operated as linear power amplifiers, such as may be used in wireless communication systems. According to one exemplary embodiment, a circuit is described comprising a control system configured to operate the circuit in at least a first mode and a second mode. The circuit of this embodiment further includes a first amplifier section configured to amplify at least a portion of an input signal and produce a first amplified signal on a first signal path in the first mode of operation, a second amplifier section configured to amplify at least a portion of an input signal and produce a second amplified signal on a second signal path in the second mode of operation, and an impedance inverter having an input coupled to the first and second signal paths.