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:
Sep. 23, 2003
Filed:
Oct. 05, 2001
Peter J. Doherty, Apex, NC (US);
Ericsson Inc., Research Triangle Park, NC (US);
Abstract
The present invention relates to a method and apparatus for providing a radio frequency output to promote higher amplifier efficiencies. In one embodiment, the apparatus includes a driver and a switch that alternately connects first and second circuit paths to the driver and an antenna. A power amplifier having a first bias lead lies in the second circuit path. When low power is required, the switch connects the first circuit path to the antenna, and disconnects the first bias lead from a bias. When high power is required, the switch disconnects the first circuit path from the antenna, and connects the second circuit path and the first bias lead to the antenna and the bias, respectively.