| US 7,492,223 B2 | ||
| Method and system for a highly efficient power amplifier utilizing dynamic biasing and predistortion | ||
| Arya Behzad, Poway, Calif. (US); Ali Afsahi, San Diego, Calif. (US); and Vikram Magoon, San Diego, Calif. (US) | ||
| Assigned to Broadcom Corporation, Irvine, Calif. (US) | ||
| Filed on Dec. 31, 2006, as Appl. No. 11/618,877. | ||
| Claims priority of provisional application 60/868818, filed on Dec. 06, 2006. | ||
| Prior Publication US 2008/0136526 A1, Jun. 12, 2008 | ||
| Int. Cl. H03G 3/20 (2006.01) | ||
| U.S. Cl. 330—136 [330/261; 330/149] | 30 Claims |
| 16. A system for biasing of a power amplifier circuit, the system comprising:
at least one circuit that enables computation of a value of a variable bias current component of a bias current based on a
selected bias slope value and an amplitude of an envelope input signal;
said at least one circuit enables computation of a value of said bias current based on a selected value of a constant bias
current component of said bias current and said value of said variable bias current component; and
said at least one circuit enables generation of an output signal by amplifying, utilizing said bias current having said computed
value, an amplifier input signal, wherein said bias current is generated based on said envelope input signal.
|