| US 7,577,419 B2 | ||
| Digital mixer system and method | ||
| Jeffrey Donald Alderson, Austin, Tex. (US) | ||
| Assigned to Sigmatel, Inc., Austin, Tex. (US) | ||
| Filed on Dec. 19, 2006, as Appl. No. 11/641,994. | ||
| Prior Publication US 2008/0144740 A1, Jun. 19, 2008 | ||
| Int. Cl. H04B 1/10 (2006.01) | ||
| U.S. Cl. 455—324 [375/324] | 22 Claims |
| 1. A digital mixing method comprising:
receiving a first input signal modulated using a first modulation mode at an input of a Coordinate Rotation Digital Computer
(CORDIC) mixer;
outputting a first output signal generated by mixing the first input signal substantially to baseband using a first input
frequency received at the CORDIC mixer;
receiving a second input signal modulated using a second modulation mode at the input of the CORDIC mixer; and
outputting a second output signal generated by mixing the second input signal substantially to baseband using a second input
frequency received at the CORDIC mixer.
|