| US 7,522,672 B2 | ||
| Digital branch calibrator for an RF transmitter | ||
| Aryan Saed, H51-1255 Riverside Drive, Port Coquitlam, BC V3B 7W5 (Canada) | ||
| Filed on Aug. 30, 2007, as Appl. No. 11/848,223. | ||
| Application 11/848223 is a continuation of application No. 10/627881, filed on Jul. 25, 2003, granted, now 7,280,612, filed on Oct. 09, 2007. | ||
| Prior Publication US 2007/0291863 A1, Dec. 20, 2007 | ||
| Int. Cl. H04K 1/10 (2006.01) | ||
| U.S. Cl. 375—260 [375/221; 375/222; 375/226; 375/228; 375/271; 375/295; 375/300; 375/302; 375/296; 375/232; 330/149; 330/151; 330/52; 330/124 R; 330/295; 330/136.2; 455/114.3; 455/163.1; 455/126] | 21 Claims |
| 1. A digital branch calibrator, comprising:
a closed loop controller to transmit a zero base band transmit signal and to receive a feedback signal correlated with a power
level of an output RF transmit signal;
a digital signal processor to control the closed loop controller for transmitting the zero base band transmit signal;
a complex accumulator to decimate the feedback signal; and
an adjusting component to iteratively adjust at least one of phase and gain of at least one phasor fragment signal in a transmit
path from a phasor fragmenter to generate at least one sequence of at least one of phase and gain update signals that minimize
the power level;
wherein the at least one sequence of at least one of phase and gain update signals is configured to update at least one of
phase and gain of data signals.
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