Invention Grant
US07881681B2 Self-calibrating direct conversion transmitter with converting/steering device
有权
具有转换/转向装置的自校准直接转换变送器
- Patent Title: Self-calibrating direct conversion transmitter with converting/steering device
- Patent Title (中): 具有转换/转向装置的自校准直接转换变送器
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Application No.: US11467831Application Date: 2006-08-28
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Publication No.: US07881681B2Publication Date: 2011-02-01
- Inventor: Bing-jye Kuo , Chinq-shiun Chiu
- Applicant: Bing-jye Kuo , Chinq-shiun Chiu
- Applicant Address: TW Hsin-Chu
- Assignee: MEDIATEK Inc.
- Current Assignee: MEDIATEK Inc.
- Current Assignee Address: TW Hsin-Chu
- Main IPC: H04B17/00
- IPC: H04B17/00 ; H04B1/26
Abstract:
A converting/steering device has a normal mode and a calibration mode. The converting/steering device includes a merged mixer/VGA and a mode controller. The merged mixer/VGA has a mixing stage and an amplifying stage. In the normal mode, the mode controller deactivates the mixing stage of the merged mixer/VGA, and the device operates as an RF VGA. In the calibration mode, the mode controller activates the mixing stage of the merged mixer/VGA and passes a local oscillator signal to the mixing stage, so that the device operates as a down-mixer.
Public/Granted literature
- US20080064344A1 SELF-CALIBRATING DIRECT CONVERSION TRANSMITTER WITH CONVERTING/STEERING DEVICE Public/Granted day:2008-03-13
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