Invention Grant
US09100078B2 RF receiver and digitally-assisted calibration method applicable thereto
有权
RF接收机和适用于其的数字辅助校准方法
- Patent Title: RF receiver and digitally-assisted calibration method applicable thereto
- Patent Title (中): RF接收机和适用于其的数字辅助校准方法
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Application No.: US13798241Application Date: 2013-03-13
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Publication No.: US09100078B2Publication Date: 2015-08-04
- Inventor: Sheng-Hong Yan , Sheng-Hao Chen , Paul Cheng Po Liang , Jen-Che Tsai
- Applicant: MEDIATEK Inc.
- Applicant Address: TW Hsin-Chu
- Assignee: MEDIATEK INC.
- Current Assignee: MEDIATEK INC.
- Current Assignee Address: TW Hsin-Chu
- Agency: McClure, Qualey & Rodack, LLP
- Main IPC: H04B1/10
- IPC: H04B1/10 ; H04B17/11

Abstract:
A radio frequency (RF) receiver includes a digital tuning engine; I-path and Q-path analog filters, tuned by the digital tuning engine; and a digital compensation circuit. The digital tuning engine executes a RC (resistor-capacitor) time constant calibration to adjust respective cut-off frequencies of the I-path analog filter and the Q-path analog filter. The digital tuning engine executes a filter mismatch calibration to match the I-path analog filter and the Q-path analog filter. The digital tuning engine executes a filter residual mismatch calibration to match an I-path response from the I-path analog filter to the digital compensation circuit and a Q-path response from the Q-path analog filter to the digital compensation circuit.
Public/Granted literature
- US20130266102A1 RF RECEIVER AND DIGITALLY-ASSISTED CALIBRATION METHOD APPLICABLE THERETO Public/Granted day:2013-10-10
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