发明名称 |
Direct conversion receiver and DC offset concellation method |
摘要 |
A direct conversion receiver and a DC offset cancellation method are provided. An RF module receives a transmission signal to generate an RF signal. A mixer converts the RF signal to a mixer output comprising baseband and imaginary parts. A filter module filters out the imaginary part of the mixer output and adjusts gain of the baseband part to generate a baseband signal. A calibrator performs a calibration to determine a mismatch value of the mixer. A static DC offset canceller provides a constant offset compensation according to the mismatch value; wherein the mismatch value is used to minimize component mismatching effects of the mixer. |
申请公布号 |
US8260227(B2) |
申请公布日期 |
2012.09.04 |
申请号 |
US20080136169 |
申请日期 |
2008.06.10 |
申请人 |
CHIU CHINQ-SHIUN;MEDIATEK INC. |
发明人 |
CHIU CHINQ-SHIUN |
分类号 |
H04B1/00;H04B1/10;H04B15/00 |
主分类号 |
H04B1/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|