发明授权
- 专利标题： I/Q calibration
- 专利标题（中）： I / Q校准
-
申请号： US10943055申请日： 2004-09-16
-
公开(公告)号： US07181205B1公开(公告)日： 2007-02-20
- 发明人: Baker Scott , David Reed , Robert Grant Irvine , Feng Wang
- 申请人： Baker Scott , David Reed , Robert Grant Irvine , Feng Wang
- 申请人地址： US NC Greensboro
- 专利权人： RF Micro Devices, Inc.
- 当前专利权人： RF Micro Devices, Inc.
- 当前专利权人地址： US NC Greensboro
- 代理机构： Withrow & Terranova, PLLC
- 主分类号： H04Q7/20
- IPC分类号： H04Q7/20
摘要：
The amplitude and phase errors of the modulation and demodulation in a transceiver are corrected by a self-calibration procedure in which a test signal is applied to the baseband input of the transmitter, and the output of the modulator is looped back to the input of the demodulator. The amplitude and phase errors of the resulting signal at the baseband output of the receiver are detected, and the contributions of the transmitter and receiver to the errors are separated and resolved into amplitude and phase components. Adjustments are then made to the amplitude and phase balance in the transmit and receive signal paths to correct the errors.
信息查询
