Invention Grant
- Patent Title: Image rejection scheme for receivers
- Patent Title (中): 接收机的图像抑制方案
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Application No.: US12273051Application Date: 2008-11-18
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Publication No.: US08175565B1Publication Date: 2012-05-08
- Inventor: Runsheng He
- Applicant: Runsheng He
- Applicant Address: BM Hamilton
- Assignee: Marvell International Ltd.
- Current Assignee: Marvell International Ltd.
- Current Assignee Address: BM Hamilton
- Main IPC: H04B1/16
- IPC: H04B1/16

Abstract:
An RF receiver image rejection scheme. The RF is received and mixed in two quadrature channels allowing separation of the undesired image portion within the RF signal from the desired portion. The two channels can be summed to allow the image portions to cancel out and form a signal which is predominantly based on the desired portion. Another sum of the two channels can also be made to provide a signal which is primarily based on the image portion. Since there are some components of the image portion even in the compensated desired signal, that signal indicative of the image portion is used to compensate for that undesired portion.
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