Invention Grant
- Patent Title: Apparatus for receiving multiple independent RF signals simultaneously and method thereof
- Patent Title (中): 用于同时接收多个独立RF信号的装置及其方法
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Application No.: US12951235Application Date: 2010-11-22
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Publication No.: US08320858B2Publication Date: 2012-11-27
- Inventor: Charles R. Ruelke , Ariel L. Galan , Yadunandana N. Rao
- Applicant: Charles R. Ruelke , Ariel L. Galan , Yadunandana N. Rao
- Applicant Address: US IL Schaumburg
- Assignee: Motorola Solutions, Inc.
- Current Assignee: Motorola Solutions, Inc.
- Current Assignee Address: US IL Schaumburg
- Agent Anthony P. Curtis; Daniel R. Bestor
- Main IPC: H04B1/04
- IPC: H04B1/04

Abstract:
An apparatus and method for receiving and processing multiple independent, uncorrelated RF signals is presented. The apparatus includes a Hybrid-Direct Conversion Receiver incorporating front end branches, protocol-specific digital processing branches, an interference detector, a correlator, and an offset control for controlling oscillator sources. The front end branches each contain a preselector that filters received signals and a mixer that down converts the received signal to an IF offset from a reference frequency by a unique offset. The bandwidth of an IF processor is partitioned into sub-channels corresponding to the different offsets and is wider than the combination of the sub-channels. The interference detector and correlator determine whether a particular desired signal is degraded by interference signals and select a new sub-channel. This information is provided to the offset control, which adjusts a LO source coupled to the corresponding down mixer accordingly.
Public/Granted literature
- US20120129480A1 APPARATUS FOR RECEIVING MULTIPLE INDEPENDENT RF SIGNALS SIMULTANEOUSLY AND METHOD THEREOF Public/Granted day:2012-05-24
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