FREQUENCY MANAGEMENT IN A COMMUNICATIONS POSITIONI

专利名称：FREQUENCY MANAGEMENT IN A

COMMUNICATIONS POSITIONING DEVICE

发明人：TAWADROUS, Sameh, W.,DECK, Ronald,

H.,VOOR, Thomas, E.

申请号：EP037266.8申请日：20030515公开号：EP1508055A1公开日：20050223

摘要：A kind of frequency management scheme mixed communication/positioningdevices, such as cellular/GPS or other unit equipments, generate a part that local clockpulses (102) are used for communication equipment, use crystal oscillator or otherportions, oscillation output, which can be corrected, controls (AFC) circuit or software byautomatic frequency, to drive the frequency and high-precision of clock signal. Baseoscillator can drive high frequency clock for delivery to phaselocked loop (110), for thecommunications portion of honeycomb (120) or other mixing arrangements, these clocksignals can also drive GPS (124) or other location receivers with frequency conversion.Extract the section mixer part that base GPS clock does not need the second oscillator orsynthesizer from radio frequency reference. In embodiment, it is tuned at cellular clockAFC and can be omitted and be delivered to GPS or other location receivers with beingincluded in of separating of high frequency clock signal and can be adjusted, passthrough frequency prescaler or other modules.

申请人：Motorola, Inc.,A Corporation of the State of Delaware;

地址：1303 East Algonquin Road Schamburg, IL 60196 US

国籍：US

代理机构：McLeish, Nicholas Alistair Maxwell

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