Frequency generating system for a mobile radio dual-band...

Details Frequency generating system for a mobile radio dual-band... Frequency generating system for a mobile radio dual-band...

2006-01-31

2006-01-31

Kuntz, Curtis (Department: 2643)

Telecommunications

Transmitter and receiver at separate stations

Plural transmitters or receivers

C455S517000, C455S075000, C455S103000, C455S191300

Reexamination Certificate

active

06993356

ABSTRACT:
In a frequency generating system, a triple/single local-oscillator concept for receiving and transmitting in the lower frequency band, transmitting in the upper frequency band, and receiving in the upper frequency band is used for a dual-band transceiver so that a single band-switched VCO can be used as local oscillator for setting the frequency in all four possible operating cases. The system can be used, for example, in highly integrated dual-band mobile parts for GSM 900/1800 mobile radio.

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