Telecommunications – Transmitter and receiver at separate stations – Plural transmitters or receivers
Reexamination Certificate
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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Greenberg Laurence A.
Harvey Dionne
Infineon - Technologies AG
Kuntz Curtis
Locher Ralph E.
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