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RF/Microwave??

Qualcomm transceiver supports GSM, UMTS

Posted: 24 Dec 2002 ?? ?Print Version ?Bookmark and Share

Keywords:qualcomm? radioone? zero if? zif architecture? rtr6250?

Qualcomm Inc. has announced the availability of its radioOne RTR6250 transceiver/transmit IC, which supports dual-mode, quad-band GSM transceiver operations (GSM 850/900/1800/1900) and UMTS transmit operation for 1.9GHz and 2.1GHz.

"By adding GSM 850 and 1900MHz capabilities to the RTR6200 chip, it will help enable worldwide UMTS and GSM roaming," said Don Schrock, president of Qualcomm CDMA Technologies. The IC also features radioOne Zero IF architecture that eliminates the need for IF components - including IF chipsets, IF SAW filters, and IF VCOs.

The RTR6250 GSM receivers consist of LNAs, direct conversion mixers and filtering, while the GSM transmitters consist of an upconversion modulator and offset PLL. The RTR6250 UMTS transmitter includes the I/Q upconversion modulator, UHF PLLs, and a transmit VCO.

The chip is fabricated with a siGe BiCMOS process to permit high linearity and low power consumption. It is available in an 8-by-8mm bump chip carrier, 56-pin QFN package.





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