Quorum Systems, a start-up based in San Diego, unveiled an ultra-low-power, multi-band, multi-mode radio frequency (RF) transceiver. The new “Sereno” QS3200 adds TD-SCDMA support to the company’s already existing 2G/2.5G/3G RF transceiver family. The chip is built on a single-die and integrates TD-SCDMA + GSM/GPRS/EDGE capabilities.
Quorum’s QS3200 simultaneously supports dual-band (1900MHz and 2000MHz) TD- SCDMA/HSPDA Category 10 and Quad-band (USGSM850, GSM900, DCS1800, PCS1900) GSM/GPRS/EDGE. Compared with solutions in the market today, Quorum said its device removes as many as four chips from the radio bill-of-materials (BOM), without the need for costly modules.
Quorum is currently working with baseband partners and expects platform reference designs utilizing the QS3200 to be available in mid-2008.
http://www.quorumsystems.comTime division-synchronous code division multiple access (TD-SCDMA) is a 3G mobile telecommunications standard specific to the People’s Republic of China. TD-SCDMA is based on spread spectrum technology and uses the time division duplex (TDD) mode, which transmits uplink and downlink traffic in the same frame in different timeslots.
