RFMD Introduces Transmit System for 3G Handsets
RF Micro Devices has announced a family of products, which combine to provide a UMTS transmit system for the implementation of multi-region multimode 3G handset platforms. The transmit system features a dedicated single-band power amplifier module (supporting Band I), a flexible dual-band power amplifier module (capable of supporting Bands I, II, III, IV, V, VI, VIII, IX) and a low-noise, high efficiency DC to DC converter/controller.
Konrad Alvarino, general manager of RFMD's components business unit, said, "Importantly, RFMD's UMTS transmit system provides our customers the flexibility to design a single platform that supports multiple UMTS regions by simply changing filter components. No change to the phone board's RF layout is necessary. When combined with the benefits of improved TRP and SAR and best-in-class efficiency, the transmit system delivers a compelling solution to customers seeking a cost-effective and highly efficient flexible UMTS platform."
Total radiated power (TRP) is the measurement of a mobile device's output power when that device transmits into non-optimal conditions, referred to as "antenna mismatch." Antenna mismatch can be caused by a number of factors, including a less efficient antenna or close handset proximity to metallic surfaces. Handsets transmitting in an antenna mismatch can operate below planned output power, resulting in dropped calls, or above planned output power, resulting in reduced talk time and poor call quality. RFMD actively supports TRP improvement requirements and has developed technologies for TRP performance improvements that improve network efficiency, network coverage and data throughput rates while reducing the frequency of dropped calls.
Industry research firm Gartner Dataquest forecasts the 3G multimode market will exceed 600 million handsets by 2010, reflecting a compound annual growth rate of over 45%. RFMD estimates that the number of UMTS frequency bands supported by the average 3G multimode device will approximately double by 2010. RFMD is the global leader in UMTS power amplifiers and has shipped more than 15 million UMTS power amplifiers with improved TRP characteristics.
The RF6280, RF6281 and RF6285 will be available for sampling in the third quarter of 2007."
Posted to the site on 27th February 2007