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The spectrum allocated for the operation of cellular services is country dependent and fragmented in several frequency bands. Mobile phones, to be usable globally, are therefore required to support many bands. The lack of suitable tuneable pre-selection filters and duplexers mandates the use of a large number of low-noise amplifiers (LNAs) in the receiver section of the transceiver. Minimization of...
The vastly growing amount of RF wireless communications standards and respective frequencies will demand the availability of multi-standard transceivers. A multi-frequency RF Front-end receiver supporting EGSM, WCDMA and Mobile WiMAX standards in the range from 935 MHz to 2.69 GHz is presented in this document. The multi-standard architecture aims for maximum hardware sharing and design reuse, adaptable...
This paper describes the design and performance of a 90 nm CMOS SAW-less receiver with DigRF interface that supports 10 WCDMA bands (I, II, III, IV, V, VI, VIII, IX, X, XI) and 4 GSM bands (GSM850, EGSM900, DCS1800, PCS1900). The receiver is part of a single-chip SAW-less transceiver reference platform IC for mass-market smartphones, which has been designed to meet Category 10 HSDPA (High Speed Downlink...
The following topics are dealt with: cellular integrated circuits; frequency generation; ultrawideband low noise amplifiers; radiofrequency integrated circuit technology; wireless local area network; multiple input multiple output; voltage controlled oscillators; dividers; wireless local area network power amplifiers; phase locked loops; synthesizers; silicon-based millimeter-wave front ends; passive...
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