Automotive multi-standard RF front-end for GSM, WCDMA and Mobile WiMAX

Abstract

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 to the various wireless channels and conceived as a reconfigurable smart radio aiming to provide full wireless connectivity in the framework of automotive communication environments. The RF front-end receiver features two CMOS switches and SAW filters for band selection and a shared LNA, I/Q-demodulators and analog baseband chain that meet the specifications spread spectrum (e.g. WCDMA) and OFDM(A) (e.g. WiMAX) systems as well as for the GSM narrow spectrum system with modulation scheme GMSK.