A dual-band RF front-end for WCDMA and GPS applications
نویسندگان
چکیده
An RF front-end for dual-band dual-mode operation is presented. The front-end consumes 22.5 mW from a 1.8-V supply and is designed to be used in a direct-conversion WCDMA and GSM receiver. The front-end has been fabricated in a 0.35m BiCMOS process and, in both modes, can use the same devices in the signal path except the LNA input transistors. The front-end has a 27-dB gain control range, which is divided between the LNA and quadrature mixers. The measured double-sideband noise figure and voltage gain are 2.3 dB, 39.5 dB, for the GSM and 4.3 dB, 33 dB for the WCDMA, respectively. The linearity parameters IIP3 and IIP2 are 19 dBm, +35 dBm for the GSM and 14 5 dBm and +34 dBm for the WCDMA, respectively.
منابع مشابه
Direct Conversion RF Front-End Implementation for Ultra- Wideband (UWB) and GSM/WCDMA Dual-Band Applications in Silicon-Based Technologies
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