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A 1-V CMOS RF front-end for IEEE 802.15.4-based wireless sensor networks in intelligent transportation system

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1 Author(s)
Soorapanth, T. ; Nat. Electron. & Comput. Technol. Center, Thailand

This paper describes a low-voltage, low-power CMOS RF front-end for wireless sensor networks (WSNs) implementation in the 2.45-GHz band based on IEEE 802.15.4 standard. The design targets a low-IF receiver architecture and consists of a low-noise amplifier and a quadrature mixer that downconverts an RF input at the 2.45-GHz band to an IF at 2 MHz. To promote low cost and low-voltage operation, all RF inductors are implemented on-chip and the LC-folded-cascode structure is employed for the mixer. By using a 0.18-¿m 6-Metal RF CMOS process, the simulated front-end achieves a noise figure of 8.6 dB, IIP3 of -21 dBm, S11 of -30 dB and the total conversion voltage gain of 41 dB. The power dissipation is at 2.2 mW for a 1-V supply.

Published in:

ITS Telecommunications, 2008. ITST 2008. 8th International Conference on

Date of Conference:

24-24 Oct. 2008

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