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A 2.4GHz hybrid PPF based BFSK receiver with ±180ppm frequency offset tolerance for wireless sensor networks

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3 Author(s)
Ronghua Ni ; School of EECS, Oregon State University, Corvallis 97331, USA ; Kartikeya Mayaram ; Terri S. Fiez

A low-power 2.4GHz 1Mb/s hybrid polyphase filter (PPF) based BFSK receiver with ±180ppm frequency offset tolerance (FOT) and 40dB adjacent channel rejection (ACR) at a modulation index (MI) of 2 is presented. High FOT at low MI is achieved by a frequency-to-energy conversion architecture using PPFs without any frequency correction. The proposed hybrid topology of the PPF provides an improved ACR at reduced power. The prototype receiver fabricated in a 0.13μm CMOS process, including RF and analog front-ends, consumes 1.95mW from a 1V supply with -84dBm sensitivity.

Published in:

2012 Symposium on VLSI Circuits (VLSIC)

Date of Conference:

13-15 June 2012