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

descriptionPublicationkeyboard_double_arrow_right Article , Conference object 01 Jun 2012Publisher:IEEEJournal:2012 Symposium on VLSI Circuits (VLSIC)

Authors: Ronghua Ni; Kartikeya Mayaram; Terri S. Fiez;

doi: 10.1109/vlsic.2012.6243779

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

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Abstract

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.

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Oregon State University
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