Title :
A 2.4GHz hybrid PPF based BFSK receiver with ±180ppm frequency offset tolerance for wireless sensor networks
Author :
Ni, Ronghua ; Mayaram, Kartikeya ; Fiez, Terri S.
Author_Institution :
Sch. of EECS, Oregon State Univ., Corvallis, OR, USA
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.
Keywords :
CMOS integrated circuits; UHF filters; UHF integrated circuits; frequency shift keying; radio receivers; wireless sensor networks; ACR; CMOS process; MI; PPF hybrid topology; RF front-ends; adjacent channel rejection; analog front-ends; frequency 2.4 GHz; frequency correction; frequency offset tolerance; frequency-to-energy conversion architecture; hybrid PPF based BFSK receiver; low-power hybrid PPF; low-power hybrid polyphase filter; modulation index; power 1.95 mW; size 0.13 mum; voltage 1 V; wireless sensor networks; Frequency conversion; Frequency measurement; Frequency modulation; Radio frequency; Receivers; Sensitivity; Wireless sensor networks;
Conference_Titel :
VLSI Circuits (VLSIC), 2012 Symposium on
Conference_Location :
Honolulu, HI
Print_ISBN :
978-1-4673-0848-9
Electronic_ISBN :
978-1-4673-0845-8
DOI :
10.1109/VLSIC.2012.6243779
