Integrated FSK demodulator with very high sensitivity

Author

Gustat, Hans ; Herzel, Frank

Author_Institution

Circuit Design Dept., IHP, Frankfurt Oder, Germany

Volume

38

Issue

2

fYear

2003

fDate

2/1/2003 12:00:00 AM

Firstpage

357

Lastpage

360

Abstract

This paper presents a fully integrated highly sensitive frequency-shift keying (FSK) demodulator functioning at a modulation factor of 0.5%-0.1% and below. A dual-feedback phase-locked loop approach provides both very high sensitivity and sufficiently large tuning range. Experimental results in TSMC 0.25-μm CMOS technology demonstrate that Gaussian FSK signals of a modulation factor down to 0.06% can safely be demodulated.

Keywords

Bluetooth; CMOS integrated circuits; circuit feedback; circuit tuning; demodulators; frequency shift keying; phase locked loops; radio receivers; sensitivity; 0.25 micron; Gaussian FSK signals; PLL demodulator; TSMC CMOS technology; dual-feedback PLL approach; dual-feedback phase-locked loop; frequency-shift keying demodulator; highly sensitive demodulator; integrated FSK demodulator; low-IF Bluetooth receivers; modulation factor; phase noise; tuning range; Bluetooth; Circuit optimization; Demodulation; Frequency modulation; Frequency shift keying; Phase locked loops; Phase modulation; Phase noise; Tuning; Voltage-controlled oscillators;

fLanguage

English

Journal_Title

Solid-State Circuits, IEEE Journal of

Publisher

ieee

ISSN

0018-9200

Type

jour

DOI

10.1109/JSSC.2002.807169

Filename

1175519