Title :
An FSK demodulator for Bluetooth applications having no external components
Author :
Main, Eric ; Coffing, Danielle
Author_Institution :
Motorola Inc., Tempe, AZ, USA
Abstract :
An injection-locked oscillator in combination with a phase detector is shown to make a very effective FSK demodulator for Bluetooth applications. The dynamic behavior allows automatic tuning from outside the locking range. Two tuning methods are described which eliminate the need for external components. A cancellation technique is used which minimizes filtering requirements. The demodulator was fabricated in a 0.4 μm BiCMOS technology
Keywords :
BiCMOS integrated circuits; circuit tuning; demodulators; frequency shift keying; injection locked oscillators; phase detectors; transceivers; 0.4 micron; BiCMOS technology; Bluetooth transceiver; FSK demodulator; automatic tuning; cancellation technique; injection-locked oscillator; phase detector; Bandwidth; Bluetooth; Capacitors; Demodulation; Detectors; Differential amplifiers; Frequency shift keying; Oscillators; Phase detection; Tuning;
Conference_Titel :
Circuits and Systems, 2001. MWSCAS 2001. Proceedings of the 44th IEEE 2001 Midwest Symposium on
Conference_Location :
Dayton, OH
Print_ISBN :
0-7803-7150-X
DOI :
10.1109/MWSCAS.2001.986336
