A 15-mw fully integrated I/Q synthesizer for bluetooth in 0.18-μm CMOS

A low-power fully integrated synthesizer for Bluetooth applications is presented. The circuit with quadrature output signals at 2.45 GHz and 15-mW power dissipation has been designed in a digital 0.18- mu m CMOS process with 1.8-V supply voltage. The only external component is a 64-MHz crystal. Meas...

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Bibliographic Details
Published in:IEEE journal of solid-state circuits 2003-07, Vol.38 (7), p.1155-1162
Main Authors: Leenaerts, D.M.W., Vaucher, C.S., Bergveld, H.J., Thompson, M., Moore, K.
Format: Article
Language:English
Subjects:
Bluetooth
Circuits
CMOS
Digital
Frequency modulation
Synthesizers
Tuning
Voltage
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Summary:A low-power fully integrated synthesizer for Bluetooth applications is presented. The circuit with quadrature output signals at 2.45 GHz and 15-mW power dissipation has been designed in a digital 0.18- mu m CMOS process with 1.8-V supply voltage. The only external component is a 64-MHz crystal. Measurements have been performed on packaged samples mounted on an FR-4 board and show that the Bluetooth requirements are met. The measured phase noise is below -120 dBc/Hz at 3-MHz offset, and the resulting residual frequency modulation is 7.4-kHz rms. The tuning range consists of an analog and digital tuning mechanism, resulting in more than 15% overall tuning range.
ISSN:0018-9200
DOI:10.1109/JSSC.2003.813242