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A Low-Noise Delta-Sigma Phase Modulator for Polar Transmitters
Author
Source
Issue
Vol. 2014, Issue 2014 (31 Dec. 2014), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2014-02-25
Country of Publication
Egypt
No. of Pages
8
Main Subjects
Medicine
Information Technology and Computer Science
Abstract EN
A low-noise phase modulator, using finite-impulse-response (FIR) filtering embedded delta-sigma (ΔΣ) fractional-N phase-locked loop (PLL), is fabricated in 0.18 μm CMOS for GSM/EDGE polar transmitters.
A simplified digital compensation filter with inverse-FIR and -PLL features is proposed to trade off the transmitter noise and linearity.
Experimental results show that the presented architecture performs RF phase modulation well with 20 mW power dissipation from 1.6 V supply and achieves the root-mean-square (rms) and peak phase errors of 4° and 8.5°, respectively.
The measured and simulated phase noises of −104 dBc/Hz and −120 dBc/Hz at 400-kHz offset from 1.8-GHz carrier frequency are observed, respectively.
American Psychological Association (APA)
Zhou, Bo. 2014. A Low-Noise Delta-Sigma Phase Modulator for Polar Transmitters. The Scientific World Journal،Vol. 2014, no. 2014, pp.1-8.
https://search.emarefa.net/detail/BIM-1049955
Modern Language Association (MLA)
Zhou, Bo. A Low-Noise Delta-Sigma Phase Modulator for Polar Transmitters. The Scientific World Journal No. 2014 (2014), pp.1-8.
https://search.emarefa.net/detail/BIM-1049955
American Medical Association (AMA)
Zhou, Bo. A Low-Noise Delta-Sigma Phase Modulator for Polar Transmitters. The Scientific World Journal. 2014. Vol. 2014, no. 2014, pp.1-8.
https://search.emarefa.net/detail/BIM-1049955
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1049955