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IEICE TRANSACTIONS on Electronics

A Constant-Current-Controlled Class-C Voltage-Controlled Oscillator using Self-Adjusting Replica Bias Circuit

Teerachot SIRIBURANON, Wei DENG, Kenichi OKADA, Akira MATSUZAWA

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Summary :

This paper presents a constant-current-controlled class-C VCO using a self-adjusting replica bias circuit. The proposed class-C VCO is more suitable in real-life applications as it can maintain constant current which is more robust in phase noise performance over variation of gate bias of cross-coupled pair comparing to a traditional approach without amplitude modulation issue. The proposed VCO is implemented in 180 nm CMOS process. It achieves a tuning range of 4.8–4.9 GHz with a phase noise of -121 dBc/Hz at 1 MHz offset. The power consumption of the core oscillators is 4.8 mW and an FoM of -189 dBc/Hz is achieved.

Publication
IEICE TRANSACTIONS on Electronics Vol.E98-C No.6 pp.471-479
Publication Date
2015/06/01
Publicized
Online ISSN
1745-1353
DOI
10.1587/transele.E98.C.471
Type of Manuscript
Special Section PAPER (Special Section on Analog Circuits and Related SoC Integration Technologies)
Category

Authors

Teerachot SIRIBURANON
  Tokyo Institute of Technology
Wei DENG
  Tokyo Institute of Technology
Kenichi OKADA
  Tokyo Institute of Technology
Akira MATSUZAWA
  Tokyo Institute of Technology

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