Wideband injection-locked divide-by-3 frequency divider design with regenerative second-harmonic feedback technique

Abstract

This paper presents an integration of wideband injection-locked divide-by-3 frequency divider with regenerative second-harmonic feedback technique. By using the proposed feedback technique, a divider with a wide input locking range over 10% can be achieved at Ka-band, which performs near the device maximum oscillation frequency (f<sub>MAX</sub>) in a CMOS 0.18- &#x03BC;m process. The divider can operate from 33.9 GHz to 37.7 GHz with an input injection power of 0 dBm. The measured input locking range is 3.8 GHz (10.6%). The chip area of the divider core is 0.22 mm<sup>2</sup>. The core power consumption is 11.9 mW at a supply voltage of 0.9 V. At an offset frequency of 200 KHz, the measured output phase noise under lock is -121 dBc/Hz as the input signal with phase noise of -111.5 dBc/Hz is applied. The difference of 9.5 dB in phase noise is close to the theoretical value predicted by the theorem of division-by-3.

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Cite this paper

@article{Tsai2012WidebandID, title={Wideband injection-locked divide-by-3 frequency divider design with regenerative second-harmonic feedback technique}, author={Pei-Kang Tsai and Chin-Chih Liu and Tzuen-Hsi Huang}, journal={2012 7th European Microwave Integrated Circuit Conference}, year={2012}, pages={293-296} }