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SiGe V band wide tuning-range VCO and frequency divider for phase locked loop

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3 Author(s)
Jian Zhang ; The Institute of Electronics, Communications and Information Technology (ECIT), Queen's University of Belfast, United Kingdom ; Guochi Huang ; Vincent Fusco

A V-band wide tuning-range VCO and high frequency divide-by-8 frequency divider using Infineon 0.35 μm SiGe HBT process are presented in this paper. An LC impedance peaking technique is introduced in the Miller divider to increase the sensitivity and operation frequency range of the frequency divider. Two static frequency dividers implemented using current mode logic are used to realize dividing by 4 in the circuit. The wide tuning range VCO operates from 51.9 to 64.1 GHz i.e. 20.3% frequency tuning range. The measured phase noise at the frequency divider output stage is around -98.5 dBc at 1 MHz. The circuit consumes 200mW and operates from a 3.5Vdc supply, and occupies 0.6×0.8 mm2 die area.

Published in:

Integrated Nonlinear Microwave and Millimetre-Wave Circuits (INMMIC), 2012 Workshop on

Date of Conference:

3-4 Sept. 2012