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Journal Article an 800‐MHz LC‐VCO with a Linear Control Characteristics in a 130‐nm CMOS Technology
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Authors
Hui Dong Lee, Jae Ho Jung, Kwang Chun Lee
Issue Date
2013-08
Citation
Microwave and Optical Technology Letters, v.55, no.8, pp.1972-1975
ISSN
0895-2477
Publisher
John Wiley & Sons
Language
English
Type
Journal Article
DOI
https://dx.doi.org/10.1002/mop.27723
Abstract
A semilinear LC-voltage-controlled oscillator (VCO) topology is proposed. To exploit a linear frequency tuning, the LC-VCO adopts the variable capacitance block of the varactor devices and the PMOS transistors. This block has the capacitance characteristics which are approximately inversely proportional to the square of the VCO control voltage. The proposed LC-VCO is implemented in a 130-nm CMOS technology. The measurement results show a semilinear frequency range of 503-873 MHz and a phase noise of -128 dBc/Hz at 1 MHz offset frequency. Power consumption is about 2 mA from a 1.2 V supply. Copyright © 2013 Wiley Periodicals, Inc.
KSP Keywords
CMOS Technology, Capacitance characteristics, Control characteristics, Frequency range, Frequency tuning, LC voltage controlled oscillator(LC-VCO), Power Consumption, VCO Control Voltage, Variable capacitance, linear control, measurement results