Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/104847
Title: Design and analysis of a 2.4 GHz hybrid type automatic amplitude control VCO with forward noise reduction
Authors: Zhang, Y. X
Yeo, K. S.
Boon, C. C.
Keywords: DRNTU::Engineering::Electrical and electronic engineering::Computer hardware, software and systems
Issue Date: 2014
Source: Zhang, Y. X., Boon, C. C., & Yeo, K. S. (2014). Design and analysis of a 2.4 GHz hybrid type automatic amplitude control VCO with forward noise reduction. Journal of Circuits, Systems and Computers, 23(04), 1450048-.
Series/Report no.: Journal of circuits, systems and computers
Abstract: This paper presents a voltage-controlled oscillator (VCO) with automatic amplitude control (AAC) loop. The proposed AAC VCO employs a hybrid type AAC loop and targets the Industrial, Scientific and Medical (ISM) band applications. The proposed AAC loop can also prevent the AAC from generating extra noise to the VCO and avoid stability problem which is common for conventional AAC loop. Detail transient analysis of this AAC VCO is derived. Based on this analysis, design steps applicable for such type of AAC loop is obtained. Measurement result shows the peak amplitude variation over the operation range of 2.25-2.54 GHz is less than 9 mV (without the AAC loop, amplitude variation can be as large as 40 mV, or 22.2% for 180 mV amplitude). Power consumption of the proposed AAC VCO is 4.5 mW while the power consumed by the loop is 0.8 mW and phase noise is -105 dBc/Hz at 100 kHz offset frequency. Worst case settling time is less than 10.5 μs
URI: https://hdl.handle.net/10356/104847
http://hdl.handle.net/10220/20364
ISSN: 0218-1266
DOI: 10.1142/S0218126614500480
Schools: School of Electrical and Electronic Engineering 
Rights: © 2014 World Scientific Publishing Company. This is the author created version of a work that has been peer reviewed and accepted for publication by Journal of Circuits, Systems and Computers, World Scientific Publishing Company. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: [DOI: http://dx.doi.org/10.1142/S0218126614500480].
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:EEE Journal Articles

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