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J Electromagn Eng Sci > Volume 16(3); 2016 > Article
Journal of Electromagnetic Engineering and Science 2016;16(3):191-193.
DOI: https://doi.org/10.5515/JKIEES.2016.16.3.191   
Study on Improving the Phase Noise of Broadband Voltage-Controlled Oscillator
Min-Ho Go, Hyoung-Joo Kim
AESA Radar Research Center, Hanwha Thales
Correspondence:  Min-Ho Go,Email: minho0423.go@hanwha.com
Abstract
This paper proposes a voltage-controlled oscillator (VCO) that has broadband turning and low-level of phase noise characteristics. Due to the micro-strip line resonant circuit with a low Q value, which is applied to the broadband tuning range, the depreciated phase noise performance is compensated by restraining the harmonics of the oscillating frequency. The VCO was designed according to the proposed structure as well as the conventional structure, and the superiority of the proposed structure was verified through its simulation, fabrication, and measurement.
Key words: Broadband, Harmonic Suppression, Phase Noise, VCO
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