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http://dx.doi.org/10.5515/KJKIEES.2010.21.6.627

Low Phase Noise VCO Using Complimentary Bifilar Archimedean Spiral Resonator(CBASR)  

Lee, Hun-Sung (Department of Computer and Radio Communications Engineering, Korea University)
Yoon, Won-Sang (Department of Computer and Radio Communications Engineering, Korea University)
Lee, Kyoung-Ju (Department of Computer and Radio Communications Engineering, Korea University)
Han, Sang-Min (Department of Information & Communication Engineering, Soonchunhyang University)
Pyo, Seong-Min (Department of Computer and Radio Communications Engineering, Korea University)
Kim, Young-Sik (Department of Computer and Radio Communications Engineering, Korea University)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.21, no.6, 2010 , pp. 627-634 More about this Journal
Abstract
In this paper, a novel voltage-controlled oscillator(VCO) using the complimentary bifilar archimedean spiral resonator(CBASR) is presented for reducing the phase noise characteristic. A CBASR has compact dimension, a sharp skirt characteristic in stopband, a low insertion loss in passband, and a large coupling coefficient value, which makes a high Q value and improve the phase noise of VCO. The proposed VCO has the oscillation frequency of 2.396~2.502 GHz in the tuning voltage of 0~5 V, the output power of 7.5 dBm and phase noise of -119.16~-120.2 dBc/㎐ at the offset frequency of 100 kHz in tuning range.
Keywords
VCO; Phase Noise; Complementary Sprial Resonator; Negative Resistance; Q-Factor;
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