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http://dx.doi.org/10.17661/jkiiect.2015.8.4.243

Design of the Microwave Oscillator with the C type DGS Resonator  

Kim, Gi-Rae (Department of Electronics Engineering, Silla University)
Publication Information
The Journal of Korea Institute of Information, Electronics, and Communication Technology / v.8, no.4, 2015 , pp. 243-248 More about this Journal
Abstract
Since phase noise is one of the most important parameters in the design of microwave oscillators, several methods have been proposed to reduce the phase noise. These methods have focused on improving the quality factor of resonators, which result in low phase noise oscillators. Dielectric resonators have been widely used for low phase noise in microwave oscillators due to their high quality factor. However this cannot be used in MMIC oscillators because they have a 3D structure. In this paper, to overcome this problem a novel resonator using open ring type DGS is proposed for improvement of phase noise characteristics that is weak point of oscillator using planar type microstrip line resonator, and oscillator for 5.8GHz band is designed using proposed DGS resonator. The open ring type DGS resonator is composed of DGS cell etched on ground plane under $50{\Omega}$ microstrip line. At the fundamental frequency of 5.8GHz, 6.1dBm output power and -82.7 dBc@100kHz phase noise have been measured for oscillator with ring type DGS resonator. The phase noise characteristics of oscillator is improved about 96.5dB compared to one using the general ${\lambda}/4$ microstrip resonator.
Keywords
Open Ring Resonator; RF Oscillator; MMIC; DGS; Phase noise;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
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