Novel Methods for Phase Noise Reduction and Harmonic Suppression in a Planar Oscillator Circuit Based on Planar Helical Resonators

Author

Hwang, Cheol Gyu ; Myung, Noh Hoon

Author_Institution

Dept. of Electr. Eng. & Comput. Sci., Korea Adv. Inst. of Sci. & Technol., Daejeon

fYear

2006

fDate

10-15 Sept. 2006

Firstpage

1438

Lastpage

1441

Abstract

This paper describes a compact printed helical resonator and its application to a microwave oscillator circuit implemented in CPW technology. The high Q-factor and spurious-free characteristic of the resonator contribute to the phase noise reduction and the harmonic suppression of the resulting oscillator circuit, respectively. The designed resonator showed a loaded Q of 180 in a chip area of only 40% of the corresponding miniaturized hairpin resonator without any spurious resonances. The fully planar oscillator incorporated with this resonator showed additional phase noise reduction of 10.5 dB at 1MHz offset and a second harmonic suppression enhancement of 6dB when compared to those of a conventional CPW oscillator without the PHR structure

Keywords

Q-factor; coplanar waveguide components; harmonics suppression; microwave oscillators; phase noise; resonators; CPW technology; Q-factor; compact printed helical resonator; harmonic suppression; microwave oscillator circuit; phase noise reduction; planar oscillator circuit; Coplanar waveguides; Dielectric substrates; Harmonics suppression; MMICs; Microwave circuits; Microwave oscillators; Microwave technology; Phase noise; Q factor; Resonance;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Conference, 2006. 36th European

Conference_Location

Manchester

Print_ISBN

2-9600551-6-0

Type

conf

DOI

10.1109/EUMC.2006.281309

Filename

4058107