A Novel Oscillator Utilizing Corrugated CPW EBG Structure with Reduced Phase Noise and Improved Harmonic Characteristics

Corrugated CPW EBG 구조를 이용한 낮은 위상잡음과 향상된 고조파 특성을 갖는 새로운 형태의 발진기

  • 황철규 (한국과학기술원 전자전산학과) ;
  • 명로훈 (한국과학기술원 전자전산학과)
  • Published : 2005.11.05


This paper presents a new microwave oscillator incorporating a corrugated coplanar waveguide (CCPW) electromagnetic bandgap (EBG) structure as its terminating resonance component. The use of a compact CCPW EBG structure was effective in reducing the phase noise and improving the harmonic characteristics of the microwave oscillator circuit without additional backside processing and drastic size increment. The fully planar CCPW oscillator oscillating at the frequency of 5.41 GHz showed a phase noise characteristic of -90.7 dBc/Hz at 100kHz offset and a second harmonic suppression of 42.67 dB.