Very low phase noise voltage controlled oscillator using high-Q double H-shape metamaterial resonator

In this paper, a voltage controlled oscillator (VCO) in X-band with a double H-shape metamaterial resonator (DHMR) based on a high-Q is proposed with a metamaterial (MTM) structure to improve the phase noise and the output power. The proposed VCO has been exhibited low phase noise and the high output power for a superior performance of the frequency synthesizer. The DHMR has a high-Q at resonance frequency through the strong coupling of the E-field. This character makes the phase noise excellent. The VCO using the DHMR is designed in X-band so as to apply frequency synthesizer of the radar systems. The output power is 7.33 dBm and the phase noise is -119 ~ 122 dBc/Hz at 100 kHz offset of the carrier frequency.