The VCO(Voltage Controlled Oscillator) with low phase noise and high reliability is implemented using nonlinear design, and its phase noise characteristics are compared with that of Lesson's equation. The microstripline coupled with dielectric resonat...
The VCO(Voltage Controlled Oscillator) with low phase noise and high reliability is implemented using nonlinear design, and its phase noise characteristics are compared with that of Lesson's equation. The microstripline coupled with dielectric resonator is realized as a high impedance inverter to improve the phase noise, and the quality factor of resonator circuit can be transferred to active device with the enhanced the loaded quality factor. The worst case and part stress analyses are achieved to obtain the high reliability of VCO. The developed VCO has the oscillating tuning factor of 0.56%[MHz/V] for the control voltage range of O~12[V]. This VCO requires the DC power of 160[mW]. The phase noise characteristics exhibit good performances of -94.18[dBc/Hz] at 10[KHz] and -116.3[dBc/Hz] at 100[KHz], respectively. And, the output power of 7.33[dBm] is measured.