A 22-GHz Ultra Low Phase Noise Push-PushudDielectric Resonator Oscillator Using MMICs

摘要

In this paper, we present a 22-GHz ultra lowudphase noise push-push dielectric resonator oscillator (DRO)udusing MMICs fabricated by 2- m GaAs HBT process. udThis circuit demonstrated a low phase noise of -114 dBc/Hz and -134 dBc/Hz at offset frequency of 100 kHz and 1 MHz,udrespectively. The second harmonic output power is above 6uddBm with a fundamental suppression of over 30 dBc. ThisudDRO exhibits good phase noise performance based on theudfigure-of-merit carrier frequency, offset frequency, and dcudpower compared with the reported push-push DRO, whichudis due to low 1/f noise HBT and reproducible MMIC chips.udIn addition, this is the first reported push-push DROudimplemented using MMICs.