Title :
High spectral purity oscillator at 40 GHz: Design using air-dielectric cavity
Author :
Hati, Archita ; Nelson, Craig W. ; Riddle, Bill F. ; Howe, David A.
Author_Institution :
Nat. Inst. of Stand. & Technol., Boulder, CO, USA
Abstract :
We describe the design of a low-phase modulated (PM) noise 40 GHz oscillator that uses a conventional air-dielectric cavity resonator as a frequency discriminator to clean up the PM noise of a commercial 10 GHz dielectric resonator oscillator (DRO) multiplied by four. The main features of this design incorporate (1) unloaded cavity quality factor (Q) of 30,000, (2) high coupling coefficient, (3) large carrier suppression by use of interferometric signal processing, (4) large operating signal power of approximately 1 Watt (W), and (5) relatively small size.
Keywords :
Q-factor; cavity resonators; dielectric resonator oscillators; interferometry; millimetre wave oscillators; phase modulation; phase noise; air-dielectric cavity resonator; dielectric resonator oscillator; frequency 10 GHz; frequency 40 GHz; high coupling coefficient; high spectral purity oscillator; interferometric signal processing; large carrier suppression; low-phase modulated noise; unloaded cavity quality factor; Cavity resonators; Couplings; Mixers; Noise; Oscillators; Resonant frequency; Sensitivity;
Conference_Titel :
Frequency Control Symposium (FCS), 2010 IEEE International
Conference_Location :
Newport Beach, CA
Print_ISBN :
978-1-4244-6399-2
DOI :
10.1109/FREQ.2010.5556293
