Title :
Transmission-line stabilized monolithic oscillators
Author :
Ang, Kian Sen ; Underhill, Michael J. ; Robertson, Ian D.
Author_Institution :
Dept. of Electron. & Electr. Eng., Surrey Univ., Guildford, UK
fDate :
2/1/2001 12:00:00 AM
Abstract :
A novel technique for frequency stabilization and phase-noise reduction of monolithic oscillators is presented in this paper. It employs simple transmission-line resonators, which are many wavelengths long to increase the oscillator quality factor. Monolithic oscillators at 20 and 40 GHz are realized for the application of this technique. Phase noise reduction of more than 20 dB was achieved for both oscillators. The single-sideband phase noise obtained was -100 dBc/Hz at 100-kHz offset for the 20-GHz oscillator and -90 dBc/Hz at 1-MHz offset for the 40-GHz oscillator. The approach is implemented by using readily available transmission lines, which are open- or short-circuited at one end and connected to the monolithic-microwave integrated-circuit (MMIC) oscillator at the other end. Thus, it presents significant potential in the development of low-cost MMIC oscillators with enhanced noise performance
Keywords :
MIMIC; MMIC oscillators; Q-factor; circuit stability; frequency stability; integrated circuit noise; millimetre wave oscillators; phase noise; resonators; 20 GHz; 40 GHz; EHF; SHF; SSB phase noise; enhanced noise performance; frequency stabilization; low-cost MIMIC oscillators; low-cost MMIC oscillators; monolithic MM-wave IC; monolithic integrated circuits; monolithic microwave IC; monolithic oscillators; oscillator quality factor; phase-noise reduction; single-sideband phase noise; transmission-line resonators; transmission-line stabilized oscillators; Circuit noise; Circuit stability; Dielectric substrates; Frequency conversion; MMICs; Microwave oscillators; Phase noise; Q factor; Transmission lines; Voltage-controlled oscillators;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
