Title :
High frequency current mode oscillator employing fT integration technique
Author :
Khumsat, P. ; Worapishet, A. ; Payne, A.J.
Author_Institution :
Dept. of Electr. & Electron. Eng., Imperial Coll. of Sci., Technol. & Med., London, UK
fDate :
3/4/1999 12:00:00 AM
Abstract :
A low distortion high frequency oscillator is described, which is a development of the recently proposed fT-integrator, in which an amplitude control circuit is embedded inside the integrator. Simulation results suggest that, for the oscillation range 1-2.6 GHz, the total harmonic distortion (THD) of the output current signal is well below 0.5% for the output current level at 50% modulation depth (peak-to-peak). The phase noise of the oscillator is simulated to be -72 dBc/Hz at 1 MHz offset for 1% THD output current
Keywords :
UHF oscillators; circuit tuning; current-mode circuits; harmonic distortion; phase noise; variable-frequency oscillators; voltage-controlled oscillators; 1 to 2.6 GHz; THD; UHF current mode oscillator; VCO; VFO; embedded amplitude control circuit; fT-integrator; low distortion oscillator; phase noise; total harmonic distortion; ultra-high-frequency oscillator;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19990297
