Title :
Fully monolithically integrated feedback voltage controlled oscillator [using PHEMTs]
Author :
Megej, A. ; Beilenhoff, K. ; Hartnagel, H.L.
Author_Institution :
Inst. fur Hochfrequentech., Tech. Univ. Darmstadt, Germany
fDate :
6/1/2000 12:00:00 AM
Abstract :
A fully monolithically integrated voltage controlled oscillator (VCO) using feedback technique is presented here. The circuit provides oscillation within the frequency range of 6.3-7.0 GHz. The corresponding tunable relative bandwidth is 10%. The feedback topology proves to provide a good linearity of the oscillation frequency dependence versus tuning voltage. The maximal deviation of the frequency behavior from its linear fit is /spl Delta/f=39 MHz. It is shown in the following that the feedback technique can be used for broadband VCO design.
Keywords :
HEMT integrated circuits; MMIC oscillators; feedback oscillators; voltage-controlled oscillators; 6.3 to 7.0 GHz; MMIC oscillators; PHEMTs; broadband VCO design; feedback topology; feedback voltage controlled oscillator; frequency behavior; maximal deviation; oscillation frequency dependence; tunable relative bandwidth; tuning voltage; Bandwidth; Circuit optimization; Circuit topology; Feedback; Frequency dependence; Linearity; Tunable circuits and devices; Tuning; Voltage control; Voltage-controlled oscillators;
Journal_Title :
Microwave and Guided Wave Letters, IEEE
