Title :
A 9 GHz oscillator stabilized with a STW delay line
Author :
Hugli, R. ; Lott, U.
Author_Institution :
Swiss Federal Inst. of Technol., Zurich, Switzerland
Abstract :
The authors present a STW (surface transverse wave)-stabilized X-band oscillator. The main feedback oscillator circuit consists of a third-harmonic STW delay line at 2.25 GHz, a two-stage amplifier, and a diplexing network. The second stage of the amplifier in the oscillator loop doubles the frequency from 2.25 GHz to 4.5 GHz. An additional 4.5-GHz-to-9-GHz MESFET doubler is integrated on the same substrate. The oscillator delivers 5 mW of output power. Phase noise is at least -90 dBc/Hz down at 20 kHz from the carrier.<>
Keywords :
acoustic microwave devices; microwave oscillators; solid-state microwave circuits; surface acoustic wave devices; ultrasonic delay lines; 5 mW; 9 GHz; MESFET doubler; STW delay line; X-band oscillator; diplexing network; feedback oscillator circuit; output power; phase noise; surface transverse wave stabilisation; two-stage amplifier; Circuits; Delay lines; Frequency; Gain; Insertion loss; MESFETs; Optical amplifiers; Oscillators; Power generation; Transducers;
Conference_Titel :
Microwave Symposium Digest, 1989., IEEE MTT-S International
Conference_Location :
Long Beach, CA, USA
DOI :
10.1109/MWSYM.1989.38715
