A broadband tunable Gunn harmonic oscillator in the 90-GHz range
Abstract
Gunn oscillators for the frequency region from 75 to 110 GHz are currently mostly designed as harmonic oscillators. A description is presented of a novel Gunn oscillator which contains a common waveguide resonator for fundamental and harmonic waves. The tuning range (-3dB) is 15 GHz and covers the frequency region from 79.5 GHz to 94.5 GHz. Attention is given to the use of the oscillator in a three-diode power combiner circuit with 60 mV power output. Its employment in a varactor-tuned two-diode oscillator with 55 mW power output is also considered. The adaptation of the Gunn diode in the considered design is obtained with the aid of a lambda/4 radial line transformer, which performs simultaneously as a series resonator at the fundamental frequency.
- Publication:
-
Wissenschaftliche Berichte AEG Telefunken
- Pub Date:
- 1981
- Bibcode:
- 1981WisBT..54..189B
- Keywords:
-
- Broadband;
- Gunn Diodes;
- Harmonic Oscillators;
- Millimeter Waves;
- Frequency Response;
- Tuning;
- Varactor Diodes;
- Waveguides;
- Electronics and Electrical Engineering