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A Continuously Tunable 65--15-GHz Gunn Oscillator
- Source :
- IEEE Transactions on Microwave Theory and Techniques. 33:610-619
- Publication Year :
- 1985
- Publisher :
- Institute of Electrical and Electronics Engineers (IEEE), 1985.
-
Abstract
- A phase-locked second harmonic Gunn oscillator, mechanically tunable from 65 to 115 GHz, has been developed for use as a Iocal oscillator (LO) in millimeter radio astronomy. The oscillator's output power is greater than 2 mW over most of its operating range, and exceeds 10 mW from 80 to 102 GHz. Its frequency can be electronically tuned approximately +-200 MHz by varying the bias voltage on the Gunn diode it is phase locked by exploiting this bias tuning. The oscillator consists of a commercially available, packaged GaAs Gunn diode which is mounted in a coaxial resonator of adjustable length. Descriptions of the mechanical design and phase-lock circuit are given. Extensive experimental measurements of the tuning range and power output for oscillators with different resonator dimensions also are reported.
- Subjects :
- Physics
Radiation
business.industry
Electrical engineering
Biasing
Astrophysics::Cosmology and Extragalactic Astrophysics
Variable-frequency oscillator
Condensed Matter Physics
Vackář oscillator
Resonator
Optoelectronics
Electrical and Electronic Engineering
Parametric oscillator
business
Harmonic oscillator
Diode
Gunn diode
Subjects
Details
- ISSN :
- 00189480
- Volume :
- 33
- Database :
- OpenAIRE
- Journal :
- IEEE Transactions on Microwave Theory and Techniques
- Accession number :
- edsair.doi...........2bf1e6ac882891f54e93b6147c3634ce
- Full Text :
- https://doi.org/10.1109/tmtt.1985.1133036