| EPSRC Reference: |
GR/N24124/01 |
| Title: |
GYRO-TRAVELLING WAVE AMPLIFIER WITH A HELICALLY CORRUGATED INTERACTION WAVEGUIDE |
| Principal Investigator: |
Phelps, Professor ADR |
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| Department: |
Physics |
| Organisation: |
University of Strathclyde |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
30 May 2001 |
Ends: |
29 November 2004 |
Value (£): |
181,717
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| EPSRC Research Topic Classifications: |
| Digital Signal Processing |
Optical Devices & Subsystems |
| RF & Microwave Technology |
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Summary on Grant Application Form |
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In a gyrodevice, electrons gyrating in a magnetic field are coupled to electromagnetic radiation in such a manner that the radiation is amplified by extracting the electron kinetic energy. We will investigate a novel concept which uses a helical corrugation on the inside surface of a cylindrical waveguide to radically modify the wave dispersion giving eigenmodes with finite, constant group velocity in the region of near infinite phase velocity. This novel dispersion opens for the first time the potential for a broadband, efficient gyro-amplifier. The theoretical predictions for this new concept suggest bandwidths >30% and efficiencies -30% are attainable with high gains >40dB. We have performed a promising preliminary experiment and will build on our lead to create an amplifier based on the best understanding of this new technology and perform precision measurements of its gain, bandwidth, efficiency and stability against oscillations. The experiments will also investigate the sensitivity of the technique to beam energy with experiments at both 100 and 200keV (important to demonstrate suitability for commercial applications). This novel waveguide also offers the potential for high power (MW), high frequency (to 100s GHz) continuously tuneable oscillators given suitable beam dispersions. We will experimentally test this potential.
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Key Findings |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Potential use in non-academic contexts |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Impacts |
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| Description |
This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk |
| Summary |
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| Date Materialised |
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Sectors submitted by the Researcher |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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| Project URL: |
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| Further Information: |
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| Organisation Website: |
http://www.strath.ac.uk |