Compact High-Power Microwave Oscillators
Abstract
Numerical modeling and experimental measurements are reported of a novel high-power X-band( 8 12 ) microwave oscillator operating without the application of external magnetic insulation. Radiation is produced by modulation of an electron beam, propagated solely under the beams self-forces. Numerical modeling indicates efficiencies of ~25% , corresponding to~220 from a 500, 1.7 electron beam, with efficiencies of ~30% obtained as the quality of the electron beam improves through revision of the electron accelerator, informed by the experimental results. Named the Self-Insulating Backward-Wave Oscillator (SIBWO), the prototype design has been manufactured for proof of principle experiments. The electron beam and the microwave output have been measured. The measured output mode TM01 and frequency of9.25GHz both agree with the numerical model. The full-width-half-maximum microwave pulse duration 50ns was shorter and the microwave power ~8MW was less than in the numerical simulations. Analysis of these results has identified modifications to enable increased output power in future work.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 30, 2022
- Accession Number
- AD1181792
Entities
People
- Alan D. Phelps
- Kevin Ronald
- Philip Macinnes
Organizations
- University of Strathclyde