Design and Measurement of a Broadband Sidewall Coupler for a W-Band Gyro-TWA
| Autor: | Adrian W. Cross, Wenlong He, Lei Zhang, Paul McElhinney, Craig R. Donaldson, J. R. Garner |
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| Rok vydání: | 2015 |
| Předmět: |
Physics
Radiation business.industry Amplifier Bandwidth (signal processing) Physics::Optics Condensed Matter Physics Distributed Bragg reflector Rat-race coupler law.invention Optics W band law Gyrotron Broadband Physics::Accelerator Physics Hybrid coupler Electrical and Electronic Engineering business Nonlinear Sciences::Pattern Formation and Solitons QC |
| Zdroj: | IEEE Transactions on Microwave Theory and Techniques. 63:3183-3190 |
| ISSN: | 1557-9670 0018-9480 |
| DOI: | 10.1109/tmtt.2015.2464302 |
| Popis: | The input coupler is an important component for a microwave amplifier. In this paper, a sidewall single-hole input coupler for a W-band gyrotron traveling-wave amplifier that operates at the frequency range of 90–100 GHz was designed and measured. Instead of using a cutoff waveguide, a broadband Bragg-type reflector with a small spread in phase was optimized for use as part of the input coupler. The minimum radius of the reflector was two times the size of a cutoff waveguide, which reduced the possibility for some of the beam electrons being collected in this section and lost to the amplifier interaction region. |
| Databáze: | OpenAIRE |
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