High Efficiency Compact Microwave Sources Using Electrostatic Potential Depression
| Autor: | Quinn R. Marksteiner, Haoran Xu, Bruce E. Carlsten |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
010302 applied physics
Materials science Klystron business.industry Circuit design Direct current High voltage 01 natural sciences Electronic Optical and Magnetic Materials law.invention Bunches law 0103 physical sciences Inductive output tube Optoelectronics Electrical and Electronic Engineering business Microwave Beam (structure) |
| Zdroj: | IEEE Transactions on Electron Devices. 68:1930-1935 |
| ISSN: | 1557-9646 0018-9383 |
| DOI: | 10.1109/ted.2021.3060681 |
| Popis: | In this article, we report theoretical and design studies on the application of an electrostatic potential depression (EPD) on two types of traditional microwave sources, the klystron and the inductive output tube (IOT), both operating in the UHF band. The EPD is implemented by a section of the metallic beam pipe on which a direct current (dc) negative high voltage is applied. Inside the EPD section, the modulated electron beam develops into bunches over a very short longitudinal distance, indicating a possible design approach for a compact device. With the application of an EPD, the peak value of the first harmonic current in a microwave tube can be further increased compared to that in a conventional design, suggesting higher circuit efficiency. As the electron beam leaves the EPD section, the reacceleration of the beam provides a longitudinal cooling effect. With the addition of an EPD, circuit power extraction efficiency above 80% is achieved in both the modified design of the IOT and the novel conceptual circuit design of the klystron. |
| Databáze: | OpenAIRE |
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