NDLI: Practical Design of Emittance Dominated Linear Beams for RF Amplifiers

Content Provider	IEEE Xplore Digital Library
Author	Whaley, D.R.
Copyright Year	1963
Abstract	As the frequency of linear beam RF amplifiers increases, the effect of electron beam emittance starts to play a more important role in the design of real world devices. Accurate analytic models and quantitative predictive capability are of particular value when determining the operating parameter regime of a new device or when performing tradeoffs based on specific design criteria. Several considerations relating to emittance effects in the RF amplifiers are presented, and are seen to play a role for thermionic devices operating at millimeter wave frequencies and above, and for field emitter devices as low as microwave frequencies. Existing theory originally derived for particle beams in high-energy physics research is applied specifically to methods and the parameter regimes found in RF amplifier development. Practical enhancements to some expressions allow for accurate prediction of beam behavior without the need for time consuming numerical analysis and optimization. In this vein, beam emittance effects on RF defocusing in the high power energy extraction sections of RF circuits are also analyzed. The general formulation developed here has been validated with numerical optics simulations across a wide range of beam properties typical of those found in devices operating from the microwave to terahertz frequency regimes.
Sponsorship	IEEE Electron Devices Society
Starting Page	1726
Ending Page	1734
Page Count	9
File Size	1470700
File Format	PDF
ISSN	00189383
Volume Number	61
Issue Number	6
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Cathodes Radio frequency Electron beams Force Optics Integrated circuit modeling linear beams. Beam confinement beam emittance electron beam equilibrium electron beam optics linear beams
Content Type	Text
Resource Type	Article
Subject	Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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