Analytical Nonlinear Adiabatic Theory of the Autophase Microwave Tube

Eugene BELYAVSKIY; Sergei KHOTIAINTSEV

doi:10.1587/transele.E95.C.368

Analytical Nonlinear Adiabatic Theory of the Autophase Microwave Tube

Eugene BELYAVSKIY, Sergei KHOTIAINTSEV

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We present an analytical nonlinear adiabatic theory of the microwave electron device that we call the Autophase Microwave Tube (AMT). In contrast to the well-known Traveling Wave Tube (TWT), the AMT exploits a highly efficient non-synchronous beam-wave interaction for the amplification (or generation) of the HF electromagnetic waves, and, differently from klystron and such hybrid devices as twystron, it employs a continuous beam-wave interaction. Because of these distinctive features, the AMT presents a special class of microwave electron devices, which feature very high electronic efficiency (which tends to 100%) and large bandwidth. Here, we develop the theory that allows one to find the profiles of static longitudinal electric or magnetic field (or both) over the device length, which yield negligible de-bunching together with highly efficient amplification (generation) of the HF electromagnetic wave. The analysis of electron motion in the bunch is performed by means of Lyapunov stability theory. The numerical example illustrates the possibility of achieving the electronic efficiency of AMT as high as 92%. We compare different autophase regimes in the AMT and show that the profiling of the longitudinal static magnetic focusing field in the helix AMT with the non-azimuthally symmetric wave has many advantages with respect to other regimes.

Publication: IEICE TRANSACTIONS on Electronics Vol.E95-C No.3 pp.368-377

Publication Date: 2012/03/01

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Online ISSN: 1745-1353

DOI: 10.1587/transele.E95.C.368

Type of Manuscript: PAPER

Category: Microwaves, Millimeter-Waves

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Eugene BELYAVSKIY, Sergei KHOTIAINTSEV, "Analytical Nonlinear Adiabatic Theory of the Autophase Microwave Tube" in IEICE TRANSACTIONS on Electronics, vol. E95-C, no. 3, pp. 368-377, March 2012, doi: 10.1587/transele.E95.C.368.
Abstract: We present an analytical nonlinear adiabatic theory of the microwave electron device that we call the Autophase Microwave Tube (AMT). In contrast to the well-known Traveling Wave Tube (TWT), the AMT exploits a highly efficient non-synchronous beam-wave interaction for the amplification (or generation) of the HF electromagnetic waves, and, differently from klystron and such hybrid devices as twystron, it employs a continuous beam-wave interaction. Because of these distinctive features, the AMT presents a special class of microwave electron devices, which feature very high electronic efficiency (which tends to 100%) and large bandwidth. Here, we develop the theory that allows one to find the profiles of static longitudinal electric or magnetic field (or both) over the device length, which yield negligible de-bunching together with highly efficient amplification (generation) of the HF electromagnetic wave. The analysis of electron motion in the bunch is performed by means of Lyapunov stability theory. The numerical example illustrates the possibility of achieving the electronic efficiency of AMT as high as 92%. We compare different autophase regimes in the AMT and show that the profiling of the longitudinal static magnetic focusing field in the helix AMT with the non-azimuthally symmetric wave has many advantages with respect to other regimes.
URL: https://global.ieice.org/en_transactions/electronics/10.1587/transele.E95.C.368/_p

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@ARTICLE{e95-c_3_368,
author={Eugene BELYAVSKIY, Sergei KHOTIAINTSEV, },
journal={IEICE TRANSACTIONS on Electronics},
title={Analytical Nonlinear Adiabatic Theory of the Autophase Microwave Tube},
year={2012},
volume={E95-C},
number={3},
pages={368-377},
abstract={We present an analytical nonlinear adiabatic theory of the microwave electron device that we call the Autophase Microwave Tube (AMT). In contrast to the well-known Traveling Wave Tube (TWT), the AMT exploits a highly efficient non-synchronous beam-wave interaction for the amplification (or generation) of the HF electromagnetic waves, and, differently from klystron and such hybrid devices as twystron, it employs a continuous beam-wave interaction. Because of these distinctive features, the AMT presents a special class of microwave electron devices, which feature very high electronic efficiency (which tends to 100%) and large bandwidth. Here, we develop the theory that allows one to find the profiles of static longitudinal electric or magnetic field (or both) over the device length, which yield negligible de-bunching together with highly efficient amplification (generation) of the HF electromagnetic wave. The analysis of electron motion in the bunch is performed by means of Lyapunov stability theory. The numerical example illustrates the possibility of achieving the electronic efficiency of AMT as high as 92%. We compare different autophase regimes in the AMT and show that the profiling of the longitudinal static magnetic focusing field in the helix AMT with the non-azimuthally symmetric wave has many advantages with respect to other regimes.},
keywords={},
doi={10.1587/transele.E95.C.368},
ISSN={1745-1353},
month={March},}

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TY - JOUR
TI - Analytical Nonlinear Adiabatic Theory of the Autophase Microwave Tube
T2 - IEICE TRANSACTIONS on Electronics
SP - 368
EP - 377
AU - Eugene BELYAVSKIY
AU - Sergei KHOTIAINTSEV
PY - 2012
DO - 10.1587/transele.E95.C.368
JO - IEICE TRANSACTIONS on Electronics
SN - 1745-1353
VL - E95-C
IS - 3
JA - IEICE TRANSACTIONS on Electronics
Y1 - March 2012
AB - We present an analytical nonlinear adiabatic theory of the microwave electron device that we call the Autophase Microwave Tube (AMT). In contrast to the well-known Traveling Wave Tube (TWT), the AMT exploits a highly efficient non-synchronous beam-wave interaction for the amplification (or generation) of the HF electromagnetic waves, and, differently from klystron and such hybrid devices as twystron, it employs a continuous beam-wave interaction. Because of these distinctive features, the AMT presents a special class of microwave electron devices, which feature very high electronic efficiency (which tends to 100%) and large bandwidth. Here, we develop the theory that allows one to find the profiles of static longitudinal electric or magnetic field (or both) over the device length, which yield negligible de-bunching together with highly efficient amplification (generation) of the HF electromagnetic wave. The analysis of electron motion in the bunch is performed by means of Lyapunov stability theory. The numerical example illustrates the possibility of achieving the electronic efficiency of AMT as high as 92%. We compare different autophase regimes in the AMT and show that the profiling of the longitudinal static magnetic focusing field in the helix AMT with the non-azimuthally symmetric wave has many advantages with respect to other regimes.
ER -