Crossed-field Microwave Devices V3
Principal Elements of Crossed-Field Devices
- 1st Edition - November 10, 2012
- Imprint: Academic Press
- Editor: G Mourier
- Language: English
- Paperback ISBN:9 7 8 - 0 - 1 2 - 4 1 2 4 5 0 - 9
- eBook ISBN:9 7 8 - 0 - 3 2 3 - 1 4 3 6 5 - 3
Crossed-field Microwave Devices, Volume I: Principal Elements of Crossed-Field Devices focuses on the developments, trends, and approaches in the study of crossed-field microwave… Read more
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Crossed-field Microwave Devices, Volume I: Principal Elements of Crossed-Field Devices focuses on the developments, trends, and approaches in the study of crossed-field microwave devices. The selection first offers information on periodic structures and cathode gun and its static characteristics. Discussions focus on circuits for traveling wave crossed-field tubes; effect of tolerance on interdigital lines; mode spectrum of strapped type magnetron; and electron gun optics and associated static characteristics of injection systems. The text then takes a look at noise and space-charge modes, including preoscillation phenomena in space-charge clouds below the main oscillation threshold; cutoff characteristics of the static magnetron diode; magnetron diode oscillations; and noise in crossed-field electron beams. The manuscript then examines the interaction of beams and circuits, as well as small and large signal theory and experiment. The selection is a valuable reference for readers interested in the elements of crossed-field microwave devices.
Contributors to Volume I
Foreword
Preface
Contributors to Volume II
Contents of Volume II
Chapter 1 ∙ Introduction
Chapter 2 ∙ Periodic Structures
2.1 General Properties of Periodic Structures
I. Fundamental Considerations about Delay Lines
II. Floquet's Theorem
III. Orthonormality Properties of the Modes
IV. Equality of the Magnetic and Electric Energies Stored in a Cell
V. Space Harmonics
VI. Group Velocity and Energy Velocity
VII. The Reactance Theorem and Dispersion
VIII. Perturbations by a Current—General Cases
IX. Babinet's Principle
List of Symbols
References
2.2 Theory of Bar Lines
I. Transverse Modes on Infinite Arrays of Bars
II. Periodic Array
III. Calculation of the Characteristic Admittance and Space Harmonic Intensity
List of Symbols
References
2.3 Circuits for Traveling Wave Crossed-Field Tubes
I. The Interdigital Line
II. The Ladder Line
III. The Helix and the Vane Type Line
IV. A Biperiodic Structure: The Multiple Interdigital Line
V. The Infinitely Thin Zigzag Line
VI. Main Parameters of the Interdigital Line, Half Ladder Line, and Vane Type Line
List of Symbols
References
2.4 The Interdigital Line as a Waveguide
I. Introduction
II. Region I—Enclosed Region
III. Region II—Energy Between Fingers
IV. Region III—Interaction Space Side of Fingers
V. Propagation Factor and Low-Frequency Cutoff
VI. Solution for Impedance
VII. Example of Calculated Results
Appendix—Static Field Analysis for Region II
List of Symbols
References
2.5 The Effect of Tolerance on Interdigital Lines
I. Continuous Small Periodic Errors
II. Stepwise Systematic Error (Misregister)
III. Stepwise Random Errors
IV. Conclusions
List of Symbols
References
2.6 Measurements
I. The Delay Factor
II. The Coupling Impedance
III. The Matching of the Input and Output Circuits
IV. Attenuation of the Structure
List of Symbols
References
2.7 Mode Spectrum of Strapped Type Magnetron
I. Strapped Type
List of Symbols
References
Chapter 3 ∙ The Cathode Gun and Its Static Characteristics
3.1 The Cathode edited
3.1.1 The Coated Types
3.1.2 The Matrix Types
3.2 Electron Gun Optics and Associated Static Characteristics of Injection Systems
3.2.1 Beam Launching in High Power Crossed-Field Tubes
3.2.2 Static Characteristics of Injection Crossed-Field Tubes
3.2.3 A New Type of Crossed-Field Electron Gun
Chapter 4 ∙ Dynamic Phenomena: Noise and Space-Charge Modes
4.1 Preoscillation Phenomena in Space-Charge Clouds below the Main Oscillation Threshold
I. Magnetron Theory and the "Steady State."
II. The Failure of the Cutoff Relation
III. The Nature of Preoscillation
IV. A First-Order Theory for an Oscillating Double Stream Model
V. Implications of the Theory
VI. A Qualitative Picture of Magnetron Starting
Conclusion
List of Symbols
References
4.2 Symmetrical States and Their Breakup
I. Introduction
II. Thermal Spread
III. Collisions
IV. Relativity and Self-Magnetic Fields
V. End Effects and Imperfections
VI. Space Charge
VII. Symmetrical Clouds
VIII. Brillouin Flow in Planar Devices
IX. The Establishment of the Brillouin State in Transience
X. Stability
XI. Rotating Axes—Larmor Frame
XII. Rotating Axes—the Wave Frame
XIII. The Threshold
XIV. Efficiency of DC Energy Conversion, and Back-Bombardment
XV. The Build-Up of Asymmetries
XVI. Turbulence and Multiple Streaming
List of Symbols
References
4.3 Statistical Theory of the Magnetron Space Charge
I. Introduction
II. Phase-Space Description of the Space-Charge Distribution
III. Approximate Determination of the Space-Charge Distribution
IV. Confirmation and Conclusion
List of Symbols
References
4.4 Electron Interaction in the Static Magnetron
I. Early Observations
II. More Recent Experiments
III. Present Status of the (Static) Magnetron Problem
IV. Concluding Remarks
List of Symbols
References
4.5 Cutoff Characteristics of the Static Magnetron Diode
I. Introduction
II. The Current before Cutoff
III. Thermal Effects at Cutoff
IV. The Magnetron Diode after Cutoff
List of Symbols
References
4.6 Magnetron Diode Oscillations
I. Introduction and General Discussion
II. Theory of Velocity-Resonance Oscillations
III. Experimental Observations of Oscillations
IV. Conclusions
List of Symbols
References
4.7 Noise in Magnetrons
I. Sources of Noise
List of Symbols
References
4.8 Noise in Crossed-Field Electron Beams
I. Introduction
II. Review of Experiments
III. Reviews of Theoretical Investigations
IV. Conclusions
List of Symbols
References
4.9 Enhanced Emission
I. Introduction
II. Enhanced Emission from Pure Metal Cathodes
III. Present Understanding of Enhanced Emission
IV. Significance of Enhanced Emission in Magnetron Design and Development
List of Symbols
References
Chapter 5 ∙ Dynamic Phenomena: Interaction of Beams and Circuits
5.1 Small Signal Theory and Experiment
5.1.1 The RF Theory of Crossed-Field Devices
5.1.2 Small Signal Theory
5.2 Large Signal Theory and Experiment
5.2.1 Comments about Large Signal Theory
5.2.2 Nonlinear Theory of Injected-Beam Crossed-Field Devices
5.2.3 Crossed-Field Electron Interaction in Space-Charge Limited Beams
5.2.4 The Large Signal Behavior of Crossed-Field Traveling Wave Devices
5.2.5 Numerical Analysis of Beam Type Crossed-Field Traveling Wave Tubes
5.2.6 Planar Magnetron Theory and Applications
5.2.7 Effect of the Elimination of Higher-Order Space Harmonics on Magnetron Characteristics
5.2.8 Calculation of the Performance Chart of a Magnetron
5.2.9 Space-Charge Considerations of Magnetrons
5.2.10 Field Patterns and Oscillation Build-Up in Magnetrons
Appendix to Volume I
Subject Index
- Edition: 1
- Published: November 10, 2012
- Imprint: Academic Press
- Language: English
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