Microwave magnetrons:
Gespeichert in:
| Format: | Buch |
|---|---|
| Sprache: | English |
| Veröffentlicht: |
New York (u.a.)
McGraw-Hill
1948
|
| Schriftenreihe: | Radiation Laboratory <Cambridge, Mass.>: Radiation Laboratory series.
6. |
| Schlagworte: | |
| Online-Zugang: | Inhaltsverzeichnis |
| Beschreibung: | XVIII, 806 S. Ill., graph. Darst. |
Internformat
MARC
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| 245 | 1 | 0 | |a Microwave magnetrons |c Urheber: United States / National Defense Research Committee. Hrsg. von George B. Collins* |
| 264 | 1 | |a New York (u.a.) |b McGraw-Hill |c 1948 | |
| 300 | |a XVIII, 806 S. |b Ill., graph. Darst. | ||
| 336 | |b txt |2 rdacontent | ||
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| 490 | 1 | |a Radiation Laboratory <Cambridge, Mass.>: Radiation Laboratory series. |v 6. | |
| 650 | 4 | |a Magnétrons | |
| 650 | 4 | |a Magnetrons | |
| 700 | 1 | |a Collins, George B. |e Sonstige |4 oth | |
| 710 | 2 | |a USA |b National Defense Research Committee |e Sonstige |0 (DE-588)5225540-2 |4 oth | |
| 830 | 0 | |a Radiation Laboratory <Cambridge, Mass.>: Radiation Laboratory series. |v 6. |w (DE-604)BV001889891 |9 6. | |
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Datensatz im Suchindex
| _version_ | 1804116470098034688 |
|---|---|
| adam_text | MICROWAVE MAGNETRONS
Edited by
GEORGE B COLLINS
DEPARTMENT OF PHYSICS
UNIVERSITY OF ROCHESTER
OFFICE OF SCIENTIFIC RESEARCH AND DEVELOPMENT
NATIONAL DEFENSE RESEARCH COMMITTEE
I-
§■
NEW YORK • TORONTO • LONDON
MCGRAW-HILL BOOK COMPANY, INC
Contents
FOREWORD by L A DuBridge vii
PREFACE ix
Chap 1 INTRODUCTION 1
1-1 Early Types of Magnetrons 1
1-2 The British Cavity Magnetron 8
1 -3 Description of a Microwave Magnetron 10
14 The Resonant System 13
1-5 The Cathode 23
1-6 The Space Charge 24
1-7 D-c Voltage Magnetic-field Relationship 29
1-8 Component Modes 32
1-9 Efficiency and Frequency Stability 35
1-10 Performance Charts and Rieke Diagrams 37
1- 11 Pulsed Magnetrons 42
PART I RESONANT SYSTEMS
Chap 2 THE UNSTRAPPED RESONANT SYSTEM 49
2- 1 The Magnetron Cavity as a Circuit Problem 49
2-2 Equivalent Network for the Side Resonators 52
2-3 Equivalent Network for the Interaction Space 52
24 Spectrum Predicted by the Equivalent Network 54
2-5 Admittance of Side Resonators by Field Theory 56
2-6 Admittance of the Interaction Space by Field Theory 63
2-7 The Spectrum Predicted by Field Theory 66
2-8 End-space Effects 69
2- 9 The Interaction Field 74
240 Applications and Limitations 76
241 The Computation of Admittances 77
Chap 3 THE RISING-SUN SYSTEM 83
34 The Spectrum 83
3- 2 The Interaction Field 92
3-3 The Effect of the Mode Spectrum and Field Characteristics on
x-mode Operation 98
34 The Effects of Various Parameters on the Mode Spectrum and the
Interaction Field of a Rising-sun Magnetron 101
xiii
XIV CONTENTS
3-5 Closed-end Rising-sun Systems 110
3- 6 The Unloaded Q and yJCIL 113
Chap 4 THE STRAPPED SYSTEM 118
4- 1 Introduction 118
4-2 Analysis of Strapped Systems 121
43 Rings of Networks 123
Symmetrical Systems 131
4-4 Fixed-frequency Systems 131
4-5 Effects of Various Parameters on the Mode Spectrum 135
Asymmetrical Systems 140
4 6 Pattern Distortion and Mode-spectrum Effects Caused by Loading 141
4-7 Effects of Strap Breaks 147
4- 8 Effects Caused by Various Types of Tuning 157
Chap 5 OUTPUT CIRCUITS 167
5- 1 Introduction 167
5-2 The 4-terminal Transducer 171
5-3 The Q-circle and the Rieke Diagram 178
5-4 General Considerations Concerning the Output Circuit Problem 187
5-5 Coaxial-output Circuits 191
5- 6 Waveguide-output Circuits 194
PART II ANALYSIS OF OPERATION
Chap 6 THE INTERACTION OF THE ELECTRONS AND THE ELEC
TROMAGNETIC FIELD 207
6T Introduction 207
6- 2 The Assumptions Underlying the Analysis 209
6-3 The Field Equations 217
6-4 The Equations of Motion 222
6-5 Conditions Under Which Relativistic Effects May Be Eliminated 228
6-6 The Nonrelativistic Equations 231
6-7 Symmetrical States 243
6-8 The Bunemann Small-amplitude Theory 253
6-9 Analysis by the Method of Self-consistent Fields 265
6T0 Qualitative Discussion of the Interaction 274
6- 11 Departures from the Rotating-wave Hypothesis 282
Chap 7 THE SPACE CHARGE AS A CIRCUIT ELEMENT 288
7*1, Introduction 288
7- 2 The Electron Stream as a Circuit Element 291
7-3 Analysis of the Resonant System 297
74 Interactions Between Space Charge and Resonator 305
7-5 The Description of Magnetron Performance 316
7-6 The Mismatched Transmission Line as a Resonant Load 320
7-7 Experimental Data on the Space-charge Properties 329
CONTENTS xv
8T Steady-state Properties of the Modes 339
8-2 Steady-state Properties of the Pulser 343
8-3 Types of Mode Changes 345
8-4 Survey of the Process of Mode Selection 348
8-5 The Mode Skip 350
8-6 The Mode Shift 351
8-7 Instability of the Power Supply: “Mode Jumps” 355
8-8 Outline of a Theory of Starting 357
8-9 Observations and Discussion of Starting 367
8 10 Observations on R-f Buildup 372
8-11 Effect of Design and Operation on Starting 376
8- 12 Interactions Between Modes 380
Chap 9 NOISE 388
9- 1 Introduction 388
9- 2 Pre-oscillation Noise 389
9-3 Signal-to-noise Ratio 394
9-4 Origins of Noise 395
PART III DESIGN
Chap 10 PRINCIPLES OF DESIGN 401
10-1 The Primary Design Parameters 401
10-2 The Method of Magnetron Design 403
10-3 Conditions Imposed on the Resonant System 406
10-4 Conditions Imposed on the Cathode 411
10-5 Conditions Imposed on the Magnetic Circuit 414
10-6 The Scaling Laws 414
10-7 Reduced Operating Data on Various Types of Magnetrons 419
10-8 Determination of the Secondary Design Parameters 435
10-9 Comparison of the Reduced Performance Charts 441
10- 10 The Universal Performance Chart 448
10-11 The General Design Formulas 454
10- 12 Numerical Example 458
Chap 11 THE RESONANT SYSTEM 460
11- 1 Factors Influencing Choice of Resonant System 460
Strapped Resonant Systems ; 461
11-2 Wavelength and Characteristic Admittance 461
11-3 Unloaded Q 466
11-4 Mode Separation 468
Rising-sun Resonant Systems 470
11-5 Limitations on Secondary Design Parameters 472
11-6 Desirable Mode Spectrum 474
11-7 Comparison Between Open-resonator and Closed-end Systems 477
11-8 Ratio of Resonator Depths 478
11 9 Wavelength Calculations for the 7r-mode 479
Chap 8 TRANSIENT BEHAVIOR 339
XVI CONTENTS
Output 481
1140 General Properties of Coaxial and Waveguide Outputs 481
1141 Coaxial Outputs 482
1142 Coaxial-to-waveguide Transitions 485
1143 Waveguide Outputs 486
1144 Waveguide Transformers 491
1145 Examples of Waveguide Output 497
1146 End-space Geometry 498
Chap 12 THE CATHODE 503
Emission Phenomena of Magnetron Cathodes 503
124 Characteristics of Cathodes under Pulsed Conditions 503
12-2 Alkaline-earth Oxide Cathodes—Test Methods 505
12-3 Alkaline-earth Oxide Cathodes—Life Tests and Sparking Phe
nomena 508
12*4 Thorium Oxide Cathodes 515
12-5 Secondary Electron-emission Properties of Magnetron Cathodes 517
Heat Balance in the Cathode 519
12-6 Thermal Behavior of a Pulsed Cathode 520
12-7 Measurements of Back-bombardment Power 525
12-8 Thermal Considerations in Cathode Design 528
Establishment of an Axial Boundary to the Space Charge 537
12- 9 Cathode End Shields 537
Chap 13 THE MAGNETIC CIRCUIT 540
134 Design of Permanent Magnets 540
13- 2 Magnet Charging 548
13-3 Magnetic Stabilization 550
13-4 Field Uniformity 552
13- 5 Testing and Measurements 553
PART IV TUNING AND STABILIZATION
Chap 14 MECHANICAL TUNING 561
144 General Considerations 561
Inductive and Capacitive Tuning 564
14- 2 Symmetric Inductive Tuning: Sprocket Tuning 565
14-3 Symmetric Capacitive Tuning: The Cookie Cutter 570
14-4 Other Symmetric Inductive and Capacitive Methods of Tuning 572
14-5 Unsymmetric Inductive Tuning 575
Coupled-circuit Tuning 576
14-6 General Theory 576
14-7 Double-output Tuning 576
14-8 Symmetric Double-output Tuning 582
14-9 Cavity Tuning 583
1440 Single-stub Tuning 589
Chap 15 ELECTRONIC TUNING 592
Electron-beam Tuning 592
15-1 General Considerations 592
15-2 Fundamental Equations of Beam Tuning 594
15-3 The Principles of Electron-beam Tuning in a Magnetic Field 599
15-4 The Engineering Equations of Electron-beam Tuning 604
15-5 Scaling 610
15-6 Internal vs External Cavity Tuning 611
Magnetron Diode Tuning 615
15-7 Fundamental Principles 615
15-8 Small-signal Theory 616
15- 9 Experimental Data on Large-signal Conditions 619
15*10 Other Methods 621
Chap 16 STABILIZATION OF FREQUENCY 622
16*1 Introduction 622
16*2 The Ideal Stabilizer 624
16- 3 Coupling Methods 626
16*4 Means of Damping the Extraneous Modes 633
16*5 The Design of Stabilizing Circuits 639
PART V PRACTICE
Chap 17 CONSTRUCTION 649
17*1 Fabrication of Anode Blocks 649
17- 2 Brazing and Soldering 662
17*3 Selected Brazing Problems 670
17-4 Chemical Processes 674
17-5 Metal-to-glass Seals 676
17-6 Cathode and Heater Construction 685
17- 7 Tube Evacuation and Processing 693
17*8 Examination of Metals 694
Chap 18 MEASUREMENTS 698
Measurements of the Resonant Sytsem 698
18*1 Test Equipment Components 698
18- 2 Cavity-wavelength Measurements 702
18-3 Measurement of Standing Waves - , • 705
18*4 Field-pattern Measurements 710
18*5 Measurement of Q 713
18*6 The Stabilization Factor 723
18*7 Magnetron-mode Identification 726
18*8 Cathode-lead Loss 728
18-9 Tube-model Techniques 729
Operating Measurements 730
18*10 Measuring Techniques 732
18*11 Operating Technique 735
CONTENTS xvii
Chap 19 TYPICAL MAGNETRONS 739
19-1 The LCW L-band C-w Magnetron 740
19-2 The CM16B S-band C-w Magnetron 744
19-3 2J38-2J39 Low-voltage S-band Magnetrons 747
194 Type 2J22-2J34 10-cm Pulsed Magnetrons 751
19-5 4J70-4J77 High-power S-band Tunable Magnetrons 756
19-6 The HP10V High-power S-band Magnetron 760
19-7 The BM50 Very Low Power X-band Magnetron 764
19-8 2J41 Low-power Stabilized X-band Magnetron 766
19-9 The 2J42 Low-voltage X-band Magnetron 770
19-10 The 725A Magnetron 774
19-11 The 2J51 Magnetron 778
19-12 4J50 (4J52, 4J578) High-power 3-cm Magnetron 780
19-13 The AX9 Rising-sun Magnetron 784
19-14 The 3J31 and 3J21 Rising-sun Magnetrons 786
19-15 22-cavity Rising-sun Magnetron 790
19-16 The Closed-end 38-cavity Rising-sun Magnetron 791
19-17 The XCR High-power 2 6-cm C-w Magnetron 795
INDEX 797
xviii CONTENTS
|
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| physical | XVIII, 806 S. Ill., graph. Darst. |
| psigel | TUB-nseb |
| publishDate | 1948 |
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| series | Radiation Laboratory <Cambridge, Mass.>: Radiation Laboratory series. |
| series2 | Radiation Laboratory <Cambridge, Mass.>: Radiation Laboratory series. |
| spelling | Microwave magnetrons Urheber: United States / National Defense Research Committee. Hrsg. von George B. Collins* New York (u.a.) McGraw-Hill 1948 XVIII, 806 S. Ill., graph. Darst. txt rdacontent n rdamedia nc rdacarrier Radiation Laboratory <Cambridge, Mass.>: Radiation Laboratory series. 6. Magnétrons Magnetrons Collins, George B. Sonstige oth USA National Defense Research Committee Sonstige (DE-588)5225540-2 oth Radiation Laboratory <Cambridge, Mass.>: Radiation Laboratory series. 6. (DE-604)BV001889891 6. HEBIS Datenaustausch application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=001320023&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis |
| spellingShingle | Microwave magnetrons Radiation Laboratory <Cambridge, Mass.>: Radiation Laboratory series. Magnétrons Magnetrons |
| title | Microwave magnetrons |
| title_auth | Microwave magnetrons |
| title_exact_search | Microwave magnetrons |
| title_full | Microwave magnetrons Urheber: United States / National Defense Research Committee. Hrsg. von George B. Collins* |
| title_fullStr | Microwave magnetrons Urheber: United States / National Defense Research Committee. Hrsg. von George B. Collins* |
| title_full_unstemmed | Microwave magnetrons Urheber: United States / National Defense Research Committee. Hrsg. von George B. Collins* |
| title_short | Microwave magnetrons |
| title_sort | microwave magnetrons |
| topic | Magnétrons Magnetrons |
| topic_facet | Magnétrons Magnetrons |
| url | http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=001320023&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA |
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