4.1. 6 Cost 4- 7 4.1,7 Noise and Harmonics 4-7 4.1..8 Parameters Versus Frequency 4-9 4.1.9 Parameters Versus Power Level 4-15 4.2 Klystron 4-16 4.2.1 Periodic Permanent Magnetic Focusing 4-17 4.2.2 Circuit Efficiency 4-20 4.2.3 Klystron Efficiency With Solenoidal Focusing 4-25 4.2.4 Heat Dissipation and Beam Collection 4-27 4.2.5 Variations of Supply Voltages 4-34 4.2.6 Noise, Gain and Harmonic Characteristics 4-37 4.2.7 Tube Designs 4-40 4.2.8 Tube Lifetime 4-43 4.2.9 Weight and Cost 4-43 4.2.10 Conclusions 4-46 4.3 System Considerations 4-48 4.3.1 Amplitron Gain and Efficiency 4-48 4.3.2 Cascaded Vs Parallel Configurations 4-50 4.3.3 Cascaded Amplitron Gain 4-56 4.3.4 Amplifier Noise 4-56 4.3.5 Klystron Power Level 4-61 4.3.6 Converter Filter Requirements 4-64 4.4 Conclusions and Recommendations 4-69 5. POWER SOURCE INTERFACE AND DISTRIBUTION 5.1 Power Source Characteristics 5-1 5.2 Power Source-Converter Interface 5-3 5.3 Power Distribution Flow Paths 5-6 5.4 Magnetic Interaction 5-12 5.5 DC to RF Converter Protection 5-15 5.6 Power Distribution System 5-19 5.7 Power Distribution Cost and Weight 5-23 5.8 Power Budget 5-24 5.9 Conclusions and Recommendations 5-24
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