LIST OF ILLUSTRATIONS -- Continued Figure Page 4-11 Temperature Drop Across Vanes Versus Frequency 4-14 4-12 DC Current Versus Frequency 4-14 4-13 Amplitron Weight and Cost Versus Power 4-15 4-17 Klystron Bunching with PPM Focusing 4-18 4-18 Radial Beam Spreading with PPM Focusing 4-18 4-19 Klystron Output Gap with PPM Focusing 4-19 4-20 Klystron Bunching with PPM Focusing, Shorter Magnet Period and Increased Voltage at Gap 1 4-21 4-21 Graphical Analysis of the Collector Depression 4-22 4-22 Klystron Power Summary 4-23 4-2 3 Effect of Temperature on Output-Circuit Efficiency 4-24 4-24 Effect of Temperature on in the Klystron Output Cavity 4-24 4-2 5 Efficiency Vs Output Power for Solenoid-Focused Klystron 4-26 4-2 6 Body Heat Versus Saturated Output Power 4-29 4-2 7 Output Cavity of 43 kW Klystron (Longitudinal Cross Section) 4-31 4-2 8a Outline of the PPM Klystron 4-32 4-28b Outline of the 48 kW Solenoid Klystron 4-33 4-29 Klystron Voltage Control 4-36 4-30 Gain and Noise in PPM-Focused Klystron 4-39 4-31 Computed Noise Characteristic of the PPM Klystron 4-40 4-32 Summary of Design Parameters 4-41 4-33 Weight and Cost Analysis of the PPM Klystron with 5.57 kW Output 4-44 4-34 Weight and Cost Analysis of an EM Klystron with 16 kW Output 4-45 4-35 Weight and Cost Analysis of an EM Klystron with 48 kW Output 4-46 4-36 Comparison of Tube Types 4-47 4-37 Amplitron Gain and Efficiency 4-49 4-38 Cascaded Amplifier Configuration Phase Characteristics 4-52 4-39 Parallel Feed Amplifier Considerations Phase Characteristics 4-53 4-40 Cascaded Amplifier Chain 4-54 4-41 Parallel Amplifier Chain 4-55 4-42 Amplitrons in Cascade 4-57 4-43 Amplifier Noise 4-58
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