《MAGNETRONS》求取 ⇩

Chapter ⅠINTRODUCTION1

1.1.General description of the magnetron1

Chapter ⅡTHE ELECTRICAL MECHANISM5

2.1.Principle of the magnetron5

2.2.The movements of charges in electric and magnetic fields8

2.3.The"cyclotron"motion11

2.4.Movement of a particle in crossed electric and magnetic fields14

2.5.The cut-off parabola21

Chapter ⅢTHE CIRCUIT24

3.1.The anode as a delay line24

3.2.General considerations concerning non-homogeneous delay circuits24

3.3.The closed ring-shaped delay circuit35

3.4.The phase velocity in the closed delay circuit37

Chapter ⅣCONDITIONS FOR OSCILLATION40

4.1.Electrons synchronised with the r.f.electric field40

4.2.Elimination of unfavourably-phased electrons45

4.3.Unwanted modes of oscillation47

Chapter ⅤEXAMPLES OF PRACTICAL DELAY LINES AND CATHODES53

5.1.The most common delay lines in magnetrons53

a)The unstrapped delay line53

b)The"Rising-sun"structure57

c)The strapped anode63

5.2.The cathode68

Chapter ⅥTHE CARACTERISTICS OF MAGNETRONS73

6.1.The performance chart and Rieke diagram73

6.2.The"Q"value78

6.3.The"cold"pulling81

6.4.Effect of a long transmission line83

6.5.Measurement of Q values88

LITERATURE94

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