Fig. 1. Equivalent circuit model of a klystron input cavity

Fig. 2. Schematic of a klystron input cavity with input microwave and beam

Fig. 3. Gap voltage versus frequency

Fig. 4. Input microwave power versus frequency

Fig. 5. Input microwave power versus externally-loaded quality factor (Q₁)

Fig. 6. Complex coupling coefficient versus frequency

Fig. 7. Mutual inductance versus frequency