Topic: Microwave Engineering
A reflex klystron is oscillating at 10GHz when operated in $2\frac{3}{4}$ mode, find the transit time of the electron in repeller space in nano seconds (ns).
- A. 0.25
- B. 0.275
- C. 0.036
- D. 0.55
Answer: B. 0.275
Explanation: The time period of the oscillation is $T = 1/f = 1 / 10\text{ GHz} = 0.1$ ns. The transit time in the repeller space $t_r$ is given by $n \times T$, where $n$ is the mode. For $2\frac{3}{4}$ mode, $n = 2.75$. Therefore, $t_r = 2.75 \times 0.1\text{ ns} = 0.275$ ns.