microwave devices

Which One Of The Following Can Be Used For Amplification Of Microwave Energy? A. TWT B.Magnetron C. Reflex klystron D. Gunn diode Which one is used for amplification of microwave energy? A. TWT B.Magnetron C. Reflex klystron D. Gunn diode Which of the following is used as the high power microwave oscillator? Q. Which of