What is the efficiency of two cavity klystron?

In general efficiency of two cavity klystron is about 40%. In general efficiency of reflex klystron is about 30%.

What is the frequency range of a two cavity klystron amplifier?

Klystrons can be used in the UHF region (300 MHz to 3 GHz) up to 400 GHz. There are several flavors of klystron amplifiers.

What is two cavity klystron explain its principle construction and working?

The electrons while passing through the second cavity, few of them are accelerated while bunches of electrons are decelerated. Hence, all the kinetic energy is converted into electromagnetic energy to produce the output signal. Amplification of such two-cavity Klystron is low and hence multi-cavity Klystrons are used.

What is drift space and velocity modulation in two cavity klystron?

Thus all the electrons while moving with different velocities get bunched in the drift space. This change in the velocity of electrons while moving due to RF input is known as velocity modulation. Once the electron bunching is done then the catcher cavity present at another end of the tube absorbs the beam energy.

What is the efficiency of a two cavity klystron?

The efficiency of a two-cavity klystron is about 40%. Losses occur primarily due to a non-ideal bundling of the electron density and the remaining energy of the electrons, which is converted into heat in the collector. The average output power is up to 500 kW and pulsed power is up to 30 MW at 10 GHz.

How are electrons produced in a cavity klystron?

Electron beams are produced from a source and the cavity klystrons are employed to amplify the signals. A collector is present at the end to collect the electrons. The whole set up is as shown in the following figure. The electrons emitted by the cathode are accelerated towards the first resonator.

How are klystron tubes used to make microwaves?

For the generation and amplification of Microwaves, there is a need of some special tubes called as Microwave tubes. Of them all, Klystron is an important one. The essential elements of Klystron are electron beams and cavity resonators. Electron beams are produced from a source and the cavity klystrons are employed to amplify the signals.

What are the essential elements of a klystron?

The essential elements of Klystron are electron beams and cavity resonators. Electron beams are produced from a source and the cavity klystrons are employed to amplify the signals. A collector is present at the end to collect the electrons. The whole set up is as shown in the following figure.