Among microwave sources like Klystron, Magnetron, TWT, gyrotron, Gunn Diode, Tunnel Diode, IMPATT Diode etc., which can provide the maximum output power?
I would expect a gyratron to be by far the highest power source. They are designed to minimise the power loss in the conducting walls and eliminate small details that get hot and melt and are used in very high power plasma applications.
Adding to the colleagues: The power generated from any source depends on its operating frequency and construction such that such sources are characterized by figure of merit. which is PF^2,
WHERE P IS THE MAXIMUM OUTPUT POWER FROM THE SOURCE AND F IS ITS OPERATING FREQUENCY. It is so that the solid state devices has lower figure of merit than the vacuum tube devices. This because of the nature of transport in solid state and in vacuum. In solid state the maximum speed is limited by the scattering of electrons during their motion in the material. In vacuum tubes the electrons can be accelarted to much higher speed.
Among the tubes themselves there is also appreciable differences depemding on their construction and principle of operation. It is that the Gyratron has the highest figure of merit. For more details please see the lin:
https://books.google.com.eg/books?id=WW3dCgAAQBAJ&pg=PA9&lpg=PA9&dq=comparison+of+the+operating+power+of+microwave+tubes&so
wish you success
Basically, Magnetron, TWT, gyrotron, Klystron are high powewr devices.
Solid state devices offers low power. It has a basic capability to operate on low voltage and can handle/generate low power.
Multi cavity Klystron and TWT are the high power amplifiers. No of cavity/length of interaction will decide the gain. TWT has wider bandwidth.
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