Question
Download Solution PDFWhich of the following is not a microwave generation source?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDF- Microwave tubes are used for high power/frequency generation.
- Tubes generate and amplify high levels of microwave power more cheaply than solid-state devices.
- Klystrons and Traveling-Wave Tube(TWT) are examples of linear beam tubes with a focused electron beam (as in CRT).
-
In these tubes, both the Magnetic and electric fields are at right angles to each other.
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The Magnetron is an example of cross-field tubes.
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Magnetrons are the cross-field tubes in which the electric and magnetic fields cross, i.e. run perpendicular to each other.
Microwave tubes are classified into two types:
Linear-Beam Tube:
Crossed-Field Tube:
|
Parameters |
Klystron |
Magnetron |
TWTs |
|
Frequency |
Few GHz to hundred GHz |
1 - 25 GHz |
1 to 10 GHz |
|
Output Power |
10 MW |
Several kW |
Order of kW |
|
Efficiency |
10 % |
30 - 60 % |
20 % |
|
Uses |
Oscillator and Amplifier |
Oscillator |
Oscillator and Amplifier |
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