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What oscillator is used to produce frequencies in the microwave region.

What oscillator is used to produce frequencies in the microwave region. Correct Answer Klystron

Klystrons are the most ideal source of the microwave, used for microwave frequency measurements.

Based on the resonant cavities, klystron amplifiers are classified into two types.

  • Two cavity klystron amplifier
  • Reflex klystron amplifier

 

Important Comparisons:

The frequency range of different microwave sources are as shown:

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

 

Also, the frequency comparison of different oscillators are as shown:

Type of Oscillator   

 Approximate frequency range
Crystal oscillator Fixed frequency
Tickler feedback oscillator Nearly fixed frequency
Wien bridge oscillator 1 Hz to 1 MHz
Phase-shift oscillator 1 Hz to 10 MHz
Hartley's oscillator  10 kHz to 100 MHz
Colpitt's oscillator  10 kHz to 100 MHz

 

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