MICROWAVE COMMUNICATION QUIZ

Rician fading

Wavelength fading

Rayleigh fading

Slow fading

Indicates only the range of a target

Indicates both the range and azimuth of a target

Is used to check the percentage of modulation

Is used for receiver alignment

Tunnel diode

Thyratron tube

Both B and C

Klystron tube

In a reflect klystron has its output taken from the reflector plate

Has a low Q factor for narrow operation.

Is equivalent to an LC resonant circuit

Produces a frequency which is independent of the cavity size.

Frequency modulation at the input cavity creates velocity modulation at the output cavity

Velocity modulation at the input cavity creates density modulation at the output cavity

Phase modulation at the input cavity creates velocity modulation at the output cavity.

Density modulation at the input cavity creates velocity modulation at the output cavity

Bunching would occur earlier in time

Oscillation will cease

Output power would increase

The frequency will decrease

100 GHz

1 GHz

100 MHz

10 GHz

All of these

Narrowing the beam width and increasing the pulse duration

Raising the peak power of the transmitter

Lowering the pulse frequency

At the collector

At the cathode end of the helix

At the control grid of the electron gun

At the collector end of the helix

Towards the earth

Towards the outer space

Away from the earth

Towards the ionosphere,