Question

For the experimental study of small microwave antennas, a free space environment with minimum interference by external objects, the facilities required are:

1. RF screens, VSWR meter, waveguide twist
2. UHF screens, slotted waveguides, power meter
3. Anechoic chamber, Network analyzer, Pattern recorder
4. Dark room facility, Digital recorder, Bolometer

Answer 1

Correct Answer - Option 2 : UHF screens, slotted waveguides, power meter

UHF:

Generally, the UHF band is used for TV transmission.

The signals having UHF (30 - 3000 MHz) are propagated through line-of-sight communication, which is nothing but space wave propagation, i.e. frequencies in the UHF range propagate by means of space waves.

Slotted Section:

Slotted lines are used for microwave measurements and consist of a movable probe inserted into a slot in a transmission line. Slotted lines can measure standing waves, wavelength, and, with some calculation or plotting on Smith charts, a number of other parameters including reflection coefficient and electrical impedance. 

Power meter:

It measures the output power.