Antenna and Wave Propagation

Antenna is a transducer

• TRUE

• FALSE

The waves that travel from the load end to the source end in the event of an impedance mismatch

• Incident Wave

• Reflected Wave

• Standing Wave

A device which transfers or guides radio frequency energy from one point to another point is called:

• Transmission line

• Antenna

The factors to be satisfied for an EM signal to successfully radiate:

• Disturbance in the EM signal

• Length of the radiating element

• Power of the signal applied

• Impedance matching

The ratio of radiation intensity in a certain direction to average radiation intensity is:

• Gain

• Directivity

• Radiatio Pattern

For a linearly polarized wave, the axial ratio, AR is:

• infinity

• 1

• Between 1 and infinity

For circular wave polarization to occur:

• Two linearly polarized waves with equal magnitude and same phase

• Two linearly polarized waves with unequal magnitude with 90 degrees phase shift

• Two linearly polarized waves with equal magnitude with 90 degrees phase shift

• Two linearly polarized waves with unequal magnitude and same phase

The energy radiated by the antenna is represented by the _____ of the antenna

• Radiation Pattern

• Radiation Intensity

• Radiation Resistance

• Radiation Power Density

The antenna impedance must be matched to that of the _____ for maximum ____ to be achieved

• Line Feeding

  Power Transfer

• Transmission line

  Voltage transfer

• Line Feeding

  Radiation Resistance

An antenna capable of radiating in all directions is called:

• Omni-directional antenna

• Bi-directional antenna

• Directional antenna

• Broadside

  Antenna