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WorksheetsAntenna and Wave Propagation
Total questions: 12
Worksheet time: 9mins
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
The region where the transition of the electromagnetic field from reactive to radiative begins is
Fresnel field
Fraunhofer field
The region where the radiation pattern of the antenna is independent of the distance from the antenna
Fresnel Field
Fraunhofer field
Reactive near field
Radiative near field
