Antenna Fundamentals Quiz

They are patterns that are plotted as a function of electric and magnetic fields and are plotted on logarithmic scale.

• Radiation pattern

• Fields pattern

• Power pattern

• Polar Plot

It is a polar diagram indicating how well an antenna transmits or receives in different directions.

• Poynting vector

• radiation pattern

• major lobe

• azimuthal view

It quantifies how an antenna deviates from an isotropic radiator or receiver

• Efficiency

• Major Lobe

• Front to back ratio

• Antenna gain

Power patterns are plotted as a function of square of the magnitude of electric and magnetic fields. They are commonly plotted on logarithmic or ______________.

• Power Scale

• Voltage scale

• dB Scale

• azimuthal scale

The major part of the radiated field, which covers a larger area is called _________, which indicates the __________ of the antenna.

• directivity, gain

• directionality, efficiency

• effective area, gain

• major lobe, directivity

The radiating near field or __________ is the region between the near and far fields.

• Fresnel field

• reactive field

• Fraunhofer field

• true field

The field that is less than (2D^2)/lambda is called the __________.

• near field

• immediate near field

• radiating field

• reactive field

In this antenna region, the radiation pattern does not change shape with distance.

• Near Field

• Radiating Field

• Fresnel Field

• Far Field

It is a point source antenna in free space and radiate power equally in all directions.

• Omnidirectional

• Unidirectional Antenna

• Anistropic Antenna

• Isotropic Antenna

It is considered as the simplest practical antennas from a theoretical point of view.

• Elementary Doublet

• Hertzian Dipole

• Half-wave Dipole

• All of these