REV 4- Antenna Systems

A theoretical antenna which is also known as isotrophic antenna that emits the signal uniformly in all directioi J)other words, at distance d from the antenna, in any direction,the transmitted signal power is the same.

• a. Elementary Doublet

• b. Dipole

• c. back to front ratio

• d. Isotropic Radiator

Accomplished by spreading the ends of the feedline and adjusting the
spacing until optimum performance is reached.

• a. Delta Matching

• b. Quarter Wave Matching

• c. Stub Matching

• d. Gamma Matching

It is the range of frequency over which an antenna will radiate effectively or
satisfactory.

• a. Front-to-Back Ratio

• b. Antenna

• c. Antenna Bandwidth

• d. Polarization

A metallic conductor system capable of radiating and capturing electromagnetic energy.

• a. Antenna

• b. Radiowave

• c. Transmission Line

• D. Optical Fiber

How to tell the difference between
Passive and Active Antennas?

• a.no amplier & integrated amplifier

• b. with amplifier & integrated amplifier

• c. a & b

• d. None of the above

It states that antenna characteristics, design and calculations are the same whether the antenna is used as a receiving or transmitting antenna.

• a. Antenna Reciprocal

• b. Antenna Reciprocity

• c. Antenna

• d. Radiation Pattern

The actual length of the
antenna is not equal to its
electrical length. It is shorter
due to capacitance effects.

• a. First effect

• b. Second Effects

• c. End Effects

• d. All of the above

Is a parameter of an antenna system which measures the degree to which the radiation
emitted is concentrated in a single direction.

• a. Directivity Gain

• b. Directivity

• c. Power Gain

• d. Radiation Pattern

It is defined as the ratio of the power density in a particular direction of one antenna to the
average power density that would be radiated by the omnidirectional antenna.

• a. Directivity Gain

• b. Directivity

• c. Power Gain

• d. Radiation Pattern

What is this formula?

Gp=nGp

• a. Directivity Gain

• b. Directivity

• c. Power Gain

• d. Radiation Pattern