The angular separation, in which the magnitude of the radiation pattern decreases by 50% (or -3dB) from the peak of the main beam.

a. Beamwidth or Half-Power Beam Width

The angular span between the first pattern nulls adjacent to the main lobe.

a. Beamwidth or Half-Power Beam Width

It is defined as the product of the power fed to the antenna and its power gain, i.e., this refers to the power radiated by the antenna.

a. Effective Radiated Power (ERP)

b. Effective Isotropic Radiated Power (EIRP)

It is defined as the power radiated by an antenna in its favoured direction, taking the gain of the antenna into account as referenced to the isotropic radiator.

b. Effective Isotropic Radiated Power (EIRP)

a. Effective Radiated Power (ERP)

What is this formula? Gdbi =101og(G/1) Gdbd =10 l0g( G/1.64)

b. Effective Isotropic Radiated Power (EIRP)

a. Effective Radiated Power (ERP)

The power density of a practical antenna is the measure of power/square (in space) from the center of the antenna multiplied by the practical antenna gain.

a. Effective Radiated Power (ERP)

b. Effective Isotropic Radiated Power (EIRP)

What is this formula? Pd =PtGd/ 4πr*2

a. Effective Radiated Power (ERP)

b. Effective Isotropic Radiated Power (EIRP)

Considered to extend out from the antenna to a distance of Fw = πD²/8入=A/2入

a. Near Field or Fresnel Region

c. Far Field or Radiation Field or Fraunhoffer Region

Zone between two regions.

a. Near Field or Fresnel Region

c. Far Field or Radiation Field or Fraunhoffer Region

Considered to extend out from a distance of Ff =2D*2/入

c. Far Field or Radiation Field or Fraunhoffer Region

a. Near Field or Fresnel Region

Whereas an ungrounded antenna with its image forms an antenna array, the bottom of the grounded antenna is joined to the top of the image; the system acts as an antenna of double size.

c. Effects of Ground on Antennas

A network of buried wires directly under the antenna, consisting of a large number of radials extending from the base of the tower, like spokes on a wheel, and placed 15 and 30 cm below the ground.

c. Effects of Ground on Antennas

REV 4- Antenna Systems

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

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

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

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

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

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

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

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

a. Antenna

b. Radiowave

c. Transmission Line

D. Optical Fiber

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

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

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

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

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

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

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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.

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

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

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

How to tell the difference between
Passive and Active Antennas?

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

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

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

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.

What is this formula?

Gp=nGp

Access all questions and much more by creating a free account

Similar Resources on Wayground

Popular Resources on Wayground

Discover more resources for Computers

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.

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

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

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

How to tell the difference betweenPassive and Active Antennas?

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

The actual length of theantenna is not equal to itselectrical length. It is shorterdue to capacitance effects.

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

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

What is this formula?Gp=nGp

Access all questions and much more by creating a free account

Similar Resources on Wayground

Popular Resources on Wayground

Discover more resources for Computers

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

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

How to tell the difference between
Passive and Active Antennas?

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

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

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.

What is this formula?

Gp=nGp