Mehdi Hooshmand Rad
EE341
Lab5
Antenna Measurement
Objective:
Study radiation pattern, gain, realized gain and impedance characteristics of a dipole
antenna and two-element dipole arrays using EZNEC.
Lab Report:
1. Why is the electrical length of the so-called half-wave dipole actually taken to
be slightly less than 0.5 λ at the design frequency?
To eliminate the imaginary part of the input impedance, we can reduce the
antenna length slightly. Depending on the radius of the wire, “resonance” occurs
when the length is about 0.47 λ to 0.48 λ.
2. For each plot that you produced in EZNEC, copy and paste it into a document,
and caption it with a descriptive sentence.
, Figure1: SWR as a function of frequency for half-wave dipole
Figure2: 3D pattern of half-wave dipole
EE341
Lab5
Antenna Measurement
Objective:
Study radiation pattern, gain, realized gain and impedance characteristics of a dipole
antenna and two-element dipole arrays using EZNEC.
Lab Report:
1. Why is the electrical length of the so-called half-wave dipole actually taken to
be slightly less than 0.5 λ at the design frequency?
To eliminate the imaginary part of the input impedance, we can reduce the
antenna length slightly. Depending on the radius of the wire, “resonance” occurs
when the length is about 0.47 λ to 0.48 λ.
2. For each plot that you produced in EZNEC, copy and paste it into a document,
and caption it with a descriptive sentence.
, Figure1: SWR as a function of frequency for half-wave dipole
Figure2: 3D pattern of half-wave dipole
