dipoleFolded
Create folded dipole antenna
Description
The dipolefolded
object is a folded dipole antenna on the
xy- plane.
The width of the dipole is related to the diameter of an equivalent cylindrical dipole by the equation
, where
d is the diameter of the equivalent cylindrical pole
r is the radius of the equivalent cylindrical pole.
For a given cylinder radius, use the cylinder2strip
utility function to calculate the equivalent width. The
default folded dipole is center-fed. The feed point of the dipole coincides with the
origin. The origin is located on the xy- plane. When compared to the
planar dipole
, the folded dipole structure increases the input impedance
of the antenna.
Creation
Description
creates a
half-wavelength folded dipole antenna.dF
= dipoleFolded
creates a half-wavelength folded dipole antenna with additional properties
specified by one or more name-value pair arguments. dF
= dipoleFolded(Name,Value)Name
is the property name and Value
is the corresponding
value. You can specify several name-value pair arguments in any order as
Name1
, Value1
,
...
, NameN
,
ValueN
. Properties not specified retain their default
values.
Properties
Object Functions
axialRatio | Calculate and/or plot axial ratio of antenna or array |
bandwidth | Calculate and/or plot absolute bandwidth of antenna |
beamwidth | Beamwidth of antenna |
charge | Charge distribution on antenna or array surface |
current | Current distribution on antenna or array surface |
design | Design prototype antenna or arrays for resonance around specified frequency or create AI-based antenna from antenna catalog objects |
efficiency | Radiation efficiency of antenna |
EHfields | Electric and magnetic fields of antennas or embedded electric and magnetic fields of antenna element in arrays |
impedance | Input impedance of antenna or scan impedance of array |
info | Display information about antenna, array, or platform |
memoryEstimate | Estimate memory required to solve antenna or array mesh |
mesh | Mesh properties of metal, dielectric antenna, or array structure |
meshconfig | Change meshing mode of antenna, array, custom antenna, custom array, or custom geometry |
optimize | Optimize antenna or array using SADEA optimizer |
pattern | Plot radiation pattern and phase of antenna or array or embedded pattern of antenna element in array |
patternAzimuth | Azimuth plane radiation pattern of antenna or array |
patternElevation | Elevation plane radiation pattern of antenna or array |
rcs | Calculate and plot monostatic and bistatic radar cross section (RCS) of platform, antenna, or array |
resonantFrequency | Calculate and/or plot resonant frequency of antenna |
returnLoss | Return loss of antenna or scan return loss of array |
show | Display antenna, array structures, shapes, or platform |
sparameters | Calculate S-parameters for antennas and antenna arrays |
vswr | Voltage standing wave ratio (VSWR) of antenna or array element |
wireStack | Create single or multi-feed wire antenna |
Examples
References
[1] Balanis, C.A. Antenna Theory: Analysis and Design. 3rd Ed. New York: Wiley, 2005.
[2] Volakis, John. Antenna Engineering Handbook, 4th Ed. New York: Mcgraw-Hill, 2007.
Version History
Introduced in R2015a