customDualReflectors
Description
The customDualReflectors
object creates a dual-reflector
antenna with empty geometries for the main and sub reflectors and the
hornConical
element as the default exciter. Once you create the object,
you have to specify the geometry coordinates of the main and sub reflector surfaces in
N-by-3 matrices and assign them to the MainReflector
and SubReflector
properties of the object before using the
show
function to view the antenna. N represents the
total number of points to use for defining the geometry. Value of N can be
different for the main and the sub reflector. Alternatively, you can also use a
triangulation
object to define the reflector geometry. You can also change
the orientation of the reflectors and the exciter. You can use either a single antenna element
or an array as the exciter for the object. Further, you can also create an antenna array using
customDualReflectors
object as its element. Dual-reflector antennas have
very high gain and low spillover and are used in satellite communications.
Creation
Description
creates a
dual-reflector antenna with empty main and sub reflector geometries and conical horn
antenna as the default exciter. After creating the object, specify the coordinates of
the reflector surfaces in a N-by-3 matrix or import the coordinates
from a MAT file.cdr
= customDualReflectors
creates a custom dual reflector antenna, with additional Properties specified by one or
more name–value arguments. cdr
= customDualReflectors(Name=Value)Name
is the property name and
Value
is the corresponding value. You can specify several
name-value arguments in any order as Name1
=
Value1
, ...
,
NameN
=ValueN
. Properties not specified retain
their default values.
For example, cdr = customDualReflectors(FeedOffset=[0.0850 0 0])
relocates the feed to the point (0.0850, 0, 0) with respect to the origin.
Properties
Object Functions
show | Display antenna, array structures or shapes |
impedance | Input impedance of antenna; scan impedance of array |
sparameters | Calculate S-parameter for antenna and antenna array objects |
returnLoss | Return loss of antenna; scan return loss of array |
vswr | Voltage standing wave ratio of antenna |
pattern | Radiation pattern and phase of antenna or array; Embedded pattern of antenna element in array |
patternAzimuth | Azimuth pattern of antenna or array |
patternElevation | Elevation pattern of antenna or array |
optimize | Optimize antenna or array using SADEA optimizer |
axialRatio | Axial ratio of antenna |
beamwidth | Beamwidth of antenna |
current | Current distribution on antenna or array surface |
charge | Charge distribution on antenna or array surface |
EHfields | Electric and magnetic fields of antennas; Embedded electric and magnetic fields of antenna element in arrays |
mesh | Mesh properties of metal, dielectric antenna, or array structure |
rcs | Calculate and plot radar cross section (RCS) of platform, antenna, or array |
Examples
Version History
Introduced in R2022a
See Also
reflectorParabolic
| cassegrain
| gregorian
| cassegrainOffset
| gregorianOffset
| hornConical