rhombic
Description
The rhombic
object creates a rhombic antenna. It consists of a
rhombus with a feed at one acute angles and a termination resistor at the other acute angle.
It has a simple design and is highly directional. These antennas are used in shortwave radio
broadcasting and point-to-point communications.
Creation
Description
creates a rhombic antenna.
The dimensions are chosen for resonant frequency of 510 MHz. The default rhombic antenna
is fed at one acute angle and the other acute angle is terminated with a load of 500
ohms. ant
= rhombic
sets Properties using one or more
name-value pairs. For example, ant
= rhombic(Name,Value)ant = rhombic('ArmLength', 3)
creates
a rhombic antenna with an arm of length 3 meters.
Properties
Object Functions
show | Display antenna, array structures or shapes |
axialRatio | Axial ratio 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 |
efficiency | Radiation efficiency of antenna |
EHfields | Electric and magnetic fields of antennas; Embedded electric and magnetic fields of antenna element in arrays |
impedance | Input impedance of antenna; scan impedance of array |
mesh | Mesh properties of metal, dielectric antenna, or array structure |
meshconfig | Change mesh mode of antenna structure |
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 |
rcs | Calculate and plot radar cross section (RCS) of platform, antenna, or array |
returnLoss | Return loss of antenna; scan return loss of array |
sparameters | Calculate S-parameter for antenna and antenna array objects |
vswr | Voltage standing wave ratio of antenna |
Examples
References
[1] Decker, R. “The Influence of Gain and Current Attenuation on the Design of the Rhombic Antenna.” IRE Transactions on Antennas and Propagation 7, no. 2 (April 1959): 188–196.
Version History
Introduced in R2020b