Chandra Amma Palanisamy

MathWorks

Last seen: Today | Active since 2021

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I am a Engineer at MathWorks. DISCLAIMER: Any advice or opinions here are my own, and in no way reflect that of MathWorks

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Answered
How to Simulate a Cylindrical Dipole with a Physical Gap in MATLAB?
The Cylindrical Dipole with a Physical Gap can be designed and analyzed in Antenna Toolbox using its 3D authoring capabilities. ...

5 days ago | 0

Answered
plotting Antenna pattern considering special relativity
The transformed angles must be evaluated numerically before you can plot the radiation pattern. In your code, theta and phi are ...

5 days ago | 0

Answered
Reducing the computation time of the planar antenna array pattern calcuation
The main computational cost comes from repeatedly evaluating the exponential terms over the entire (θ, ϕ) grid inside the nested...

5 days ago | 0

Answered
Has someone ever come across running an RF plot and obtaining different results when different frequency ranges are selected?
The different results are caused by differences in the mesh generated for each analysis. In Antenna Toolbox™, the default meshin...

5 days ago | 0

Answered
can anybody post the code for CPW-feeding mechanism to a patch antenna?
Starting in R2026b, the pcbStack object in Antenna Toolbox™ supports CPW feed creation through the FeedDefinitions property, all...

5 days ago | 0

Answered
delta m in Beamwidth of the antenna
The ∆m value shown in the antenna beamwidth plot represents the difference in directivity magnitude between markers C2 and C1. ...

14 days ago | 0

Answered
Radiation Pattern Of Wire Antennas Of Different lengths
The wire antennas of different lengths can be modelled by converting a dipole antenna into a wire structure using the wireStack ...

14 days ago | 0

Answered
function similar to Vivaldi element pattern
To design Vivaldi antennas, use the Antenna Toolbox vivaldi, vivaldiOffsetCavity, and vivaldiAntipodal antenna objects which sup...

14 days ago | 0

Answered
Lens Antenna Design
Using the Antenna Toolbox dielectricLens object, one can design and analyze dielectric lens antennas.

14 days ago | 0

Answered
Antenna radiant power (v/m)^2 pattern value wildly inconsistent across effectively identical simulations
Hi, Could you please share a minimal MATLAB example (preferably using a simple patch antenna) that reproduces the issue? Includ...

14 days ago | 0

Answered
Is there any way to create a phased array using the customAntennaMesh command ?
The customAntennaMesh can be directly assigned as an Element in the phased array objects Ex. phased.ULA. ant = customAntennaMes...

14 days ago | 0

Answered
Error filling holes for shared_channel:patternCustom:RepeatedPoints. Floating point numbers are not allowed as holes. They should be converted to character vectors.
This error usually occurs when patternCustom receives duplicate or nearly identical direction points in the phi/theta data. It e...

18 days ago | 0

Answered
how can i plot the radiation intensity in general by matlab for aperture antenna
Antenna Toolbox provides built-in aperture antennas including horn, hornConical, hornCorrugated, hornConicalCorrugated, hornPott...

18 days ago | 0

Answered
DESIGN A LOOP ANTENNA AND COMPARE ITS CHARACTERSTICS AT VARIOUS DIMENSIONS
Antenna Toolbox already includes loop antennas such as loopCircular and loopRectangular. By varying parameters such as radius, o...

18 days ago | 0

Answered
Results difference for a conical horn antenna in CST and Antenna Toolbox
Hi Evangelos, The Antenna Toolbox in MATLAB can be utilized to design and analyze horn antennas. Could you please share your sc...

19 days ago | 0

Answered
How to extract the Impedance Matrix of the Method of Moments (MoM) in antenna toolbox?
Hi, Currently there is no supported workflow in Antenna Toolbox to directly retrieve or extract the Method of Moments (MoM) imp...

19 days ago | 0

Answered
how to calculate the nulls, minors, majors and grating lobes of an antenna array in matlab
You can use the polarpattern plot in Antenna Toolbox to visualize the radiation pattern and compute parameters such as nulls, ma...

19 days ago | 0

Answered
How to add a substrate to an antenna pattern
The RFID example uses customAntennaMesh to create the antenna. To include a PET substrate (90 µm thick, εr ≈ 3.5), you can recre...

25 days ago | 0

Answered
How to specify matched loads for elements in Antenna Toolbox built-in arrays?
IIn Antenna Toolbox array objects such as linearArray, circularArray, and rectangularArray, AmplitudeTaper specifies the excitat...

26 days ago | 0

Answered
how to apply the LMS algorithm on circular array of dipole antenna?
In Antenna Toolbox, you can create a circular array of dipole antennas using the circularArray object and analyze its radiation ...

1 month ago | 0

Answered
How to create a directional antenna with Antenna Toolbox for RF coverage analysis
The above-mentioned directional antenna can be modeled in Antenna Toolbox using its 3-D Modelling capabilities. After creating t...

2 months ago | 0

Answered
Plot radiation pattern of 2 antennas omnidirectional.
The array of two antennas can be created using the array catalog available in Antenna Toolbox. The radiation pattern of both the...

2 months ago | 0

Answered
3D plot of antenna factor
The issue is that AFlog is calculated for a single pair of PHI and THETA values, resulting in a scalar, but it is later used in ...

2 months ago | 0

Answered
Antenna Toolbox function patternCustom gives error in standalone application: " Undefined function or variable 'patternCustom' "
This behavior is expected because patternCustom is an Antenna Toolbox function that requires Antenna Toolbox license during exec...

2 months ago | 0

Answered
how to get radiation pattern (2d and 3D) for an antenna?
Since Antenna Toolbox was introduced in R2015a, you can generate both 2D and 3D radiation patterns of an antenna directly using ...

2 months ago | 0

Answered
How can I tri sectorized an antenna?
Tri-sectorization can be achieved by creating three directional antennas and orienting them with azimuth angles separated by 120...

3 months ago | 0

Answered
How to Define Differential (Balanced) Transmission Lines in Antenna Toolbox Using customAntenna?
RF PCB Toolbox provides built-in transmission line catalogs, including support for differential transmission lines. For more inf...

3 months ago | 0

Answered
matlab code for an E-shaped antenna?
Antenna Toolbox already includes a built-in E-shaped patch antenna model (patchMicrostripEnotch). You can use it to analyze S11 ...

3 months ago | 0

Answered
How to write an 3D-fdtd code for SAR calculation of microstrip patch antenna?
Currently, Antenna Toolbox does not support the FDTD solver. For a list of supported solvers, see the Solvers documentation.

3 months ago | 0

Answered
EHfield function in MATLAB produces 3 x 441 matrix. What do these rows and column represent?
EHfields returns the complex electric and magnetic field vectors at a set of observation points. The 3 rows correspond to the x...

3 months ago | 0