Main, back, and side lobe data matlab mathworks italia. Plot 3d antenna radiation patterns file exchange matlab central. It looks like the scaling works in one of the xyz axis, but not when the scaling goes from the origin radius. Hey there, i added two plots belongs to two antennas. If an array pattern has a beamwidth smaller than this, the directivity value will be inaccurate. Dec 12, 2014 purpose the aim of this tool is to provide an easy way to plot 3d polar antenna radiation pattern. Aside from that gain comparison, is it possible to say 5. Just convert the angle information from degrees to radians. Then, i entered the values by hand into an 11x11 matrix i called s. The present gui shows the radiation pattern from 3 dipoles in two types of display. If mage is a vector, all 3 arguments mage, phi and theta should be of the same size. The pattern is a polar plot with larger gain further away from the.
The program will polar plot array patterns for different excitation. Learn more about phased array, antenna gain, 3d plot, polar coordinates matlab, phased array system toolbox. Deaths exhibit a seasonal pattern in most parts of the world. Mathworks e leader nello sviluppo di software per il calcolo matematico per ingegneri e ricercatori. Dear math, just convert the angle information from degrees to radians. Antenna array analysis with custom radiation pattern matlab. Plot array pattern matlab mathworks united kingdom. Scribd e il piu grande sito di social reading e publishing al mondo. Main, back, and side lobe data matlab mathworks united. However, for simplification, a cartesian coordinate system a twodimensional system which refers to points in free space is often used. The variable rho is a measure of how intensely the antenna radiates for each value of theta. Rightclick the polar measurement window to change the properties, zoom in, or add more data to the plot. I measured the intensity of radiation around the antenna on an 11x11 grid with the antenna at the origin.
Use the same data to plot the 3d rectangular radiation pattern. You can visualize antenna geometry and analysis results in 2d and 3d. How to export data from cst microwave studio to other software origin, hfss. In particular i made a script that combine the horizontal and vertical antenna pattern in order to obtain the 3d antenna pattern of the antenna such that the result is a matrix of 360x360 elements. Visualize a radiation pattern and vector fields from user data. Interactive plot of radiation patterns in polar format matlab. This pattern needs to be converted to azel convention before the pattern can be placed in an array. My question is i would like to plot the following in polar coordinates to see how the main lobe is in degrees.
I found a function called patterncustom that plots the radiation pattern. Visualize the radiation pattern from an antenna in polar coordinates. The radiation pattern shown on a polar diagram is taken to be that of the plane in which the diagram plot itself. For example, a cardioidshaped antenna pattern is simulated according to convention and is saved in a. Nov 17, 2014 the data for a polar plot is given in polar coordinates, which is given as rtheta, where r is the distance from the origin center of the plot and theta is the angle from a reference angle, such as north or conversely the positive horizontal axis of overlaid cartesian coordinates. This function also allows the user to slice the data and see it. For the past two days i have been trying to figure out how to scale the color of a 3d plot antenna radiation pattern with matplotlib. Follow 63 views last 30 days roman klimovich on 20 nov 2017. This matlab function plots the 3d radiation pattern of an antenna magnitude, mage over the specified phi and theta angle vectors.
Sep 02, 2017 antenna radiation plots can be quite complex because, in the real world they are threedimensional. Radiation pattern plotting learn more about polar plot. Plot response pattern of array matlab mathworks india. Plot radiation pattern matlab patterncustom mathworks italia. Plot 2d phi slice of the antenna in polar coordinates. Plot radiation pattern matlab patterncustom mathworks. This matlab function plots the 3d radiation pattern of the antenna or array object. Plot 3d radiation pattern on polar coordinate system. Interpolate the original radiation pattern at these specified pairs. How to plot an antenna pattern in a polar diagram in octave.
Format of the plot, using one of line, polar, or uv. The far field radiation pattern may be represented graphically as a plot of one of a number of related variables, including. This matlab function plots the 3d radiation pattern of an antenna magnitude, mage over the specified. This book will help you build a foundation in machine learning using matlab for beginners. Set this value to false to plot the response pattern without normalizing it. This program plots 3d radiation pattern of a dipole antenna. Now this is a good visualization, but i want to plot in polar axes, so it will look more like this.
Polar theta, rho makes a plot using polar coordinates of the angle theta, in radians, versus the radius rho. Plot 3d array gain of 4x4 planar antenna pattern matlab. Polar diagrams are used for plotting the radiation patterns of antennas as well as other applications like measuring the sensitivity of microphones in different directions, etc. Polar theta,rho,s uses the linestyle specified in string s. Simple matlab program for computation of antenna array patterns and. Antenna toolbox uses the method of moments mom to compute port properties such as impedance, surface properties such as current and charge distribution, and field properties such as the nearfield and farfield radiation pattern. If mage is a matrix, it should be of size phi x theta. To visualize just 2d polar data use the polarpattern function.
Plot antenna radiation pattern on map matlab pattern. To plot 3d field data, use the patterncustom function. Main, back, and side lobe data matlab mathworks india. Mathworks is the leading developer of mathematical computing software for engineers and scientists. Draw a polar plot from cartesian plot of gain function.
May 27, 2017 matlab programme for the radiation pattern. This matlab function returns a structure, l, defining the main, back, and side lobes of the antenna or array radiation pattern in the specified polar plot, p. Signal gain value dbi in a particular direction determines the color of the pattern. Use these plots when interactive data visualization or measurement is required. Finally,pressing the show plots button the two plots will be created. Plot radiation pattern matlab patterncustom mathworks france.