System object: phased.ConformalArray
Output responses of array elements
RESP = step(H,FREQ,ANG)
Starting in R2016b, instead of using the
step method to perform the operation defined by the System object™, you can call the object with arguments, as if it were a function. For example,
y = step(obj,x) and
y = obj(x) perform equivalent operations.
The object performs an initialization the first time the object is executed. This
initialization locks nontunable properties
and input specifications, such as dimensions, complexity, and data type of the input data.
If you change a nontunable property or an input specification, the System object issues an error. To change nontunable properties or inputs, you must first
release method to unlock the object.
Operating frequencies of array in hertz.
Directions in degrees.
Voltage responses of the phased array. The output depends on whether the array supports polarization or not.
Using the ConformalArray System object, construct an 8-element uniform circular array (UCA) of isotropic antenna elements. The radius of the array is one meter. Assume the operating frequency is 1 GHz and the wave propagation speed is the speed of light.
N = 8; azang = (0:N-1)*360/N-180; sCA = phased.ConformalArray(... 'ElementPosition',[cosd(azang);sind(azang);zeros(1,N)],... 'ElementNormal',[azang;zeros(1,N)]);
Get the element response at 35 degrees azimuth and 5 degrees elevation.
fc = 1e9; ang = [30;5]; resp = step(sCA,fc,ang)
resp = 8×1 1 1 1 1 1 1 1 1