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A manifold table is basically the response of all individual elements of an array for the signals coming from all the angles. i.e keep the array in the centre (say) and take a source (basically a signal), now rotate the source from 0 to 360 degrees (or as reqd.) and save the responses obtained...
hi, i too am wrkng with antenna arrays (not hardware though)
I need help in simulating a random antenna array. Pls help.
my problem statement is:
https://www.edaboard.com/threads/195100/#post817375
thnx
How should i create the manifold table for arbitrary array? array factor is given as
AF(Θ,φ)=exp(jβ(x*sinΘcosφ+y*sinΘsinφ))
Θ=elevation
φ=azimuth
for creating manifold for azimuth, i keep Θ=90°, but when elevation manifold is created, if i keep φ=0°, y component goes off, when φ=90°, x component...
Well, first you just need to define the array factor for circular array. LMS and RLS basically give weights that wil help in removing interference, noise or whatever.
The array factor for a Uniform circular array is
AF(theta, phi) = exp(j*(2*pi/lambda)*radius*sin(theta)*cos(phi-phi_n))
theta is...
For what kind of array antenna, linear, planar or circular?
---------- Post added at 07:41 ---------- Previous post was at 07:37 ----------
In case of linear array with m-elements,
u can try this
AF=exp(-j*(2*pi/lambda)*d*sin(AOA)*[M-1]);
create a manifold table and multiply AF with it...
Unable to obtain sidelobe suppression in a Uniform Circular Array.
The Taylor Coefficient is defined as
Fm = Jo(pi*Um) *sqrt[ (1-Um/Zn^2)/(1-Um/Un^2)];
m=no. of elements
n=side lobes
Further: Please read on Taylor Distributions for Circular Apertures
Pls Reply.
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