Binomial Antenna Array

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rf997

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Hello, I am trying to make a 3x3 patch antenna array. But I need to feed the antenna array with binomial coefficients. For example, if there was a 1x3 antenna array, I had to feed it with amplitudes of 1,2,1 according to the 3rd line of Pascal's triangle. However, I could not understand how to feed the 3x3 antenna array.
 

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Thank you, but what I want to ask is what should be the feed amplitudes for each element of my antenna array? For example, while the feed amplitudes should be [1 4 6 4 1] for a 1*5 binomial antenna array, what should they be for a 3*3 binomial antenna array?
 

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Pascal's triangle (the binomial coefficients) in high-order limit becomes a Gaussian curve,
proportional to exp(-c*r^2 ).
Do you really need integers for the elemental amplitudes?
Do you really need a 3x3 square (as opposed to hexagonal array or irregular) layout?
 

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rf997 said:
For example, while the feed amplitudes should be [1 4 6 4 1] for a 1*5 binomial antenna array, what should they be for a 3*3 binomial antenna array?
Click to expand...
Maybe this calculator can help you to test coefficients:

CALCULATOR

PARAMETERS Frequency: MHz Number of elements: 1 2 3 4 5 6 7 8 9 10 Inter-element distance: mm Antenna e...
antennaarraycalculator.blogspot.com
It supports binomial and user defined values.

As far as I understand pattern calculation, you can reduce your 3*3 array to one row when calculating coefficients.
 

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