#### chunweimin

##### Junior Member level 1

**Chebyshev Array**

Hi,

I am working on linear array analysis and try to use the Chebyshev polynomials to achieve a low side-lobe pattern of the array. I have calculated the excitation coefficients of each element. When it comes to implementation using unequal power splitters, the equations require the "power ratio" in order to calculate the corresponding impedances of the lines. Do I need to square the excitation coefficients before I substitute them into the impedance equations or I apply them directly? Thanks very much for your help.

Chunwei