beam squint in series fed array can be reduced by feeding the array with 180 degree phase shift,like rat race coupler

Thank you , Aarthi. My structure is a patch array , which is only series feed. I want to make a compact structure. So do you have any suggestions by varying any design parameters of the array ? ( For eg: feed line length variation among the patch elements)

I have 8 ports for feeding. Also, I want high gain above 20 dB. So any other easy suggestions to avoid beam squint ?

good work

When you mention feeding at 8 ports probably your structure is series compensated feeding(shunt connected series feed), therefore asymmetrical T can avoid squint. When creating asymmetrical T feeding network you can use u shaped structures in one arm to make it more compact. But remember, series compensated feeding has more line loss compared to normal series feeding. More bends and artifacts in T network will worsen it. Also, there are other phase correction techniques available but that will increase the complexity of the design.

All very useful information