Advanced Member level 3
I am reading paper about beam steering. I tried to simulate two patch array with parallel feeding. If patches have equal phase, S11 looks good. But if i add feeding line length for one of the patches, then there is very strange result in s11, it becomes worse, less than 10dB magnitude. Although current distribution seems good, just not inphase. Am i doing something wrong or unequal phase patch array cant be analyzed using S11 value? Also i read other paper with series fed patch array with fixed angle steering, their simulation result showed nice result. I tried series fed two patch array too, and again S11 becomes worse if i make longer feeding line between patches. But current distribution looks nice to me. Where i am wrong?