Experimental results illustrating performance limitations and design tradeoffs in probe-fed microstrip-patch element phased arrays

w i th cu r ren t t heo ry . The performance parameters t h a t were i n volved included element act ive impedance as a func t ion o f scan angle and frequency and corresponding coand c ross-po la r ized embedded element patterns. The performance trends and l i m i t a t ions eventual ly impact the dec is ions on the des ign conf igura t ion such as s ing le or dual probes, subst rate mater ia l , patch height and dimensions, l a t t i c e spacing, and probe feed and matching network.