A compact wideband dual-polarized microstrip antenna element for phased-arr
ay antennas is presented. The feeding lines are distributed on two layers,
which facilitate the design of complex antenna arrays. The antenna element
has a return loss greater than 10 dB, and an isolation between the input po
rts over 35 dB from 10.7 to 12.6 GHz. Also a four-element array is construc
ted and measured. (C) 2001 John Wiley & Sons, Inc.