LAUSR

A dual-polarized endfire array is presented in this paper for millimeter application. The substrate integrated mode-composite transmission line is introduced to exciting the dual-polarized radiation. Specially, the horizontal polarization is excited by the TEM-mode, while the vertical polarization is based on the TE10-mode. Two metal blocks sandwich the substrates to form a sandwich structure, and open-ended slot is designed on the block edge to construed complementary sources radiation. Benefiting from the wdieband feature of complementary sources, the proposed dual-polarized endfire array achieved a considerable bandwidth performance of 26.9% (24.8 GHz -32.5 GHz) based on the standard that both the voltage standing wave ratios of the two ports are less than 2. In terms with the key factor of dual-polarized antenna, isolation, measured results shows a high port isolation of over 36 dB and a cross-polarization discrimination rate of over 30 dB. The excellent dual-polarized performance gives the proposed endfire array the potential of application in millimeter wave mobile communications.