INDEPENDENT AZIMUTH PATTERNS FOR SHARED APERTURE ARRAY ANTENNA

摘要

A multi-column antenna having ports for different sub-bands is provided. In one aspect, power dividers (46a, 46b) couple the sub-band ports to the columns (42) of radiating elements (43). At least one power divider is an un-equal power divider to allow a half-power beam width (HPBW) of one sub-band to be configured independently of the HPBW of the other sub-band. The ports may be combined at the radiating elements (43) by diplexers (48). According to another aspect, a multi-column antenna has a plurality of first sub-band ports and a plurality of second sub-band ports. Each of the first sub-band ports is coupled to one of the columns (62) by a first sub-band feed network. Each of the second sub-band ports is coupled to two of the columns (62) by a second sub-band feed network including a power divider (66a). The different sub-bands have different MIMO optimization of the same multi-column antenna.