CPC H01P 5/184 (2013.01) [H01P 5/185 (2013.01); H01Q 3/2605 (2013.01); H01Q 3/267 (2013.01); H01Q 21/0006 (2013.01); H04B 17/12 (2015.01); H04B 17/21 (2015.01)] | 10 Claims |
1. A coupling device for a base station antenna, comprising:
a first coupler that includes a first main line and a first subline, the first main line and the first subline including a first interdigitated structure that is configured to increase coupling between the first main line and the first subline; and
a second coupler that includes a second main line and a second subline, the second main line and the second subline including a second interdigitated structure that is configured to increase coupling between the second main line and the second subline,
wherein the first subline and the second subline share a common segment, and
wherein first interdigitated structure and the second interdigitated structure are formed in the common segment.
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