CPC H01Q 21/0043 (2013.01) [H01Q 1/424 (2013.01); H01Q 5/25 (2015.01); H01Q 5/314 (2015.01)] | 22 Claims |
1. A modular wideband antenna comprising:
a ground plane;
a first antenna element and a second antenna element disposed on a first surface of a substrate;
a first portion of a two-layer feed balun disposed on the first surface of the substrate, the first portion of the two-layer feed balun being electrically coupled to the first and second antenna elements, and the first portion of the two-layer feed balun being electrically coupled to the ground plane;
a second portion of the two-layer feed balun disposed on a second surface of the substrate, the second portion of the two-layer feed balun being electrically coupled to a signal feed, and the second portion of the two-layer feed balun being capacitively coupled to the first portion of the two-layer feed balun;
a first coupling capacitance and a second coupling capacitance disposed on the second surface of the substrate, the first coupling capacitance being capacitively coupled to the first antenna element, and the second coupling capacitance being capacitively coupled to the second antenna element; and
a first grounding post and a second grounding post, the first grounding post being electrically coupled to the first coupling capacitance and the ground plane, the second grounding post being electrically coupled to the second coupling capacitance and the ground plane.
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