Wideband tapered antenna with parasitic grounding element

摘要

Methods and systems for extending a bandwidth of a wideband antenna of a user device are described. A wideband antenna includes a parasitic element coupled to ground and a single radio frequency (RF) input coupled to an antenna structure at a first point. The antenna structure comprises a tapered side that tapers away from the first point to create an increasingly larger gap between the antenna structure and ground. The antenna structure is configured to operate as a feeding structure to the parasitic element, the parasitic element not being conductively connected to the antenna structure.

主权项

1. An apparatus comprising:
a single radio frequency (RF) input; a tapered antenna structure coupled to the single RF input, wherein the tapered antenna structure is configured to provide a plurality of resonant modes of a wideband antenna; and a parasitic ground element coupled to a ground plane, the parasitic ground element is configured to provide another resonant mode of the wideband antenna and is configured to provide impedance matching to the tapered antenna structure, wherein the tapered antenna structure comprises:
a first side that extends away from a first point where the tapered structure is coupled to the single RF input along a first axis that is perpendicular to the ground plane to a third point at a distal end of the first side, the distal end being farthest from the single RF input;a tapered side that tapers away from the first point towards a second point at an angle relative to the first axis;a third side that extends away from the third point along a second axis that is parallel to the ground plane to a fourth point;an arm portion that extends away from the third point along the second axis in an opposite direction than the third side relative to the first axis, wherein the arm portion does not physically connect to the ground plane, wherein a rectangular element of the parasitic ground element is disposed along a third axis parallel to the second axis to form a first gap between the arm portion and the rectangular element and a second gap between the third side and the rectangular element; and an extension portion that extends from the fourth point on the third side away from the ground plane and up to or beyond the third axis of the rectangular element, the extension portion forming a third gap between the extension portion and the rectangular element.