Feed coupling mitigation strategies for the realization of ultrawideband feed arrays
AssigneeCheshir Industries Inc.
InventorsNicolas Garcia, Nicholas Estes
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Abstract
Wideband antenna elements exhibit strong coupling when formed into an array, which normally degrades the impedance bandwidth, radiation pattern, and efficiency of the feed antennas. Various methods are provided herein to mitigate or reduce this coupling. For example, designing an array such that not all antennas support the lower frequency operation mitigates coupling at low frequencies where coupling is most significant. Alternatively, embedding the feeds into a high-refractive-index medium increases the electrical distance between feeds while the physical separation is kept constant.
Claims14
An antenna comprising:
- a feed array and
- a quasi-optical component, wherein the feed array further comprises:
- a plurality of array elements;
- and
- a structure configured to mitigate element-to-element coupling between the array elements;
- and further such that the feed array and quasi-optical component are configured such that radiation produced by any given element of the feed array is reshaped by the quasi-optical component to:
- increase a directivity of the radiation produced by that given element;
- and/or
- change an angular direction of a maximum of the radiation produced by that given element.
Dependencies are inferred from the claim text.