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De-tuning tolerant loop antenna

United States Patent

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August 25, 2020
View the Complete Patent at the US Patent & Trademark Office
A loop antenna is described herein that is suitable for operation in free space or in proximity to a ground plane. The loop antenna comprises a looped conductive element with a gap formed therein and a tab extending toward the gap. A length of the tab of the loop antenna is selected such that a detuning loss of the loop antenna from operation in free space to operation in proximity to a ground plane is low. In an exemplary embodiment, the length of the tab is selected such that a reactance of the loop antenna in free space is within a threshold level of a reactance of the loop antenna when the antenna is in proximity to a ground plane.
16/ 127,577
September 11, 2018
H01Q 7/00 (20060101)G06K 19/07 (20060101)H01Q 1/24 (20060101)H01Q 1/22 (20060101)
STATEMENT OF GOVERNMENTAL INTEREST This invention was made with Government support under Contract No. DE-NA0003525 awarded by the United States Department of Energy/National Nuclear Security Administration. The U.S. Government has certain rights in the invention.