US 12,278,435 B2
Miniature antenna with omnidirectional radiation field
Matthew Magill, Belfast (GB); and Gareth Conway, Portadown (GB)
Assigned to THE QUEEN'S UNIVERSITY OF BELFAST, Belfast (GB)
Appl. No. 18/021,671
Filed by The Queen's University of Belfast, Belfast (GB)
PCT Filed Aug. 16, 2021, PCT No. PCT/EP2021/072762
§ 371(c)(1), (2) Date Feb. 16, 2023,
PCT Pub. No. WO2022/038102, PCT Pub. Date Feb. 24, 2022.
Claims priority of application No. 2012970 (GB), filed on Aug. 19, 2020.
Prior Publication US 2023/0318186 A1, Oct. 5, 2023
Int. Cl. H01Q 9/04 (2006.01)
CPC H01Q 9/0442 (2013.01) 20 Claims
OG exemplary drawing
 
1. An antenna comprising:
a radiating structure;
a ground plane; and
a feed structure coupled to the radiating structure,
wherein the radiating structure comprises a plurality of slots located around an inner portion of the radiating structure, the slots being arranged symmetrically about at least one axis of the radiating structure, the slots being arranged to form a plurality of rings around said inner portion, each ring comprising one or more of said slots;
wherein each ring includes at least one intra-ring gap between adjacent slot ends, and wherein the, or each, slot of any one of said rings is arranged with respect to the, or each, slot of the, or each, adjacent ring such that the respective intra-ring gaps of adjacent rings are not aligned along said at least one axis of the radiating structure.