US 12,334,650 B2
Multi-resonant antenna
Keishi Kosaka, Tokyo (JP)
Assigned to JAPAN AVIATION ELECTRONICS INDUSTRY, LIMITED, Tokyo (JP)
Filed by JAPAN AVIATION ELECTRONICS INDUSTRY, LIMITED, Tokyo (JP)
Filed on Jan. 11, 2022, as Appl. No. 17/573,285.
Claims priority of application No. 2021-026166 (JP), filed on Feb. 22, 2021.
Prior Publication US 2022/0271429 A1, Aug. 25, 2022
Int. Cl. H01Q 5/371 (2015.01); H01Q 1/38 (2006.01)
CPC H01Q 5/371 (2015.01) [H01Q 1/38 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A multi-resonant antenna comprising:
a substrate having a pattern formed thereon;
a main antenna; and
an additional radiation element,
wherein:
the main antenna comprises a main portion, which forms a split ring, and a feeding portion, which branches off from the main portion;
the additional radiation element extends outward of the main antenna from the main antenna;
the main antenna forms a first resonance portion;
the first resonance portion comprises an LC resonance circuit;
the additional radiation element forms at least a part of a second resonance portion different from the first resonance portion;
the main portion of the main antenna is formed of a combination of (i) at least one part of the pattern formed on the substrate and (ii) a metal member which is distinct from the substrate and mounted on the substrate, at least one portion of the metal member being separated from the substrate.