US 12,244,051 B2
Ultra-small size broadband coupler
Ki Jin Kim, Hwaseong-si (KR); Kwang Ho Ahn, Yongin-si (KR); and Soo Chang Chae, Seongnam-si (KR)
Assigned to Korea Electronics Technology Institute, Seongnam-si (KR)
Filed by Korea Electronics Technology Institute, Seongnam-si (KR)
Filed on Jul. 29, 2022, as Appl. No. 17/877,165.
Claims priority of application No. 10-2021-0134584 (KR), filed on Oct. 12, 2021.
Prior Publication US 2023/0111667 A1, Apr. 13, 2023
Int. Cl. H01P 5/18 (2006.01); H01Q 7/00 (2006.01)
CPC H01P 5/186 (2013.01) [H01Q 7/00 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A Lange coupler comprising:
first lines which are formed in a spiral shape, and have a first port and a second port formed at one end thereof and have connection ends formed at the other end thereof; and
second lines which are formed in a spiral shape, and have connection ends formed at one end thereof to be connected to the connection ends of the first lines, and have a third port and a fourth port formed at the other end thereof,
wherein respective lengths of the first lines and the second lines are λ/8.