US 12,451,619 B2
Broadband millimeter wave circularly polarized antenna element, single-mode array and dual-mode array
Zhixiang Huang, Hefei (CN); Chao Wang, Hefei (CN); Minquan Li, Hefei (CN); Guanghui Xu, Hefei (CN); Guoda Xie, Hefei (CN); Kaikun Niu, Hefei (CN); and Xingang Ren, Hefei (CN)
Assigned to ANHUI UNIVERSITY, Anhui (CN)
Filed by Anhui University, Hefei (CN)
Filed on Jun. 20, 2023, as Appl. No. 18/211,942.
Claims priority of application No. 202310200743.2 (CN), filed on Mar. 6, 2023.
Prior Publication US 2024/0305014 A1, Sep. 12, 2024
Int. Cl. H01Q 21/24 (2006.01); H01Q 9/28 (2006.01)
CPC H01Q 21/24 (2013.01) [H01Q 9/285 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A broadband millimeter wave circularly polarized antenna element, comprising: a first dielectric substrate, a second dielectric substrate, and a metal ground layer located between the first dielectric substrate and the second dielectric substrate;
wherein a microstrip feeder is arranged on a lower surface of the second dielectric substrate; a coupling slot is etched on the metal ground layer, two metallized vias are provided on the first dielectric substrate, and a metal strip is tiled on an upper surface of the first dielectric substrate, the two metallized vias are located at outer edges of both sides of the coupling slot and are in contact with the coupling slot, one end of the metal strip is in contact with one of the metallized vias, the other end of the metal strip is in contact with another metallized via, thus making the coupling slot equivalent to one magnetic dipole, and the two metallized vias and the metal strip equivalent to another magnetic dipole as a whole;
two L-shaped parasitic patches are tiled on the first dielectric substrate, and the two L-shaped parasitic patches are located on both sides of the metal strip and are rotationally symmetrical about a center point of the upper surface of the first dielectric substrate;
wherein four hexagonal parasitic patches are also tiled on the first dielectric substrate, and the four hexagonal parasitic patches are located on both sides of the metal strip and are rotationally symmetrical about the center point of the upper surface of the first dielectric substrate.