Patent ID: 11949174
Assignee: ANHUI UNIVERSITY
Field: Telecommunications (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A broadband 5G circularly polarized filtering antenna, comprising:
a reflecting plate, a first dielectric substrate, a second dielectric substrate, a third dielectric substrate and a fourth dielectric substrate, wherein the reflecting plate, the first dielectric substrate and the second dielectric substrate are arranged from bottom to top and are filled with air in middle, the third dielectric substrate and the fourth dielectric substrate are installed between the first dielectric substrate and the second dielectric substrate, and the third dielectric substrate and the fourth dielectric substrate are arranged in parallel, an upper surface of the first dielectric substrate is provided with a ground with a chair-like groove, a lower surface of the first dielectric substrate is provided with a feed line, the feed line is vertically aligned with a center of the third dielectric substrate, the chair-like groove on the ground with the chair-like groove comprises a first groove, wherein the first groove is arranged between the third dielectric substrate and the fourth dielectric substrate;
the third dielectric substrate is provided with a first metal transmission strip group, and the fourth dielectric substrate is provided with a second metal transmission strip group, wherein the first metal transmission strip group and the second metal transmission strip group are symmetrically arranged, the first metal transmission strip group and the second metal transmission strip group are in contact with the ground with the chair-like groove, the first groove is arranged between the first metal transmission strip group and the second metal transmission strip group and parallel to the first metal transmission strip group and the second metal transmission strip group;
the first metal transmission strip group comprises a first metal transmission strip, a second metal transmission strip and a third metal transmission strip arranged at equal intervals;
the second metal transmission strip group comprises a fourth metal transmission strip, a fifth metal transmission strip and a sixth metal transmission strip arranged at equal intervals; and
an upper surface of the second dielectric substrate is provided with a first rectangular radiating unit and a second rectangular radiating unit, wherein the first rectangular radiating unit is connected with the first metal transmission strip group, the second rectangular radiating unit is connected with the second metal transmission strip group, and the first rectangular radiating unit and the second rectangular radiating unit are symmetrically arranged to form a dipole pair.