US 12,494,579 B2
Low-profile dual-band aperture-shared antenna based on structure reusing and communication device thereof
Yuehui Cui, Guangzhou (CN); and Quan Xue, Guangzhou (CN)
Assigned to SOUTH CHINA UNIVERSITY OF TECHNOLOGY, Guangzhou (CN)
Filed by SOUTH CHINA UNIVERSITY OF TECHNOLOGY, Guangzhou (CN)
Filed on Jan. 1, 2025, as Appl. No. 19/007,509.
Application 19/007,509 is a continuation of application No. PCT/CN2024/105431, filed on Jul. 15, 2024.
Claims priority of application No. 202311218240.4 (CN), filed on Sep. 21, 2023.
Prior Publication US 2025/0141104 A1, May 1, 2025
Int. Cl. H01Q 5/385 (2015.01); H01Q 5/48 (2015.01); H01Q 15/00 (2006.01); H01Q 21/06 (2006.01); H01Q 25/00 (2006.01)
CPC H01Q 5/385 (2015.01) [H01Q 5/48 (2015.01); H01Q 15/0013 (2013.01); H01Q 21/062 (2013.01); H01Q 25/001 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A low-profile dual-band aperture-shared antenna based on structure reusing, comprising a metasurface structure, a high-frequency antenna radiating element and a reflecting plate, wherein the high-frequency antenna radiating element is arranged above the reflecting plate, the metasurface structure is arranged above the high-frequency antenna radiating element, the metasurface structure is arranged on a first surface of a dielectric substrate, and rectangular parasitic strips are arranged on a second surface of the dielectric substrate, and the metasurface structure and the rectangular parasitic strips form a low-frequency antenna radiating element;
the rectangular parasitic strips are used to restore a gain of the high-frequency antenna radiating element at 2-2.2 GHz;
the metasurface structure is composed of M×N metasurface elements arranged in an array, wherein an array shape is square, and each of the metasurface elements is composed of a square ring and a square patch embedded in the square ring;
the metasurface elements comprise first metasurface elements and second metasurface elements, wherein metasurface elements at four corners of the square are the first metasurface elements, and metasurface elements at other positions of the square are the second metasurface elements; and
the metasurface structure uses a differential feed mode, each of the first metasurface elements is connected with an inner core of a coaxial line, and the reflecting plate is connected with an outer core of the coaxial line to realize dual-polarization radiation.