US 12,451,596 B2
Microstrip antenna, antenna array, radar, and vehicle
Kaijie Zhuang, Shanghai (CN); Shan Li, Shanghai (CN); Zhefan Chen, Shanghai (CN); Xuejuan Huang, Shanghai (CN); Chenwu Yu, Shanghai (CN); and Dian Wang, Shanghai (CN)
Assigned to CALTERAH SEMICONDUCTOR TECHNOLOGY (SHANGHAI) CO., LTD, Shanghai (CN)
Filed by CALTERAH SEMICONDUCTOR TECHNOLOGY (SHANGHAI) CO., LTD, Shanghai (CN)
Filed on Feb. 10, 2023, as Appl. No. 18/108,044.
Application 18/108,044 is a continuation of application No. PCT/CN2022/117041, filed on Sep. 5, 2022.
Claims priority of application No. 202111282192.6 (CN), filed on Nov. 1, 2021; application No. 202210395195.9 (CN), filed on Apr. 14, 2022; and application No. 202210638650.3 (CN), filed on Jun. 7, 2022.
Prior Publication US 2023/0198134 A1, Jun. 22, 2023
Int. Cl. H01Q 1/32 (2006.01); G01S 13/931 (2020.01); H01Q 1/38 (2006.01)
CPC H01Q 1/3233 (2013.01) [G01S 13/931 (2013.01); H01Q 1/38 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A microstrip antenna, comprising: a dielectric layer, a metal layer disposed at a side of the dielectric layer, and a ground plane layer disposed at a side of the dielectric layer away from the metal layer, wherein:
the metal layer comprises a first radiation patch and a feeding portion;
the first radiation patch at least comprises a long side edge, and a short side edge adjacent to the long side edge, a length of the long side edge is determined based on an operating wavelength of the microstrip antenna, a length of the short side edge is less than the length of the long side edge;
the feeding portion is coupled between a center position of the long side edge and a short side edge of the first radiation patch, and the feeding portion is configured to transmit a high frequency signal to the first radiation patch or to transmit a space radiation signal received by the first radiation patch; and
the microstrip antenna further comprises a second radiation patch provided at a single side of the first radiation patch and fed by the first radiation patch in an inductive coupling mode, wherein the second radiation patch is disposed at a side of the short side edge of the first radiation patch and spaced from the short side edge by a preset distance, and sizes of the second radiation patch and the first radiation patch are identical, wherein the short side edge disposed with the second radiation patch is away from the feeding portion.