US 12,294,157 B2
Dual-frequency antenna and electronic device
Xiaoqiang Yang, Beijing (CN); Zhifeng Zhang, Beijing (CN); Yiming Wang, Beijing (CN); Cuiwei Tang, Beijing (CN); Wei Zhao, Beijing (CN); Lu Chen, Beijing (CN); and Zixiang Lin, Beijing (CN)
Assigned to Beijing BOE Sensor Technology Co., Ltd., Beijing (CN); and BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
Appl. No. 18/025,682
Filed by Beijing BOE Sensor Technology Co., Ltd., Beijing (CN); and BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
PCT Filed Jun. 15, 2022, PCT No. PCT/CN2022/098865
§ 371(c)(1), (2) Date Mar. 10, 2023,
PCT Pub. No. WO2023/240481, PCT Pub. Date Dec. 21, 2023.
Prior Publication US 2024/0291169 A1, Aug. 29, 2024
Int. Cl. H01Q 21/30 (2006.01); H01Q 3/36 (2006.01); H01Q 5/321 (2015.01); H01Q 15/14 (2006.01); H01Q 21/06 (2006.01)
CPC H01Q 21/30 (2013.01) [H01Q 3/36 (2013.01); H01Q 5/321 (2015.01); H01Q 15/14 (2013.01); H01Q 21/065 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A dual-frequency antenna, comprising a first antenna unit and a second antenna unit opposite to each other, and a frequency selective surface between the first antenna unit and the second antenna unit; wherein a frequency which the first antenna unit operates is within a first frequency band; a frequency which the second antenna unit operates is within a second frequency band;
the frequency selective surface is configured to reflect an electromagnetic wave of the first frequency band and to transmit an electromagnetic wave of the second frequency band;
the first antenna unit is configured to receive the electromagnetic wave of the first frequency band, which is then reflected by the frequency selective surface; and
the second antenna unit is configured to receive the electromagnetic wave of the second frequency band transmitted by the frequency selective surface and to reflect the electromagnetic wave of the second frequency band;
wherein the first antenna unit comprises at least one first sub-array; the second antenna unit comprises at least one second sub-array;
each first sub-array comprises a first dielectric substrate and a second dielectric substrate opposite to each other, a first phase adjusting structure between the first dielectric substrate and the second dielectric substrate, and a first radiation portion on the first dielectric substrate; the frequency selective surface is arranged on a side of the second dielectric substrate away from the first dielectric substrate; the first phase adjusting structure is electrically connected to the first radiation portion, and configured to adjust a phase of the electromagnetic wave of the first frequency band received by the first radiation portion, and radiate the phase-shifted electromagnetic wave through the first radiation portion; and
each second sub-array comprises a third dielectric substrate and a fourth dielectric substrate opposite to each other, a second phase adjusting structure between the third dielectric substrate and the fourth dielectric substrate, a second radiation portion on the third dielectric substrate, and a reference electrode layer on a side of the fourth dielectric substrate away from the third dielectric substrate; the third dielectric substrate is on a side of the frequency selective surface away from the second dielectric substrate; the second phase adjusting structure is electrically connected to the second radiation portion, and configured to adjust a phase of the electromagnetic wave of the second frequency band received by the second radiation portion, and radiate the phase-shifted electromagnetic wave through the second radiation portion.