US 11,984,666 B2
Radiation element and bandwidth extension structure
Jiankai Xu, Shanghai (CN); Ke Chen, Shanghai (CN); Chunhua Zhou, Shanghai (CN); Jing Liu, Shanghai (CN); and Jihong Sun, Shanghai (CN)
Assigned to RFS Technologies, Inc., Meriden, CT (US)
Appl. No. 16/758,762
Filed by RFS Technologies, Inc., Meriden, CT (US)
PCT Filed Nov. 2, 2018, PCT No. PCT/CN2018/113679
§ 371(c)(1), (2) Date Apr. 23, 2020,
PCT Pub. No. WO2019/091340, PCT Pub. Date May 16, 2019.
Claims priority of application No. 201711098031 (CN), filed on Nov. 9, 2017.
Prior Publication US 2021/0184352 A1, Jun. 17, 2021
Int. Cl. H01Q 5/307 (2015.01); H01Q 1/24 (2006.01)
CPC H01Q 5/307 (2015.01) [H01Q 1/246 (2013.01)] 27 Claims
OG exemplary drawing
 
1. An antenna device, comprising:
a plurality of radiating arms;
a plurality of metal plates that are U-shaped or L-shaped, wherein the plurality of metal plates are configured for capacitively coupling to the plurality of radiating arms, respectively; and
a plurality of insulation structures respectively located between the plurality of metal plates and the plurality of radiating arms and configured to provide capacitive coupling between the plurality of metal plates and the plurality of radiating arms, respectively, and inhibit conductive coupling between the plurality of metal plates and the plurality of radiating arms, respectively,
wherein the plurality of radiating arms are each configured to:
operate in a first frequency band when not capacitively coupled to the plurality of metal plates, respectively; and
operate in a second frequency band that includes, and is larger than, the first frequency band when capacitively coupled to the plurality of metal plates, respectively.