US 12,218,443 B2
Wireless communication device and wireless communication method
Ken Miura, Kanagawa (JP)
Assigned to NEC Platforms, Ltd., Kanagawa (JP)
Appl. No. 17/641,202
Filed by NEC Platforms, Ltd., Kawasaki (JP)
PCT Filed Jul. 2, 2020, PCT No. PCT/JP2020/026062
§ 371(c)(1), (2) Date Mar. 8, 2022,
PCT Pub. No. WO2021/059651, PCT Pub. Date Apr. 1, 2021.
Claims priority of application No. 2019-174873 (JP), filed on Sep. 26, 2019.
Prior Publication US 2022/0344824 A1, Oct. 27, 2022
Int. Cl. H01Q 9/42 (2006.01); H01Q 1/22 (2006.01); H01Q 19/02 (2006.01); H01Q 1/24 (2006.01)
CPC H01Q 9/42 (2013.01) [H01Q 1/2291 (2013.01); H01Q 19/021 (2013.01); H01Q 1/243 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A wireless communication device comprising:
a printed board having a substrate surface;
a ground plane having a plate shape that is disposed on the substrate surface, connected to a ground potential, and is parallel to the substrate surface;
an omnidirectional antenna that is disposed alongside the ground plane on the substrate surface in one direction in a plane parallel to the substrate surface, and is caused to emit radio waves by being supplied with power; and
a parasitic antenna that is disposed away from the ground plane in a direction perpendicular to the substrate surface and resonates with the omnidirectional antenna that has been supplied with power,
wherein the parasitic antenna has a plate shape, and
wherein a plate surface of the parasitic antenna is parallel to the substrate surface and opposed to the substrate surface.