US 11,990,693 B2
Wireless communication device and antenna configuration method
Ken Miura, Kanagawa (JP)
Assigned to NEC Platforms, Ltd., Kanagawa (JP)
Appl. No. 17/423,780
Filed by NEC Platforms, Ltd., Kawasaki (JP)
PCT Filed Nov. 26, 2019, PCT No. PCT/JP2019/046174
§ 371(c)(1), (2) Date Jul. 16, 2021,
PCT Pub. No. WO2020/158133, PCT Pub. Date Aug. 6, 2020.
Claims priority of application No. 2019-017076 (JP), filed on Feb. 1, 2019.
Prior Publication US 2022/0123475 A1, Apr. 21, 2022
Int. Cl. H01Q 9/42 (2006.01); H01Q 1/24 (2006.01); H01Q 19/02 (2006.01); H01Q 21/28 (2006.01)
CPC H01Q 9/42 (2013.01) [H01Q 1/241 (2013.01); H01Q 19/02 (2013.01); H01Q 21/28 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A wireless communication device having an antenna configuration in which an omnidirectional antenna element connected to a feeding point is arranged on a printed board, wherein a ground plane connected to a ground potential is formed on the printed board so as to cover an area other than a part where an electronic circuit is formed on the printed board, a parasitic antenna element is arranged at a position adjacent to the omnidirectional antenna element, in a state of being parallel to the omnidirectional antenna element, and the parasitic antenna element is arranged at a position where the parasitic antenna element can receive radio waves reflected on the ground plane, an entire length of the parasitic antenna element is set to be a length that is (½) of a wavelength of radio waves handled by the omnidirectional antenna element,
the parasitic antenna element, at a position by the ground plane and where the parasitic antenna element reaches an edge of the printed board, is bent at a right angle in a direction of approaching the printed board, and
a center position of the parasitic antenna element in a length direction is set at a position where the parasitic antenna element can receive the radio waves reflected on the ground plane.