Antenna device, wireless communication device, and electronic device

Patent metadata

Field	Value
Publication number	US-2016352000-A1
Application number	US-201615232289-A
Country	US
Kind code	A1
Filing date	Aug 9, 2016
Priority date	Mar 7, 2014
Publication date	Dec 1, 2016
Grant date	—

Abstract

An antenna apparatus includes a dielectric substrate, a feed element, a front array, and side arrays. The feed element, front array, and side arrays are formed on the dielectric substrate. The antenna apparatus includes mounting pads on the dielectric substrate, for coupling the antenna apparatus to another substrate by means of soldering. A part of the mounting pads are formed in a region located in a first direction when viewed from the feed element and front array, with a part of parasitic elements of the side arrays being interposed between these mounting pads and the feed element and front array. The other part of the mounting pads are formed in a region in a second direction when viewed from the feed element and front array, with another part of the parasitic elements of the side arrays being interposed between these mounting pads and the feed element and front array.

First claim

What is claimed is:

1 . An antenna apparatus comprising:
a dielectric substrate; a front array including:
a feed element formed on the dielectric substrate and offering one radiation direction; and
a plurality of parasitic elements formed, on the dielectric substrate, in a region located in the radiation direction when viewed from the feed element, wherein the plurality of the parasitic elements configures a plurality of front sub-arrays such that each of the front sub-arrays includes a plurality of the parasitic elements arrayed along the radiation direction, and wherein the front sub-arrays are disposed in parallel with each other along the radiation direction such that, in any adjacent two of the front sub-arrays, each of the parasitic elements of one of the two is close to a corresponding one of the parasitic elements of the other of the two;
a first side array including
a plurality of parasitic elements formed, on the dielectric substrate, in a region located in a first direction orthogonal to the radiation direction when viewed from the feed element and the front array, the plurality of the parasitic elements of the first side array being arrayed substantially along the radiation direction;
a second side array including
a plurality of parasitic elements formed, on the dielectric substrate, in a region located in a second direction opposite to the first direction when viewed from the feed element and the front array, the plurality of the parasitic elements of the second side array being arrayed substantially along the radiation direction;
at least one first mounting pad disposed, on the dielectric substrate, in a region located in the first direction when viewed from the feed element and the front array, for coupling the antenna apparatus to a different substrate by soldering; and at least one second mounting pad disposed, on the dielectric substrate, in a region located in the second direction when viewed from the feed element and the front array, for coupling the antenna apparatus to the different substrate by soldering, wherein a part of the plurality of the parasitic elements of the first side array is disposed between the first mounting pad and both the feed element and the front array, and a part of the plurality of the parasitic elements of the second side array is disposed between the second mounting pad and both the feed element and the front array.

2 . The antenna apparatus according to claim 1 , wherein the dielectric substrate includes a first surface and a second surface, the parasitic elements of the first and second side arrays are disposed on the first surface, and the first and second mounting pads are disposed on the second surface.

3 . The antenna apparatus according to claim 1 , wherein, in each of the first and second side arrays, the plurality of the parasitic elements of the side array configures a plurality of side sub-arrays disposed in parallel with each other substantially along the radiation direction, and
each of the side sub-arrays includes a plurality of the parasitic elements of the side array, the parasitic elements being arrayed substantially along the radiation direction.

4 . The antenna apparatus according to claim 2 , wherein, in each of the first and second side arrays, the plurality of the parasitic elements of the side array configures a plurality of side sub-arrays disposed in parallel with each other substantially along the radiation direction, and
each of the side sub-arrays includes a plurality of the parasitic elements of the side array, the parasitic elements being arrayed substantially along the radiation direction.

5 . The antenna apparatus according to claim 3 , wherein, the dielectric substrate includes an edge having a shape providing intersections with lines along the side sub-arrays such that an equiphase surface of an electromagnetic wave transmitted and received by the antenna apparatus coincides substantially with a reference plane, the reference plane being orthogonal to the radiation direction and located in the radiation direction when viewed from the dielectric substrate, a distance from the reference plane to each of the intersections increasing at a greater distance from both the feed element and the front array to a corresponding one of the side sub-arrays.

6 . The antenna apparatus according to claim 4 , wherein, the dielectric substrate includes an edge having a shape providing intersections with lines along the side sub-arrays such that an equiphase surface of an electromagnetic wave transmitted and received by the antenna apparatus coincides substantially with a reference plane, the reference plane being orthogonal to the radiation direction and located in the radiation direction when viewed from the dielectric substrate, a distance from the reference plane to each of the intersections increasing at a greater distance from both the feed element and the front array to a corresponding one of the side sub-arrays.

7 . The antenna apparatus according to claim 3 , wherein, the plurality of the side sub-arrays of each of the first and second side arrays is disposed such that, in any adjacent two of the side sub-arrays, gaps between the parasitic elements of one of the two are positioned in a staggered arrangement with gaps between the parasitic elements of the other.

8 . The antenna apparatus according to claim 4 , wherein, the plurality of the side sub-arrays of each of the first and second side arrays is disposed such that, in any adjacent two of the side sub-arrays, gaps between the parasitic elements of one of the two are positioned in a staggered arrangement with gaps between the parasitic elements of the other.

9 . The antenna apparatus according to claim 5 , wherein, the plurality of the side sub-arrays of each of the first and second side arrays is disposed such that, in any adjacent two of the side sub-arrays, gaps between the parasitic elements of one of the two are positioned in a staggered arrangement with gaps between the parasitic elements of the other.

10 . The antenna apparatus according to claim 6 , wherein, the plurality of the side sub-arrays of each of the first and second side arrays is disposed such that, in any adjacent two of the side sub-arrays, gaps between the parasitic elements of one of the two are positioned in a staggered arrangement with gaps between the parasitic elements of the other.

11 . The antenna apparatus according to claim 1 , wherein, each of the parasitic elements of the first and second side arrays has a longitudinal direction along a longitudinal direction of the corresponding side array; and,
in each of the first and second side arrays, a sum of longitudinal lengths of any two of the parasitic elements adjacent to each other in the longitudinal direction of the corresponding side array and a length of a gap between the two is smaller than a half of an operating wavelength of the feed element.

12 . The antenna apparatus according to claim 1 , wherein a distance from the front array to the first side array is substantially equal to a distance from the front array to the second side array.

13 . The antenna apparatus according to claim 1 ,
wherein the feed element is a dipole antenna having a longitudinal direction orthogonal to the radiation direction, and each of the plurality of the parasitic elements of the front array has a longitudinal direction orthogonal to the radiation direction.

14 . The antenna apparatus according to claim 13 , wherein the plurality of the front sub-arrays of the front array is disposed such that, in any adjacent two of the front sub-arrays, each of the parasitic e

Assignees

• Panasonic Ip Man Co Ltd

Inventors

• Ohno Takeshi
• Shinkai Sotaro

Classifications

• H01Q19/30

  the primary active element being centre-fed and substantially straight, e.g. Yagi antenna · CPC title

• H01Q19/10

  using reflecting surfaces · CPC title

• H01Q15/14

  Reflecting surfaces; Equivalent structures {(electromagnetic shields H01Q1/526)} · CPC title

• H01Q1/38

  formed by a conductive layer on an insulating support {(patch antennas H01Q9/0407; microstrip dipole antennas H01Q9/065; microstrip slot antennas H01Q13/106; transmission line microstrip antennas H01Q13/206; manufacturing reflecting surfaces using insulating material for supporting the reflecting surface  H01Q15/142)} · CPC title

• H01Q9/065

  Microstrip dipole antennas (patch antenna H01Q9/0407) · CPC title