Antenna apparatus and antenna module

Patent metadata

Field	Value
Publication number	US-11050150-B2
Application number	US-201816171844-A
Country	US
Kind code	B2
Filing date	Oct 26, 2018
Priority date	Dec 1, 2017
Publication date	Jun 29, 2021
Grant date	Jun 29, 2021

Abstract

An antenna apparatus includes: a first ground layer; a second ground layer disposed on a surface of the first ground layer; an antenna pattern spaced apart from the first and second ground layers in a direction of the surface, and configured to transmit and/or receive a radio frequency (RF) signal; and a feed line electrically connected to the antenna pattern and extending from the antenna pattern toward the first ground layer in the direction of the surface, wherein the first ground layer includes a first region recessed, relative to the second ground layer, in the direction of the surface.

First claim

What is claimed is:

1. An antenna apparatus, comprising:
a first ground layer;
a second ground layer disposed on a surface of the first ground layer;
an antenna pattern spaced apart from the first and second ground layers in a first direction of the surface, and configured to transmit and/or receive a radio frequency (RF) signal; and
a feed line electrically connected to the antenna pattern and extending from the antenna pattern toward the first ground layer in the first direction of the surface,
wherein the first ground layer comprises a first recess extending rearward, relative to the second ground layer, in the first direction of the surface, and
wherein the antenna pattern is entirely forwardly spaced apart from a front boundary of the first recess in the first direction of the surface such that a rear edge of the antenna pattern is forwardly spaced apart from the front boundary of the first recess, in the first direction of the surface, by a first distance, and a total length of the antenna pattern is shorter than a length of the first recess in a second direction of the surface perpendicular to the first direction of the surface, and
wherein a second distance between the front boundary of the first recess and a rear boundary of the first recess in the first direction of the surface is greater than the first distance.

2. The antenna apparatus of claim 1 , further comprising:
a feeding via disposed to electrically connect the antenna pattern and the feed line,
wherein the antenna pattern is spaced away from the second ground layer by the feeding via.

3. The antenna apparatus of claim 1 , further comprising:
shielding vias electrically connected to the second ground layer and arranged along a boundary of the first recess.

4. The antenna apparatus of claim 1 , further comprising:
a wiring electrically connected to the feed line; and
a third ground layer disposed to surround the wiring,
wherein the third ground layer comprises a second recess extending rearward, relative to the second ground layer, in the first direction of the surface.

5. The antenna apparatus of claim 4 , further comprising:
a wiring via electrically connected to the wiring; and
a fourth ground layer having a through hole through which the wiring via passes, wherein the fourth ground layer comprises a third recess extending rearward, relative to the second ground layer, in the first direction of the surface.

6. The antenna apparatus of claim 5 , wherein the first, second, and third recesses have a same rectangular shape.

7. The antenna apparatus of claim 1 , wherein the antenna pattern has a form of a dipole.

8. The antenna apparatus of claim 1 , wherein a closest distance between the antenna pattern and a side of the second ground layer in the first direction of the surface is shorter than a recessed length of the first recess.

9. The antenna apparatus of claim 8 , further comprising:
a director pattern spaced apart from the antenna pattern,
wherein a distance between the director pattern and the second ground layer in the first direction of the surface is greater than the recessed length of the first recess.

10. An antenna apparatus, comprising:
a connection member comprising a first ground layer and a second ground layer spaced from the first ground layer in a vertical direction;
an antenna pattern spaced from the first and second ground layers in a forward horizontal direction, and configured to transmit and/or receive a radio frequency (RF) signal; and
a feed line electrically connected to the antenna pattern and extending from the antenna pattern toward the first ground layer,
wherein the first ground layer comprises a first recessed portion that is recessed from an end portion of the second ground layer in a rearward horizontal direction,
wherein a cavity is formed by the second ground layer and the first recessed portion, and
wherein a total length of the antenna pattern is shorter than a length of the first recessed portion in a lateral direction perpendicular to the forward and rearward horizontal directions, and
wherein the antenna pattern is entirely spaced apart from a front boundary of the cavity in the forward horizontal direction such that a rear edge of the antenna pattern is spaced apart from the front boundary of the cavity in the forward horizontal direction by a first distance, and
wherein a second distance between the front boundary of the cavity and a rear boundary of the cavity in the forward and rearward horizontal directions is greater than the first distance.

11. The antenna apparatus of claim 10 , further comprising:
a third ground layer spaced from the first ground layer and the second ground layer in the vertical direction, and comprising a second recessed portion that is recessed from the end portion of the second ground layer in the rearward horizontal direction,
wherein the cavity is further formed by the third ground layer.

12. The antenna apparatus of claim 10 , wherein the first ground layer further comprises side-end portions that protrude from the first recessed portion in the forward horizontal direction and form side boundaries of the cavity.

13. An antenna apparatus, comprising:
a first ground layer comprising a recess;
a second ground layer comprising a surface disposed on the first ground layer and a side at an edge of the surface, wherein a portion of the surface is exposed by the recess;
a feed line extending forward from the first and second ground layers, beyond the side, in a first direction parallel to the surface; and
an antenna pattern electrically connected to the feed line and configured to transmit and/or receive a radio frequency (RF) signal,
wherein the antenna pattern is entirely forwardly spaced apart from the side and a front boundary of the recess in the first direction parallel to the surface, such that the antenna pattern opposes the recess and a rear edge of the antenna pattern is forwardly spaced apart from the front boundary of the first recess, in the first direction parallel to the surface, by a first distance,
wherein a total length of the antenna pattern is shorter than a length of the recess in a second direction parallel to the surface, the second direction parallel to the surface being perpendicular to the first direction parallel to the surface, and
wherein a second distance between the front boundary of the recess and a rear boundary of the recess in the first direction parallel to the surface is greater than the first distance.

14. The antenna apparatus of claim 13 , further comprising:
a feeding via disposed to electrically connect the antenna pattern and the feed line,
wherein the antenna pattern is spaced away from the surface in a direction perpendicular to the surface by the feeding via.

15. The antenna apparatus of claim 13 , further comprising a third ground layer disposed on the first ground layer, wherein the third ground layer comprises a second recess exposing the portion of the surface.

Assignees

• Samsung Electro Mech

Inventors

• Kim Nam Ki
• Ryoo Jeong Ki
• Kim Sang Hyun

Classifications

• H01Q9/16 Primary

  with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole (H01Q9/44 takes precedence) · CPC title

• H01Q19/106

  using two or more intersecting plane surfaces, e.g. corner reflector antennas · CPC title

• H01Q1/52

  Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure (absorbing means H01Q17/00) · CPC title

• H01Q19/24

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

• H01Q9/26

  with folded element or elements, the folded parts being spaced apart a small fraction of operating wavelength (resonant loop antennas H01Q7/00) · CPC title