Compact multiband open-ended slot dipole antenna for a near-eye device

Patent metadata

Field	Value
Publication number	US-12567682-B2
Application number	US-202418609830-A
Country	US
Kind code	B2
Filing date	Mar 19, 2024
Priority date	Apr 19, 2023
Publication date	Mar 3, 2026
Grant date	Mar 3, 2026

Abstract

Antenna systems for near-eye devices are described which include multiple resonance sections fed by a single parasitic element. In one example, an antenna has multiple resonance sections which include an open-ended slot antenna section that resonates within a 2.4 GHz frequency band. In one example, the antenna has a monopole section and a dipole section which both resonate within a 5 GHz to 7 GHz frequency band. In one example, a floating dipole is created by locating an open-ended slot antenna parallel to a monopole antenna, where both antennas share the same electrical feed. In one example, multiple resonance sections on one side of a printed circuit board (PCB) are simultaneously electrically fed by a single parasitic element on the other side of the PCB.

First claim

The invention claimed is:

1 . An antenna system for a near-eye device, the antenna system comprising:
an open-ended slot antenna section; a monopole antenna section; a dipole antenna section; and a feed element, wherein
the dipole antenna section is arranged as a floating dipole antenna,
the open-ended slot antenna section, the monopole antenna section, and the dipole antenna section provide multiple resonance sections, and
the antenna system is integrated into a temple of the near-eye device.

2 . The antenna system of claim 1 , wherein the dipole antenna section is arranged as the floating dipole antenna by locating the open-ended slot antenna section parallel to the monopole antenna section and by having the open-ended slot antenna section and the monopole antenna section share the feed element as a parasitic feed.

3 . The antenna system of claim 2 , wherein the parasitic feed is arranged to feed the monopole antenna section, and the dipole antenna section.

4 . The antenna system of claim 1 , wherein
the open-ended slot antenna section is to resonate within about a 2.4 GHz frequency band, the monopole antenna section is to resonate within a frequency band of about 5 GHz to about 7 GHZ, and the dipole antenna section is also to resonate within the frequency band of about 5 GHz to about 7 GHz.

5 . The antenna system of claim 4 , wherein the floating dipole antenna is to reduce its resonance from a generated frequency of between about 7 GHz and about 8 GHz to a transmission frequency between about 6 GHZ and about 7 GHz.

6 . The antenna system of claim 1 , wherein
the open-ended slot antenna section, the monopole antenna section, and the dipole antenna section are formed on one surface of a printed circuit board (PCB), and the feed element is formed on an opposite surface of the printed circuit board (PCB).

7 . The antenna system of claim 1 , wherein the antenna system has a length of about 20 mm and a width of about 5 mm.

8 . The antenna system of claim 1 , wherein the near-eye device is a near-eye display device.

9 . The antenna system of claim 8 , wherein the near-eye display device is at least one of an augmented reality (AR), virtual reality (VR), or mixed reality (MR) near-eye display device.

10 . A near-eye device, comprising:
a frame; two temples coupled to the frame; and an antenna system integrated into one or both of the two temples, the antenna system comprising:
an open-ended slot antenna section;
a monopole antenna section;
a dipole antenna section; and
a feed element, wherein
the dipole antenna section is arranged as a floating dipole antenna, and
the open-ended slot antenna section, the monopole antenna section, and the dipole antenna section provide multiple resonance sections.

11 . The near-eye device of claim 10 , wherein the dipole antenna section is arranged as the floating dipole antenna by locating the open-ended slot antenna section parallel to the monopole antenna section and by having the open-ended slot antenna section and the monopole antenna section share the feed element as a parasitic feed.

12 . The near-eye device of claim 11 , wherein the parasitic feed is arranged to feed the monopole antenna section, and the dipole antenna section.

13 . The near-eye device of claim 10 , wherein
the open-ended slot antenna section is to resonate within about a 2.4 GHz frequency band, the monopole antenna section is to resonate within a frequency band of about 5 GHz to about 7 GHZ, and the dipole antenna section is also to resonate within the frequency band of about 5 GHz to about 7 GHz.

14 . The near-eye device of claim 13 , wherein the floating dipole antenna is to reduce the resonance from a transmitted frequency of between about 7 GHz and about 8 GHz to a transmission frequency between about 6 GHZ and about 7 GHZ.

15 . The near-eye device of claim 10 , wherein
the open-ended slot antenna section, the monopole antenna section, and the dipole antenna section are formed on one surface of a printed circuit board (PCB), and the feed element is formed on an opposite surface of the printed circuit board (PCB).

16 . The near-eye device of claim 10 , wherein the antenna system has a length of about 20 mm and a width of about 5 mm.

17 . The near-eye device of claim 10 , wherein the near-eye device is a near-eye display device.

18 . The near-eye device of claim 17 , wherein the near-eye display device is at least one of an augmented reality (AR), virtual reality (VR), or mixed reality (MR) near-eye display device.

19 . An antenna system for a near-eye device, the antenna system comprising:
a Printed Circuit Board (PCB) comprising:
a first flat surface comprising:
an open-ended slot antenna section;
a monopole antenna section;
a dipole antenna section; and

a second flat surface opposite the first flat surface, comprising:
a feed element,

wherein the dipole antenna section is arranged as a floating dipole antenna by locating the open-ended slot antenna section parallel to the monopole antenna section and by having the open-ended slot antenna section and the monopole antenna section share the feed element as a parasitic feed, and wherein the open-ended slot antenna section, the monopole antenna section, and the dipole antenna section provide multiple resonance sections.

20 . The antenna system of claim 19 , wherein
the open-ended slot antenna section is to resonate within about a 2.4 GHz frequency band, the monopole antenna section is to resonate within a frequency band of about 5 GHz to about 7 GHZ, and the dipole antenna section is to reduce its resonance within the frequency band of about 5 GHz to about 7 GHz from a generated frequency of between about 7 GHz and about 8 GHz to a transmission frequency between about 6 GHZ and about 7 GHZ.

Assignees

• Meta Platforms Tech Llc

Inventors

• Zhou Tao
• Azad Umar
• Renner Peter Eli
• Channabasappa Eswarappa

Classifications

• G02C11/10

  Electronic devices other than hearing aids · CPC title

• G02B27/0176 Primary

  characterised by mechanical features · CPC title

• G02B2027/0178

  Eyeglass type (eyeglass details G02C) · 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

• H01Q21/30 Primary

  Combinations of separate antenna units operating in different wavebands and connected to a common feeder system · CPC title