US-20260128526-A1 - HEAD-MOUNTED ELECTRONIC DEVICE AND ANTENNA STRUCTURE

US20260128526A1US 20260128526 A1US20260128526 A1US 20260128526A1US-20260128526-A1

Abstract

A head-mounted electronic device worn by a user and an antenna structure are provided. The head-mounted electronic device comprises the antenna structure and housing, where the antenna structure is configured to transmit or receive wireless signals and is located at a portion of the housing. The portion protrudes away from a head of the user. The antenna structure may comprise a first electrode and a second electrode located at different sides of a feeding point, where the first electrode and the second electrode serve as at least a part of a first antenna and at least a part of the second antenna, respectively, and are configured to transmit or receive the wireless signals of different frequencies.

Inventors

Kenichiro Kodama

Assignees

GOERTEK INC.

Dates

Publication Date: 20260507
Application Date: 20230104

Claims (20)

1 . A head-mounted electronic device adapted to be worn by a user, comprising: an antenna structure, configured to transmit and/or receive wireless signals, and a housing, wherein the antenna structure is located at a portion of the housing, and the portion is configured to protrude away from the head of the user.
2 . The head-mounted electronic device according to claim 1 , wherein the portion is configured to be farthest from the head of the user, among a local part of the housing where the portion is located.
3 . The head-mounted electronic device according to claim 2 , wherein: the portion is configured to be farthest from the head of the user, among all portions which are configured to protrude away from the head in the housing.
4 . The head-mounted electronic device according to claim 1 , wherein the antenna structure comprises: a first electrode, located at a first side of a feeding point; and a second electrode, located at a second side of the feeding point; wherein the first electrode serves as at least a part of a first antenna fed from the feeding point, the second electrode serves as at least a part of a second antenna fed from the feeding point, and the first antenna and the second antenna are configured to transmit and/or receive wireless signals of different frequencies.
5 . The head-mounted electronic device according to claim 4 , wherein the first antenna and the second antenna are different types of antenna.
6 . The head-mounted electronic device according to claim 5 , wherein the different types of antennas are selected from the group consisting of a monopolar antenna, a slot antenna, a loop antenna, an inverted-L antenna, an inverted-F antenna, and a meander antenna.
7 . The head-mounted electronic device according to claim 4 , wherein one or more of the first electrode and the second electrode are selected from the group consisting of conductive films located on a metal frame, a flexible printed circuit, and a laser-direct-structured material.
8 . The head-mounted electronic device according to claim 4 , wherein the housing comprises: a first component configured to be in front of the head of the user; and a second component configured to be at either a right or a left of the head; wherein an end of the first component and an end of the second component are physically connected at a junction.
9 . The head-mounted electronic device according to claim 8 , wherein the junction serves as the portion of the housing.
10 . The head-mounted electronic device according to claim 8 , further comprising a radio-frequency (RF) chip, configured to feed the first antenna and the second antenna via the feeding point, wherein: the housing is flexible at the junction; the RF chip is electrically connected to at least one of the first antenna and the second antenna in response to an angle between a surface of the first component and a surface of the second component being within a first range; and the RF chip is electrically disconnected from the at least one of the first antenna and the second antenna in response to the angle being not within the first range.
11 . The head-mounted electronic device according to claim 8 , wherein a first of the first electrode and the second electrode is disposed at the end of the first component, and a second of the first electrode and the second electrode is disposed at the end of the second component.
12 . The head-mounted electronic device according to claim 11 , wherein the feeding point is located between the end of the first component and the end of the second component.
13 . The head-mounted electronic device according to claim 8 , wherein both the first electrode and the second electrode are disposed at the end of the first component, or at the end of the second component.
14 . The head-mounted electronic device according to claim 10 , wherein the first electrode is located within a first plane parallel with or perpendicular to a surface of the housing, and the second electrode is located within the first plane or a second plane which is parallel with or perpendicular to the surface of the housing.
15 . The head-mounted electronic device according to claim further comprising: a lens configured to be disposed in front of an eye of the user; wherein the antenna structure is adjacent to the lens.
16 . The head-mounted electronic device according to claim 15 , wherein the housing comprises a lens frame configured to fix the lens to the housing, and at least a part of the antenna structure is attached to the lens frame.
17 . The head-mounted electronic device according to claim 16 , wherein at least a part of the first electrode is disposed adjacent to the lens and is conformed to an edge of the lens or to the lens frame. at least a part of the second electrode and the part of the first electrode extend along the edge or the lens frame in different directions.
18 . The head-mounted electronic device according to claim 15 , wherein at least one of the first electrode and the second electrode is conformed to a surface of the lens.
19 . The head-mounted electronic device according to claim 4 , further comprising: a conductive bracket configured to mount a functional apparatus on the housing, wherein the antenna structure is attached to the housing via the conductive bracket, the conductive bracket serves as a ground for the first antenna and the second antenna.
20 . An antenna structure, comprising: a first electrode, located at a first side of a feeding point; and a second electrode, located at a second side of the feeding point; wherein the first electrode serves as at least a part of a first antenna fed from the feeding point, the second electrode serves as at least a part of a second antenna fed from the feeding point, and the first antenna and the second antenna are configured to transmit or receive wireless signals of different frequencies.

Description

This application is a National Stage of International Application No. PCT/CN 2023/070295, filed on Jan. 4, 2023, which is hereby incorporated by reference in its entirety. TECHNICAL FIELD The present disclosure relates to the technical field of wireless devices, and in particular, to a head-mounted electronic device and an antenna structure. BACKGROUND Recent decades have witnessed prosperity of electronic wearable devices. Being designed properly, these devices are generally not handheld during usage, but are “worn” as accessories or even apparel on body parts of a user, i.e. a wearer. Hence, it is quite convenient for the wearer to interact with the outside world simultaneously in various manners. For example, the virtual reality (VR) or augmented reality (AR) technology may apply electronic headwear to provide visual and/or acoustic information, while the wearer is able to operate a keyboard or a gamepad by hand. For another example, an electronic wristband may collect electro-cardio signals of the wearer, while not interrupting daily activities of the wearer. For another example, electronic eyeglasses may prompt the wearer with detailed content of instant messages, even when both bands of the wearer are occupied. Since visual signals and acoustic signals are most common among all kinds of information received by human beings, many electronic wearable devices are head-mounted to facilitate interaction with the eyes, the ears, and the vocal organs of the wearers, or to provide a vivid imitation on wearers'real perception. Rapid development of the batteries and the integrated circuits renders electronic wearable devices smaller sizes and more compact structures, which aims at merging them into each application scenario in people's daily life. Therefore, an increasing requirement on convenient “anytime and anywhere” accesses to the Internet and WLANs demands the electronic wearable devices wireless and portable. A prospect is that the electronic wearable devices are capable to provide high-quality wireless accesses while not causing an impact on an electromagnetic environment of other components in the device. For example, an AR/VR head-mounted display should be no larger and no heavier than ordinary eyeglasses or goggles. Such objective raises great challenges on a robust design of the electronic wearable devices, especially the head-mounted devices. SUMMARY In view of the above, a head-mounted electronic device and an antenna structure are provided according to embodiments of the present disclosure, so as to reduce an impact of a human body, especially a head, on wireless communication of the head-mounted electronic device. Following technical solutions are provided to achieve the above technical objective. In one aspect, a head-mounted electronic device is provided, comprising: an antenna structure, configured to transmit or receive wireless signals, and a housing, where the antenna structure is located at a portion of the housing, and the portion protrudes away from a head of a user when the head-mounted electronic device is worn by the user. In one embodiment, the portion is farthest from a head of a user, among a local part which is of the housing and at which the portion is located, when the head-mounted electronic device is worn by the user. In one embodiment, the portion is farthest from a head of a user, among all portions which protrude away from the head in the housing, when the head-mounted electronic device is worn by the user. In one embodiment, the antenna structure comprises: a first electrode, located at a side of a feeding point; and a second electrode, located at another side of a feeding point; where the first electrode serves as at least a part of a first antenna fed from the feeding point, the second electrode serves as at least a part of a second antenna fed from the feeding point, and the first antenna and the second antenna are configured to transmit or receive wireless signals of different frequencies. In one embodiment, the first antenna and the second antenna are of different antenna types. In one embodiment, the different antenna types are from a monopolar antenna, a slot antenna, a loop antenna, an inverted-L antenna, an inverted-F antenna, and a meander antenna. In one embodiment, one or both of the first electrode and the second electrode are conductive films located on a metal frame, a flexible printed circuit or a laser-direct-structured material. In one embodiment, the housing comprises: a first component disposed in front of the head of the user when the head-mounted electronic device is worn by the user; and a second component disposed at either right or left of the head when the head-mounted electronic device is worn by the user; where an end of the first component and an end of the second component are physically connected at a junction. In one embodiment, the junction serves as the portion of the housing. In one embodiment, the housing is flexible at the junction; th