CN217693671U

CN217693671U - Wireless earphone

Info

Publication number: CN217693671U
Application number: CN202221311692.8U
Authority: CN
Inventors: 黄玉梁
Original assignee: Realme Mobile Telecommunications Shenzhen Co Ltd
Current assignee: Realme Mobile Telecommunications Shenzhen Co Ltd
Priority date: 2022-05-26
Filing date: 2022-05-26
Publication date: 2022-10-28
Anticipated expiration: 2032-05-26

Abstract

The application discloses a wireless headset. The wireless headset includes: a conductive element; an antenna multiplexed with the conductive element; a matching circuit connected to the antenna, the matching circuit for matching the conductive element and the antenna. In the wireless earphone of this application embodiment, multiplex antenna and conducting element to it is right to utilize matching circuit the conducting element with the antenna matches for conducting element can realize receiving and dispatching signal, so, wireless earphone avoids adopting independent antenna structure, has practiced thrift wireless earphone's inner space, provides more spaces for arranging other spare parts of wireless earphone, and the arrangement of spare part is more reasonable.

Description

Wireless earphone

Technical Field

The application relates to the technical field of electronics, in particular to a wireless headset.

Background

An antenna is a transducer that converts a guided wave propagating on a transmission line into an electromagnetic wave propagating in an unbounded medium (usually free space) or vice versa, a component used in radio equipment to transmit or receive an electromagnetic wave. In the wireless headset, an antenna is an indispensable component, occupies a part of the space of the wireless headset, and needs to be matched with a component of the wireless headset, such as a speaker, so as to make the structure of the wireless headset compact. Therefore, how to arrange the components of the wireless headset reasonably in a limited space becomes a technical problem to be solved.

SUMMERY OF THE UTILITY MODEL

The present application provides a wireless headset.

The wireless headset of the embodiment of the application comprises:

a conductive element;

an antenna multiplexed with the conductive element;

a matching circuit connected to the antenna, the matching circuit for matching the conductive element and the antenna.

In the wireless earphone of this application embodiment, multiplex antenna and conducting element to it is right to utilize matching circuit the conducting element with the antenna matches for conducting element can realize receiving and dispatching signal, so, wireless earphone avoids adopting independent antenna structure, has practiced thrift wireless earphone's inner space, provides more spaces for arranging other spare parts of wireless earphone, and the arrangement of spare part is more reasonable.

Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.

Drawings

The above and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a perspective view of a wireless headset according to an embodiment of the present application;

fig. 2 is a schematic diagram of an internal structure of a wireless headset according to an embodiment of the present application;

fig. 3 is a circuit schematic diagram of a matching circuit of a wireless headset of an embodiment of the present application;

fig. 4 is another perspective view of a wireless headset according to an embodiment of the present application;

FIG. 5 is a schematic diagram of the efficiency of the antenna of an embodiment of the present application;

fig. 6 is a schematic diagram of S11 parameters of the antenna of the embodiment of the present application in the 2.4G resonant frequency band;

fig. 7 is a schematic view of the current distribution of the antenna 20 of the wireless headset according to the embodiment of the present application;

fig. 8 is a schematic diagram of an electric field distribution of the antenna of the wireless headset 100 according to the embodiment of the present application.

Description of main characteristic marks:

the wireless headset comprises a wireless headset 100, a conductive element 10, an antenna 20, a matching circuit 30, a first matching circuit 31, a first resistor R1, a second resistor R2, a first inductor L1, a first capacitor C1, a second matching circuit 32, a second capacitor C2, a second inductor L2, a housing 40, a first external circuit 200 and a second external circuit 300.

Detailed Description

Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are illustrative and are only for the purpose of explaining the present application and are not to be construed as limiting the present application.

The following disclosure provides many different embodiments or examples for implementing different features of the application. In order to simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.

Referring to fig. 1 to 3, a wireless headset 100 according to an embodiment of the present invention includes a conductive element 10, an antenna 20, and a matching circuit 30, wherein the antenna 20 is multiplexed with the conductive element 10; a matching circuit 30 is connected to the antenna 20, the matching circuit 30 being used to match the conductive element 10 and the antenna 20.

In the wireless earphone 100 of the embodiment of the present application, the antenna 20 and the conductive element 10 are multiplexed, and the matching circuit 30 is used to match the conductive element 10 and the antenna 20, so that the conductive element 10 can transmit and receive signals, and thus, the wireless earphone 100 avoids adopting an independent antenna structure, the inner space of the wireless earphone 100 is saved, more spaces are provided for other parts of the wireless earphone 100, and the arrangement of the parts is more reasonable.

In particular, the conductive element 10 is a component of the wireless headset 100 having conductive capabilities. The conductive element 10 may be made of all-metal materials, or may be made of various materials. In the case where the conductive member 10 is made of a metal material, the material of the conductive member 10 is, for example, an aluminum alloy, stainless steel, or the like. In the case where the conductive member 10 employs a plurality of materials, the conductive member 10 is, for example, a structure in which metal powder is coated on a polymer material substrate. The present application is not limited to the specific structure and materials of the conductive element 10, so long as the conductive element 10 is capable of transmitting signals.

The antenna 20 is multiplexed with the conductive element 10, i.e. the antenna 20 and the conductive element 10 are the same physical part. The conductive element 10 can be used to implement a specific function of itself, and can also be used to implement a signal transceiving function, so that the wireless headset 100 can implement signal transceiving using necessary components, and the antenna 20 does not need to be additionally disposed, thereby saving an internal space of the wireless headset 100.

The matching circuit 30 may perform the functions of filtering and/or impedance matching of signals so that the antenna 20 and the conductive element 10 may both operate normally independently without interference, and the matching circuit 30 may perform the adjustment of the frequency of the antenna 20. In the embodiment of the present application, the frequency of the antenna 20 is 2.4GHz to 2.48GHz. Alternatively, the antenna 20 may transmit and receive signals having frequencies between 2.4GHz and 2.48GHz. Of course, the antenna 20 may be designed as a MIMO antenna.

It should be noted that, the wireless headset 100 refers to a headset having a function of transmitting wireless signals, and the wireless headset 100 may be additionally provided with a patch cord to be plugged into an electronic device for use, so as to implement a function of playing audio. It is understood that the wireless headset 100 has the necessary components such as speaker, circuit board, etc., which are not described in detail herein.

In some embodiments, the conductive element 10 comprises a touch pad for receiving touch input. In this manner, the antenna 20 is multiplexed with the touch pad, so that the antenna 20 has a better ability to transmit and receive signals.

Specifically, the touch panel is an input-type component of the wireless headset 100, and a user can output through the touch panel, and the wireless headset 100 can implement different functions according to the input of the user. For example, the volume of the wireless headset 100 may be turned up after the touch pad receives the user's input. For another example, the wireless headset 100 may pause playback after touch-receiving user input.

Since the touch pad performs a function of receiving a touch input, the touch pad is generally disposed near an outer surface of the wireless headset 100, and even protruded from the outer surface of the wireless headset 100. So, antenna 20 and touch pad are multiplexing for antenna 20 receives sheltering from less at the in-process of receiving and dispatching signal, is favorable to signal transmission more, thereby can make antenna 20 ability of receiving and dispatching signal better.

The touch panel may employ a contact type or a non-contact type. For example, in the case where the touch panel employs a touch panel, the touch panel may employ a capacitive touch panel, or in other words, an external input may be detected from a change in capacitance of the touch panel. In the case where the touch panel is a non-contact touch panel, the touch panel may implement a function of detecting an external input in a photoelectric sensing manner. For example, the touch panel may include a proximity sensor, and the purpose of detecting an external input may be achieved by sensing a distance of a target object from the proximity sensor.

In other embodiments, the conductive element 10 may also be a horn wire, a metal decoration, or the like.

Referring to fig. 3 and 4, in some embodiments, the wireless headset 100 includes a housing 40, and the touch pad is disposed in the housing 40 or embedded on the housing 40. Therefore, under the condition that the touch pad is arranged in the shell 40, the shell 40 can protect the touch pad, granules received by the touch pad are reduced, and the service life of the touch pad is prolonged; in the case where the touch panel is embedded in the housing 40, the touch panel more easily receives an external input, the signal detection increases sensitivity, and the transceiving capacity for an antenna signal is stronger.

Specifically, the housing 40 is generally made of a non-shielding material such as plastic, so that signals can penetrate the housing 40 and be received by the antenna 20. The shape of the housing 40 may be designed according to the specific requirements of the wireless headset 100, and the shape and structure of the housing 40 are not limited in this application.

In some embodiments, the conductive element 10 is disposed on the housing 40 and exposed outside the housing 40. In this way, the conductive element 10 can be used as a part of the external component of the wireless headset 100, and the conductive element 10 is exposed outside the housing 40, so that when the conductive element 10 is used as the antenna 20, the signal transmitted and received by the antenna 20 is not blocked, and the signal transmitting and receiving capability of the antenna 20 is improved.

Referring to fig. 3, in some embodiments, the matching circuit 30 includes a first matching circuit 31 and a second matching circuit 32, the first matching circuit 31 is used for matching the antenna 20, and the second matching circuit 32 is used for matching the conductive element 10.

In this way, the first matching circuit 31 matches the antenna 20, and the second matching circuit 32 matches the conductive element 10, so that the antenna 20 and the conductive element 10 independently perform corresponding functions without interfering with each other.

In some embodiments, the first matching circuit 31 includes a plurality of resistors electrically connected for impedance matching the antenna 20. In this way, the plurality of resistors are electrically connected to each other, which not only functions to limit the current of the signal, but also adjusts the total resistance value of the first matching circuit, thereby implementing the function of impedance matching for the antenna 20.

Specifically, among the plurality of resistors, at least one resistor may be grounded, and at least one resistor may be connected to the radio frequency circuit, so that the antenna 20 may be accessed to the radio frequency circuit. The plurality of resistors may form a series circuit, a parallel circuit, or a circuit in which both series and parallel circuits exist.

It should be noted that, in the plurality of resistors, the resistance value of one of the resistors may be greater than zero ohm, or equal to zero ohm. The resistance value of each resistor is specifically designed according to actual requirements.

Referring to fig. 3, in some embodiments, the resistors of the first matching circuit 31 include at least one first resistor R1 and at least one second resistor R2, wherein a first end of one of the first resistors R1 is electrically connected to the antenna 20, and a second end of one of the first resistors R1 is used for connecting to the first external circuit 200;

a first end of the second resistor R2 is connected to the first end of the first resistor R1 or the antenna 20, and a second end of the second resistor R2 is grounded.

In this way, the first resistor R1 and the second resistor R2 can adjust the impedance of the first matching circuit 31, so that the first matching circuit 31 performs impedance matching on the antenna 20.

Specifically, the first external circuit 200 is, for example, a radio frequency circuit, and the radio frequency circuit can process a transmission/reception signal of the antenna 20. The resistance of the first resistor R1 may be greater than zero ohm or equal to zero ohm. The resistance of the second resistor R2 may be greater than zero ohm or equal to zero ohm.

Referring to fig. 3, in some embodiments, the first resistor R1 and the second resistor R2 are both one, the first matching circuit 31 further includes a first inductor L1 and a first capacitor C1, a first end of the first inductor L1 is connected to the antenna 20, a second end of the first inductor L1 is connected to a first end of the first resistor R1, and a second end of the first resistor R1 is used for connecting the first external circuit 200;

a first end of the second resistor R2 is connected to the antenna 20, a first end of the first capacitor C1 is connected to a second end of the first inductor L1, and a second end of the first capacitor C1 is grounded.

In this way, the first inductor L1 and the first capacitor C1 can implement a filtering function, so that the antenna 20 can operate at a target frequency, and the operating performance of the antenna 20 is ensured.

In some embodiments, the second matching circuit 32 includes a second capacitor C2 and a second inductor L2, a first terminal of the second capacitor C2 is connected to the antenna 20, a second terminal of the second capacitor C2 is connected to ground, a first terminal of the second inductor L2 is connected to the antenna 20, and a second terminal of the second inductor L2 is used for connecting to the second external circuit 300. In this way, the second inductor L2 and the first capacitor C1 can perform a filtering function, so that the second matching circuit 32 can match the conductive element 10.

Specifically, in the case where the conductive member 10 is a touch panel or the like having a component requiring circuit control, the second external circuit 300 may be a circuit controlling the conductive member 10. The second capacitor C2 and the second inductor L2 also avoid the function of the antenna 20 to implement the receiving and transmitting of signals under the condition that the conductive element 10 is ensured to implement the original function.

Referring to fig. 5, fig. 5 is a schematic diagram of the efficiency of the antenna 20 according to the embodiment of the present application. As can be seen from fig. 5, the efficiency of the antenna 20 according to the embodiment of the present invention is about-6 dB on average, which can meet the requirement of the wireless headset 100.

Referring to fig. 6, fig. 6 is a schematic diagram of S11 parameters of the antenna 20 in the 2.4G resonant frequency band according to the embodiment of the present disclosure. As can be seen from fig. 6, the antenna 20 according to the embodiment of the present invention has a relatively low loss, and meets the use requirements.

Referring to fig. 7, fig. 7 is a schematic diagram illustrating current distribution of the antenna 20 of the wireless headset according to the embodiment of the present disclosure. As can be seen from fig. 7, in the current distribution of the antenna 20 of the wireless headset 100, the current intensity is on the outside, and the current has less influence on the human ear.

Referring to fig. 8, fig. 8 is a schematic diagram of an electric field distribution of the antenna 20 of the wireless headset 100 according to the embodiment of the present disclosure. As can be seen from fig. 8, the electric field of the wireless headset 100 is distributed on both sides of the antenna 20 in the thickness direction, which meets the use requirement.

In the description herein, references to the description of the terms "one embodiment," "certain embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

In the description of the present application, it should be noted that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, a fixed connection, a detachable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

While embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that: numerous changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the application, the scope of which is defined by the claims and their equivalents.

Claims

1. A wireless headset, comprising;

a conductive element;

an antenna multiplexed with the conductive element;

2. The wireless headset of claim 1, wherein the conductive element comprises a touch pad for receiving touch input.

3. The wireless headset of claim 2, wherein the wireless headset comprises a housing, and wherein the touch pad is disposed within or embedded on the housing.

4. The wireless headset of claim 1, wherein the wireless headset includes a housing, the conductive element being disposed on the housing and exposed outside the housing.

5. The wireless headset of claim 1, wherein the matching circuit comprises a first matching circuit for matching the antenna and a second matching circuit for matching the conductive element.

6. The wireless headset of claim 5, wherein the first matching circuit comprises a plurality of resistors electrically connected to impedance match the antenna.

7. The wireless earphone according to claim 6, wherein the resistors comprise at least one first resistor and at least one second resistor, wherein a first end of one of the first resistors is electrically connected to the antenna, and wherein a second end of one of the first resistors is used for connecting a first external circuit;

the first end of the second resistor is connected with the first end of the first resistor or the antenna, and the second end of the second resistor is grounded.

8. The wireless earphone according to claim 7, wherein the first resistor and the second resistor are both one in number, the first matching circuit further comprises a first inductor and a first capacitor, a first end of the first inductor is connected to the antenna, a second end of the first inductor is connected to a first end of the first resistor, and a second end of the first resistor is used for connecting a first external circuit;

the first end of the second resistor is connected with the antenna, the first end of the first capacitor is connected with the second end of the first inductor, and the second end of the first capacitor is grounded.

9. The wireless earphone according to claim 7, wherein the second matching circuit comprises a second capacitor and a second inductor, a first end of the second capacitor is connected to the antenna, a second end of the second capacitor is used for connecting to a second external circuit, a first end of the second inductor is connected to the antenna, and a second end of the second inductor is grounded.

10. The wireless headset of claim 1, wherein the antenna has a frequency of 2.4GHz-2.48GHz.