CN216451508U

CN216451508U - Bluetooth headset adopting circularly polarized antenna

Info

Publication number: CN216451508U
Application number: CN202122101030.XU
Authority: CN
Inventors: 黄跃春; 许明强
Original assignee: Shenzhen Atx Technology Co ltd
Current assignee: Shenzhen Atx Technology Co ltd
Priority date: 2021-08-31
Filing date: 2021-08-31
Publication date: 2022-05-06
Anticipated expiration: 2031-08-31

Abstract

The utility model is suitable for the field of Bluetooth earphones, and provides a Bluetooth earphone adopting a circularly polarized antenna, which comprises an earphone shell, wherein a main board, a spiral antenna, a battery, a loudspeaker, a microphone and a charging device are arranged in the earphone shell, a radio frequency port is arranged on the main board, one end of the spiral antenna is connected with the radio frequency port through a connecting component, the battery and the loudspeaker are arranged at one end of the main board, the microphone and the charging device are both connected to the other end of the main board through a lead, and a radio frequency decoupling inductor is also arranged on the lead; the circularly polarized helical antenna has good co-frequency band or adjacent frequency band interference resistance, so that signals between the left ear and the right ear of the earphone and external interference signals form certain polarization isolation, the anti-interference capability can be effectively improved, in addition, the radiation efficiency of the helical antenna can be effectively prevented from being reduced between parts inside the earphone shell by connecting the radio frequency decoupling inductor, the helical antenna can keep high radiation efficiency, and the loss is reduced.

Description

Bluetooth headset adopting circularly polarized antenna

Technical Field

The utility model belongs to the field of Bluetooth earphones, and particularly relates to a Bluetooth earphone adopting a circularly polarized antenna.

Background

A pair of fully wireless Bluetooth headsets have no wire connection between the left and right ears, and can synchronize communication between the left and right ears through a wireless communication channel, such as synchronized stereophonic broadcasting, wherein a communication antenna in the Bluetooth headset plays a crucial role. In order to achieve the effect of a full wireless bluetooth headset, the prior art discloses a bluetooth headset antenna design with multiple structures, wherein an onboard monopole antenna, an onboard inverted F-shaped antenna, a wire monopole antenna, an FPC antenna, an LDS laser etching antenna, a ceramic antenna, and the like are provided, and these antennas all transmit electromagnetic waves in a linear polarization manner, and are easily interfered by other radio applications in the same frequency band or adjacent frequency band, such as WIFI,5G, and the like, which also adopt the linear polarization technique.

The prior art is therefore deficient and needs improvement.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of the prior art and provides a Bluetooth headset adopting a circularly polarized antenna.

The utility model is realized by the following steps: the utility model provides an adopt circular polarized antenna's bluetooth headset, includes the earphone shell, be equipped with mainboard, helical antenna, battery, loudspeaker, microphone and charging device in the earphone shell, be equipped with the radio frequency port on the mainboard, helical antenna's one end through a connecting element with the radio frequency port is connected, the battery with loudspeaker locate the one end of mainboard, microphone and charging device all connect in through a wire the other end of mainboard, still be equipped with radio frequency decoupling inductance on the wire.

Further, the rf decoupling inductor is connected in series to a wire connecting the microphone and the charging device to the motherboard to isolate the rf loop.

Furthermore, the connecting component is one of a conductive thimble, a conductive elastic sheet and a radio frequency cable.

Further, earphone shell is including going into ear and ear portion, the mainboard the battery with loudspeaker are all located go into in the ear, charging device the microphone with helical antenna all locates in the ear portion, charging device stretches out the side of ear portion, the microphone is close to the bottom setting of ear portion.

Furthermore, the ear handle part is also provided with a support post, and the spiral antenna is closely attached to the surface of the support post in a surrounding mode to form a spiral shape.

Further, the charging device is a charging post.

The Bluetooth headset adopting the circularly polarized antenna has good same-frequency-band or adjacent-frequency-band interference resistance by adopting the circularly polarized helical antenna, so that signals between the left ear and the right ear of the headset and external interference signals form certain polarization isolation, the anti-interference capability can be effectively improved, in addition, the radiation efficiency of the helical antenna can be effectively prevented from being reduced by connecting radio frequency decoupling inductors between parts in the shell of the headset, the helical antenna can keep high radiation efficiency, and the loss is reduced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

The drawings are only for purposes of illustrating and explaining the present invention and are not to be construed as limiting the scope of the present invention.

FIG. 1 is a schematic view of the structure provided by the present invention.

Fig. 2 is a side sectional view provided by the present invention.

Fig. 3 is an exploded view of the structure provided by the present invention.

The reference numbers illustrate: 1. an earphone housing; 11. putting into ear; 12. an ear stem portion; 121. a support post; 2. a main board; 21. a radio frequency port; 3. a helical antenna; 4. a battery; 5. a horn; 6. a microphone; 7. a charging device; 8. a connecting assembly; 9. a radio frequency decoupling inductance.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and do not limit the utility model.

Referring to fig. 1 to 3, for the utility model discloses a bluetooth headset using circular polarization antenna, including a headset housing 1, a main board 2, a spiral antenna 3, a battery 4, a speaker 5, a microphone 6 and a charging device 7 are disposed in the headset housing 1, and the present embodiment is preferably applied to a bluetooth headset with a handle, specifically, the headset housing 1 includes an ear insertion portion 11 and an ear handle portion 12, the main board 2, the battery 4 and the speaker 5 are all disposed in the ear insertion portion 11, generally, a sound outlet hole matching with the speaker 5 is disposed on the ear insertion portion 11, the charging device 7, the microphone 6 and the spiral antenna 3 are all disposed in the ear handle portion 12, the ear handle portion 12 is further provided with a support post 121, on one hand, the spiral antenna 3 is closely attached to the surface of the support post 121 in a surrounding manner to form a spiral shape to form circular polarization, so as to have good anti-interference capability in the same frequency band or adjacent frequency band, the signal between the left ear and the right ear of the earphone and the external interference signal form certain polarization isolation, the anti-interference capability is effectively improved, and the communication between the left ear and the right ear is facilitated. On the other hand, the support column 121 serves as a support member for the helical antenna 3, and plays a role in fixing the helical antenna 3, so as to prevent the helical antenna 3 from randomly shaking inside the earphone housing 1, thereby affecting the circular polarization effect.

Be equipped with radio frequency port 21 on the mainboard 2, helical antenna 3's one end pass through a coupling assembling 8 with radio frequency port 21 is connected, and is further, coupling assembling 8 is one of them in electrically conductive thimble, electrically conductive shell fragment and the radio frequency cable, in order to realize helical antenna 3 is connected with mainboard 2, helical antenna 3 preferred work is on the frequency channel of bluetooth 2.4 GHz. The battery 4 and the loudspeaker 5 are arranged at one end of the main board 2, the microphone 6 and the charging device 7 are connected to the other end of the main board 2 through a wire, because the volume of the ear handle in the earphone is limited, the charging device 7, the microphone 6 and a wire connecting the charging device 7, the microphone 6 and the main board 2 are gathered at the ear handle part 12 with a small space, which reduces the efficiency of the helical antenna 3, thereby increasing the conduction loss of the helical antenna 3, in order to solve the above problem, the wire is further provided with a radio frequency decoupling inductor 9, specifically, the radio frequency decoupling inductor 9 is connected in series with a wire connecting the microphone 6 and the charging device 7 to the main board 2 to cut off a radio frequency loop, thereby effectively avoiding the radiation efficiency of the helical antenna 3 from being reduced by parts inside the earphone housing 1, so that the helical antenna 3 can maintain high radiation efficiency and reduce loss.

The charging device 7 extends out of the side face of the ear handle part 12, the charging device 7 is a charging post, and the charging action of the whole Bluetooth headset can be realized by matching with a charging box of the Bluetooth headset, and the charging mode is the prior art and is not elaborated in detail in the embodiment. The microphone 6 is arranged near the bottom end of the ear handle part 12 and is as close to the mouth of the human body as possible so as to record a clear sound source.

The present invention is not limited to the above preferred embodiments, and any modification, equivalent replacement or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides an adopt bluetooth headset of circular polarized antenna which characterized in that: including earphone shell (1), be equipped with mainboard (2), helical antenna (3), battery (4), loudspeaker (5), microphone (6) and charging device (7) in earphone shell (1), be equipped with radio frequency port (21) on mainboard (2), the one end of helical antenna (3) through a connecting element (8) with radio frequency port (21) are connected, battery (4) with loudspeaker (5) are located the one end of mainboard (2), microphone (6) and charging device (7) all connect in through a wire the other end of mainboard (2), still be equipped with radio frequency decoupling inductance (9) on the wire.

2. The bluetooth headset with a circularly polarized antenna of claim 1, wherein: the radio frequency decoupling inductor (9) is connected in series with a wire connecting the microphone (6) and the charging device (7) to the motherboard (2) to isolate the radio frequency loop.

3. The bluetooth headset with a circularly polarized antenna of claim 1, wherein: the connecting component (8) is one of a conductive thimble, a conductive elastic sheet and a radio frequency cable.

4. The bluetooth headset with a circularly polarized antenna of claim 1, wherein: earphone shell (1) is including going into ear (11) and ear handle portion (12), mainboard (2) battery (4) with loudspeaker (5) are all located go into in ear (11), charging device (7) microphone (6) with helical antenna (3) are all located in ear handle portion (12), charging device (7) stretch out the side of ear handle portion (12), microphone (6) are close to the bottom setting of ear handle portion (12).

5. The Bluetooth headset with a circularly polarized antenna of claim 4, wherein: the ear handle part (12) is further provided with a support column (121), and the spiral antenna (3) is closely attached to the surface of the support column (121) in a surrounding mode to form a spiral shape.

6. The bluetooth headset with a circularly polarized antenna of claim 1, wherein: the charging device (7) is a charging column.