CN218548779U

CN218548779U - Antenna structure and terminal equipment

Info

Publication number: CN218548779U
Application number: CN202222808244.5U
Authority: CN
Inventors: 吴佳骏
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2022-10-24
Filing date: 2022-10-24
Publication date: 2023-02-28
Anticipated expiration: 2032-10-24

Abstract

The present disclosure relates to an antenna structure and a terminal device, the antenna structure comprising a radiating body (1), a first parasitic radiator (2) and a second parasitic radiator (3), wherein the radiating body comprises a first radiating part (11) and a second radiating part (12) arranged vertically; the first parasitic radiator comprises a main radiating arm (21) extending vertically and upwards from the first radiating part and a pi-shaped radiating arm (22) connected to one side of the main radiating arm; the second parasitic radiator comprises a main radiation branch (30) arranged on one side far away from the first radiation part and a plurality of bending radiation branches connected to the main radiation branch, and the second parasitic radiator is connected with the radiation arm of the II-shaped radiation arm through one bending radiation branch. In the antenna structure provided by the disclosure, different wiring forms are utilized in a limited space, the LMH frequency band can be covered without setting a switch, and the antenna performance is met in a small-size area.

Description

Antenna structure and terminal equipment

Technical Field

The present disclosure relates to the field of communications, and in particular, to an antenna structure and a terminal device.

Background

With the continuous development of communication technology, more and more frequency bands need to be covered by an antenna, and the environment of the antenna is worse and worse, so that one antenna needs to cover more frequency bands. In the related art, the frequency band of the antenna is switched by using the switch, which results in higher cost and incapability of ensuring performance.

SUMMERY OF THE UTILITY MODEL

To overcome the problems in the related art, the present disclosure provides an antenna structure and a terminal device.

According to a first aspect of embodiments of the present disclosure, there is provided an antenna structure comprising a radiating body, a first parasitic radiator and a second parasitic radiator, wherein,

the radiation body comprises a first radiation part and a second radiation part which are vertically arranged;

the first parasitic radiator comprises a main radiating arm vertically and upwards extended from the first radiating part and a pi-shaped radiating arm connected to one side of the main radiating arm;

the second parasitic radiator comprises a main radiation branch and a plurality of bent radiation branches, the main radiation branch is arranged on one side far away from the first radiation part, the plurality of sections of bent radiation branches are connected to the main radiation branch, and the second parasitic radiator is connected with the radiation arm of the n-shaped radiation arm through one section of bent radiation branch.

Optionally, the Π -type radiating arm includes a first radiating arm connected to the main radiating arm, and a second radiating arm and a third radiating arm connected to the first radiating arm in parallel, where the third radiating arm extends beyond the first radiating portion and forms a first coupling space with the second radiating portion.

Optionally, a first gap is provided between the second radiating arm and the third radiating arm, and a second gap is provided between the third radiating arm and the main radiating arm.

Optionally, the second parasitic radiator includes a first bent radiation branch, a second bent radiation branch, a third bent radiation branch and a fourth bent radiation branch connected to the main radiation branch, the first bent radiation branch extends to and is connected to the third radiation arm, the second bent radiation branch extends to and extends into the first coupling space, and the third bent radiation branch bends multiple times and forms a second coupling space with the second bent radiation branch.

Optionally, a third gap is formed between the fourth bent radiating branch and the first bent radiating branch.

Optionally, the first bent radiating branch, the second bent radiating branch and the fourth bent radiating branch all have an inclined section and a straight section extending in the same direction, and the length of the second bent radiating branch is greater than that of the fourth bent radiating branch.

Optionally, fourth gaps are respectively formed between the top of the second bent radiating branch and the first radiating portion, between two sides of the second bent radiating branch and the first bent radiating portion, and between the bottom of the second bent radiating branch and the third bent radiating portion.

Optionally, the third is buckled radiation and is propped up including with the "L" type section, "one" type section that links gradually and fall "pi" type section, the second is buckled radiation prop up have with "L" type section shape matched with section of turning over, fall half section of side of "pi" type section extend to the second buckle radiation prop up with between the second radiation portion.

Optionally, the antenna structure includes a first feeding point disposed on the radiating body, a second feeding point disposed on the first parasitic radiator, and a third feeding point disposed on the second parasitic radiator.

Optionally, a signal generated by the radiation main body is used to cover an intermediate frequency, the first parasitic radiator is connected to the top of the radiation main body, the generated signal is used to cover a low frequency, the second parasitic radiator is disposed at the bottom of the radiation main body, and the generated signal is used to cover a high frequency.

According to a second aspect of the embodiments of the present disclosure, there is provided a terminal device including the above antenna structure.

The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects: the length of the radiation main body is increased at the top end on the basis of the radiation main body, namely, the main radiation arm is additionally arranged, the main radiation arm can cover low frequency in a way of increasing the length, but the main radiation arm is simply bent to increase the length, the radiation area is insufficient, and the efficiency is poor; similarly, the second parasitic radiator can cover high frequency by increasing the length and the radiating area, so that the overall performance of the antenna structure is improved. In the antenna structure that this disclosure provided, utilize different line forms of walking in limited space, realize need not to set up the switch alright cover the LMH frequency channel, satisfy the antenna performance in small-size region.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.

Fig. 1 is a schematic diagram of an antenna structure shown in accordance with an exemplary embodiment.

Fig. 2 is a schematic diagram of an antenna structure shown in accordance with an exemplary embodiment.

Fig. 3 and 4 are efficiency diagrams illustrating an antenna structure according to an example embodiment.

Description of the reference numerals

1-a radiation body, 11-a first radiation part, 12-a second radiation part, 2-a first parasitic radiator, 21-a main radiation arm, 22-a pi radiation arm, 221-a first radiation arm, 222-a second radiation arm, 223-a third radiation arm, 201-a first gap, 202-a second gap, 20-a first coupling space, 3-a second parasitic radiator, 30-a main radiation branch, 31-a first bent radiation branch; 32-second meander radiation branch, 33-third meander radiation branch, 34-fourth meander radiation branch, 35-second coupling space, 301-third gap, 100-first feeding point, 200-second feeding point, 300-third feeding point.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. The following description refers to the accompanying drawings in which the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.

It should be noted that all actions of acquiring signals, information or data in the present application are performed under the premise of complying with the corresponding data protection regulation policy of the country of the location and obtaining the authorization given by the owner of the corresponding device.

In the present disclosure, unless otherwise specified, use of directional words such as "top" and "bottom" is intended to refer to the drawing of the corresponding drawing as defined with reference to the "inner" and "outer" refers to the inner and outer of the profile of the corresponding part. Furthermore, the terms "first," "second," and the like, as used in this disclosure, are intended to distinguish one element from another, and not necessarily for order or importance. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated.

In the present disclosure, as shown in fig. 1 and 2, there is provided an antenna structure including a radiation body 1, a first parasitic radiator 2, and a second parasitic radiator 3, wherein the radiation body 1 includes a first radiation part 11 and a second radiation part 12 which are vertically arranged; the first parasitic radiator 2 includes a main radiating arm 21 extending vertically upward from the first radiating portion 11 and a Π -shaped radiating arm 22 connected to one side of the main radiating arm 21; the second parasitic radiator 3 includes a main radiating branch 30 disposed at a side far from the first radiating portion 11 and a plurality of bent radiating branches connected to the main radiating branch 30, and the second parasitic radiator 3 is connected to the radiating arm of the Π -shaped radiating arm 22 through one of the bent radiating branches.

The design idea of the antenna structure provided by the present disclosure is specifically as follows: the radiation main body 1 is an IFA antenna, taking the antenna structure of a mobile phone as an example, the radiation main body 1 is arranged on the side edge of the bottom of the mobile phone, the whole length is only 30mm, and under the condition of limited length, a signal generated by the radiation main body can only cover intermediate frequency, and is difficult to cover low frequency and high frequency. When designing, the length of the radiation main body 1 is increased at the top end on the basis of the radiation main body 1, namely, the main radiation arm 21 is additionally arranged, the main radiation arm can cover low frequency by increasing the length, but the main radiation arm is simply bent to increase the length, the radiation area is insufficient, and the efficiency is poor; similarly, the second parasitic radiator 3 is also able to cover high frequencies by increasing the length and the radiating area, so that the overall performance of the antenna structure is improved. In the antenna structure provided by the disclosure, the LMH frequency band can be covered without setting a switch, and the antenna performance is satisfied in a small-size area.

Here, it should be noted that the length of the main radiating arm 21 extending vertically upwards determines the position of the Π -shaped radiating arm 22, and can be designed as required; the number and the specific bending shape of the multi-section bending radiating arms are not particularly limited, and the multi-section bending radiating arms can be designed according to needs, for example, L-shaped bending, arc-shaped bending, serpentine bending and the like all belong to the protection scope of the present disclosure. The whole antenna structure that this disclosure provided has 30mm, can not occupy too much space, in addition, can design as required about the concrete line form of walking of triplex in the antenna structure.

Regarding the design of the Π -type radiation arm 22, the structure and size of which can be designed as required, in the present disclosure, the Π -type radiation arm 22 includes a first radiation arm 221 connected to the main radiation arm 21, and a second radiation arm 222 and a third radiation arm 223 connected to the first radiation arm 221 in parallel, and the third radiation arm 223 extends to exceed the first radiation portion 11 and forms the first coupling space 20 with the second radiation portion 12. The radiating area is increased by pi-type parasitics, so that the generated signal can cover low frequency, and the size and shape of the first coupling space 20 influence the bandwidth and efficiency of the low frequency, and can be designed as required.

In the present disclosure, the second radiating arm 222 and the third radiating arm 223 have a first gap 201 therebetween, and the third radiating arm 223 and the main radiating arm 21 have a second gap 202 therebetween. The first gap 201 and the second gap 202, as well as a third gap 301, a fourth gap, etc. which will be described later, are the same in function, and are used for radiating signals outwards, and the first gap 201 and the second gap 202 can be ensured in size by designing the width and the length of the second radiating arm 222 and the third radiating arm 223, and in this embodiment, the width of the first gap 201 and the second gap 202 can be 1-2mm, and the length depends on the length of the corresponding radiating arms.

The second parasitic radiator 3 may be of any suitable construction. In an exemplary embodiment of the present disclosure, the second parasitic radiator 3 includes a first bent radiating branch 31, a second bent radiating branch 32, a third bent radiating branch 33 and a fourth bent radiating branch 34 connected to the main radiating branch 30, the first bent radiating branch 31 extends to be connected to the third radiating arm 223, the second bent radiating branch 32 extends to extend into the first coupling space 20, and the third bent radiating branch 33 is bent multiple times and forms a second coupling space 35 with the second bent radiating branch 32. Through the design of the multi-section bent radiation branch, the length of the parasitic radiator is increased, meanwhile, the radiation area is increased, and the high-frequency coverage is realized. The shape and size of the second coupling space 35 will affect the bandwidth and efficiency of high frequencies and can be designed as desired.

In the present disclosure, a third gap 301 is provided between the fourth bent radiating branch 34 and the first bent radiating branch 31. The third gap 301 can be adjusted and designed by the width of the fourth bending radiation branch 34, and the third gap 301 can be 1-2mm.

In the present disclosure, as shown in fig. 2, each of the first bent radiating branch 31, the second bent radiating branch 32 and the fourth bent radiating branch 34 has an inclined section forming an angle with the main radiating branch 30 and a straight section extending in the same direction, and the length of the second bent radiating branch 32 is greater than the length of the fourth bent radiating branch 34. In other embodiments, the length of the fourth bent radiating branch 34 can be increased appropriately.

Fourth gaps are respectively formed between the top of the second bent radiation branch 32 and the first radiation part 11, between the two sides of the second bent radiation branch and the first bent radiation branch 31 and the second radiation part 12, and between the bottom of the second bent radiation branch and the third bent radiation branch 33. The fourth gaps are formed around the second bent radiating branches 32, and the size of the fourth gaps can be adjusted by increasing or decreasing the width of the second bent radiating branches 32, so as to adjust the high-frequency operating frequency.

Specifically, in an exemplary embodiment of the present disclosure, the third bent radiation branch 33 includes a "l" section, a "one" section, and an inverted "pi" section connected in this order, the second bent radiation branch 32 has an inflection section matching the shape of the "l" section, and a side half section of the inverted "pi" section extends between the second bent radiation branch 32 and the second radiation portion 12. In other embodiments, the third bent radiating branch 33 may have a serpentine shape, a zigzag shape, or the like bent in various directions, and simultaneously form the gap and the second coupling space 35, so as to further increase the radiating length and the radiating area, thereby realizing the coverage of high-frequency signals.

In addition, in the present disclosure, at least one of the radiation body 1, the first parasitic radiator 2, and the second parasitic radiator 3 has a ground gap provided toward the coupling space. The gap can be designed for avoiding some components or can be designed separately for increasing the coupling space. In this embodiment, the notch may have any suitable shape, such as a circle, an ellipse, or a square.

In the present disclosure, the antenna structure includes a first feeding point 100 disposed on the radiating body 1, a second feeding point 200 disposed on the first parasitic radiator 2, and a third feeding point 300 disposed on the second parasitic radiator 3. The settings for the specific feed point locations may be adjusted as desired.

As shown in fig. 3 and 4, in the antenna structure provided by the present disclosure, an IFA antenna is used as a main radiator, radiation is performed by using pi-type parasitic elements, meander line parasitic elements, various gaps and coupling spaces, the peak efficiency of low frequency B20 is-8 dB, the peak efficiency of medium and high frequency is-6.4 dB, the average efficiency is-8 dB, the overall efficiency is more than-10 dB, and coverage of low frequency, medium frequency and high frequency signals is achieved without adding a switch.

According to a second aspect of the embodiments of the present disclosure, there is provided a terminal device including the above antenna structure. The terminal device has all the beneficial effects of the antenna structure, and redundant description is not repeated here. This terminal equipment can be for cell-phone, flat board etc. to the cell-phone is taken as an example, and this antenna structure can set up the side position at the bottom plate, can radium-shine on the support in the cell-phone, can not occupy too much space when satisfying the antenna performance, utilizes an antenna, covers high-frequency + B20 in small-size region, realizes the cover of LMH frequency channel simultaneously.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It will be understood that the present disclosure is not limited to the precise arrangements that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. An antenna structure comprising a radiating body, a first parasitic radiator and a second parasitic radiator, wherein,

2. The antenna structure of claim 1, wherein the Π -type radiating arm comprises a first radiating arm connected to the main radiating arm, and a second radiating arm and a third radiating arm connected to the first radiating arm in parallel, the third radiating arm extending beyond the first radiating portion and forming a first coupling space with the second radiating portion.

3. The antenna structure of claim 2, wherein the second radiating arm and the third radiating arm have a first gap therebetween, and wherein the third radiating arm and the main radiating arm have a second gap therebetween.

4. The antenna structure of claim 2, wherein the second parasitic radiator includes a first bent radiating branch, a second bent radiating branch, a third bent radiating branch and a fourth bent radiating branch connected to the main radiating branch, the first bent radiating branch extends to be connected to the third radiating arm, the second bent radiating branch extends to extend into the first coupling space, and the third bent radiating branch is bent multiple times and forms a second coupling space with the second bent radiating branch.

5. The antenna structure of claim 4, wherein a third gap is provided between the fourth meandering radiating branch and the first meandering radiating branch.

6. The antenna structure of claim 4, wherein the first bent radiating branch, the second bent radiating branch and the fourth bent radiating branch each have an inclined section forming an angle with the main radiating branch and a straight section extending in the same direction, and the length of the second bent radiating branch is greater than that of the fourth bent radiating branch.

7. The antenna structure according to claim 4, wherein fourth gaps are respectively formed between the top of the second bent radiating branch and the first radiating portion, between two sides of the second bent radiating branch and the first bent radiating branch and the second radiating portion, and between the bottom of the second bent radiating branch and the third bent radiating branch.

8. The antenna structure according to claim 4, wherein the third bent branch includes a "L" section, a "I" section, and an inverted "pi" section connected in series, the second bent branch has a bent section matching the shape of the "L" section, and a side half section of the inverted "pi" section extends between the second bent branch and the second radiation portion.

9. The antenna structure of claim 1, characterized in that the antenna structure comprises a first feed point arranged on the radiating body, a second feed point arranged on a first parasitic radiator and a third feed point arranged on the second parasitic radiator.

10. The antenna structure according to any of claims 1-9, characterized in that the radiating body generates signals for covering medium frequencies, the first parasitic radiator is connected at the top of the radiating body, the generated signals are for covering low frequencies, the second parasitic radiator is arranged at the bottom of the radiating body, the generated signals are for covering high frequencies.

11. A terminal device, characterized in that it comprises an antenna arrangement according to any of claims 1-10.