CN217719963U - Antenna structure and terminal equipment - Google Patents

Abstract

The utility model provides an antenna structure and terminal equipment relates to antenna technical field. The antenna structure includes: the first radiator, the second radiator, the third radiator and the resonant circuit; the first radiator comprises a first end part and a second end part; the first end part is electrically connected with the first power supply, and the second end part is grounded; the second radiator comprises a third end part and a fourth end part; the third end part is electrically connected with the second power supply, and the fourth end part is grounded; the third radiator comprises a fifth end part and a sixth end part, the fifth end part is electrically connected with the third end part, and the sixth end part and the first end part are arranged at intervals; the first end of the resonant circuit is electrically connected with the third radiator, and the second end of the resonant circuit is grounded. The utility model discloses an antenna structure can cover Wi-Fi6E frequency channel, satisfies the communication demand of terminal equipment at Wi-Fi6E frequency channel.

Description

Antenna structure and terminal equipment

Technical Field

The utility model relates to an antenna technology field, in particular to antenna structure and terminal equipment.

Background

In recent years, with the increasing demand of people for the network transmission speed of the terminal equipment, the WIFI technology is continuously developed, and the Wi-Fi6E era is entered at present.

However, the terminal device in the related art usually supports only Wi-Fi5 and Wi-Fi6, but not Wi-Fi6E, mainly because the working bandwidth of the antenna structure is insufficient and cannot cover the Wi-Fi6E frequency band.

SUMMERY OF THE UTILITY MODEL

The utility model provides an antenna structure and terminal equipment, the work bandwidth that can solve antenna structure is not enough, can not cover the problem of Wi-Fi6E frequency channel.

The technical scheme is as follows:

in one aspect, an antenna structure is provided, the antenna structure including: the antenna comprises a first radiating body, a second radiating body, a third radiating body and a resonant circuit;

the first radiator comprises a first end part and a second end part; the first end part is electrically connected with a first power supply, and the second end part is grounded;

the second radiator comprises a third end part and a fourth end part; the third end part is electrically connected with a second power supply, and the fourth end part is grounded;

the third radiator comprises a fifth end part and a sixth end part, the fifth end part is electrically connected with the third end part, and the sixth end part and the first end part are arranged at intervals;

the first end of the resonant circuit is electrically connected with the third radiator, and the second end of the resonant circuit is grounded.

In some embodiments, the first end of the resonant circuit is electrically connected to the third radiator at a position near the sixth end.

In some embodiments, the resonant circuit includes a first capacitor and a first inductor connected in series, one end of the first capacitor is connected to the third radiator, and the other end is grounded through the first inductor.

In some embodiments, the antenna structure further comprises a first matching circuit; one end of the first matching circuit is electrically connected with the first end part, and the other end of the first matching circuit is connected with the first power supply.

In some embodiments, the first matching circuit includes a first resonance unit, a second resonance unit, and a second capacitor;

the first resonance unit is connected with the second capacitor in series, one end of the first resonance unit is connected with the first end part, and the other end of the first resonance unit is connected with one end of the second capacitor;

the other end of the second capacitor is connected with the first power supply and one end of the second resonance unit respectively, and the other end of the second resonance unit is grounded.

In some embodiments, the first resonant cell comprises a third capacitor and a second inductor, the third capacitor and the second inductor being connected in parallel;

and/or the presence of a gas in the gas,

the second resonance unit includes a fourth capacitor and a third inductor, which are connected in parallel.

In some embodiments, the antenna structure further comprises a second matching circuit; one end of the second matching circuit is electrically connected with the third end part, and the other end of the second matching circuit is connected with the second power supply.

In some embodiments, the second matching circuit comprises a third resonant cell, a fifth capacitor, and a fourth inductor;

the third end portions are electrically connected to one end of the fourth inductor and one end of the third resonant unit, respectively;

the other end of the fourth inductor is grounded; the other end of the third resonant unit is electrically connected with the second power supply and is grounded through the fifth capacitor.

In some embodiments, the third resonant unit includes a sixth capacitor and a fifth inductor, the sixth capacitor and the fifth inductor are connected in series, one end of the sixth capacitor is electrically connected to the third terminal, and the other end is electrically connected to the second feeding source through the fifth inductor.

On the other hand, a terminal device is provided, which comprises the antenna structure of the utility model, a metal frame and a circuit board;

the first radiator, the second radiator and the third radiator are respectively located on the metal frame, and the resonant circuit, the first feed source and the second feed source are located on the circuit board.

In some embodiments, the metal bezel includes a long bezel and a wide bezel, and the first radiator, the second radiator and the third radiator are located on the long bezel and extend in the same direction as the long bezel.

The utility model provides a beneficial effect that technical scheme brought includes at least:

the utility model discloses an antenna structure, including first irradiator, second irradiator and resonant circuit, third irradiator and resonant circuit can constitute a band-pass filtering structure for antenna structure can construct new current mode, thereby can increase antenna structure's work bandwidth, make it can cover the Wi-Fi6E frequency channel, satisfy the communication demand of terminal equipment at Wi-Fi6E frequency channel.

Drawings

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

Fig. 1 is a schematic structural diagram of an antenna structure provided in an embodiment of the present invention;

fig. 2 is a schematic structural diagram of an antenna structure according to another embodiment of the present invention;

fig. 3 is a schematic structural diagram of a first radiator and a first matching circuit according to another embodiment of the present invention;

fig. 4 is a schematic structural diagram of a second radiator and a second matching circuit according to another embodiment of the present invention;

fig. 5 is a schematic structural view of an antenna structure of the related art;

fig. 6 is a graph of S-parameter curves of embodiments of the present invention and related art;

fig. 7 is a Smith chart of an embodiment of the present invention and related art;

fig. 8 is an efficiency graph of an embodiment of the present invention and related art;

fig. 9 is a schematic diagram of a terminal device according to an embodiment of the present invention.

The reference numerals in the figures are denoted respectively by:

the utility model discloses in corresponding fig. 1-4, 9:

1. a first radiator; 11. a first end portion; 12. a second end portion; 2. a second radiator; 21. a third end portion; 22. a fourth end portion; 3. a third radiator; 31. a fifth end portion; 32. a sixth end portion; 4. a resonant circuit; 41. a first capacitor; 42. a first inductor; 5. a first matching circuit; 51. a first resonance unit; 511. a third capacitor; 512. a second inductor; 52. a second resonance unit; 521. a fourth capacitor; 522. a third inductor; 53. a second capacitor; 6. a second matching circuit; 61. a third resonance unit; 611. a sixth capacitor; 612. a fifth inductor; 62. a fifth capacitor; 63. a fourth inductor;

7. a metal frame; 71. a long frame; 72. a wide frame; 8. a circuit board;

01. a first power supply; 02. a second power supply;

in fig. 5 corresponding to the related art:

1', a first radiator; 2', a second radiator.

Detailed Description

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

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships based on the orientations and positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be considered as limiting the present invention.

Wi-Fi6 (or WiFi6 for writing), also known as 802.11ax, is the latest generation of Wi-Fi industry standards following Wi-Fi5 (702.11 ac). New technologies such as OFDMA, uplink/downlink MU-MIMO, BSS coloring, TWT and the like are introduced into the Wi-Fi6 standard, performance is improved in a spanning mode, bandwidth and the number of concurrent users are improved by 4 times compared with Wi-Fi5, time delay is lower, and energy is saved.

Wi-Fi6E is an enhanced version of Wi-Fi6 (E stands for Extended), and the Wi-Fi6E extends the functions of the Wi-Fi6 to a 6GHz frequency band, so that higher concurrency, lower time delay and larger bandwidth are provided. The Wi-Fi alliance at month 1, 2021 announced that Wi-Fi6E authentication has been provided.

The most prominent enhancement of Wi-Fi6E is to extend Wi-Fi6 to the 6GHz band. The characteristics Wi-Fi6E of other Wi-Fi6 still support.

The 6GHz band is a globally uniform continuous block of spectrum, ranging from 5925MHz to 7125MHz, for a total spectrum of 1200MHz, meaning that 7 160MHz channels, or 14 80MHz channels, or 29 40MHz channels or 59 20MHz channels are provided in addition.

Wi-Fi6E devices will be forward compatible with Wi-Fi6 and previous Wi-Fi standards. However, to utilize the new 6GHz channels in Wi-Fi6E, a 6GHz capable device must be used. In other words, the full features of Wi-Fi6E can be used only if a terminal (e.g., PC or smart phone) supporting Wi-Fi6E is used in conjunction with an AP supporting Wi-Fi 6E.

In the related art, a frame IFA (inversed antenna) antenna form is generally adopted, and as shown in fig. 5, the first radiator 1 'and the second radiator 2' are in a head-to-head IFA antenna form, the Wi-Fi low frequency 2.4GHz is realized by using a 1/4 wavelength mode of the IFA antenna, and the Wi-Fi high frequency 5G is realized by using a high-order mode of its own minor-branch in combination with a high-order mode of the head-to-head low frequency antenna. But the high-frequency bandwidth of the scheme is narrow, the Wi-Fi6E frequency band (5150-5850, 5925-7125 MHz) is difficult to completely cover, and the sideband efficiency is poor.

Therefore, the utility model provides an antenna structure can increase antenna structure's work bandwidth, makes it can cover Wi-Fi6E frequency channel, satisfies the communication demand of terminal equipment at Wi-Fi6E frequency channel.

In order to make the objects, technical solutions and advantages of the present invention clearer, embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

Fig. 1 is a schematic structural diagram of an antenna structure according to an embodiment of the present invention.

In one aspect, with reference to fig. 1, this embodiment provides an antenna structure, where the antenna structure includes: a first radiator 1, a second radiator 2, a third radiator 3 and a resonant circuit 4.

The first radiator 1 comprises a first end 11 and a second end 12; the first end part 11 is electrically connected with a first power supply 01, and the second end part 12 is grounded; the second radiator 2 comprises a third end 21 and a fourth end 22; the third end part 21 is electrically connected with a second power supply, and the fourth end part 22 is grounded; the third radiator 3 includes a fifth end 31 and a sixth end 32, the fifth end 31 is electrically connected to the third end 21, and the sixth end 32 is spaced apart from the first end 11.

A first end of the resonant circuit 4 is electrically connected to the third radiator 3, and a second end of the resonant circuit 4 is grounded.

The antenna structure of this embodiment includes the first radiator 1, the second radiator 2 and the resonant circuit 4, and the third radiator 3 and the resonant circuit 4 can constitute a band-pass filter structure, so that the antenna structure can construct a new current mode, and thus the working bandwidth of the antenna structure can be increased, the antenna structure can cover the Wi-Fi6E frequency band, and the communication requirement of the terminal device in the Wi-Fi6E frequency band is met.

In some possible implementations, the first radiator 1 is used for LB and B32 band communication, and the second radiator 2 is used for Wi-Fi6E band communication.

Referring to fig. 1, in some embodiments, the first end of the resonant circuit 4 is electrically connected to the third radiator 3 near the sixth end 32, so as to reduce the physical length of the antenna structure, and the antenna structure can be miniaturized, so that the antenna structure can be applied to a smaller terminal device.

Illustratively, the first end of the resonant circuit 4 is electrically connected to the sixth end portion 32.

Fig. 2 is a schematic structural diagram of an antenna structure according to another embodiment of the present invention.

As shown in fig. 2, in some embodiments, the resonant circuit 4 includes a first capacitor 41 and a first inductor 42, the first capacitor 41 and the first inductor 42 are connected in series, one end of the first capacitor 41 is connected to the third radiator 3, and the other end is grounded through the first inductor 42.

By adjusting the parameter values of the first capacitor 41 and the first inductor 42 in the resonant circuit 4, the resonance position of the new radiation mode can be adjusted, thereby widening the operating bandwidth of the antenna structure.

As shown in connection with fig. 2, in some embodiments, the antenna structure further comprises a first matching circuit 5; one end of the first matching circuit 5 is electrically connected to the first end portion 11, and the other end is connected to the first power supply 01. In this embodiment, the first matching circuit 5 can perform matching of parameters such as impedance and the like on the first radiator 1, and reduce standing waves and the like, so as to ensure the radiation performance of the first radiator 1.

Fig. 3 is a schematic structural diagram of the first radiator 1 and the first matching circuit 5 according to another embodiment of the present invention.

As shown in connection with fig. 3, in some embodiments, the first matching circuit 5 comprises a first resonance unit 51, a second resonance unit 52 and a second capacitor 53; the first resonance unit 51 and the second capacitor 53 are connected in series, one end of the first resonance unit 51 is connected with the first end part 11, and the other end is connected with one end of the second capacitor 53; the other end of the second capacitor 53 is connected to the first power supply 01 and one end of the second resonance unit 52, respectively, and the other end of the second resonance unit 52 is grounded.

Thus, the first matching circuit 5 can perform impedance matching, reduce standing waves, and the like for the first radiator 1, and ensure the radiation performance of the first radiator 1.

As shown in connection with fig. 3, in some embodiments, the first resonance unit 51 includes a third capacitor 511 and a second inductor 512, the third capacitor 511 and the second inductor 512 being connected in parallel.

As shown in connection with fig. 3, in some embodiments, the second resonant unit 52 includes a fourth capacitor 521 and a third inductor 522, the fourth capacitor 521 and the third inductor 522 being connected in parallel.

As shown in connection with fig. 2, in some embodiments, the antenna structure further comprises a second matching circuit 6; one end of the second matching circuit 6 is electrically connected to the third end portion 21, and the other end is connected to the second power supply. In this embodiment, the second matching circuit 6 can perform matching of parameters such as impedance and the like on the second radiator 2, and reduce standing waves and the like, so as to ensure the radiation performance of the first radiator 1.

Fig. 4 is a schematic structural diagram of a second radiator 2 and a second matching circuit 6 according to another embodiment of the present invention.

As shown in connection with fig. 4, in some embodiments, the second matching circuit 6 comprises a third resonance unit 61, a fifth capacitor 62 and a fourth inductor 63; the third end portions 21 are electrically connected to one end of the fourth inductor 63 and one end of the third resonance unit 61, respectively; the other end of the fourth inductor 63 is grounded; the other end of the third resonance unit 61 is electrically connected to the second power supply and is grounded through the fifth capacitor 62.

As shown in connection with fig. 4, in some embodiments, the third resonance unit 61 includes a sixth capacitor 611 and a fifth inductor 612, the sixth capacitor 611 and the fifth inductor 612 are connected in series, one end of the sixth capacitor 611 is electrically connected to the third end 21, and the other end is electrically connected to the second feeding source through the fifth inductor 612.

Fig. 6 is a S parameter graph of the embodiment of the present invention and the related art, the S parameter graph of the embodiment corresponds to TWO (TWO frame point mode) for TWO, the S parameter graph of the related art corresponds to SINGLE (SINGLE frame point mode) for TWO, as can be seen from the graph, in the working frequency band (5150 MHz-7125 MHz) required by Wi-Fi6E, the whole S11 (return loss) of the curve corresponding to the antenna structure of the embodiment is lower than-5 dB, and the antenna structure of the related art is only lower than-5 dB around 5150MHz-5850MHz, which illustrates that the coverage effect of the antenna structure of the embodiment to the working frequency band required by Wi-Fi6E is better.

Fig. 7 is a Smith chart of an embodiment of the present invention and related art; as can be seen from the figure, compared with the related art, the antenna structure of this embodiment generates a new loop at high frequency (Mark), i.e. a new resonant mode generated by the antenna structure of this embodiment.

Fig. 8 is an efficiency graph of an embodiment of the present invention and related art; as can be seen from the figure, compared with the related art, the high frequency bandwidth (corresponding to top. Efficiency-TWO in the figure) of the antenna structure of the present embodiment is increased to about 4dB higher than that of 5150MHz-5850MHz of the related art (corresponding to top. Efficiency-SINGLE in the figure) to about 5150MHz-7125mhz, and that of 7ghz (corresponding to rad. Efficiency-TWO in the figure).

On the other hand, as shown in fig. 9, the present embodiment provides a terminal device, where the terminal device includes the antenna structure of the present invention, and the metal frame 7 and the circuit board 8; the first radiator 1, the second radiator 2 and the third radiator 3 are respectively positioned on the metal frame 7, and the resonant circuit 4, the first power supply 01 and the second power supply are positioned on the circuit board 8.

The terminal device of this embodiment, using the antenna structure of this embodiment, can utilize the 6GHz channel in Wi-Fi6E, and has advantages of high concurrency, large bandwidth, low latency, and the like.

In some embodiments, the metal bezel 7 includes a long bezel 71 and a wide bezel 72, and the first radiator 1, the second radiator 2, and the third radiator 3 are located on the long bezel 71 and extend in the same direction as the long bezel 71.

Although the present invention is conventionally referred to a smart phone, those skilled in the art will readily appreciate that the present technology is not limited to smart phones. The present materials and techniques may be applied to any number of electronic devices that may include, but are not limited to, phones and mobile devices, watches, glasses and other wearable technologies including fitness equipment, handheld electronic devices, laptop computers, tablet computers and other computers, and other devices that may benefit from the use of wireless charging technology.

It should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected" and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; may be a mechanical connection; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature "on," "above" and "over" the second feature may include the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present specification, reference to the description of the terms "certain embodiments," "one embodiment," "some embodiments," "illustrative embodiments," "example," "specific example," or "some examples" means 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 invention.

The above description is only an embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims (11)

1. An antenna structure, characterized in that the antenna structure comprises: a first radiator (1), a second radiator (2), a third radiator (3) and a resonant circuit (4);

the first radiator (1) comprises a first end (11) and a second end (12); the first end part (11) is electrically connected with a first power supply (01), and the second end part (12) is grounded;

the second radiator (2) comprises a third end (21) and a fourth end (22); the third end part (21) is electrically connected with a second power supply (02), and the fourth end part (22) is grounded;

the third radiator (3) comprises a fifth end part (31) and a sixth end part (32), the fifth end part (31) is electrically connected with the third end part (21), and the sixth end part (32) and the first end part (11) are arranged at intervals;

the first end of the resonant circuit (4) is electrically connected with the third radiator (3), and the second end of the resonant circuit (4) is grounded.

2. The antenna structure according to claim 1, characterized in that the first end of the resonant circuit (4) is electrically connected to the third radiator (3) near the sixth end (32).

3. An antenna structure according to claim 1, characterized in that the resonant circuit (4) comprises a first capacitor (41) and a first inductor (42), the first capacitor (41) and the first inductor (42) being connected in series, one end of the first capacitor (41) being connected to the third radiator (3) and the other end being connected to ground through the first inductor (42).

4. The antenna structure according to claim 1, characterized in that the antenna structure further comprises a first matching circuit (5); one end of the first matching circuit (5) is electrically connected with the first end part (11), and the other end of the first matching circuit is connected with the first power supply (01).

5. The antenna structure according to claim 4, characterized in that the first matching circuit (5) comprises a first resonance unit (51), a second resonance unit (52) and a second capacitor (53);

the first resonance unit (51) and the second capacitor (53) are connected in series, one end of the first resonance unit (51) is connected with the first end part (11), and the other end is connected with one end of the second capacitor (53);

the other end of the second capacitor (53) is connected to one end of the first power supply (01) and one end of the second resonant unit (52), and the other end of the second resonant unit (52) is grounded.

6. An antenna structure according to claim 5, characterized in that the first resonance unit (51) comprises a third capacitor (511) and a second inductor (512), the third capacitor (511) and the second inductor (512) being connected in parallel;

and/or the presence of a gas in the atmosphere,

the second resonance unit (52) includes a fourth capacitor (521) and a third inductor (522), and the fourth capacitor (521) and the third inductor (522) are connected in parallel.

7. The antenna structure according to claim 1, characterized in that the antenna structure further comprises a second matching circuit (6); one end of the second matching circuit (6) is electrically connected with the third end part (21), and the other end is connected with the second power supply (02).

8. An antenna arrangement according to claim 7, characterized in that the second matching circuit (6) comprises a third resonance unit (61), a fifth capacitor (62) and a fourth inductor (63);

the third end portion (21) is electrically connected to one end of the fourth inductor (63) and one end of the third resonance unit (61), respectively;

the other end of the fourth inductor (63) is grounded; the other end of the third resonant unit (61) is electrically connected to the second power supply (02) and is grounded through the fifth capacitor (62).

9. An antenna structure according to claim 8, characterized in that the third resonance unit (61) comprises a sixth capacitor (611) and a fifth inductor (612), the sixth capacitor (611) and the fifth inductor (612) being connected in series, one end of the sixth capacitor (611) being electrically connected to the third terminal (21), the other end being electrically connected to the second feed (02) via the fifth inductor (612).

10. A terminal device, characterized in that it comprises an antenna structure according to any of claims 1-9, as well as a metal rim (7) and a circuit board (8);

the first radiating body (1), the second radiating body (2) and the third radiating body (3) are respectively located on the metal frame (7), and the resonant circuit (4), the first power feed source (01) and the second power feed source (02) are located on the circuit board (8).

11. The terminal device according to claim 10, wherein the metal bezel (7) comprises a long bezel (71) and a wide bezel (72), and the first radiator (1), the second radiator (2) and the third radiator (3) are located on the long bezel (71) and extend in the same direction as the long bezel (71).

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