CN220106889U

CN220106889U - Antenna module and electronic equipment

Info

Publication number: CN220106889U
Application number: CN202321364800.2U
Authority: CN
Inventors: 王再跃; 汪建安; 安凯; 罗阳
Original assignee: Hefei Lianbao Information Technology Co Ltd
Current assignee: Hefei Lianbao Information Technology Co Ltd
Priority date: 2023-05-31
Filing date: 2023-05-31
Publication date: 2023-11-28
Anticipated expiration: 2033-05-31

Abstract

The utility model discloses an antenna module and electronic equipment, wherein the antenna module comprises a substrate, a reference ground conductor and one or more radiation units, wherein the reference ground conductor and the one or more radiation units are arranged on the substrate; the radiating unit comprises an inverted F-shaped radiating unit and a coupling loop radiating unit, one end part of the inverted F-shaped radiating unit is connected with a reference ground conductor, the other end part of the inverted F-shaped radiating unit is provided with a feed part, and the inverted F-shaped radiating unit is provided with a first resonant frequency band; the coupling loop radiating element is connected with the feed part through an inverted F-shaped radiating element, is connected with the reference ground conductor and forms a ring-shaped structure surrounding the inverted F-shaped radiating element together with the reference ground conductor, and has a second resonance frequency band and a frequency doubling frequency band, wherein the frequency doubling frequency band is twice that of the second resonance frequency band and is close to the first resonance frequency band. Therefore, the coverage range of the high-frequency band of the antenna module can be widened under the limited size range.

Description

Antenna module and electronic equipment

Technical Field

The present utility model relates to the field of antenna modules, and in particular, to an antenna module and an electronic device.

Background

In recent years, WIFI wireless network technology has been rapidly developed. The WIFI 6 wireless network technology starts to be applied from 2017 and supports two frequency bands of 2.4GHz and 5 GHz. The WIFI 6E wireless network technology starts to be applied from 2021, and is expanded to simultaneously support three frequencies of 2.4GHz, 5GHz and 6GHz on the basis that the WIFI 6 supports two frequency bands of 2.4GHz and 5 GHz. According to the definition of the WIFI alliance, WIFI7 to be applied to the market in the future will also support three frequencies of 2.4GHz, 5GHz and 6GHz simultaneously. The frequency coverage of the 6GHz frequency band is from 5925MHz to 7125MHz, and the total frequency is 1200MHz, so that the device capacity can be obviously improved, and the bottleneck of insufficient frequency spectrum resources of the existing WIFI wireless network technology is solved.

Along with the development of the WIFI technology, higher requirements are also put forward on the antenna module of the electronic device. The antenna of the conventional electronic device generally only supports two frequency bands of 2.4GHz and 5GHz, and along with the application of WIFI 6E technology and the upcoming application of WIFI7 technology, the antenna module of the electronic device needs to widen the frequency coverage of the high-frequency band.

Disclosure of Invention

The utility model provides an antenna module and electronic equipment aiming at the technical problems, and the technical scheme of the utility model is as follows.

The first aspect of the utility model provides an antenna module, comprising a substrate, a reference ground conductor and one or more radiating units, wherein the reference ground conductor and the one or more radiating units are arranged on the substrate; the radiation unit includes:

one end part of the inverted-F-shaped radiating element is connected with the reference ground conductor, the other end part of the inverted-F-shaped radiating element is provided with a feed part, and the inverted-F-shaped radiating element is provided with a first resonant frequency band;

the coupling loop radiating element is connected with the feed part through the inverted-F-shaped radiating element, is connected with the reference ground conductor and forms a ring-shaped structure surrounding the inverted-F-shaped radiating element together with the reference ground conductor, and is provided with a second resonance frequency band and a frequency doubling frequency band, and the frequency doubling frequency band is twice as high as the second resonance frequency band and is close to the first resonance frequency band.

In some embodiments, the reference ground conductor extends along a first direction, the antenna module includes a plurality of radiating elements that are sequentially disposed along the first direction, and the plurality of radiating elements are all located on the same side of the reference ground conductor, an isolation conductor is disposed between adjacent radiating elements, one end of the isolation conductor is connected with the reference ground conductor, and the other end of the isolation conductor protrudes out of or is flush with the radiating element in a second direction perpendicular to the first direction.

In some embodiments, the coupling loop radiating element comprises:

one end of the first radiator is connected with the reference ground conductor, the other end of the first radiator is connected with the isolation conductor, and the first radiator, the isolation conductor and the reference ground conductor jointly form the annular structure;

the second radiator is arranged in the annular structure, one side of the second radiator is connected with the feed part through the inverted F-shaped radiating unit, and the other side of the second radiator is abutted to the first radiator and coupled with the first radiator.

In some embodiments, the first radiator is L-shaped, the first radiator includes a first metal strip extending along the second direction and a second metal strip extending along the first direction, one end of the first metal strip is connected to the reference ground, one end of the second metal strip is connected to the other end of the first metal strip, and the other end of the second metal strip is connected to the isolation conductor.

In some embodiments, the second radiator is L-shaped, the second radiator includes a third metal strip extending along a second direction and a fourth metal strip extending along the first direction, one end of the third metal strip is connected with the inverted F-shaped radiating element, one end of the fourth metal strip is connected with the other end of the third metal strip, and the other end of the fourth metal strip extends toward a direction close to the isolation conductor.

In some embodiments, the inverted F-shaped radiating element comprises:

a fifth metal strip formed by extending one end of the third metal strip towards the direction close to the reference ground conductor, wherein one end of the fifth metal strip far away from the third metal strip is provided with the feed part;

a sixth metal strip disposed between the fifth metal strip and the isolated conductor, the sixth metal strip extending in the second direction, one end of the sixth metal strip being connected to the reference ground conductor;

and the seventh metal strip extends along the first direction, one end of the seventh metal strip is connected to the joint of the third metal strip and the fifth metal strip, and the other end of the seventh metal strip extends towards the direction close to the isolation conductor, is connected with the sixth metal strip and protrudes out of the sixth metal strip.

In some embodiments, the first resonant frequency band and the doubled frequency band collectively cover 5125MHz to 7125MHz frequency bands; the second resonant frequency band covers 2400MHz-2500MHz frequency band.

In some embodiments, a gap width between the other side of the second radiator and the first radiator is 0.5mm to 1.5mm.

In some embodiments, the width of the isolation conductor in the first direction is 2mm to 30mm.

A second aspect of the utility model provides an electronic device comprising an antenna module as described above.

The antenna module comprises a coupling loop radiating unit and an inverted F-shaped radiating unit. The inverted F-shaped radiating unit is arranged inside the annular structure of the coupling loop radiating unit, so that the structure is compact, and the miniaturization of the antenna module is benefited. The coupling Loop radiating element is equivalent to a coupling Loop (Loop) antenna, and the coupling Loop radiating element not only can generate resonance in a second resonance frequency band with lower frequency, but also can generate resonance in a frequency multiplication frequency band with higher frequency based on a frequency multiplication effect. The inverted-F-shaped radiating element is equivalent to a PIFA antenna, and can generate resonance in a first resonance frequency band with higher frequency, the frequency doubling frequency band is close to the first resonance frequency band, and the frequency doubling frequency band and the first resonance frequency band can widen the frequency coverage range of the high-frequency band of the antenna module. Therefore, the coverage range of the high-frequency band of the antenna module can be widened under the limited size range.

Drawings

Fig. 1 is a schematic structural diagram of an antenna module according to an embodiment of the utility model;

FIG. 2 is a simulated standing wave diagram of an antenna module according to an embodiment of the present utility model;

fig. 3 is a schematic diagram of an isolation simulation result of an antenna module according to an embodiment of the present utility model.

Reference numerals illustrate:

10-a substrate;

20-a reference ground conductor;

30-radiating elements; 31-an inverted F-shaped radiating element; 311-fifth metal bar; 312-sixth metal strips; 313-seventh metal strips; a 32-coupled loop radiating element; 321-a first metal strip; 322-a second metal strip; 323-a third metal bar; 324-fourth metal strips; 33-a power feed;

40-isolating conductors.

Detailed Description

Various aspects and features of the present utility model are described herein with reference to the accompanying drawings.

It should be understood that various modifications may be made to the embodiments of the application herein. Therefore, the above description should not be taken as limiting, but merely as exemplification of the embodiments. Other modifications within the scope and spirit of the utility model will occur to persons of ordinary skill in the art.

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and, together with a general description of the utility model given above, and the detailed description of the embodiments given below, serve to explain the principles of the utility model.

These and other characteristics of the utility model will become apparent from the following description of a preferred form of embodiment, given as a non-limiting example, with reference to the accompanying drawings.

The above and other aspects, features and advantages of the present utility model will become more apparent in light of the following detailed description when taken in conjunction with the accompanying drawings.

Specific embodiments of the present utility model will be described hereinafter with reference to the accompanying drawings; however, it is to be understood that the disclosed embodiments are merely exemplary of the utility model, which can be embodied in various forms. Well-known and/or repeated functions and constructions are not described in detail to avoid obscuring the utility model in unnecessary or unnecessary detail. Therefore, specific structural and functional details disclosed herein are not intended to be limiting, but merely as a basis for the claims and as a representative basis for teaching one skilled in the art to variously employ the present utility model in virtually any appropriately detailed structure.

The specification may use the word "in one embodiment," "in another embodiment," "in yet another embodiment," or "in other embodiments," which may each refer to one or more of the same or different embodiments in accordance with the utility model.

It should also be understood that the first, second, third, fourth and various numerical numbers referred to herein are merely descriptive convenience and are not intended to limit the scope of the utility model.

An embodiment of the present utility model provides an antenna module, fig. 1 is a schematic structural diagram of an antenna module according to an embodiment of the present utility model, and referring to fig. 1, the antenna module according to an embodiment of the present utility model may include a substrate 10, a reference ground conductor 20, and one or more radiating elements 30.

The substrate 10 may be formed of a nonconductive dielectric substrate such as a glass cloth substrate, a paper substrate, an epoxy paper-based substrate, or an epoxy glass nonwoven fabric substrate. The reference ground conductor 20 and the one or more radiating elements 30 are both arranged on the substrate 10. Alternatively, the reference ground conductor 20 and the radiating element 30 may each be disposed on one side surface of the substrate 10. For example, the reference ground conductor 20 and the radiating element 30 may each be attached or printed on one side surface of the substrate 10.

The radiating element 30 comprises an inverted F-shaped radiating element 31 and a coupling loop radiating element 32. One end of the inverted-F-shaped radiating element 31 is connected to the reference ground conductor 20, and the other end of the inverted-F-shaped radiating element 31 is provided with a feeding portion 33, and the feeding portion 33 is used for connecting with a wireless transceiver module of an electronic device. The inverted-F radiating element 31 has a first resonant frequency band.

The coupling loop radiating element 32 is connected to the feeding portion 33 through the inverted-F radiating element 31, and the coupling loop radiating element 32 is connected to the reference ground conductor 20 and forms a loop structure surrounding the inverted-F radiating element 31 together with the reference ground conductor 20. The coupling-loop radiating element 32 not only has a second resonant frequency band, but also has a frequency-doubled frequency band based on the frequency-doubled effect. The frequency multiplication frequency band is twice the second resonance frequency band and is close to the first resonance frequency band.

It should be noted that, the frequency multiplication frequency band twice the second resonance frequency band is understood to include that the frequency multiplication frequency band is just twice or approximately twice the second resonance frequency band, and that the frequency multiplication frequency band is close to the first resonance frequency band is understood to include that the frequency multiplication frequency band is close to the first resonance frequency band, that the frequency multiplication frequency band is joined with the first resonance frequency band, or that the frequency multiplication frequency band is at least partially overlapped with the first resonance frequency band.

The antenna module of the embodiment of the utility model comprises a coupling loop radiating element 32 and an inverted-F radiating element 31. The inverted-F-shaped radiating element 31 is arranged inside the annular structure of the coupling loop radiating element 32, so that the structure is compact, and the miniaturization of the antenna module is facilitated. The coupling Loop radiating element 32 corresponds to a coupling Loop (Loop) antenna, and the coupling Loop radiating element 32 can generate resonance not only in the second resonance frequency band with a lower frequency, but also in the frequency multiplication frequency band with a higher frequency based on the frequency multiplication effect. The inverted-F radiating element 31 corresponds to a PIFA antenna, and is capable of generating resonance in a first resonant frequency band with a higher frequency, the frequency multiplication frequency band is close to the first resonant frequency band, and the frequency coverage range of the high-frequency band of the antenna module can be widened by the frequency multiplication frequency band and the first resonant frequency band. Therefore, the coverage range of the high-frequency band of the antenna module can be widened under the limited size range.

Taking this antenna module for carrying out WIFI wireless network communication as an example, the first resonance frequency band can include the frequency channel between C and D in the diagram 2, the frequency multiplication frequency channel can include the frequency channel between D and E in the diagram 2, the first resonance frequency channel with the frequency multiplication frequency channel can cover 5.125GHz to 7.125GHz frequency channel jointly, can cover two high frequency channels of 5G frequency channel and 6G frequency channel that WIFI 6E and WIFI7 supported. The second resonant frequency band may include a frequency band between H and I in fig. 2, and the second resonant frequency band may cover a 2.4GHz-2.5GHz frequency band, and may cover a 2.4GHz frequency band supported by WIFI.

In some embodiments, the reference ground conductor 20 extends along a first direction, the antenna module includes a plurality of radiating elements 30 sequentially disposed along the first direction, and the plurality of radiating elements 30 are all located on the same side of the reference ground conductor 20, and an isolation conductor 40 is disposed between adjacent radiating elements 30, one end of the isolation conductor 40 is connected to the reference ground conductor 20, and the other end of the isolation conductor 40 protrudes from the radiating element 30 or is flush with the radiating element 30 in a second direction perpendicular to the first direction. In this way, the isolation between the radiation units 30 can be improved, and interference between the same-frequency signals can be avoided.

Alternatively, the reference ground conductor 20 may be formed by a reference ground metal strip. Taking the substrate 10 with dimensions of 90mm×10mm×0.4mm as an example, the reference ground metal strip may be attached to the first side surface of the substrate 10, and the reference ground metal strip may be disposed along a long edge of the first side surface, and the reference ground metal strip may have dimensions of 90mm×1.66mm.

Alternatively, taking the antenna module including two radiating elements 30 as an example, a reference ground metal strip may be disposed at a bottom side edge of a first side surface, the isolation conductor 40 and the two radiating elements 30 may be disposed at a top of the reference ground metal strip, the isolation conductor 40 may be disposed at a middle of the first side surface in the first direction, the two radiating elements 30 may be symmetrically disposed at two sides of the isolation conductor 40, and the other end of the isolation conductor 40 may be flush with the two radiating conductors in the second direction.

Alternatively, still taking the dimensions of the substrate 10 as 90mm×10mm×0.4mm as an example, the width of the isolating conductor 40 in the first direction is 2mm to 30mm. For example, the isolation conductor 40 may be formed by a rectangular metal sheet.

Fig. 3 is a diagram of simulation results of isolation of an antenna module according to an embodiment of the present utility model, and referring to fig. 3, the antenna module according to the embodiment of the present utility model has good isolation near 2.4GHz, 2.5GHz, 5.15GHz, 5.85GHz, 5.925GHz and 7.125 GHz.

In some embodiments, the coupling loop radiating element 32 includes a first radiator and a second radiator. One end of the first radiator is connected with the reference ground conductor 20, the other end of the first radiator is connected with the isolation conductor 40, and the first radiator, the isolation conductor 40 and the reference ground conductor 20 together form the annular structure. The second radiator is disposed in the annular structure, one side of the second radiator is connected with the feeding portion 33 through the inverted-F-shaped radiating element 31, and the other side of the second radiator is close to the first radiator and is coupled with the first radiator. That is, the other side of the second radiator is close to the first radiator, but has a gap with the first radiator, as shown in fig. 1 a, so that capacitive coupling can be formed between the second radiator and the first radiator, forming a coupling Loop antenna, and the coupling Loop radiating element 32 has better anti-interference performance.

Optionally, a gap width between the other side of the second radiator and the first radiator is 0.5mm to 1.5mm. Thus, a better coupling effect can be formed between the first radiator and the second radiator. Preferably, the width of the gap between the other side of the second radiator and the first radiator may be 0.6mm, so as to form a better coupling effect.

In some embodiments, both the first and second radiators may be L-shaped. The first radiator includes a first metal bar 321 extending along the second direction and a second metal bar 322 extending along the first direction, one end of the first metal bar 321 is connected to the reference ground, one end of the second metal bar 322 is connected to the other end of the first metal bar 321, and the other end of the second metal bar 322 is connected to the isolation conductor 40. The second radiator may include a third metal bar 323 extending in the second direction and a fourth metal bar 324 extending in the first direction, one end of the third metal bar 323 is connected with the inverted-F radiating element 31, one end of the fourth metal bar 324 is connected with the other end of the third metal bar 323, and the other end of the fourth metal bar 324 extends in a direction approaching the isolation conductor 40. The coupling loop radiating element 30 is structured and compact, which is beneficial to downsizing the antenna module.

For example, the antenna module may include two radiating elements 30 having a substantially rectangular shape and a size of 90mm×10mm×0.4mm, and the reference ground conductor 20, the isolation conductor 40, and the two radiating elements 30 may be disposed on a first side surface of the substrate 10, and the first side surface may have a first long side and a second long side disposed opposite to each other, and a first short side and a second short side disposed opposite to each other.

The reference ground conductor 20 may be formed by a reference ground metal strip that may extend along the first long side. The isolation conductor 40 may be disposed at a middle portion of the substrate 10 in the first direction. The two radiating elements 30 are symmetrically arranged on opposite sides of the isolating conductor 40 in the first direction.

The first metal bar 321 of one of the radiation units 30 may extend along a first short side, one end of the first metal bar 321 may be connected to a reference ground metal bar, and the other end of the first metal bar 321 may extend to the other top corner of the substrate 10. The second metal strip 322 of the one radiating unit 30 may extend along the second long side, one end of the second metal strip 322 may be connected to one end of the first metal strip 321, and the other end of the second metal strip 322 may extend to the middle of the first side surface in the first direction and be connected to the isolation conductor 40.

The third metal strip 323 and the fourth metal strip 324 of the one radiating element 30 may be disposed in a ring structure, one end of the third metal strip 323 may be connected with the inverted-F radiating element 31, the other end of the third metal strip 323 may extend to a position close to the second metal strip 322, one end of the fourth metal strip 324 may be connected with the other end of the third metal strip 323, the fourth metal strip 324 may be parallel to the second metal strip 322, and the other end of the fourth metal strip 324 may extend in a direction close to the isolating conductor 40. In this way, an equivalent capacitance can be formed between the fourth metal strip 324 and the second metal strip 322, such that a capacitive coupling is formed between the first and second radiators.

Alternatively, the total length of the first metal strip 321 and the second metal strip 322 may be between 35mm and 45mm, and the total length of the third metal strip 323 and the fourth metal strip 324 may be between 4mm and 8mm. Thus, the center point of the second resonant frequency band of the coupling loop radiating unit 32 is near 2.45GHz, and the center point of the frequency doubling frequency band is near 5GHz, so that the coupling loop radiating unit has a better communication effect in the 2.4GHz frequency band supported by WIFI and a better communication effect in the 5GHz frequency band supported by WIFI.

Preferably, the length of the first metal bar 321 may be 8.34mm, the length of the second metal bar 322 may be 30mm, and the total length of the third metal bar 323 and the fourth metal bar 324 may be 5.8mm. As shown in fig. 2, in this size range, the center point of the second resonant frequency band of the coupling loop radiation unit 32 is near 2.45GHz, the center point of the frequency doubling frequency band is between 5GHz and 5.15GHz, and the communication effects are better at both 2.4GHz and 5GHz supported by WIFI.

In some embodiments, the inverted F-shaped radiation element 31 includes: a fifth metal bar 311, a sixth metal bar 312, and a seventh metal bar 313. The fifth metal strip 311 is formed by extending one end of the third metal strip 323 toward the direction approaching the reference ground conductor 20, and one end of the fifth metal strip 311 away from the third metal strip 323 is provided with a feeding portion 33. The sixth metal strip 312 is disposed between the fifth metal strip 311 and the isolated conductor 40, the sixth metal strip 312 extends along the second direction, and one end of the sixth metal strip 312 is connected to the reference ground conductor 20. The seventh metal strip 313 extends along the first direction, one end of the seventh metal strip 313 is connected to the joint of the third metal strip 323 and the fifth metal strip 311, and the other end of the seventh metal strip 313 extends in a direction close to the isolation conductor 40, is connected to the sixth metal strip 312, and protrudes from the sixth metal strip 312 to form a protruding portion, as shown in fig. 1B, for performing signal radiation and structure. In this way, the fifth metal strip 311, the sixth metal strip 312 and the seventh metal strip 313 can form a radiation structure similar to an inverted F shape, and radiation and reception of the feeding and grounding signals are realized by skillfully utilizing the free ends of the inverted F-shaped radiation unit 31, respectively, so that the structural design is ingenious.

Optionally, the length of the protruding portion in the first direction may be 1mm to 4mm, so that the first resonant frequency band can approach the frequency multiplication frequency band and jointly cover the frequency multiplication frequency band from 5.125GHz to 7.125 GHz. Preferably, the length of the protrusion in the first direction may be 2mm. As shown in fig. 2, in this size range, the center point of the first resonance frequency band of the inverted-F radiating element 31 falls between 6GHz and 7GHz and is located near 7 GHz. So, the central point of first resonance frequency channel with stagger certain distance between the central point of frequency doubling frequency channel, not only make first resonance frequency channel with frequency doubling frequency channel can link up each other, make frequency doubling frequency channel mainly fall between 5GHz to 5.85GHz moreover, first resonance frequency channel mainly falls between 5.85GHz to 7.125GHz, can cover 5.125GHz to 7.125GHz frequency channel jointly, all have better communication effect in great frequency range.

The embodiment of the utility model also provides electronic equipment, which comprises the antenna module set in any embodiment. Optionally, the electronic device includes, but is not limited to, a notebook computer, a tablet computer, a smart phone, a personal digital assistant, and the like. The antenna module has the advantages that the structure is simple, and the antenna module has the frequency coverage range of money delivery in a high-frequency band, so that the electronic equipment applying the antenna module also has the advantages.

The above embodiments are only exemplary embodiments of the present utility model and are not intended to limit the present utility model, the scope of which is defined by the claims. Various modifications and equivalent arrangements of this utility model will occur to those skilled in the art, and are intended to be within the spirit and scope of the utility model.

Claims

1. An antenna module, comprising a substrate, a reference ground conductor and one or more radiating elements arranged on the substrate; the radiation unit includes:

2. The antenna module of claim 1, wherein the reference ground conductor extends along a first direction, the antenna module comprises a plurality of radiating elements sequentially arranged along the first direction, the radiating elements are all located on the same side of the reference ground conductor, an isolation conductor is arranged between adjacent radiating elements, one end of the isolation conductor is connected with the reference ground conductor, and the other end of the isolation conductor protrudes out of or is flush with the radiating element in a second direction perpendicular to the first direction.

3. The antenna module of claim 2, wherein the coupling loop radiating element comprises:

4. An antenna module according to claim 3, wherein the first radiator is L-shaped, the first radiator comprises a first metal strip extending in the second direction and a second metal strip extending in the first direction, one end of the first metal strip is connected to the reference ground, one end of the second metal strip is connected to the other end of the first metal strip, and the other end of the second metal strip is connected to the isolation conductor.

5. An antenna module according to claim 3, wherein the second radiator is L-shaped, the second radiator comprises a third metal strip extending in a second direction and a fourth metal strip extending in the first direction, one end of the third metal strip is connected to the inverted F-shaped radiating element, one end of the fourth metal strip is connected to the other end of the third metal strip, and the other end of the fourth metal strip extends in a direction close to the isolation conductor.

6. The antenna module of claim 5, wherein the inverted-F radiating element comprises:

7. The antenna module of claim 3, wherein the first resonant frequency band and the multiplied frequency band collectively cover 5125MHz to 7125MHz frequency bands; the second resonant frequency band covers 2400MHz-2500MHz frequency band.

8. The antenna module of claim 7, wherein a gap width between the other side of the second radiator and the first radiator is 0.5mm to 1.5mm.

9. The antenna module of claim 7, wherein the width of the isolation conductor in the first direction is 2mm to 30mm.

10. An electronic device comprising an antenna module as claimed in any one of claims 1 to 9.