Broadband antenna and electronic equipment

Abstract

The invention relates to the technical field of antennas, and discloses a broadband antenna and electronic equipment. The broadband antenna comprises a dielectric plate, a conductor plate and a plurality of feeder lines, the conductor plate is fixedly laid on one side face of the dielectric plate in the thickness direction of the dielectric plate, and a plurality of antenna units are arranged on the two sides of the conductor plate in the width direction of the conductor plate at intervals. Each antenna unit comprises grooves formed in the two sides of the conductor plate in the width direction of the conductor plate and conductor pieces arranged in the grooves, each conductor piece is fixedly arranged on one side face of the dielectric plate, and a gap exists between each conductor piece and the inner side of the corresponding groove; a separation groove is arranged between two adjacent antenna units. And each feeder line is respectively used for coupling and feeding to the conductor plate and the corresponding conductor sheet. According to the broadband antenna, the bandwidth can be improved, and meanwhile, the good isolation degree is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of antennas, and in particular to a broadband antenna and electronic equipment thereof. Background Art

[0002] Starting from the first generation of mobile communications (1G), it has experienced the continuous evolution of the 2G, 3G, and 4G eras, and now 5G is being deployed and implemented in full swing. As a barometer of scientific and technological progress and happiness in life, mobile communications have penetrated into all aspects of people's lives. From 1G to 5G, people's intuitive feeling is the increase in transmission rate. At present, 5G has planned two working frequency bands, namely the Sub-6 band and the millimeter wave band. The Sub-6 band has basically been divided. Different countries use different frequency bands. In order to meet roaming purposes, the broadband design of the antenna is very necessary, and in order to improve the working efficiency of the antenna, the antenna needs to have good isolation.

[0003] However, the inventors have found that it is difficult for the antenna in the prior art to improve the bandwidth while ensuring good isolation. Summary of the invention

[0004] The purpose of the embodiments of the present invention is to provide a broadband antenna to improve its bandwidth while ensuring good isolation.

[0005] In order to solve the above technical problems, an embodiment of the present invention provides a broadband antenna, including a dielectric plate, a conductor plate and a plurality of feed lines, wherein the conductor plate is fixedly laid on a side surface of the dielectric plate along its thickness direction, and a plurality of antenna units are spaced apart on both sides of the conductor plate along its width direction; each of the antenna units comprises a groove arranged on both sides of the conductor plate along its width direction and a conductor sheet arranged in the groove, each of the conductor sheets is fixedly arranged on one side surface of the dielectric plate, and a gap is provided between the conductor sheets and the inner side of the corresponding groove; a separation groove is provided between two adjacent antenna units; and each of the feed lines is used for coupling and feeding power to the conductor plate and the corresponding conductor sheet.

[0006] Compared with the prior art, the embodiments of the present invention are that the grooves in each antenna unit can receive or send electromagnetic information, and the conductor sheet can also receive or send electromagnetic information, that is, the antenna unit in the present invention adds a conductor sheet on the basis of the groove, so that the groove and the conductor sheet of the antenna unit can receive or send electromagnetic information at the same time, and introduce a new resonance mode by introducing a parasitic unit (conductor sheet), thereby expanding the bandwidth of the antenna; and, a separation groove is provided between two adjacent antenna units to isolate the electrical signals between the antenna units, avoid the influence on the working efficiency of the antenna unit due to mutual interference of the electrical signals between the antenna units, and thereby improve the isolation of the broadband antenna; therefore, the broadband antenna can ensure better isolation while improving the bandwidth.

[0007] In addition, the conductor plate includes a bottom plate and flanges arranged on both sides of the bottom plate along the width direction, and the flanges extend along the thickness direction, and the dielectric plate is fixedly laid in the space formed by the bottom plate and the flanges; the groove includes a first groove portion and a second groove portion that are interconnected, the first groove portion is arranged on the flange and passes through the flange along the thickness direction, and the second groove portion is arranged on the bottom plate at a position corresponding to the first groove portion and extends along the width direction. This arrangement enables the broadband antenna to better adapt to electronic equipment.

[0008] In addition, the conductor sheet includes a first sheet portion and a second sheet portion, the second sheet portion is fixedly laid on the one side surface of the dielectric plate, the first sheet portion is connected to the second sheet portion and extends along the thickness direction; and the first sheet portion is arranged in the first groove portion, and there is a gap between the first sheet portion and the inner side of the first groove portion; the second sheet portion is arranged in the second groove portion, and there is a gap between the second sheet portion and the inner side of the second groove portion, so as to ensure that the conductor sheet and the conductor plate are independent of each other.

[0009] In addition, the first groove portion, the second groove portion, the first sheet portion, and the second sheet portion are all rectangular.

[0010] In addition, the separation groove includes a third groove portion and a fourth groove portion that are interconnected, the third groove portion is arranged on the flange and penetrates the flange along the thickness direction, and the fourth groove portion is arranged on the bottom plate at a position corresponding to the third groove portion and extends along the width direction. In this way, the third groove portion can isolate the first groove portions on two adjacent antenna units, and the fourth groove portion can isolate the second groove portions on two adjacent antenna units, so as to ensure the isolation between adjacent antenna units on the broadband antenna.

[0011] In addition, the fourth groove portion includes a first part and a second part connected in a "T" shape, the first part extends along the width direction, and one end of the first part is connected to one end of the third groove portion, and the other end is connected to the second part, and the second part extends along the length direction of the conductor plate.

[0012] In addition, the feed line is arranged on the dielectric plate and includes a first line portion and a second line portion, the first line portion extends along the length direction of the dielectric plate, the second line portion is connected to the first line portion and extends along the width direction; and the first line portion is coupled and fed with the conductor sheet; the second line portion is coupled and fed with the bottom plate. In this way, the feed line is coupled and fed with the conductor sheet and the conductor plate through the first line portion and the second line portion, respectively, to excite electrical signals on each antenna unit.

[0013] In addition, the bottom plate and the flange are both rectangular. This shape of the conductor plate is more suitable for electronic equipment.

[0014] An embodiment of the present invention further provides an electronic device, comprising the above-mentioned broadband antenna. The broadband antenna of the electronic device introduces a new resonance mode by introducing a parasitic unit (conductor sheet), thereby expanding the bandwidth of the antenna; and a separation groove is also provided between the antenna units of the broadband antenna to isolate the electrical signals between the antenna units, thereby avoiding the influence on the working efficiency of the antenna units caused by the mutual interference of the electrical signals between the antenna units, and thus improving the isolation of the broadband antenna; therefore, the broadband antenna of the electronic device can ensure good isolation while improving the bandwidth. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0016] Figure 1 is a schematic structural diagram of a broadband antenna provided by an embodiment of the present invention without a dielectric plate;

[0017] Figure 2 is a schematic structural diagram of two adjacent antenna units of a broadband antenna provided according to an embodiment of the present invention;

[0018] Figure 3 is a schematic structural diagram of an antenna unit of a broadband antenna provided according to an embodiment of the present invention;

[0019] Figure 4 is a schematic structural diagram of a broadband antenna provided according to an embodiment of the present invention;

[0020] Figure 5 is a comparison diagram of the real input impedance of an antenna in the prior art and a broadband antenna provided by an embodiment of the present invention;

[0021] Figure 6 is a comparison diagram of S parameters of an antenna in the prior art and a broadband antenna provided by an embodiment of the present invention;

[0022] Figure 7 is a diagram showing changes in the S parameters of the antenna unit of the broadband antenna provided by an embodiment of the present invention;

[0023] Figure 8 is a diagram showing changes in isolation between some antenna units of a broadband antenna provided by an embodiment of the present invention;

[0024] Fig. 9 is a graph showing changes in the total efficiency of some antenna units of a broadband antenna provided by an embodiment of the present invention;

[0025] Fig.10 is an envelope correlation coefficient diagram between some antenna units of the broadband antenna provided by an embodiment of the present invention;

[0026] Fig.11 is the radiation pattern of antenna unit No. 1 of the broadband antenna provided by an embodiment of the present invention at 3.5 GHz, 4.5 GHz, and 5.5 GHz;

[0027] Fig.12 It is the radiation pattern of the second antenna unit of the broadband antenna provided by an embodiment of the present invention at 3.5 GHz, 4.5 GHz, and 5.5 GHz.

[0028] Reference numerals:

[0029] 10: dielectric plate;

[0030] 20: conductor plate; 210: bottom plate; 220: flange;

[0031] 30: feeder line; 310: first line portion; 320: second line portion; 330: feeder port;

[0032] 40: antenna unit; 410: groove; 411: first groove portion; 412: second groove portion; 420: conductor sheet; 421: first sheet portion; 422: second sheet portion;

[0033] 50: separation groove; 510: third groove portion; 520: fourth groove portion; 521: first portion; 522: second portion;

[0034] 1: antenna unit 1; 2: antenna unit 2; 3: antenna unit 3; 4: antenna unit 4; 5: antenna unit 5; 6: antenna unit 6; 7: antenna unit 7; 8: antenna unit 8;

[0035] X: length direction of the conductor plate / dielectric plate;

[0036] Y: width direction of the conductor plate;

[0037] Z: thickness direction of dielectric plate. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical scheme and advantages of the embodiments of the present invention clearer, the following will be described in detail with reference to the accompanying drawings. However, it will be appreciated by those skilled in the art that in the various embodiments of the present invention, many technical details are provided in order to enable the reader to better understand the present application. However, even without these technical details and various changes and modifications based on the following embodiments, the technical scheme claimed in the present application can be implemented.

[0039] In the embodiments of the present invention, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. These terms are mainly used to better describe the present invention and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific direction, or to be constructed and operated in a specific direction.

[0040] In addition, some of the above terms may be used to express other meanings in addition to indicating a direction or position relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those skilled in the art, the specific meanings of these terms in the present invention can be understood according to specific circumstances.

[0041] In addition, the terms "installed", "set", "provided with", "opened", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] In addition, the terms "first", "second", etc. are mainly used to distinguish different devices, elements or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance and quantity of the indicated devices, elements or components. Unless otherwise specified, "plurality" means two or more.

[0043] The embodiment of the present invention provides a broadband antenna. Figure 1-Figure 3 , including a dielectric plate 10, a conductor plate 20 and a plurality of feed lines 30, wherein the conductor plate 20 is fixedly laid on a side surface of the dielectric plate 10 along its thickness direction Z, and a plurality of antenna units 40 are spaced apart on both sides of the conductor plate 20 along its width direction Y; each antenna unit 40 comprises a groove 410 arranged on both sides of the conductor plate 20 along its width direction Y and a conductor sheet 420 arranged in the groove 410, wherein the conductor sheet 420 is fixedly arranged on one side surface of the dielectric plate 10, and a gap exists between each conductor sheet 420 and the inner side of the corresponding groove 410; a separation groove 50 is arranged between two adjacent antenna units 40; each feed line 30 is used for coupling and feeding power to the conductor plate 20 and the corresponding conductor sheet 420.

[0044] Compared with the prior art, in the embodiments of the present invention, the groove 410 in each antenna unit 40 can receive or send electromagnetic information, and the conductor sheet 420 can also receive or send electromagnetic information, that is, the antenna unit 40 in the present invention adds a conductor sheet 420 on the basis of the groove 410, so that the groove 410 and the conductor sheet 420 of the antenna unit 40 can simultaneously receive or send electromagnetic information, and a new resonant mode is introduced by introducing a parasitic unit (conductor sheet 420), thereby expanding the bandwidth of the antenna; and, a separation groove 50 is provided between two adjacent antenna units 40 to isolate the electrical signals between the antenna units 40, avoid the influence on the working efficiency of the antenna unit 40 due to mutual interference of the electrical signals between the antenna units 40, and thereby improve the isolation of the broadband antenna; therefore, the broadband antenna can ensure better isolation while improving the bandwidth.

[0045] Specifically, the conductor plate 20 and the dielectric plate 10, and the conductor sheet 420 and the dielectric plate 10 can be connected by bonding, welding, etc. The number of antenna units 40 provided on the conductor plate 20 can be two, three, six, ten, etc. Along the width direction Y, the size of the separation groove 50 can be larger than the size of the groove 410, can be equal to the size of the groove 410, or can be smaller than the size of the groove 410, which can be set according to actual design and use requirements, and this embodiment does not specifically limit this. In addition, the dielectric plate 10 is made of insulating material, which is used to support and connect the conductor plate 20 and the conductor sheet 420. Both the conductor plate 20 and the conductor sheet 420 are made of conductive materials, and are generally metal materials.

[0046] It should be noted that there is a gap between each conductor sheet 420 and the inner side of the corresponding groove 410, so that each conductor sheet 420 is independent from the conductor plate 20. In addition, the separation groove 50 can be set to a straight groove, a wavy groove, etc.

[0047] Further, see Figure 1 and Figure 4The conductor plate 20 includes a bottom plate 210 and flanges 220 arranged on both sides of the bottom plate 210 along the width direction Y, and the flanges 220 extend along the thickness direction Z. The dielectric plate 10 is fixedly laid in the space formed by the bottom plate 210 and the flanges 220; the groove 410 includes a first groove portion 411 and a second groove portion 412 that are interconnected. The first groove portion 411 is arranged on the flange 220 and penetrates the flange 220 along the thickness direction Z. The second groove portion 412 is arranged at a position on the bottom plate 210 corresponding to the first groove portion 411 and extends along the width direction Y. This arrangement enables the broadband antenna to better adapt to electronic equipment.

[0048] Furthermore, the conductor sheet 420 includes a first sheet portion 421 and a second sheet portion 422, the second sheet portion 422 is fixedly laid on one side surface of the dielectric plate 10, the first sheet portion 421 is connected to the second sheet portion 422 and extends along the thickness direction Z; and the first sheet portion 421 is arranged in the first groove portion 411, and there is a gap between the first sheet portion 421 and the inner side of the first groove portion 411; the second sheet portion 422 is arranged in the second groove portion 412, and there is a gap between the second sheet portion 422 and the inner side of the second groove portion 412, so as to ensure that the conductor sheet 420 and the conductor plate 20 are independent of each other.

[0049] Specifically, see Figure 2 and Figure 3 The conductor plate 20 provided with the groove 410 is folded along the dotted line in the figure and in the direction of the arrow in the figure, so that the conductor plate 20 forms a flange 220 relative to the bottom plate 210. At the same time, the first sheet 421 and the second sheet 422 are also formed by folding the conductor sheet 420 along the dotted line in the figure and in the direction of the arrow in the figure.

[0050] Furthermore, the shapes of the groove 410 and the conductor sheet 420 before folding can be respectively set to semicircular, rectangular, triangular, etc., and the shapes of the groove 410 and the conductor sheet 420 can be the same or different. Preferably, in this embodiment, the first groove portion 411, the second groove portion 412, the first sheet portion 421 and the second sheet portion 422 are all rectangular.

[0051] Similarly, the conductor plate 20 is folded so that the separation groove 50 forms a third groove portion 510 and a fourth groove portion 520 that are interconnected. The third groove portion 510 is arranged on the flange 220 and penetrates the flange 220 along the thickness direction Z. The fourth groove portion 520 is arranged at a position corresponding to the third groove portion 510 on the bottom plate 210 and extends along the width direction Y. In this way, the third groove portion 510 can isolate the first groove portion 411 on two adjacent antenna units 40, and the fourth groove portion 520 can isolate the second groove portion 412 on two adjacent antenna units 40, so as to ensure the isolation between adjacent antenna units 40 on the broadband antenna.

[0052] Furthermore, the fourth groove portion 520 includes a first portion 521 and a second portion 522 connected in a “T” shape, the first portion 521 extends along the width direction Y, and one end of the first portion 521 is connected to one end of the third groove portion 510, and the other end is connected to the second portion 522, and the second portion 522 extends along the length direction X of the conductor plate 20.

[0053] Further, the feed line 30 is disposed on the dielectric plate 10 and includes a first line portion 310 and a second line portion 320, wherein the first line portion 310 extends along the length direction X of the dielectric plate 10, and the second line portion 320 is connected to the first line portion 310 and extends along the width direction Y; and the first line portion 310 is coupled and fed with the conductor sheet 420; and the second line portion 320 is coupled and fed with the bottom plate 210. In this way, the feed line 30 is coupled and fed with the conductor sheet 420 and the conductor plate 20 through the first line portion 310 and the second line portion 320, respectively, so as to excite electrical signals on each antenna unit 40.

[0054] Specifically, a feeding port 330 is provided between one end of the second wire portion 320 away from the first wire portion 310 and the base plate 210. The feeding port 330 is respectively connected to the base plate 210 and the second wire portion 320, and transfers energy to the second wire portion 320, so that the second wire portion 320 is coupled and fed to the conductor plate 20, and transfers energy to the first wire portion 310 through the second wire portion 320, so that the first wire portion 310 is coupled and fed to the conductor plate 420.

[0055] Furthermore, in order to better adapt to electronic equipment, the conductor plate 20 and the dielectric plate 10 in this embodiment are both configured in a rectangular shape, and the bottom plate 210 and the flange 220 of the folded conductor plate 20 are also rectangular.

[0056] Furthermore, the antenna units 40 and the dividing grooves 50 arranged on both sides of the conductor plate 20 along the width direction Y thereof may be arranged symmetrically or asymmetrically, and the specific arrangement may be based on factors such as the specific layout and installation position of the broadband antenna in the electronic device, and this embodiment does not make any specific limitation on this.

[0057] See also Figure 5 and Figure 6 , Figure 5 is a comparison diagram of the real input impedance of the antenna in the prior art and the broadband antenna provided by the embodiment of the present invention, Figure 6 It is a comparison diagram of S parameters of the antenna in the prior art and the broadband antenna provided by the embodiment of the present invention. It should be noted that the S parameter is a scattering parameter used to evaluate the performance of the antenna unit 40 in reflecting and transmitting signals. Figure 5 and Figure 6 In the example, case A is a curve showing a change in the real input impedance of an antenna in the prior art, and case B is a curve showing a change in the real input impedance of a broadband antenna provided by an embodiment of the present invention. Figure 5 It can be seen that within the range of 2 GHz to 10 GHz, the antenna corresponding to case A has only three resonance modes, while the broadband antenna corresponding to case B has five resonance modes. This verifies that the broadband antenna in the embodiment of the present invention can well introduce new resonance modes, thereby expanding the working bandwidth of the antenna. Figure 6 It can be seen that the bandwidth of Case B is significantly expanded compared to that of Case A.

[0058] Furthermore, in this embodiment, taking the broadband antenna provided with 8 antenna units 40 as an example, the isolation between the antenna units 40 is described. Figure 1 As shown, the eight antenna units 40 are respectively arranged on both sides of the conductor plate 20 along its width direction Y, and are antenna unit No. 1, antenna unit No. 2, antenna unit No. 3, antenna unit No. 4, antenna unit No. 5, antenna unit No. 6, antenna unit No. 7, antenna unit No. 8 and antenna unit No. 8.

[0059] See also Figure 7 , Figure 7 is a diagram showing a change in the S parameters of the antenna unit of the broadband antenna provided by an embodiment of the present invention, Figure 7 In the equation, S11 and S22 are the input reflection coefficients. Figure 7 It can be seen that the -10 dB bandwidth of the antenna unit 40 can cover 3 GHz to 8.9 GHz, and the relative bandwidth can reach 99%.

[0060] See also Figure 8 , Figure 8 is a diagram showing the degree of isolation between some antenna units of a broadband antenna provided by an embodiment of the present invention, Figure 7 In the figure, S12 is the isolation between the first antenna unit 1 and the second antenna unit 2, S23 is the isolation between the second antenna unit 2 and the third antenna unit 3, and S18 is the isolation between the first antenna unit 1 and the eighth antenna unit 8. Figure 7 It can be seen from the figure that the isolation between the antenna units 40 is higher than -14.1 dB within the effective working bandwidth (3 GHz-8.9 GHz), indicating that the broadband antenna has good isolation.

[0061] See also Fig. 9 , Fig. 9 is a diagram showing changes in the total efficiency of some antenna units of a broadband antenna provided by an embodiment of the present invention, Fig. 9 In the figure, Ant.1 is antenna unit 1, Ant.2 is antenna unit 1, and Fig. 9 It can be seen that within the effective working bandwidth (3 GHz-8.9 GHz), the total efficiency of the antenna unit 40 is higher than 40%.

[0062] See also Fig.10 , Fig.10 is an envelope correlation coefficient diagram between some antenna units of the broadband antenna provided by an embodiment of the present invention, Fig.10 In the equation, ECC12 is the envelope correlation coefficient between antenna unit 1 and antenna unit 2, ECC23 is the envelope correlation coefficient between antenna unit 2 and antenna unit 3, ECC18 is the envelope correlation coefficient between antenna unit 1 and antenna unit 8, and ECC27 is the envelope correlation coefficient between antenna unit 2 and antenna unit 7. Fig.10 It can be seen that the envelope correlation coefficients are all less than 0.025, which is much smaller than the envelope correlation coefficient value of 0.3 specified in the antenna design of common electronic equipment, indicating that the broadband antenna has good diversity performance.

[0063] See also Fig.11 and Fig.12 , Fig.11 is the radiation pattern of antenna unit No. 1 of the broadband antenna provided by an embodiment of the present invention at 3.5 GHz, 4.5 GHz, and 5.5 GHz, Fig.12 is the radiation pattern of the second antenna unit provided in an embodiment of the present invention at 3.5 GHz, 4.5 GHz, and 5.5 GHz, Fig.11 and Fig.12 In the figure, xoz represents the xoz plane, yoz represents the yoz plane, and Phi represents the phase angle. Fig.11 and Fig.12 That is, by comparing the radiation patterns of different antenna units of the same broadband antenna, it can be seen that the broadband antenna has a relatively stable radiation direction within the entire working frequency band, and the maximum radiation directions of antenna unit No. 1 and antenna unit No. 2 do not point to each other. Therefore, the ECC (envelope correlation coefficient) value of the antenna unit 40 of the broadband antenna is very low.

[0064] Therefore, the broadband antenna has the characteristics of broadband, high isolation, low ECC, etc., so that it can be well applied to electronic devices.

[0065] The embodiment of the present invention also provides an electronic device, including the above-mentioned broadband antenna. The broadband antenna of the electronic device introduces a new resonant mode by introducing a parasitic unit (conductor sheet 420), thereby expanding the bandwidth of the antenna; and, a separation slot 50 is also provided between the antenna units 40 of the broadband antenna to isolate the electrical signals between the antenna units 40, thereby avoiding the influence on the working efficiency of the antenna units 40 caused by the mutual interference of the electrical signals between the antenna units 40, and thus improving the isolation of the broadband antenna; therefore, the broadband antenna of the electronic device can ensure good isolation while improving the bandwidth. In addition, the electronic device can be a communication device such as a mobile phone and a computer.

[0066] The above is a detailed introduction to "a broadband antenna and an electronic device" provided by the embodiments of the present invention. Specific examples are used herein to illustrate the principles and embodiments of the present invention. The description of the above embodiments is only used to help understand the idea of ​​the present invention. There may be changes in the specific embodiments and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A broadband antenna, characterized in that: It comprises a dielectric plate, a conductor plate and a plurality of feed lines, wherein the conductor plate is fixedly laid on a side surface of the dielectric plate along its thickness direction, and a plurality of antenna units are spaced apart on both sides of the conductor plate along its width direction; Each of the antenna units comprises grooves arranged on both sides of the conductor plate along the width direction thereof and conductor sheets arranged in the grooves, and each of the conductor sheets is fixedly arranged on one side surface of the dielectric plate and has a gap with the inner side of the corresponding groove; A separation slot is provided between two adjacent antenna units; each feed line is used for coupling and feeding the conductor plate and the corresponding conductor sheet.

2. The broadband antenna according to claim 1, characterized in that: The conductor plate comprises a bottom plate and flanges arranged on both sides of the bottom plate along the width direction, and the flanges extend along the thickness direction, and the dielectric plate is fixedly laid in a space formed by the bottom plate and the flanges; The groove includes a first groove portion and a second groove portion that are interconnected, the first groove portion is arranged on the flange and penetrates the flange along the thickness direction, and the second groove portion is arranged on the bottom plate at a position corresponding to the first groove portion and extends along the width direction.

3. The broadband antenna according to claim 2, characterized in that: The conductor sheet includes a first sheet portion and a second sheet portion, the second sheet portion is fixedly laid on the one side surface of the dielectric plate, the first sheet portion is connected to the second sheet portion and extends along the thickness direction; and, The first sheet portion is disposed in the first groove portion, and there is a gap between the first sheet portion and the inner side of the first groove portion; The second sheet portion is disposed in the second groove portion, and a gap exists between the second sheet portion and the inner side of the second groove portion.

4. The broadband antenna according to claim 3, characterized in that: The first groove portion, the second groove portion, the first sheet portion, and the second sheet portion are all rectangular.

5. The broadband antenna according to any one of claims 2 to 4, characterized in that: The dividing groove includes a third groove portion and a fourth groove portion which are interconnected. The third groove portion is arranged on the flange and penetrates the flange along the thickness direction. The fourth groove portion is arranged on the bottom plate at a position corresponding to the third groove portion and extends along the width direction.

6. The broadband antenna according to claim 5, characterized in that: The fourth slot portion includes a first portion and a second portion connected in a "T" shape, the first portion extends along the width direction, one end of the first portion is connected to one end of the third slot portion, and the other end is connected to the second portion, and the second portion extends along the length direction of the conductor plate.

7. The broadband antenna according to any one of claims 2 to 4, characterized in that: The feed line is disposed on the dielectric plate and includes a first line portion and a second line portion, wherein the first line portion extends along the length direction of the dielectric plate, and the second line portion is connected to the first line portion and extends along the width direction; and The first line portion is coupled to the conductor sheet for power feeding; the second line portion is coupled to the bottom plate for power feeding.

8. The broadband antenna according to any one of claims 2 to 4, characterized in that: The bottom plate and the flange are both rectangular.

9. An electronic device, characterized in that: Comprising the broadband antenna as described in any one of claims 1-8.

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