Broadband antenna

Abstract

The utility model discloses a broadband antenna, and the antenna comprises an antenna substrate; a first antenna unit arranged on the antenna substrate, wherein the first antenna unit comprises a first radiator, a first V-shaped corner cut, a second V-shaped corner cut and a microstrip asymptote; the second antenna unit is arranged on the antenna substrate and comprises a first L-shaped corner cut, a second L-shaped corner cut and a plurality of radiators; the shell is used for wrapping the antenna substrate; the connector is used for connecting the broadband antenna and a terminal; wherein the first antenna unit is suitable for being coupled with the second antenna unit through self resonance, so that the broadband antenna is switched to a target communication frequency band. Therefore, through self resonance and mutual coupling of the first antenna unit and the second antenna unit on the antenna substrate, frequency switching of a plurality of target communication frequency bands is realized, so that convenience and applicability of the broadband antenna are improved, and the broadband high-gain requirement is met.

Description

Technical Field

[0001] The utility model relates to the technical field of antennas, in particular to a broadband antenna. Background Art

[0002] As a converter, an antenna can transform the guided wave propagating on the transmission line into an electromagnetic wave propagating in an unbounded medium (usually free space), or perform the opposite transformation. It is usually a component used to transmit or receive electromagnetic waves in radio equipment. However, with the advent of the 5G era, compared with traditional gateway devices, modern gateway devices gradually have problems such as insufficient support for antenna frequency bands and small coverage range, resulting in limited communication capabilities. Summary of the Utility Model

[0003] The utility model aims to solve at least one of the technical problems in the related art to some extent. For this reason, an object of the utility model is to propose an antenna that can meet the frequency requirements of multiple communication frequency bands, thereby improving the convenience and applicability of the broadband antenna.

[0004] To achieve the above object, the broadband antenna proposed by the utility model includes: an antenna substrate; a first antenna unit disposed on the antenna substrate, the first antenna unit including a first radiator, a first V-shaped cut angle, a second V-shaped cut angle, and a microstrip asymptote; a second antenna unit disposed on the antenna substrate, the second antenna unit including a first L-shaped cut angle, a second L-shaped cut angle, and a plurality of radiators; a housing for wrapping the antenna substrate; a connector for connecting the broadband antenna to a terminal; wherein, the first antenna unit is adapted to resonate with the second antenna unit by itself and mutually couple, so that the broadband antenna switches to a target communication frequency band.

[0005] According to the broadband antenna of the utility model, through the self-resonance and mutual coupling of the first antenna unit and the second antenna unit on the antenna substrate, the frequency switching of multiple target communication frequency bands is realized, thereby improving the convenience and applicability of the broadband antenna and meeting the high-gain requirements of the broadband.

[0006] In addition, according to the above broadband antenna of the utility model, the following additional technical features may also be provided:

[0007] In some examples, the antenna substrate has opposite first and second sides in the length direction, the first antenna unit is disposed on the first side, and the second antenna unit is disposed on the second side.

[0008] In some examples, in the direction from the first side to the second side, the first radiator and the microstrip asymptote are connected in sequence, and the first V-shaped cut angle and the second V-shaped cut angle are symmetrically disposed on both sides of the bottom of the first radiator.

[0009] In some examples, the second antenna unit includes a second radiator, a third radiator, a fourth radiator, a fifth radiator, a sixth radiator, a seventh radiator, an eighth radiator, and a ninth radiator. Among them, in the direction from the first side to the second side, the second radiator, the first L-shaped cut angle, the fourth radiator, the sixth radiator, and the eighth radiator are connected in sequence. And, in the direction from the second side to the first side, the ninth radiator, the seventh radiator, the fifth radiator, the second L-shaped cut angle, and the third radiator are connected in sequence.

[0010] In some examples, the first radiator is configured to generate a resonance of 0.6 - 0.96 GHz through a quarter-wavelength resonance, and the microstrip asymptote is configured for a quarter-impedance transformation. The first V-shaped cut angle, the second V-shaped cut angle, the fourth radiator, the fifth radiator, the sixth radiator, the seventh radiator, the eighth radiator, and the ninth radiator are configured to generate a resonance of 1.4 - 2.7 GHz through their own quarter-wavelength resonances and mutual coupling resonances. The first L-shaped cut angle, the second L-shaped cut angle, the second radiator, and the third radiator are configured to generate a resonance of 3.3 - 5.0 GHz through their own quarter-wavelength resonances and mutual coupling resonances.

[0011] In some examples, the connector is an N-type connector.

[0012] In some examples, the broadband antenna further includes: an antenna coaxial cable, which is used to connect the antenna substrate to the N-type connector.

[0013] In some examples, the antenna substrate includes a first pad and a second pad. The antenna coaxial cable is welded to the first pad through a first solder joint and welded to the second pad through a second solder joint.

[0014] In some examples, the broadband antenna further includes: a foam, which is used to fix the antenna substrate at the central position of the housing.

[0015] In some examples, at least one heat dissipation through-hole is further provided on the antenna substrate.

[0016] Additional aspects and advantages of the present utility model will be given in part in the following description, will become apparent in part from the following description, or will be understood through the practice of the present utility model. Description of the Drawings

[0017] Figure 1 is a block schematic diagram of a broadband antenna according to an embodiment of the present utility model;

[0018] Figure 2 is one of the schematic structural diagrams of a broadband antenna according to a specific embodiment of the present invention;

[0019] Figure 3 is the second of the schematic structural diagrams of a broadband antenna according to a specific embodiment of the present invention;

[0020] Figure 4 is the third of the schematic structural diagrams of a broadband antenna according to a specific embodiment of the present invention;

[0021] Figure 5 is the standing wave ratio curve graph of a broadband antenna according to an embodiment of the present invention;

[0022] Figure 6 is the efficiency curve graph of a broadband antenna according to an embodiment of the present invention;

[0023] Figure 7 is the peak gain curve graph of a broadband antenna according to an embodiment of the present invention. Detailed Embodiment

[0024] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention.

[0025] The broadband antenna of the embodiment of the present invention will be described below with reference to the accompanying drawings.

[0026] Figure 1 is the block schematic diagram of a broadband antenna according to an embodiment of the present invention.

[0027] Specifically, in some embodiments of the present invention, as Figure 1 shown, the broadband antenna 1000 includes: an antenna substrate 101, a first antenna unit 102, a second antenna unit 103, a housing 104, and a connector 105.

[0028] Among them, the first antenna unit 102 is disposed on the antenna substrate 101. The first antenna unit 102 includes a first radiator, a first V-shaped cut angle, a second V-shaped cut angle, and a microstrip asymptote. The second antenna unit 103 is disposed on the antenna substrate 101. The second antenna unit 103 includes a first L-shaped cut angle, a second L-shaped cut angle, and a plurality of radiators. The housing 104 is used to wrap the antenna substrate 101. The connector 105 is used to connect the broadband antenna 1000 to a terminal. Among them, the first antenna unit 102 is adapted to resonate with the second antenna unit 103 by itself and interactively couple therewith, so that the broadband antenna switches to a target communication frequency band.

[0029] Specifically, in this embodiment of the present utility model, as Figure 1 and Figure 2 shown, the antenna substrate 101 can be wrapped by the housing 104 to achieve the sealing protection of the antenna substrate 101 and the first antenna unit 102 and the second antenna unit 103 integrated on the antenna substrate 101, and the broadband antenna 1000 can be connected to the terminal through the joint 105, so that the terminal can achieve full-band communication with the help of the broadband antenna 1000. Among them, the broadband antenna 1000 can switch to the corresponding target communication frequency band through the self-resonance and mutual coupling of the first antenna unit 102 and the second antenna unit 103. Thus, the full-band communication of the broadband antenna 1000 is achieved.

[0030] Furthermore, in some embodiments of the present utility model, as Figure 3 shown, the antenna substrate 101 has opposite first side A and second side B in the length direction. The first antenna unit 102 is arranged on the first side A, and the second antenna unit 103 is arranged on the second side B.

[0031] It can be understood that in this embodiment of the present utility model, by arranging the first antenna unit 102 on the first side A of the antenna substrate 101 and arranging the second antenna unit 103 on the second side B of the antenna substrate 101, thus, through the self-resonance and mutual coupling of the first antenna unit 102 and the second antenna unit 103, the broadband antenna 1000 is switched to the corresponding target communication frequency band, and thus, the full-band communication of the broadband antenna 1000 is achieved. Thereby, the standing wave ratio of the broadband antenna 1000 is below 3, and at the same time, the efficiency reaches more than 30%, and the peak gain reaches a maximum of 6 dB.

[0032] Furthermore, in some embodiments of the present utility model, in the direction from the first side A to the second side B, the first radiator 11 and the microstrip asymptote 23 are connected in sequence, and the first V-shaped cut angle 21 and the second V-shaped cut angle 22 are symmetrically arranged on both sides of the bottom of the first radiator 11 respectively.

[0033] It can be understood that in this embodiment of the present utility model, as Figure 3 shown, in the order of the first radiator 11 and the microstrip asymptote 23, the first radiator 11 and the microstrip asymptote 23 are arranged in sequence along the direction from the first side A to the second side B of the antenna substrate 101, and, the bottom of the first radiator 11 is processed so that the first V-shaped cut angle 21 and the second V-shaped cut angle 22 are symmetrically arranged on both sides of the bottom of the first radiator 11 respectively.

[0034] Further, in some embodiments of the present invention, the second antenna unit 103 includes a second radiator 12, a third radiator 13, a fourth radiator 14, a fifth radiator 15, a sixth radiator 16, a seventh radiator 17, an eighth radiator 18, and a ninth radiator 19. Among them, in the direction from the first side A to the second side B, the second radiator 12, the first L-shaped cut angle 31, the fourth radiator 14, the sixth radiator 16, and the eighth radiator 18 are connected in sequence. And, in the direction from the second side B to the first side A, the ninth radiator 19, the seventh radiator 17, the fifth radiator 15, the second L-shaped cut angle 32, and the third radiator 13 are connected in sequence.

[0035] It can be understood that, in this embodiment of the present invention, as Figure 3 shown, in the order of the second radiator 12, the first L-shaped cut angle 31, the fourth radiator 14, the sixth radiator 16, and the eighth radiator 18, the second radiator 12, the first L-shaped cut angle 31, the fourth radiator 14, the sixth radiator 16, and the eighth radiator 18 are sequentially arranged along the first side A to the second side B of the antenna substrate 101. And, in the order of the ninth radiator 19, the seventh radiator 17, the fifth radiator 15, the second L-shaped cut angle 32, and the third radiator 13, the ninth radiator 19, the seventh radiator 17, the fifth radiator 15, the second L-shaped cut angle 32, and the third radiator 13 are sequentially arranged along the second side B to the second side A of the antenna substrate 101. Specifically, the second radiator 12 and the third radiator 13 are symmetrically arranged on both sides of the antenna substrate 101, the first L-shaped cut angle 31 and the second L-shaped cut angle 32 are symmetrically arranged on both sides of the antenna substrate 101, the fourth radiator 14 and the fifth radiator 15 are symmetrically arranged on both sides of the antenna substrate 101, the sixth radiator 16 and the seventh radiator 17 are symmetrically arranged on both sides of the antenna substrate 101, and the eighth radiator 18 and the ninth radiator 19 are symmetrically arranged on both sides of the antenna substrate 101.

[0036] Further, in some embodiments of the present invention, the first radiator is configured to generate a resonance of 0.6 - 0.96 GHz through a quarter-wavelength resonance, and the microstrip asymptote is configured for a quarter-impedance transformation; the first V-shaped cut angle, the second V-shaped cut angle, the fourth radiator, the fifth radiator, the sixth radiator, the seventh radiator, the eighth radiator, and the ninth radiator are configured to generate a resonance of 1.4 - 2.7 GHz through their own quarter-wavelength resonance and mutual coupling resonance; the first L-shaped cut angle, the second L-shaped cut angle, the second radiator, and the third radiator are configured to generate a resonance of 3.3 - 5.0 GHz through their own quarter-wavelength resonance and mutual coupling resonance.

[0037] It can be understood that in this embodiment of the present utility model, the target communication frequency band can be the full frequency band. Thus, the wideband antenna 1000 can achieve frequency switching of multiple target communication frequency bands, thereby improving the convenience and applicability of the wideband antenna and meeting the wideband high-gain requirements.

[0038] Specifically, in the above embodiment of the present utility model, the wideband antenna 1000 can resonate at its own quarter wavelength through the first radiator 11, and extend the radiator size through the quarter impedance transformation of the microstrip asymptote 23 to generate resonance at 0.6 - 0.96 GHz. At the same time, the wideband antenna 1000 can also generate resonance at 1.4 - 2.7 GHz through the self-quarter wavelength resonance and mutual coupling resonance of the first V-shaped cut angle 21, the second V-shaped cut angle 22, the fourth radiator 14, the fifth radiator 14, the sixth radiator 16, the seventh radiator 17, the eighth radiator 18, and the ninth radiator 19. Additionally, the wideband antenna 1000 can generate resonance at 3.3 - 5.0 GHz through the self-quarter wavelength resonance and mutual coupling resonance of the first L-shaped cut angle 31, the second L-shaped cut angle 32, the second radiator 12, and the third radiator 13. Thus, the wideband antenna 1000 can meet the full-frequency band communication requirements.

[0039] In other words, in the above embodiment of the present utility model, through the self-resonance and mutual coupling between the first antenna unit 102 and the second antenna unit 103 integrated on the antenna substrate 101, frequency switching of multiple target communication frequency bands can be achieved, thereby improving the convenience and applicability of the wideband antenna and meeting the wideband high-gain requirements.

[0040] Furthermore, in some embodiments of the present utility model, the connector 105 is an N-type connector.

[0041] It can be understood that in this embodiment of the present utility model, the wideband antenna 1000 can be connected to the terminal through the N-type connector, and thus, the antenna performance of the wideband antenna 1000 can be tested through the terminal.

[0042] Furthermore, in some embodiments of the present utility model, as Figure 4 shown, the wideband antenna 1000 further includes: an antenna coaxial cable 106, and the antenna coaxial cable 106 is used to connect the antenna substrate 101 and the N-type connector.

[0043] Specifically, in this embodiment of the present utility model, the antenna coaxial cable 106 can function to connect the antenna substrate 101 and the N-type connector, ensuring effective signal transmission and anti-interference ability between the antenna substrate 101 and the N-type connector, thereby further improving the accuracy of antenna performance testing.

[0044] Further, in some embodiments of the present utility model, such as Figure 3 shown, the antenna substrate 101 includes a first pad 107 and a second pad 108. The antenna coaxial line 106 is welded to the first pad 107 through a first solder joint and welded to the second pad 108 through a second solder joint.

[0045] Specifically, in this embodiment of the present utility model, the antenna substrate 101 is further provided with a first pad 107 and a second pad 108. At this time, the antenna coaxial line 106 can be welded to the first pad 107 through a first solder joint to realize the connection between the antenna coaxial line 106 and the first antenna unit 102. Similarly, the antenna coaxial line 106 can also be welded to the second pad 108 through a second solder joint to realize the connection between the antenna coaxial line 106 and the second antenna unit 103.

[0046] Further, in some embodiments of the present utility model, at least one heat dissipation through hole is further provided on the antenna substrate 101.

[0047] Specifically, in this embodiment of the present utility model, at least one heat dissipation through hole is further provided on the antenna substrate 101. The heat dissipation through hole penetrates from the top surface of the antenna substrate 101 to the bottom surface of the antenna substrate. Thus, heat dissipation can be improved through the heat dissipation through hole.

[0048] Further, in some embodiments of the present utility model, such as Figure 4 shown, the broadband antenna 1000 further includes: a foam 107, and the foam 107 is used to fix the antenna substrate 101 at the central position of the housing 104.

[0049] It can be understood that in this embodiment of the present utility model, the antenna substrate 101 can also be fixed at the central position of the housing 104 through the foam 107 to prevent the antenna substrate 101 from colliding with the housing 104, or to prevent the position of the antenna substrate 101 from shifting.

[0050] Specifically, as Figures 5 to 7 shown, through testing, it can be known that the broadband antenna 1000 of the embodiment of the present utility model can achieve a standing wave ratio of less than 3, while the efficiency reaches more than 30%, and the peak gain reaches a maximum of 6 dB. Thus, the convenience and applicability of the broadband antenna are improved, meeting the high-gain requirements of the broadband.

[0051] In summary, according to the broadband antenna of the present utility model, through the self-resonance and mutual coupling of the first antenna unit and the second antenna unit on the antenna substrate, the frequency switching of multiple target communication frequency bands is realized. Thus, the convenience and applicability of the broadband antenna are improved, meeting the high-gain requirements of the broadband.

[0052] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0053] In the description of the present utility model, it should be understood that the orientation or positional relationships indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationships shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model.

[0054] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present utility model, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0055] In the present utility model, unless otherwise clearly specified and limited, terms such as "installed", "connected", "connected to", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0056] In the present utility model, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may mean that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0057] Although the embodiments of the present utility model have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present utility model. Those of ordinary skill in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present utility model.

Claims

1. A broadband antenna, characterized in that: The broadband antenna comprises: Antenna substrate; A first antenna unit is disposed on the antenna substrate, wherein the first antenna unit comprises a first radiator, a first V-shaped cut angle, a second V-shaped cut angle and a microstrip asymptote; A second antenna unit disposed on the antenna substrate, the second antenna unit comprising a first L-shaped cut angle, a second L-shaped cut angle and a plurality of radiators; A shell, wherein the shell is used to wrap the antenna substrate; A connector, the connector being used to connect the broadband antenna and a terminal; The first antenna unit is suitable for self-resonance and mutual coupling with the second antenna unit, so that the wide-band antenna switches to a target communication frequency band.

2. The broadband antenna according to claim 1, characterized in that: The antenna substrate has a first side and a second side opposite to each other in a length direction. The first antenna unit is disposed on the first side, and the second antenna unit is disposed on the second side.

3. The broadband antenna according to claim 2, characterized in that: In the direction from the first side to the second side, the first radiator is sequentially connected to the microstrip asymptote, and the first V-shaped cut angle and the second V-shaped cut angle are symmetrically arranged on two sides of the bottom of the first radiator.

4. The broadband antenna according to claim 3, characterized in that: The second antenna unit includes a second radiator, a third radiator, a fourth radiator, a fifth radiator, a sixth radiator, a seventh radiator, an eighth radiator and a ninth radiator, wherein, in the direction from the first side to the second side, the second radiator, the first L-shaped cut angle, the fourth radiator, the sixth radiator and the eighth radiator are connected in sequence, and, in the direction from the second side to the first side, the ninth radiator, the seventh radiator, the fifth radiator, the second L-shaped cut angle and the third radiator are connected in sequence.

5. The broadband antenna according to claim 4, characterized in that: The first radiator is configured to generate a resonance of 0.6-0.96 GHz through a quarter wavelength resonance and the microstrip asymptote is configured to be a quarter impedance transformation; The first V-shaped cut angle, the second V-shaped cut angle, the fourth radiator, the fifth radiator, the sixth radiator, the seventh radiator, the eighth radiator and the ninth radiator are configured to generate a resonance of 1.4-2.7 GHz through self-quarter wavelength resonance and mutual coupling resonance; The first L-shaped cut angle, the second L-shaped cut angle, the second radiator and the third radiator are configured to generate resonance at 3.3-5.0 GHz through self-quarter wavelength resonance and mutual coupling resonance.

6. The broadband antenna according to claim 1, characterized in that: The connector is an N-type connector.

7. The broadband antenna according to claim 6, characterized in that: The broadband antenna also includes: An antenna coaxial line is used to connect the antenna substrate and the N-type connector.

8. The broadband antenna according to claim 7, characterized in that: The antenna substrate includes a first soldering pad and a second soldering pad. The antenna coaxial line is soldered to the first soldering pad via a first soldering point and is soldered to the second soldering pad via a second soldering point.

9. The broadband antenna according to claim 1, characterized in that: At least one heat dissipation through hole is also arranged on the antenna substrate.

10. The broadband antenna according to claim 1, characterized in that: The broadband antenna also includes: The foam is used to fix the antenna substrate at the center position of the housing.

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