Transducer antenna unit and antenna

Abstract

To provide a transducer antenna unit and an antenna that increase isolation between transducer arms and achieve a better decoupling effect.SOLUTION: A transducer antenna unit includes a support base 1, a plurality of transducer arms 2 mounted on the support base 1, and a guide 3. The plurality of transducer arms 2 each extend outward from a central axis of the transducer antenna unit, are installed at an interval from one another, and include a conductive layer 21 and a solder mask layer 22, a plurality of filtering branches 23 are formed by a watermark on the conductive layer 21, and the guide 3 is located at the top of the transducer antenna unit and has an interval between itself and the plurality of transducer arms 2, whereby the transducer arms 2 having the filtering branches 23 are fitted together with the guide 3.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to the technical field of base station antennas, in particular to transducer antenna units and antennas. [Background technology]

[0002] As base station antennas become multi-frequency, smaller, and more complex, how to achieve optimal performance indicators in each sub-frequency band of the same antenna has become a bottleneck in current base station antenna research and development. In this regard, transducer antenna units that can achieve high isolation by themselves and have decoupling functions are particularly important. Summary of the Invention [Problem to be solved by the invention]

[0003] The present invention has been made in consideration of this, and aims to provide a transducer antenna unit and an antenna in which a transducer arm having a filtering branch is fitted into a guide, thereby increasing isolation and achieving a better decoupling effect. [Means for solving the problem]

[0004] In a first aspect, an embodiment of the present invention is a transducer antenna unit comprising: The transducer antenna unit includes a support base, a plurality of transducer arms mounted on the support base, extending outward from a central axis of the transducer antenna unit, spaced apart from one another, the plurality of transducer arms including a conductive layer having a plurality of filtering branches formed thereon in an openwork manner, and a solder mask layer, and a guide mounted on the support base, located on the top of the transducer antenna unit, and spaced apart from the plurality of transducer arms.

[0005] Further, the filtering branches include at least two first filtering branches having 1 / 8 of the high frequency wavelength and at least one second filtering branch having 1 / 16 of the high frequency wavelength.

[0006] Furthermore, the first filtering branch includes a first connecting segment and a first extension segment bent and extended by an end of the first connecting segment.

[0007] Further, the first filtering branch includes a first connecting segment, a bending portion connected to an end of the first connecting segment and including a plurality of sub-segments that are sequentially bent and connected, and a first extension section that is bent and extended by the end of the bending portion.

[0008] Furthermore, the second filtering branch includes a second connecting segment and a second extension segment bent and extended by an end of the second connecting segment.

[0009] Furthermore, the width of the filtering branch is 0.06 to 0.1 mm.

[0010] Furthermore, a through hole is provided in the transducer arm, and the support base passes through the through hole so as to fix the transducer arm.

[0011] The transducer further includes a first fastener fixed to the support base and provided with the first slit so as to fix the transducer arm within the first slit.

[0012] Furthermore, the transducer antenna unit further includes a power supply base having a power supply circuit, a plurality of baluns, each of which has two transducer arms fixed to both sides thereof, a balun component electrically connected to the power supply circuit and the corresponding transducer arm, and a second fastener fixed to the support base, having a second slit, and fixing the balun component and the corresponding transducer arm within the second slit.

[0013] In a second aspect, an embodiment of the present invention is an antenna comprising a transducer antenna unit as described in the first aspect, the transducer antenna unit further comprising a power feed stand provided with a port for connecting a coaxial cable. Effect of the Invention

[0014] An embodiment of the present invention provides a vibrator antenna unit and an antenna, the vibrator antenna unit includes a support base, a vibrator arm installed on the support base, and a guide. The vibrator arms extend outward from the central axis of the vibrator antenna unit and are installed at intervals from each other, the vibrator arms include a conductive layer and a solder mask layer, and the conductive layer is openworked with a plurality of filtering branches. The guide is located at the top of the vibrator antenna unit and has a gap between the guide and the plurality of vibrator arms. Thus, the vibrator antenna unit can improve isolation by fitting the vibrator arm having the filtering branch to the guide, and can obtain a good decoupling effect. [Brief description of the drawings]

[0015] The above and other objects, features and advantages of the present invention will become more apparent from the following detailed description of the embodiments of the present invention with reference to the accompanying drawings. [Figure 1] 1 is a schematic diagram illustrating the configuration of a transducer antenna unit according to an embodiment of the present invention. [Diagram 2] 1 is an exploded schematic view of a transducer antenna unit according to an embodiment of the present invention; [Diagram 3] 1 is a schematic diagram illustrating the configuration of a vibrator arm according to an embodiment of the present invention. [Figure 4] 1 is a schematic diagram of a guide according to an embodiment of the present invention; [Diagram 5] 1 is a schematic diagram of a configuration of a support base according to an embodiment of the present invention. [Figure 6] 1 is a schematic diagram showing the configuration of a first fastener according to an embodiment of the present invention. [Figure 7] 1 is a schematic diagram of a power supply stand according to an embodiment of the present invention; [Figure 8] FIG. 2 is a schematic diagram illustrating a configuration of a balun component according to an embodiment of the present invention. [Figure 9] 4 is a schematic diagram showing the configuration of a second fastener according to an embodiment of the present invention. FIG. [Figure 10] 4 is a schematic diagram of an isolation curve of a transducer antenna unit according to an embodiment of the present invention. [Figure 11] FIG. 2 is a high frequency direction view after arraying of the transducer antenna unit according to the embodiment of the present invention. [Figure 12] FIG. 2 is a low-frequency directional view after arraying of the transducer antenna unit according to the embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0016] The present invention will be described below based on examples, but the present invention is not limited to these examples. In the detailed description of the present invention, certain details are described in detail. The present invention can be fully understood by those skilled in the art without the description of these details. In order to avoid confusing the essence of the present invention, well-known methods, processes, flows, elements, and circuits are not described in detail.

[0017] Additionally, those skilled in the art will appreciate that the figures provided herein are provided for illustrative purposes and are not necessarily drawn to scale.

[0018] Unless otherwise clearly specified and limited, the terms "attached," "connected," "contacted," "fixed," and the like should be understood in a broad sense. For example, they may be fixedly connected, detachably connected, or integral. They may be mechanically connected, electrically connected, directly connected, or indirectly connected via an intermediate medium, and unless otherwise limited, they may be connected inside two elements or an interactive relationship between two elements. The specific meanings of the above terms in this application can be understood by those skilled in the art depending on the situation.

[0019] Unless the context clearly requires otherwise, in the specification, the words "including," "comprises," and similar words are to be construed in an inclusive sense and not in an exclusive or limiting sense, i.e., "including but not limited to."

[0020] It should be understood that in the present description, the terms "first," "second," etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance. Furthermore, in the present description, unless otherwise specified, "plurality" means two or more than two.

[0021] FIG. 1 is a schematic diagram of the configuration of a vibrator antenna unit according to an embodiment of the present invention, and FIG. 2 is an exploded schematic diagram of the vibrator antenna unit according to an embodiment of the present invention. As shown in FIG. 1 and FIG. 2, the vibrator antenna unit includes a support base 1, a vibrator arm 2, and a guide 3. Note that the vibrator arm 2 is an antenna radiation member, and there are multiple vibrator arms 2, but the specific number can be set as needed. Illustratively, there are four vibrator arms 2, and the four vibrator arms 2 extend outward from the central axis of the vibrator antenna unit and are spaced apart from each other, thereby being installed on the support base 1 in a cross shape. Alternatively, the length of the vibrator arm 2 is 1 / 4 wavelength. Furthermore, FIG. 3 is a schematic diagram of the configuration of a vibrator arm according to an embodiment of the present invention, and as shown in FIG. 3, the vibrator arm 2 includes a conductive layer 21 and a solder mask layer 22, and the conductive layer 21 has a plurality of filtering branches 23 formed in an openwork manner, and the solder mask layer 22 can protect the conductive layer 21 and increase the capacitive coupling. Note that, as an optional embodiment, the conductive layer 21 is a copper layer. Furthermore, the guide 3 is installed on the support 1 and located at the top of the transducer antenna unit, and the plane on which the guide 3 is located and the plane on which the multiple transducer arms 2 are located are parallel to each other, that is, there is a gap between the guide 3 and the multiple transducer arms 2. Thus, the transducer antenna unit can improve isolation by fitting the transducer arm 2 having the filtering branch 23 into the guide 3, and can obtain a good decoupling effect.

[0022] As shown in FIG. 2 and FIG. 3, in one embodiment, the filtering branch 23 includes at least two first filtering branches 231 and at least one second filtering branch 232. The number and positions of the first filtering branches 231 and the second filtering branches 232 can be set as necessary. Exemplarily, there are two first filtering branches 231, which are spaced apart along the longitudinal direction of the transducer arm 2. There is one second filtering branch 232, which is located along the transverse direction of the transducer arm 2. Furthermore, the length of the first filtering branch 231 is 1 / 8 of the wavelength of the high frequency, and the length of the second filtering branch 232 is 1 / 16 of the wavelength of the high frequency. For ease of understanding, the lengths of the first filtering branch 231 and the second filtering branch 232 refer to the dimensions along the longitudinal direction of the transducer arm 2. Correspondingly, the widths of the first filtering branch 231 and the second filtering branch 232 refer to the dimensions along the transverse direction of the transducer arm 2. Specifically, the first filtering branch 231 and the second filtering branch 232 have the same width, and the width ranges from 0.06 mm to 0.1 mm. That is, the width ranges from 0.06 mm to 0.1 mm. Exemplarily, the first filtering branch 231 and the second filtering branch 232 have the same width, 0.08 mm, and the width of the filtering branch 23 is 0.08 mm.

[0023] In addition, based on the dimensional conditions of the first filtering branch 231 and the second filtering branch 232, the configurations of the first filtering branch 231 and the second filtering branch 232 can be set as needed, and are not limited here. Exemplarily, as shown in FIG. 3, in one embodiment, the first filtering branch 231 includes a first connection segment 2311 connected to the main body portion of the conductive layer 21, and a first extension segment 2312 that is bent and extended by an end of the first connection segment 2311. In another embodiment, the first filtering branch 231 includes a first connection segment 2311 connected to the main body portion of the conductive layer 21, a bending portion 2313 that is connected to the end of the first connection segment 2311 and includes a plurality of sub-segments that are sequentially bent and connected, and a first extension segment 2312 that is bent and extended by an end of the bending portion 2313. In addition, the configuration and position of each sub-segment in the bending portion 2313 can be set as needed, and are not limited here. In yet another embodiment, the second filtering branch 232 includes a second connecting segment 2321 connected to the main body portion of the conductive layer 21, and a second extending segment 2322 bent and extending from an end of the second connecting segment 2321. In addition, the positions and dimensions of each part of the first filtering branch 231 and the second filtering branch 232 can be set as needed, provided that the dimensional requirements are satisfied, and are not limited here.

[0024] FIG. 4 is a schematic diagram of the configuration of a guide according to an embodiment of the present invention. As shown in FIG. 4, in one embodiment, the guide 3 is configured in a sheet shape, and includes a connection plate 31 and a guide arm 32, and the guide arm 32 surrounds to form a window 33. The material of the guide 3 includes copper or other conductive materials. In addition, as shown in FIG. 2, the transducer antenna unit further includes a third fastener 8, both ends of which are connected to the connection plate 31 and the support base 1, respectively, to realize the fixed installation of the guide 3. In addition, the number of the guide arms 32 and the transducer arms 2 is equal, and the extension direction of the guide arms 32 is the same as the extension direction of the corresponding transducer arms 2. That is, corresponding to the cross-shaped structure consisting of four transducer arms 2, the guide arms 32 are also formed in a cross-shaped structure. By providing the guide arms 32 with a certain interval from the transducer arms 2, it is advantageous to the formation of harmonics between the guide 3 and the transducer arms 2, and a filter effect is formed, thereby achieving the purpose of increasing isolation. Meanwhile, the structure in which the window 33 fits the guide arms 32 is formed in a cross shape. In addition, by providing a window 33 in the guide 3, the influence on the transducer antenna unit can be reduced, and the cross polarization ratio after the unit is arrayed can be improved, so that the signal spatial directivity and decoupling property are strong after the unit is arrayed.

[0025] As shown in FIG. 3, in one embodiment, the vibrator arm 2 is provided with a through hole 24. Furthermore, the support base 1 fixes the vibrator arm 2 through the through hole 24. Specifically, FIG. 5 is a schematic diagram of the support base according to the embodiment of the present invention, and as shown in FIG. 5, the support base 1 is provided with a first engagement portion 11 and a support portion 12. Here, the structure and dimensions of the first engagement portion 11 are matched with the through hole 24 to achieve fixation of the vibrator arm 2 through the through hole 24. At the same time, the cross section of the support portion 12 is formed in an L-shaped structure, and can support the bottom of the vibrator arm 2, or can form a groove-like structure that matches the vibrator arm 2 with the first engagement portion 11, and the vibrator arm 2 can be accommodated between the first engagement portion 11 and the support portion 12 to strengthen the fixing action of the vibrator arm 2.

[0026] As shown in FIG. 1 and FIG. 2, in one embodiment, the transducer antenna unit further includes a first fastener 4. Specifically, FIG. 6 is a schematic diagram of the configuration of the first fastener according to the embodiment of the present invention, and as shown in FIG. 6, the first fastener 4 is provided with a first slit 41 and a second engagement portion 42. Here, the size of the first slit 41 is matched with the transducer arm 2 so as to fix the transducer arm 2 when the transducer arm 2 passes through the first slit 41. Furthermore, the structure of the second engagement portion 42 is matched with the support base 1 so that the first fastener 4 engages with the support base 1 via the second engagement portion 42. As a result, by providing the first fastener 4, the fixation of the transducer arm 2 can be further strengthened.

[0027] As shown in FIG. 1 and FIG. 2, in one embodiment, the transducer antenna unit further includes a power supply stand 5, a balun component 6, and a second fastener 7. Specifically, FIG. 7 is a schematic diagram of the configuration of the power supply stand according to an embodiment of the present invention, and as shown in FIG. 7, the power supply stand 5 includes a power supply circuit 51, a port 52, and a mounting groove 53. Here, the port 52 is used to connect the coaxial cable. Furthermore, FIG. 8 is a schematic diagram of the configuration of the balun component according to an embodiment of the present invention, and as shown in FIG. 8, the balun component 6 includes a plurality of baluns 61. Note that the number of baluns 61 and the number of transducer arms 2 match each other, and the balun 61 is also called a balanced-unbalanced impedance converter, which can perform impedance conversion with ratios such as 1:1, 4:1, 6:1, 9:1, and 25:1. The principle is that according to antenna theory, a dipole antenna is a balanced antenna, and a coaxial cable is an unbalanced transmission line, and if it is directly connected, a high-frequency current will flow in the outer skin of the coaxial cable, which will affect the radiation of the antenna. Therefore, it is necessary to set the balun component 6. Illustratively, there are four transducer arms 2, two baluns 61, which are arranged in a crisscross configuration, and two power supply circuits 51, with two transducer arms 2 fixed to both sides of each balun 61. It is easy to understand that each balun 61 is electrically connected to the corresponding power supply circuit 51 and the corresponding transducer arm 2. As shown in FIG. 7, the mounting groove 53 is formed in a cross shape to fit the two baluns 61, so that the balun component 6 can be inserted into the power supply stand 5 and the two baluns 61 can be powered through the two power supply circuits 51, respectively.

[0028] As shown in FIG. 2, in one embodiment, the transducer antenna unit further includes a fourth fastener 9. The transducer arm 2 is fixed to the corresponding balun 61 by overlapping it through the fourth fastener 9. Furthermore, FIG. 9 is a schematic diagram of the mechanism of the second fastener according to the embodiment of the present invention. As shown in FIG. 9, the main body of the second fastener 7 has a cross-shaped structure provided on the central axis of the transducer antenna unit, and the second fastener 7 is provided with a second slit 71. The number of the second slits 71 is set to four in accordance with the number of the transducer arms 2, and the four second slits 71 are distributed in a cross shape. The size of the second slits 71 matches the size of the connection portion between the transducer arm 2 and the balun 61, and the transducer arm 2 and the balun 61 can be accommodated and fixed in the second slit 71. Furthermore, as shown in FIG. 9, the second fastener 7 is further provided with a third engagement portion 72. In an alternative embodiment, there are two third engagement portions 72, which are symmetrically distributed, and the structures of the third engagement portions 72 are aligned with the support base 1 to fix the second fastener 7 to the support base 1. Thus, by providing the second fastener 7, the fixing of the balun component 6 and the transducer arm 2 can be realized.

[0029] FIG. 10 is a schematic diagram of the isolation curve of the transducer antenna unit according to the embodiment of the present invention. As shown in FIG. 10, the isolation of the transducer antenna unit according to the embodiment of the present invention can be increased to -41 dB. FIG. 11 is a high frequency direction diagram after the transducer antenna unit according to the embodiment of the present invention is arrayed, and FIG. 12 is a low frequency direction diagram after the transducer antenna unit according to the embodiment of the present invention is arrayed. As shown in FIG. 11 and FIG. 12, after the transducer antenna unit according to the embodiment of the present invention is arrayed, the radiation diagram of the high frequency unit is basically not distorted, the beam converges to 61°-66°, and the performance of the high frequency direction diagram is excellent. The low frequency direction diagram is also not affected by the high frequency unit, the waveform is not distorted, and the beam converges to 75°-80°.

[0030] In addition, the embodiment of the present invention provides an antenna including a transducer antenna unit. The configuration of the transducer antenna unit is as described above, and will not be described further here. The antenna may be a MIMO antenna, a notebook computer antenna, a base station antenna, etc. As can be seen from the above, the installation of the transducer antenna unit can improve isolation and achieve a good decoupling effect.

[0031] An embodiment of the present invention provides a vibrator antenna unit and an antenna, the vibrator antenna unit includes a support base, a vibrator arm installed on the support base, and a guide. The vibrator arms extend outward from the central axis of the vibrator antenna unit and are installed at intervals from each other, the vibrator arms include a conductive layer and a solder mask layer, and the conductive layer is openworked with a plurality of filtering branches. The guide is located at the top of the vibrator antenna unit and has a gap between the guide and the plurality of vibrator arms. Thus, the vibrator antenna unit can improve isolation by fitting the vibrator arm having the filtering branch to the guide, and can obtain a good decoupling effect.

[0032] The above are only preferred embodiments of the present application, and are not used to limit the present application, and those skilled in the art may have various modifications and variations of the present application. All modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application. [Explanation of symbols]

[0033] 1 Support stand 11 First engagement portion 12 Support part 13 Third Slit 2 Transducer arms 21 Conductive layer 22 Solder Mask Layer 23 Filtering Branch 231 First Filtering Branch 2311 1st connection segment 2312 First extension segment 2313 Bending part 232 Second Filtering Branch 2321 Second connecting segment 2322 2nd extension segment 24 Through hole 3 Guide 31 Connection plate 32 Guide Arm 33 Windows 4 First zipper 41 First Slit 42 Second engagement portion 5 Power supply stand 51 Power supply circuit 52 Port 53 Mounting groove 6 Balun Components 61 Balun 7 Second zipper 71 Second Slit 72 Third engagement part 8. Third zipper 9 Fourth Zipper

Claims

1. A transducer antenna unit, comprising: A support base (1); A plurality of transducer arms (2) are mounted on the support base (1), extend outward from a central axis of the transducer antenna unit, and are spaced apart from one another. The transducer arms (2) include a conductive layer (21) having a plurality of filtering branches (23) formed thereon in an openwork manner, and a solder mask layer (22); A guide (3) is installed on the support base (1), is located at the top of the transducer antenna unit, and is spaced apart from the plurality of transducer arms (2); A transducer antenna unit comprising:

2. The filtering branch (23) At least two first filtering branches (231) having a high frequency wavelength of 1 / 8; 2. The transducer antenna unit according to claim 1, further comprising at least one second filtering branch (232) having a radio frequency wavelength of 1 / 16.

3. The first filtering branch (231) comprises: A first connecting segment (2311); The transducer antenna unit according to claim 2, further comprising a first extension segment (2312) that is bent and extended by an end of the first connection segment (2311).

4. The first filtering branch (231) comprises: A first connecting segment (2311); A folding section (2313) connected to an end of the first connecting segment (2311) and including a plurality of sub-segments that are sequentially folded and connected; The transducer antenna unit according to claim 2, further comprising a first extension section (2312) that is bent and extended by an end of the bent portion (2313).

5. The second filtering branch (232) comprises: A second connecting segment (2321); The transducer antenna unit according to claim 2, further comprising a second extension segment (2322) that is bent and extended by an end of the second connection segment (2321).

6. The transducer antenna unit according to claim 1, characterized in that the width of the filtering branch (23) is 0.06-0.1 mm.

7. The transducer arm (2) is provided with a through hole (24), 2. The transducer antenna unit according to claim 1, wherein the support base (1) has a through hole (24) for fixing the transducer arm (2).

8. The transducer antenna unit includes: The transducer antenna unit of claim 1, further comprising a first fastener (4) fixed to the support base (1) and provided with the first slit (41) so as to fix the transducer arm (2) within the first slit (41).

9. The transducer antenna unit includes: A power supply stand (5) provided with a power supply circuit (51); a balun component (6) including a plurality of baluns (61), each of which has two transducer arms (2) fixed to both sides thereof, each of which is electrically connected to the power supply circuit (51) and the corresponding transducer arm (2); The transducer antenna unit of claim 1, further comprising: a second fastener (7) fixed to the support base (1), having a second slit (71) and fixing the balun component (6) and the corresponding transducer arm (2) within the second slit (71).

10. An antenna, The transducer antenna unit according to any one of claims 1 to 9, The antenna, wherein the transducer antenna unit further comprises a power supply base (5) provided with a port (52) for connecting a coaxial cable.

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