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, and in particular to transducer antenna units and antennas. [Background technology]

[0002] As base station antennas become more multi-frequency, smaller, and more complex, the bottleneck in current base station antenna research and development is how to achieve optimal performance indicators for each sub-frequency band of the same antenna. In particular, oscillator antenna units that can achieve high isolation and have decoupling functions are 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 vibrator antenna unit and an antenna in which a vibrator 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 vibrator antenna unit includes a support base, a plurality of vibrator arms mounted on the support base, extending outward from a central axis of the vibrator antenna unit and spaced apart from one another, the plurality of vibrator arms including a conductive layer having a plurality of filtering branches formed thereon in an openwork pattern and a solder mask layer, and a guide mounted on the support base, located on top of the vibrator antenna unit, and spaced apart from the plurality of vibrator arms.

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

[0006] Furthermore, the first filtering branch includes a first connecting segment and a first extension segment that is 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 that is 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 vibrator arm, and the support base passes through the through hole so as to fix the vibrator arm.

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

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

[0013] In a second aspect, an embodiment of the present invention is an antenna comprising a transducer antenna unit according to the first aspect, the transducer antenna unit further comprising a power supply base provided with a port for connecting a coaxial cable. [Effects of the Invention]

[0014] An embodiment of the present invention provides a vibrator antenna unit and antenna, the vibrator antenna unit including a support base, vibrator arms mounted on the support base, and a guide. The vibrator arms extend outward from the central axis of the vibrator antenna unit and are spaced apart from each other, and the vibrator arms include a conductive layer and a solder mask layer, and the conductive layer has a plurality of filtering branches formed thereon in an openwork pattern. The guide is located on the top of the vibrator antenna unit and is spaced apart from the plurality of vibrator arms. Thus, the vibrator antenna unit can improve isolation and achieve good decoupling effects by fitting the vibrator arms with filtering branches into the guide. [Brief explanation of the drawings]

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

[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 will be described in detail. The present invention can be fully understood by those skilled in the art without these details. Well-known methods, processes, flows, elements, and circuits will not be described in detail to avoid confusing the essence of the present invention.

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

[0018] Unless otherwise clearly specified and limited, terms such as "attached," "connected," "contacted," and "fixed" should be understood in a broad sense. For example, they may refer to a fixed connection, a detachable connection, or an integral connection. They may refer to a mechanical connection, an electrical connection, a direct connection, or an indirect connection via an intermediate medium. Unless otherwise limited, they may refer to an internal connection between two elements or an interactive relationship between two elements. The specific meanings of the above terms used in this application can be understood by those skilled in the art depending on the context.

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

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

[0021] FIG. 1 is a schematic diagram 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 FIGS. 1 and 2, the vibrator antenna unit includes a support base 1, a vibrator arm 2, and a guide 3. The vibrator arm 2 is an antenna radiating member. There are multiple vibrator arms 2, but the specific number can be set as needed. For example, there are four vibrator arms 2, which extend outward from the central axis of the vibrator antenna unit and are spaced apart from one another, forming a cross shape on the support base 1. Alternatively, the length of each vibrator arm 2 is a quarter wavelength. Furthermore, FIG. 3 is a schematic diagram of a vibrator arm according to an embodiment of the present invention. As shown in FIG. 3, the vibrator arm 2 includes a conductive layer 21 and a solder mask layer 22. The conductive layer 21 has a plurality of openwork filtering branches 23, and the solder mask layer 22 can protect the conductive layer 21 and increase capacitive coupling. 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 vibrator antenna unit, and the plane on which the guide 3 is located and the plane on which the multiple vibrator arms 2 are located are parallel to each other, that is, there is a gap between the guide 3 and the multiple vibrator arms 2. Thus, the vibrator antenna unit can improve isolation by fitting the vibrator arms 2 having the filtering branches 23 into the guide 3, and achieve a good decoupling effect.

[0022] As shown in FIGS. 2 and 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 needed. For example, 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 radio frequency wavelength, and the length of the second filtering branch 232 is 1 / 16 of the radio frequency wavelength. 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, ranging from 0.06 mm to 0.1 mm. That is, the width of the filtering branch 23 ranges from 0.06 mm to 0.1 mm. For example, the first filtering branch 231 and the second filtering branch 232 have the same width, 0.08 mm, that is, the width of the filtering branch 23 is 0.08 mm.

[0023] Note that the configurations of the first filtering branch 231 and the second filtering branch 232 can be set as needed based on the dimensional conditions of the first filtering branch 231 and the second filtering branch 232, and are not limited thereto. For example, as shown in FIG. 3 , in one embodiment, the first filtering branch 231 includes a first connecting segment 2311 connected to a main body portion of the conductive layer 21, and a first extending segment 2312 bent from an end of the first connecting segment 2311. In another embodiment, the first filtering branch 231 includes a first connecting segment 2311 connected to a main body portion of the conductive layer 21, a bending portion 2313 connected to an end of the first connecting segment 2311 and including a plurality of sub-segments bent and connected in sequence, and the first extending segment 2312 bent from an end of the bending portion 2313. Note that the configuration and position of each sub-segment in the bending portion 2313 can be set as needed, and are not limited thereto. 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 the end of the second connecting segment 2321. Furthermore, 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 met, and are not limited here.

[0024] FIG. 4 is a schematic diagram of a guide according to an embodiment of the present invention. As shown in FIG. 4, in one embodiment, the guide 3 is sheet-shaped and includes a connecting plate 31 and a guide arm 32. The guide arm 32 surrounds the guide 3 to form a window 33. The material of the guide 3 includes copper or other conductive materials. Furthermore, as shown in FIG. 2, the transducer antenna unit further includes a third fastener 8, the ends of which are connected to the connecting plate 31 and the support base 1, respectively, to securely mount the guide 3. Furthermore, the number of guide arms 32 and the number of transducer arms 2 are 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 of the four transducer arms 2, the guide arms 32 are also formed in a cross-shaped structure. Providing the guide arms 32 at a fixed distance from the transducer arms 2 is beneficial to harmonic generation between the guide 3 and the transducer arms 2, creating a filter effect and achieving the purpose of improving isolation. Meanwhile, the structure where the window 33 fits into the guide arms 32 is cross-shaped. Furthermore, 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, resulting in strong signal spatial directivity and decoupling properties after the unit is arrayed.

[0025] As shown in FIG. 3 , in one embodiment, a through-hole 24 is provided in the vibrator arm 2. Furthermore, the support base 1 fixes the vibrator arm 2 by passing through the through-hole 24. Specifically, FIG. 5 is a schematic diagram of the support base according to an embodiment of the present invention. 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 so that the vibrator arm 2 is fixed by passing through the through-hole 24. At the same time, the cross section of the support portion 12 is formed into an L-shaped structure, which can support the bottom of the vibrator arm 2. A groove-like structure that matches the first engagement portion 11 and the vibrator arm 2 can also be formed. The vibrator arm 2 can be accommodated between the first engagement portion 11 and the support portion 12 to enhance the fixing effect of the vibrator arm 2.

[0026] As shown in FIGS. 1 and 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 a first fastener according to an embodiment of the present invention. As shown in FIG. 6, the first fastener 4 is provided with a first slit 41 and a second engagement portion 42. Here, the dimensions of the first slit 41 are matched with those of the transducer arm 2 so that the first fastener 4 acts 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 that of the support base 1 so that the first fastener 4 engages with the support base 1 via the second engagement portion 42. Thus, by providing the first fastener 4, the fixation of the transducer arm 2 can be further strengthened.

[0027] As shown in FIGS. 1 and 2, in one embodiment, the vibrator antenna unit further includes a power supply base 5, a balun component 6, and a second fastener 7. Specifically, FIG. 7 is a schematic diagram of a power supply base according to an embodiment of the present invention. As shown in FIG. 7, the power supply base 5 includes a power supply circuit 51, a port 52, and a mounting groove 53. Here, the port 52 is used to connect a coaxial cable. Furthermore, FIG. 8 is a schematic diagram of a balun component according to an embodiment of the present invention. As shown in FIG. 8, the balun component 6 includes multiple baluns 61. Note that the number of baluns 61 and the number of vibrator arms 2 match. The balun 61 is also called a balanced-unbalanced impedance converter and can perform impedance conversion with ratios such as 1:1, 4:1, 6:1, 9:1, and 25:1. According to antenna theory, a dipole antenna is a balanced antenna, while a coaxial cable is an unbalanced transmission line. If they are directly connected, high-frequency current will flow through the outer sheath of the coaxial cable, affecting the antenna's radiation. Therefore, a balun component 6 is required. For example, there are four vibrator arms 2, two baluns 61, and two power supply circuits 51, with two vibrator 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 vibrator 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 base 5 and the two baluns 61 can be powered via the two power supply circuits 51.

[0028] As shown in FIG. 2 , in one embodiment, the transducer antenna unit further includes a fourth fastener 9. The transducer arm 2 is secured to the corresponding balun 61 via the fourth fastener 9, overlapping the corresponding portion. Furthermore, FIG. 9 is a schematic diagram of the second fastener mechanism according to an 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 has second slits 71. The number of second slits 71 is set to four, corresponding to the number of 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 between the transducer arm 2 and the balun 61, allowing the transducer arm 2 and the balun 61 to be accommodated and secured within the second slits 71. Furthermore, as shown in FIG. 9 , the second fastener 7 further includes a third engagement portion 72. In an alternative embodiment, there are two third engagement portions 72, which are symmetrically distributed, and the structure of the third engagement portions 72 is 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 balun component 6 and the vibrator arm 2 can be fixed.

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

[0030] Furthermore, an embodiment of the present invention provides an antenna including a transducer antenna unit. The configuration of the transducer antenna unit has been described above and will not be further described here. The antenna may be a MIMO antenna, a laptop 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 antenna, the vibrator antenna unit including a support base, vibrator arms mounted on the support base, and a guide. The vibrator arms extend outward from the central axis of the vibrator antenna unit and are spaced apart from each other, and the vibrator arms include a conductive layer and a solder mask layer, and the conductive layer has a plurality of filtering branches formed thereon in an openwork pattern. The guide is located on the top of the vibrator antenna unit and is spaced apart from the plurality of vibrator arms. Thus, the vibrator antenna unit can improve isolation and achieve good decoupling effects by fitting the vibrator arms with filtering branches into the guide.

[0032] The above is only a preferred embodiment of the present application, and is not used to limit the present application, and those skilled in the art may have various modifications and variations to 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 First connecting segment 2312 First Extension Segment 2313 Bending part 232 Second Filtering Branch 2321 Second connecting segment 2322 Second Extension Segment 24 through holes 3 Guide 31 Connection plate 32 Guide arm 33 Window 4 First zipper 41 First slit 42 second engagement portion 5 Power supply stand 51 Power supply circuit 52 ports 53 Mounting groove 6 Balun Components 61 Balun 7 Second zipper 71 Second slit 72 Third engagement portion 8 Third zipper 9 Fourth Zipper

Claims

1. A transducer antenna unit, A support base (1), a plurality of vibrator arms (2) mounted on the support base (1), extending outward from a central axis of the vibrator antenna unit and spaced apart from one another, each vibrator arm (2) including a conductive layer (21) having a plurality of filtering branches (23) formed in an openwork pattern, and a solder mask layer (22); a guide (3) installed on the support base (1), positioned at the top of the transducer antenna unit, and spaced apart from the plurality of transducer arms (2); A vibrator antenna unit comprising:

2. The filtering branch (23) At least two first filtering branches (231) with 1 / 8 of the high frequency wavelength; 2. The transducer antenna unit according to claim 1, further comprising at least one second filtering branch (232) having a high 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 the 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) 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. A through hole (24) is provided in the vibrator arm (2), 2. The vibrator antenna unit according to claim 1, wherein the support base (1) has a through-hole (24) through which the vibrator arm (2) is fixed.

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

9. The transducer antenna unit comprises: 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 vibrator arms (2) fixed to both sides thereof, and each of which is electrically connected to the power supply circuit (51) and the corresponding vibrator arm (2); The vibrator antenna unit of claim 1, further comprising a second fastener (7) fixed to the support base (1), having a second slit (71) formed therein, and fixing the balun component (6) and the corresponding vibrator 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 is characterized in that the transducer antenna unit further includes a power supply base (5) provided with a port (52) for connecting a coaxial cable.

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