Ultra-wideband cross-polarized antenna
By setting cross-set dipole antennas in the antenna housing and using coaxial connections with connectors, the existing antennas are difficult to meet the problems of multi-band and multiple inlets and exits, and the multi-port and small-size design is realized, improving the design of multiple ports and small sizes The isolation and performance of the antenna are achieved.
Patent Information
- Application Number
- CN202420901041.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-26
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2034-04-26
AI Technical Summary
Existing antennas are difficult to meet the needs of multiple frequency bands and multiple inlets and out simultaneously, resulting in increased cost and space usage, and MIMO technology requires more complex antenna designs.
Design an ultra-wideband cross-polarized antenna, by setting a cross-set dipole antenna in the shell, and connecting the dipole antenna one by one with the belt joint coaxial line to form a dipole in parallel with multiple frequency bands. Implement multi-port and small-size designs.
It achieves the need for multiple frequency bands and multiple inlets and outflows at the same time, reduces cost and space occupation, and improves the isolation and performance of the antenna.
Smart Images
Figure CN222146580U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of wireless communication technology, and in particular to an ultra-wideband cross-polarization antenna. Background Art
[0002] Antennas are an important part of wireless communication systems. They can convert the signals generated by wireless communication systems into electromagnetic wave signals transmitted in space, and can also convert electromagnetic wave signals in space into electrical signals. With the development of communication technology and the increasing market demand, there are more and more applications of different frequency bands. A product needs to meet the communication of 2G, 3G, 4G, and 5G, and also have functions such as WIFI, Bluetooth, and GPS. If different antennas are used for different frequency bands, the cost of the antenna and the space occupied will be greatly increased. Therefore, antennas need to meet more frequency bands to meet a variety of different application scenarios. At the same time, MIMO (multiple-input and multiple-output) technology is becoming more and more mature. While antennas need to meet multiple frequency bands, multi-input and multi-output multi-antenna systems are also needed. Utility Model Content
[0003] The purpose of the present application is to provide an ultra-wideband cross-polarization antenna to address the deficiencies in the above-mentioned prior art, which can meet multiple frequency bands at the same time, has multiple ports and a smaller size.
[0004] To achieve the above purpose, the technical solution adopted in the embodiment of the present application is as follows:
[0005] An embodiment of the present application provides an ultra-wideband cross-polarization antenna, comprising: a shell, a coaxial line with a connector, and at least one group of cross-polarization antennas spaced apart and cross-arranged along a preset direction in the shell, each group of cross-polarization antennas comprising two dipole antennas spaced apart and cross-arranged along a preset direction, the dipole antenna comprising a dielectric plate, and at least two pairs of dipoles with different frequency bands and connected in parallel arranged on the dielectric plate; the coaxial line with a connector corresponds one-to-one to the dipole antenna, one end of the coaxial line with a connector is a radio frequency connector, and the other end is a stripped opening, the radio frequency connector is used to connect to an external device, and the stripped opening is connected to the dipole of the corresponding dipole antenna.
[0006] Optionally, the angle between the two dipole antennas in each group of cross-polarization antennas is 90°.
[0007] Optionally, a vertical distance between two dipole antennas in each group of cross-polarization antennas is 12 mm-15 mm.
[0008] Optionally, the number of the cross-polarization antennas is two groups, and the angle between two dipole antennas close to each other in the two groups of cross-polarization antennas is 45°.
[0009] Optionally, a vertical distance between two dipole antennas close to each other in the two groups of cross-polarization antennas is 40 mm-60 mm.
[0010] Optionally, each pair of dipoles includes a first branch and a second branch, and a first pad and a second pad are also provided on the dielectric plate. The first branches of at least two pairs of dipoles are connected to the first pad at the same time, and the second branches of at least two pairs of dipoles are connected to the second pad at the same time; the stripping opening includes a coaxially arranged inner conductor, a dielectric layer and an outer conductor, the dielectric layer wraps the inner conductor, the outer conductor wraps the dielectric layer, one of the inner conductor and the outer conductor is connected to the first pad, and the other is connected to the second pad.
[0011] Optionally, the shell includes a base and an upper cover matched with the base, the cross-polarization antenna is fixed on the base, and the upper cover and the base are detachably connected to form a space for accommodating the cross-polarization antenna.
[0012] Optionally, the shell includes a base and an upper cover that cooperates with the base, the cross-polarization antenna is fixed on the base, the upper cover and the base are detachably connected to form a space for accommodating the cross-polarization antenna; a bracket is also provided in the shell, the bracket is fixed on the base, one cross-polarization antenna is fixed on the base, and another cross-polarization antenna is fixed on the side of the bracket facing away from the base.
[0013] Optionally, the dielectric plate is rectangular, and the dipole extends along the length direction of the dielectric plate.
[0014] Optionally, the shell and the bracket are both made of insulating materials.
[0015] The beneficial effects of this application include:
[0016] The present application provides an ultra-wideband cross-polarization antenna, comprising: a housing, a coaxial line with a connector, and at least one group of cross-polarization antennas spaced and cross-arranged along a preset direction in the housing, each group of cross-polarization antennas comprising two dipole antennas spaced and cross-arranged along a preset direction, the dipole antenna comprising a dielectric plate, and at least two pairs of dipoles with different frequency bands and connected in parallel arranged on the dielectric plate; the coaxial line with a connector corresponds to the dipole antenna one-to-one, one end of the coaxial line with a connector is a radio frequency connector, and the other end is a stripping port, the radio frequency connector is used to connect to an external device, and the stripping port is connected to the dipole of the corresponding dipole antenna. The ultra-wideband cross-polarization antenna is provided with at least one group of cross-polarization antennas, and the dipole antenna forming the cross-polarization antenna is provided to include at least two dipoles with different frequency bands and connected in parallel, and at least two coaxial lines with connectors are connected to the dipole antenna one-to-one, so that the ultra-wideband cross-polarization antenna can meet multiple frequency bands at the same time, and has multiple ports and a smaller size. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.
[0018] Figure 1 One of the exploded views of the ultra-wideband cross-polarization antenna provided in an embodiment of the present application;
[0019] Figure 2 A schematic diagram of the structure of a dipole antenna in an ultra-wideband cross-polarization antenna provided in an embodiment of the present application;
[0020] Figure 3 This is the second exploded view of the ultra-wideband cross-polarization antenna provided in an embodiment of the present application.
[0021] Icon: 100-ultra-wideband cross-polarization antenna; 111-base; 112-upper cover; 113-support column; 114-bracket; 120-coaxial line with connector; 121-RF connector; 130-cross-polarization antenna; 131-dipole antenna; 1311-dielectric plate; 1312-dipole; 1312a-first branch; 1312b-second branch; 1313-first pad; 1314-second pad; 140-bolt. DETAILED DESCRIPTION
[0022] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.
[0023] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for protection, but merely represents selected embodiments of the present application. It should be noted that, in the absence of conflict, the various features in the embodiments of the present application can be combined with each other, and the combined embodiments are still within the scope of protection of the present application.
[0024] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.
[0025] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the application is usually placed when in use. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.
[0026] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0027] Please refer to Figure 1 and Figure 2 The embodiment of the present application provides an ultra-wideband cross-polarization antenna 100, comprising: a shell, a coaxial line with a connector 120, and at least one group of cross-polarization antennas 130 spaced and cross-arranged along a preset direction in the shell; each group of cross-polarization antennas 130 comprises two dipole antennas 131 spaced and cross-arranged along a preset direction, the dipole antenna 131 comprises a dielectric plate 1311, and at least two pairs of dipoles 1312 with different frequency bands and connected in parallel arranged on the dielectric plate 1311; the coaxial line with a connector 120 corresponds to the dipole antenna 131 one by one, one end of the coaxial line with a connector 120 is a radio frequency connector 121, and the other end is a stripping port, the radio frequency connector 121 is used to connect to an external device, and the stripping port is connected to the dipole 1312 of the corresponding dipole antenna 131.
[0028] Specifically, the housing is used to accommodate at least one group of cross-polarized antennas 130, each group of cross-polarized antennas 130 includes two dipole antennas 131, the planes where the dielectric plates 1311 of the two dipole antennas 131 are located are parallel to each other, and the dielectric plates 1311 are arranged crosswise to form the cross-polarized antennas 130. When the number of cross-polarized antennas 130 is greater than one group, two or more groups of cross-polarized antennas 130 are arranged at intervals along a preset direction in the housing, and two adjacent dipole antennas 131 in two adjacent groups of cross-polarized antennas 130 are arranged crosswise. Crosswise arrangement of two dipole antennas 131 in the same group of cross-polarized antennas 130 and crosswise arrangement of two adjacent dipole antennas 131 in two adjacent groups of cross-polarized antennas 130 can improve the isolation between the dipole antennas 131 and reduce the mutual interference between the dipole antennas 131, so that the interval between the two adjacent dipole antennas 131 can be set smaller to reduce the size of the ultra-wideband cross-polarized antenna 100.
[0029] Each dipole antenna 131 includes a dielectric plate 1311 and at least two pairs of dipoles 1312 laid on the dielectric plate 1311. The frequency bands of at least two pairs of dipoles 1312 on the same dipole antenna 131 are different from each other and are connected in parallel, so that the ultra-wideband cross-polarization antenna 100 can meet multiple frequency bands at the same time. For example, the number of dipoles 1312 on the same dipole antenna 131 is four pairs, wherein the frequency bands of the four pairs of dipoles 1312 are 1400MHz-4200MHz, 600MHz-960MHz, 420MHz-470MHz and 5000MHz-6000MHz, respectively. The dipole antenna 131 can adopt a printed circuit board process to apply metal (such as copper) on the dielectric plate 1311 to form dipoles 1312 with different frequency bands, and the frequency band of the dipole 1312 can be controlled by the wiring length. Preferably, the flame retardancy grade of the dielectric plate 1311 material is FR4, the thickness of the dielectric plate 1311 is 0.8 mm-1.2 mm, the relative dielectric constant is 4.3-4.5, the length is 140 mm-160 mm, and the width is 45 mm-55 mm.
[0030] In the ultra-wideband cross-polarization antenna 100, the number of the connector coaxial lines 120 is equal to the number of the dipole antennas 131, and each connector coaxial line 120 corresponds to a dipole antenna 131 and is electrically connected to the dipole 1312 of the dipole antenna 131. The other end of the connector coaxial line 120 is a radio frequency connector 121 for connecting to an external device, so that the ultra-wideband cross-polarization antenna 100 has at least two ports.
[0031] In summary, the ultra-wideband cross-polarization antenna 100 provided in the embodiment of the present application is configured by setting at least one group of cross-polarization antennas 130, and configuring the dipole antenna 131 forming the cross-polarization antenna 130 to include at least two dipoles 1312 with different frequency bands and connected in parallel, and using at least two coaxial lines with connectors 120 to be connected one-to-one with the dipole antenna 131, so that the ultra-wideband cross-polarization antenna 100 can meet multiple frequency bands at the same time, and has multiple ports and a smaller size.
[0032] The two dipole antennas 131 in the same group of cross-polarized antennas 130 are cross-arranged. If the angle between the two dipole antennas 131 is too small or too large, the isolation between the two dipole antennas 131 will be poor. Preferably, the angle between the two dipole antennas 131 in the same group of cross-polarized antennas 130 is 80°-100°. Within this range, the isolation between the two dipole antennas 131 is better, and the influence between the two dipole antennas 131 is not significant. Furthermore, the angle between the two dipole antennas 131 in each group of cross-polarized antennas 130 is 90°. At this time, the isolation between the two dipole antennas 131 is the best, and the performance of the obtained ultra-wideband cross-polarized antenna 100 is better.
[0033] The smaller the vertical distance between the two dipole antennas 131 in the same group of cross-polarized antennas 130, the smaller the size of the ultra-wideband cross-polarized antenna 100. However, if the distance between the dipole antennas 131 is too close, the isolation between the two will be poor, and the mutual influence will lead to the impedance instability and poor performance of the ultra-wideband cross-polarized antenna 100. Therefore, optionally, the vertical distance between the two dipole antennas 131 in each group of cross-polarized antennas 130 is 12mm-15mm. When the vertical distance between the two dipole antennas 131 is within this range, the size of the ultra-wideband cross-polarized antenna 100 can be controlled within a smaller range, and at the same time, the isolation between the two dipole antennas 131 in the same group of cross-polarized antennas 130 can be better, thereby ensuring that the ultra-wideband cross-polarized antenna 100 has better performance.
[0034] In order to further increase the number of frequency bands and ports that the ultra-wideband cross-polarization antenna 100 can meet, optionally, please refer to Figure 3 The number of the cross-polarization antennas 130 is two groups, and the angle between two dipole antennas 131 close to each other in the two groups of cross-polarization antennas 130 is 45°.
[0035] The two groups of cross-polarized antennas 130 correspond to four dipole antennas 131 and four coaxial lines with connectors 120, so that the ultra-wideband cross-polarized antenna 100 has four ports, which can meet the needs of more frequency bands and the needs of multiple inputs and multiple outputs. In addition, the four dipole antennas 131 are integrated into the same housing, which has a higher degree of integration and saves more space. The angle between the two dipole antennas 131 close to each other in the two groups of cross-polarized antennas 130 is set to 45°, which can also make the isolation of the two groups of cross-polarized antennas 130 better, further improving the performance of the ultra-wideband cross-polarized antenna 100.
[0036] The smaller the vertical distance between the two groups of cross-polarized antennas 130, the smaller the size of the ultra-wideband cross-polarized antenna 100. However, if the distance between the two groups of cross-polarized antennas 130 is too close, the isolation between the two groups will be poor, and the mutual influence will lead to the impedance instability and poor performance of the ultra-wideband cross-polarized antenna 100. Therefore, optionally, the vertical distance between the two dipole antennas 131 close to each other in the two groups of cross-polarized antennas 130 is 40mm-60mm. When the vertical distance between the two groups of cross-polarized antennas 130 is within this range, the size of the ultra-wideband cross-polarized antenna 100 can be controlled within a smaller range, and the isolation between the two groups of cross-polarized antennas 130 can be better, thereby ensuring that the ultra-wideband cross-polarized antenna 100 has better performance.
[0037] Each dipole antenna 131 includes at least two pairs of dipoles 1312. Optionally, each pair of dipoles 1312 includes a first branch 1312a and a second branch 1312b. The first branch 1312a and the second branch 1312b may be symmetrically arranged relative to the center line of the dielectric plate 1311. The dielectric plate 1311 is also provided with a first pad 1313 and a second pad 1314. The first pad 1313 and the second pad 1314 are DC open-circuited. The first branches 1312a of at least two pairs of dipoles 1312 are simultaneously connected to the first pad 1313, and the second branches 1312b of at least two pairs of dipoles 1312 are simultaneously connected to the second pad 1314. The stripping end includes a coaxially arranged inner conductor, a dielectric layer and an outer conductor, the dielectric layer wraps the inner conductor, and the outer conductor wraps the dielectric layer. One of the inner conductor and the outer conductor is connected to the first soldering pad 1313, and the other is connected to the second soldering pad 1314, thereby realizing the electrical connection between the coaxial line 120 with a connector and the dipole 1312.
[0038] Optionally, the dielectric plate 1311 is rectangular, and the dipole 1312 extends along the length direction of the dielectric plate 1311. This makes the adjustable range of the wiring length of the dipole 1312 wider, and the number of frequency bands satisfied by the dipole antenna 131 is greater. Furthermore, at least two pairs of dipoles 1312 can be distributed along the width direction of the dielectric plate 1311 to more reasonably use the space on the dielectric plate 1311.
[0039] Optionally, in one implementable manner of an embodiment of the present application, the shell includes a base 111 and an upper cover 112 cooperating with the base 111, the cross-polarization antenna 130 is fixed on the base 111, and the upper cover 112 and the base 111 are detachably connected to form a space for accommodating the cross-polarization antenna 130.
[0040] For example, the upper cover 112 and the base 111 are detachably connected by a buckle, and the dipole antennas 131 in the cross-polarized antenna 130 are fixed to the base 111 by bolts 140. In order to ensure the interval between the two dipole antennas 131 in the same group of cross-polarized antennas 130, a raised support column 113 may be provided on the base 111, and the lower dipole antenna 131 is directly fixed to the base 111, and the upper dipole antenna 131 is fixed to the support column 113.
[0041] When there are two groups of cross-polarized antennas 130 in the housing, both groups of cross-polarized antennas 130 are arranged in the housing. In order to achieve isolation of the two groups of cross-polarized antennas 130, optionally, the housing includes a base 111 and an upper cover 112 matched with the base 111, the cross-polarized antennas 130 are fixed on the base 111, and the upper cover 112 and the base 111 are detachably connected to form a space for accommodating the cross-polarized antennas 130; a bracket 114 is also provided in the housing, the bracket 114 is fixed on the base 111, one cross-polarized antenna 130 is fixed on the base 111, and the other cross-polarized antenna 130 is fixed on the side of the bracket 114 away from the base 111. The bracket 114 is used to isolate the two groups of cross-polarized antennas 130, and the distance between the two is kept within a reasonable range.
[0042] Optionally, in one implementable manner of the embodiment of the present application, the materials of the housing and the bracket 114 are both insulating materials, thereby isolating the cross-polarized antennas 130 from the outside world and isolating the two groups of cross-polarized antennas 130 from each other.
[0043] For example, the material of the housing is non-metal, and the material of the bracket 114 is plastic.
[0044] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. The present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. An ultra-wideband cross-polarization antenna, characterized in that: include: A housing, a coaxial line with a connector, and at least one set of cross-polarized antennas spaced and intersecting along a preset direction within the housing, each set of cross-polarized antennas comprising two dipole antennas spaced and intersecting along the preset direction, each dipole antenna comprising a dielectric plate and at least two pairs of dipoles with different frequency bands arranged on the dielectric plate and connected in parallel; The coaxial line with connector corresponds to the dipole antenna one-to-one. One end of the coaxial line with connector is a radio frequency connector and the other end is a stripping port. The radio frequency connector is used to connect to an external device, and the stripping port is connected to the dipole of the corresponding dipole antenna.
2. The ultra-wideband cross-polarization antenna according to claim 1, wherein: The included angle between the two dipole antennas in each group of the cross-polarization antennas is 90°.
3. The ultra-wideband cross-polarization antenna according to claim 1, wherein: The vertical distance between the two dipole antennas in each group of the cross-polarization antennas is 12 mm to 15 mm.
4. The ultra-wideband cross-polarization antenna according to claim 2, wherein: There are two groups of cross-polarization antennas, and the angle between two dipole antennas close to each other in the two groups of cross-polarization antennas is 45°.
5. The ultra-wideband cross-polarization antenna according to claim 4, wherein: The vertical distance between two dipole antennas close to each other in the two groups of cross-polarization antennas is 40 mm to 60 mm.
6. The ultra-wideband cross-polarization antenna according to claim 1, wherein: Each pair of dipoles includes a first branch and a second branch, and the dielectric plate is further provided with a first pad and a second pad, the first branches of at least two pairs of dipoles are simultaneously connected to the first pad, and the second branches of at least two pairs of dipoles are simultaneously connected to the second pad; The stripping port includes a coaxially arranged inner conductor, a dielectric layer and an outer conductor, the dielectric layer wraps the inner conductor, the outer conductor wraps the dielectric layer, one of the inner conductor and the outer conductor is connected to the first pad, and the other is connected to the second pad.
7. The ultra-wideband cross-polarization antenna according to claim 1, wherein: The housing includes a base and an upper cover matched with the base. The cross-polarization antenna is fixed on the base. The upper cover and the base are detachably connected to form a space for accommodating the cross-polarization antenna.
8. The ultra-wideband cross-polarization antenna according to claim 4, wherein: The housing includes a base and an upper cover matched with the base, the cross-polarization antenna is fixed to the base, and the upper cover and the base are detachably connected to form a space for accommodating the cross-polarization antenna; A bracket is further provided in the shell, and the bracket is fixed on the base. One of the cross-polarization antennas is fixed on the base, and the other cross-polarization antenna is fixed on a side of the bracket away from the base.
9. The ultra-wideband cross-polarization antenna according to claim 1, wherein: The dielectric plate is rectangular, and the dipole extends along the length direction of the dielectric plate.
10. The ultra-wideband cross-polarization antenna according to claim 8, wherein: The shell and the bracket are both made of insulating materials.