A dual-polarized broadband oscillator and antenna

Abstract

The present invention discloses a dual-polarized broadband oscillator and an antenna. The oscillator includes: a first radiation unit, a second radiation unit, a first air microstrip line, a second air microstrip line, a coaxial cable, and a reflector. Using sheet metal material as the main material of the dual-polarized broadband oscillator can meet the requirement of lightweight while reducing the design cost. According to the sheet metal material, the first radiation unit and the second radiation unit are arranged on the reflector in a targeted manner, constructing a feeding space for the orthogonal arrangement of the first air microstrip line and the second air microstrip line, creating conditions for the requirement of miniaturization, and facilitating the realization of oscillator array superposition. While meeting the requirements of users in multiple usage scenarios, it realizes multi-band coverage without affecting the band gain, meeting the requirements of users in multiple usage scenarios.

Description

Technical Field

[0001] The present invention relates to the technical field of antennas, and particularly relates to a dual-polarized broadband oscillator and an antenna. Background Art

[0002] With the development of the communication industry and the popularization of the requirements for miniaturization of base station antennas, most antennas are designed in the direction of miniaturization and light weight. However, the reduction of the antenna size will affect the reduction of its frequency band gain. In the prior art, most broadband oscillators are made of PCB material, which is not only expensive, but also difficult to achieve the use of array superposition during the design of the PCB oscillator, and it is difficult to meet the requirements of the corresponding frequency bands in multiple usage scenarios of customers.

[0003] Therefore, it is difficult for the above-mentioned oscillators to achieve miniaturization and light-weight design on the basis of cost savings and without affecting the frequency band gain, and to meet the needs of users in multiple scenarios. Summary of the Invention

[0004] The object of the present invention is to provide a dual-polarized broadband oscillator and an antenna to solve one or more technical problems existing in the prior art, and at least provide a beneficial choice or create conditions.

[0005] The solution of the present invention to solve its technical problems is: providing a dual-polarized broadband oscillator and an antenna.

[0006] According to an embodiment of the first aspect of the present invention, a dual-polarized broadband oscillator includes: a first radiation unit, a second radiation unit, a first air microstrip line, a second air microstrip line, a coaxial cable, and a reflector;

[0007] The first radiation unit, the second radiation unit, the first air microstrip line, the second air microstrip line, and the reflector are all made of sheet metal. The first radiation unit and the second radiation unit have the same structure. The first radiation unit and the second radiation unit enclose a feeding space for the orthogonal arrangement of the first air microstrip line and the second air microstrip line. The first radiation unit and the second radiation unit are orthogonally arranged on the reflector;

[0008] The first air microstrip line is connected to the second air microstrip line. The first air microstrip line is connected to the first radiation unit. The second air microstrip line is connected to the second radiation unit. The tail of the first air microstrip line passes through the reflector to lead out a first feeding point. The tail of the second air microstrip line passes through the reflector to lead out a second feeding point. The coaxial cable is respectively connected to the first feeding point and the second feeding point to realize the input and output of signals.

[0009] Further, the first radiation unit includes: a first oscillator lobe and a second oscillator lobe;

[0010] The first oscillator lobe and the second oscillator lobe are arranged on the reflector at intervals and symmetrically. The first oscillator lobe and the second oscillator lobe have the same structure. The first oscillator lobe includes a first fixed section, a first vertical section, and a first broadband expansion section;

[0011] The first vertical section is perpendicular to the reflector. The first vertical section is connected to the first air microstrip line. The bottom end of the first vertical section is bent outward at 90° to form the first fixed section, and the first fixed section is connected to the reflector. The top end of the first vertical section is bent outward at 90° to form the first broadband expansion section. The tail of the first broadband expansion section is bent downward at 90°. The first broadband expansion section is of a trapezoidal structure.

[0012] Furthermore, a dual-polarization broadband oscillator further includes: a coupling sheet;

[0013] The coupling sheet is made of sheet metal. The coupling sheet is connected to the reflector and arranged around the first radiation unit and the second radiation unit. The coupling sheet includes a second fixed section, a second vertical section, and a second broadband expansion section;

[0014] The bottom end of the second vertical section is bent inward at 90° to form the second fixed section, and the second fixed section is connected to the reflector. The top end of the second vertical section is bent inward at 90° to form the second broadband expansion section. The second broadband expansion section is at 45° to the first radiation unit and at 45° to the second radiation unit.

[0015] Furthermore, a dual-polarization broadband oscillator further includes: a support fixing member, a fixing plug-in, and a director;

[0016] The director is made of sheet metal. The director is clamped with the fixed top post of the support fixing member. The fixing members of the support fixing member are respectively connected to the tops of the first radiation unit and the second radiation unit. The fixing plug-in passes through the tops of the first air microstrip line and the second air microstrip line and is inserted into the jack on the support fixing member. The fixed bottom posts of the support fixing member are respectively inserted into the first air microstrip line and the second air microstrip line.

[0017] Furthermore, the first air microstrip line includes: a horizontal section, a third vertical section, and a fourth vertical section;

[0018] One end of the horizontal section is bent downward at 90° to form the third vertical section. The end of the third vertical section is connected to the first oscillator lobe. The other end of the horizontal section is bent downward at 90° to form the fourth vertical section. The fourth vertical section is connected to the second oscillator lobe. The tail of the fourth vertical section passes through the reflector to lead out the first feeding point. A fixing hole is provided on the horizontal section. The fixing hole is inserted with the fixed bottom post. The fixing plug-in passes through the fixing hole.

[0019] Furthermore, a dual-polarization broadband oscillator further includes: a clamping and fixing member;

[0020] The first oscillator lobe and the second oscillator lobe are both provided with clamping interfaces, the clamping parts on the clamping and fixing part are clamped with the clamping interfaces, the end of the third vertical section of the first air microstrip line passes through the fixing port on the clamping and fixing part and is connected with the first oscillator lobe, and the fourth vertical section of the first air microstrip line passes through the fixing port on the clamping and fixing part and is connected with the second oscillator lobe.

[0021] Furthermore, a dual-polarized broadband oscillator further includes: an isolation and fixing part;

[0022] The reflector is provided with a feeding port, the isolation and fixing part is arranged on the back of the reflector and on the feeding port, the tails of the first air microstrip line and the second air microstrip line both pass through the feeding port and are clamped with the isolation and fixing part, and the tails of the first air microstrip line and the second air microstrip line do not contact the feeding port.

[0023] Furthermore, the value range of the upper bottom dimension of the first frequency extension band is 0.04λ to 0.1λ, and the value range of the lower bottom dimension of the first frequency extension band is 0.08λ to 0.14λ, where λ is the wavelength of the low-frequency.

[0024] Furthermore, the value range of the dimension of the second frequency extension band is 0.5λ to 2λ, where λ is the wavelength of the low-frequency.

[0025] According to an embodiment of the second aspect of the present invention, an antenna includes the dual-polarized broadband oscillator described in the embodiment of the first aspect of the present invention, and the plurality of dual-polarized broadband oscillators are arranged in an array.

[0026] The beneficial effects of the present invention are as follows: Using sheet metal as the main material of the dual-polarized broadband oscillator can meet the requirement of lightweight while reducing the design cost. According to the sheet metal material, the first radiation unit and the second radiation unit are arranged on the reflector in a targeted manner, constructing a feeding space for the orthogonal arrangement of the first air microstrip line and the second air microstrip line, creating conditions for the requirement of miniaturization, and facilitating the realization of oscillator array superposition. While meeting the requirements of multiple usage scenarios of users, it does not affect the frequency band gain. On the basis of achieving lightweight, miniaturization and cost savings, the operating frequency bands of the dual-polarized broadband oscillator of the present invention are: 617 MHz - 960 MHz, 1452 MHz - 2700 MHz, 3300 MHz - 4200 MHz, achieving multi-band coverage, meeting the requirements of multiple usage scenarios of users. Compared with the traditional antenna in the prior art that needs to use a combination of low, medium and high oscillators and is connected together with a combiner, the structure of this oscillator is simple, and only a single oscillator can meet the requirement of multi-band coverage of the traditional antenna, and the polarization mode is ±45° polarization. Description of the Drawings

[0027] Figure 1It is a schematic structural diagram of a dual-polarized broadband oscillator provided by an embodiment of the present invention;

[0028] Figure 2 It is a schematic structural diagram of a dual-polarized broadband oscillator provided by another embodiment of the present invention;

[0029] Figure 3 It is a schematic structural diagram of an air microstrip line and a support fixing member provided by an embodiment of the present invention;

[0030] Figure 4 It is a schematic structural diagram of a dual-polarized broadband oscillator provided by another embodiment of the present invention;

[0031] Figure 5 It is a partial dimension structural diagram of an oscillator lobe provided by an embodiment of the present invention;

[0032] Figure 6 It is the radiation pattern of the H-plane of a dual-polarized broadband oscillator in the 617 MHz - 960 MHz frequency band provided by an embodiment of the present invention;

[0033] Figure 7 It is the radiation pattern of the H-plane of a dual-polarized broadband oscillator in the 1452 MHz - 2700 MHz frequency band provided by an embodiment of the present invention;

[0034] Figure 8 It is the radiation pattern of the H-plane of a dual-polarized broadband oscillator in the 3300 MHz - 4200 MHz frequency band provided by another embodiment of the present invention;

[0035] Figure 9 It is the test result of voltage standing wave ratio and isolation provided by an embodiment of the present invention;

[0036] Figure 10 It is a schematic structural diagram of an antenna provided by an embodiment of the present invention;

[0037] Figure 11 It is a schematic diagram of the feeding network structure of an antenna provided by an embodiment of the present invention.

[0038] Reference numerals: 100, dual-polarized broadband oscillator; 110, first oscillator lobe; 111, first fixed section; 112, first vertical section; 113, first frequency expansion band; 120, second oscillator lobe; 130, third oscillator lobe; 140, fourth oscillator lobe; 200, card interface;

[0039] 300, first air microstrip line; 310, first feeding point; 320, horizontal section; 321, fixing hole; 330, third vertical section; 340, fourth vertical section; 400, second air microstrip line; 410, second feeding point;

[0040] 500, Reflector; 510, Feed port; 520, Isolation and fixing member; 600, Coupling sheet; 610, Second fixing section; 620, Second vertical section; 630, Second frequency extension band; 700, Director; 800, Support and fixing member; 801, Fixed top column; 802, Jack; 803, Fixing member; 810, Snap fixing member; 820, Fixed plug-in member;

[0041] 900, First shunt; 901, First connection point; 902, Second connection point; 903, Third connection point; 910, Second shunt; 911, Fourth connection point; 912, Fifth connection point; 913, Sixth connection point; 920, -45° polarization connector; 930, +45° polarization connector;

[0042] 940, First path; 941, Second path; 942, Third path; 943, Fourth path; 944, Fifth path; 945, Sixth path; 950, First dual-polarization broadband dipole; 960, Second dual-polarization broadband dipole. Detailed implementation manners

[0043] In order to make the objectives, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, and cannot be construed as a limitation to the present invention.

[0044] It should be noted that although the functional modules are divided in the system schematic diagram, in some cases, the steps shown or described may be executed differently from the module division in the system or the sequence in the flowchart. The terms "first", "second", etc. in the description of the specification, claims and the above drawings are used to distinguish similar objects, and do not have to be used to describe a specific order or sequence.

[0045] In the description of the present invention, it should be noted that unless otherwise clearly defined, terms such as "set", "installed", "connected", etc. should be understood in a broad sense. Those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific content of the technical solution.

[0046] Referring to Figures 1 to 4 , according to an embodiment of the first aspect of the present invention, a dual-polarization broadband dipole includes: a coaxial cable, a first air microstrip line 300, a second air microstrip line 400, a reflector 500, a first radiation unit, and a second radiation unit.

[0047] The first radiation unit and the second radiation unit are orthogonally arranged on the reflector 500 to form a dual-polarization posture. They are connected to the reflector 500 and have the same structure. The first radiation unit and the second radiation unit enclose a feeding space, that is, a cuboid space with a square bottom is enclosed in the center of the two groups of radiation units. This space is the feeding space, which is used to arrange the first air microstrip line 300 and the second air microstrip line 400, so as to realize the arrangement of the feeding network. By constructing the feeding space, conditions are created for the miniaturization requirement and it is convenient to enhance the reception and transmission of electromagnetic wave signals.

[0048] In the feeding space, the first air microstrip line 300 and the second air microstrip line 400 are orthogonally arranged. They have the same structure, are in a "cross" shape, and are arranged with an offset up and down at the intersection. The center of the top of the first air microstrip line 300 is connected to the center of the top of the second air microstrip line 400. By using air microstrip lines, impedance matching is made easier. Considering the cost and lightweight requirements of the oscillator, the material of the air microstrip line is also made of sheet metal. Among them, neither the first air microstrip line 300 nor the second air microstrip line 400 is connected to the reflector 500.

[0049] The two groups of air microstrip lines are respectively connected to the two groups of radiation units. The first air microstrip line 300 is connected to the first radiation unit, and the second air microstrip line 400 is connected to the second radiation unit. The tail of the first air microstrip line 300 passes through the reflector 500 without contacting the reflector 500, and the first feeding point 310 is led out. The tail of the second air microstrip line 400 passes through the reflector 500 without contacting the reflector 500, and the second feeding point 410 is led out. By leading out the first feeding point 310 through the first air microstrip line 300 and the second feeding point 410 through the second air microstrip line 400, when several oscillator arrays need to be superimposed, it is convenient to set up various feeding networks and corresponding feeding methods. In addition, when several oscillators are required to implement the technical characteristics of a MIMO antenna, multi-channel lines are set through the feeding points, which is convenient to meet the usage scenarios of multi-input multi-output data reception and transmission and obtain better pattern effects.

[0050] Both the first feeding point 310 and the second feeding point 410 are used for welding coaxial cables to realize the input and output of electromagnetic wave signals. Among them, fixed grooves are provided at the tails of the first air microstrip line 300 and the second air microstrip line 400, and it is convenient to fix the coaxial cables through the fixed grooves.

[0051] For example, when electromagnetic excitation is fed into the first feeding point 310 and the second feeding point 410 by means of coaxial feeding through a coaxial cable, signals are transmitted to the first radiation unit and the second radiation unit through the corresponding first air microstrip line 300 and second air microstrip line 400, and then electromagnetic wave signals are radiated outward through the first radiation unit and the second radiation unit.

[0052] In this embodiment, except for the coaxial cable, the rest of the components are made of sheet metal. Compared with the prior art where the oscillator still partially uses PCB material, the oscillator of the present invention has a full sheet metal design, which saves costs and meets the requirements of lightweight at the same time.

[0053] According to the sheet metal material, the first radiation unit and the second radiation unit are arranged on the reflector 500 in a targeted manner, constructing a feeding space for the orthogonal arrangement of the first air microstrip line 300 and the second air microstrip line 400, creating conditions for the miniaturization requirement, and facilitating the realization of oscillator array superposition. While meeting the requirements of multiple usage scenarios of users, it does not affect the frequency band gain.

[0054] The main body of the oscillator is designed as a half-wave oscillator structure, which can achieve ±45° polarization. On the basis of realizing lightweight, miniaturization and cost saving, the dual-polarization broadband oscillator 100 of the present invention still has a good broadband. Its operating frequency bands are: 617 MHz - 960 MHz, 1452 MHz - 2700 MHz, 3300 MHz - 4200 MHz. The frequency bands of the oscillator can cover the required frequencies of 2G, 3G, 4G, and 5G mobile communications. Compared with the prior art where three types of oscillators with low, medium and high frequencies need to be combined and then connected together with a combiner, the oscillator of the present application only needs a single oscillator to meet the requirement of covering multiple frequency bands of the traditional antenna, can work stably in the above-mentioned operating frequency bands, realize the coverage of multiple frequency bands, and reduce the labor cost of oscillator assembly.

[0055] Refer to Figures 1 to 5 , in some embodiments of the present invention, the first radiation unit includes: a first oscillator lobe 110 and a second oscillator lobe 120. The structures of the first radiation unit and the second radiation unit are the same. Therefore, the second radiation unit includes: a third oscillator lobe 130 and a fourth oscillator lobe 140. The first oscillator lobe 110, the second oscillator lobe 120, the third oscillator lobe 130 and the fourth oscillator lobe 140 have the same structure. The first oscillator lobe 110, the second oscillator lobe 120, the third oscillator lobe 130 and the fourth oscillator lobe 140 enclose a feeding space in the shape of a cuboid with a square bottom surface.

[0056] For a single oscillator antenna, preferably, the above-mentioned oscillator lobes can enclose a feeding space around the central area of the reflector 500 to prevent the signal sensitivities received by different oscillator lobes from being inconsistent and some oscillator lobes from being interfered by the signals of the others.

[0057] The first oscillator lobe 110 and the second oscillator lobe 120 are symmetrically arranged on the reflector 500 with respect to the spaced feeding space; in the spaced feeding space, the third oscillator lobe 130 and the fourth oscillator lobe 140 are symmetrically arranged on the reflector 500, and the first oscillator lobe 110 is adjacent to the third oscillator lobe 130 and the fourth oscillator lobe 140 respectively.

[0058] Since the structures of the oscillator lobes are the same, in this embodiment, the structure of the first oscillator lobe 110 of the first radiation unit is taken as an example for detailed description. The first oscillator lobe 110 includes: a first fixed section 111, a first vertical section 112, and a first frequency broadening section 113.

[0059] The bottom surface of the first fixed section 111 is fixed on the front surface of the reflector 500, and the first fixed section 111 is formed by bending the bottom end of the first vertical section 112 outward by 90°. The first vertical section 112 is perpendicular to the front surface of the reflector 500, and the value range of the height dimension of the first vertical section 112 is 0.1λ - 0.25λ, and the value range of the width dimension of the first vertical section 112 is 0.04λ - 0.1λ.

[0060] The first frequency broadening section 113 is formed by bending the top end of the first vertical section 112 outward by 90°. The first frequency broadening section 113 is a trapezoidal structure, which can be an isosceles trapezoid. The trapezoidal structure can broaden the frequency bandwidth. Then the value range of the upper base dimension is 0.04λ - 0.1λ, and the value range of the lower base dimension is 0.08λ - 0.14λ. The tail of the first frequency broadening section 113 is bent downward by 90°, and the bent section is parallel to the first vertical section 112 to reduce the size of the oscillator lobe, thereby reducing the size length of the local oscillator and creating conditions for the miniaturization requirement.

[0061] Among them, the dimension between the bent section of the first oscillator lobe 110 and the bent section of the second oscillator lobe 120 is calculated based on the wavelength λ of the low-frequency frequency, and its value range is 0.2λ - 0.7λ. The side length of the square bottom surface of the feeding space can be the width dimension of the first vertical section 112. Therefore, in this embodiment, by determining the required low-frequency frequency, calculating the corresponding wavelength, and designing the corresponding size of the oscillator lobe, the sizes of the feeding space and the microstrip line are determined one by one.

[0062] That is to say, the included angle between the symmetry axis of the first frequency broadening section 113 of the first oscillator lobe 110 and the symmetry axis of the first frequency broadening section of the third oscillator lobe 130 is 90°, and the included angle with the symmetry axis of the first frequency broadening section of the fourth oscillator lobe 140 is 90°.

[0063] The oscillator lobe made of sheet metal material is easy to be bent. After determining the wavelength of the required low-frequency frequency, the oscillator lobe can be designed specifically. While achieving miniaturization and light weight, it does not affect the frequency band gain and meets the requirements of multi-band coverage.

[0064] Reference Figures 1 to 5 In some embodiments of the present invention, the first air microstrip line 300 includes: a horizontal section 320, a third vertical section 330, and a fourth vertical section 340. The first air microstrip line 300 has the same structure as the second air microstrip line 400.

[0065] Since the structure of the first air microstrip line 300 is the same as that of the second air microstrip line 400, in this embodiment, the structure of the first air microstrip line 300 will be described in detail.

[0066] The third vertical section 330 is formed by bending one end of the horizontal section 320 downward by 90°. The end of the third vertical section 330 is connected to the first oscillator lobe 110 through a clamping fixture 810. That is, through the clamping fixture 810, the end of the third vertical section 330 is fixed on the surface of the first vertical section 112 facing the feeding space.

[0067] A fixing hole 321 is provided on the horizontal section 320, and the fixing bottom column of the supporting fixture 800 is inserted into the fixing hole 321. The fixing plug 820 passes through the fixing hole 321 on the horizontal section 320 in the first air microstrip line 300 and through the fixing hole on the horizontal section in the second air microstrip line 400, and is inserted into the jack 802 of the supporting fixture 800.

[0068] That is, through the top of the first air microstrip line 300 and the top of the second air microstrip line 400, the center of the top of the first air microstrip line 300 is connected to the center of the top of the second air microstrip line 400, and the first air microstrip line 300, the second air microstrip line 400, and the supporting fixture 800 are connected.

[0069] The fourth vertical section 340 is formed by bending the other end of the horizontal section 320 downward by 90°. The middle of the fourth vertical section 340 is connected to the second oscillator lobe 120 through a clamping fixture 810. That is, through the clamping fixture 810, the middle of the fourth vertical section 340 is fixed on the surface of the first vertical section of the second oscillator lobe 120 facing the feeding space. The tail of the fourth vertical section 340 passes through the reflector 500 without contacting the reflector 500, and the first feeding point 310 is led out. A fixing groove is provided at the tail of the fourth vertical section 340, and it is convenient to fix the coaxial cable through the fixing groove.

[0070] Among them, the fourth vertical section 340 needs to pass through the reflector 500, and the third vertical section 330 may not pass through the reflector 500, so the length of the fourth vertical section 340 is greater than that of the third vertical section 330; the first air microstrip line 300 and the second air microstrip line are orthogonally arranged with an offset up and down in the feeding space. In order to keep the feeding point exposed on the back of the reflector 500, therefore, one air microstrip line needs to be 2 mm longer than the other air microstrip line.

[0071] The air microstrip line made of sheet metal is easy to be bent. The bent air microstrip lines are arranged orthogonally and vertically offset in the feeding space, providing conditions for the miniaturization of the oscillator as much as possible without affecting signal transmission.

[0072] Refer to Figures 1 to 4 , in some embodiments of the present invention, a dual-polarized broadband oscillator further includes: a coupling sheet 600.

[0073] The bottom of the coupling sheet 600 is connected to the front surface of the reflector 500. The coupling sheet 600 is arranged around the first oscillator lobe 110, the second oscillator lobe 120, the third oscillator lobe 130 and the fourth oscillator lobe 140, and the coupling sheet 600 is located between adjacent oscillator lobes. It can be understood that a microstrip line is set in the feeding space. Taking the center point of the feeding space as the center of a circle, the microstrip line is set in the inner circle and the coupling sheet 600 is set in the outer circle, advancing layer by layer. The coupling sheet 600 plays a role in loading electromagnetic wave signals, which is beneficial to broadening the bandwidth of the low-frequency band, enabling the present oscillator to work stably in the low-frequency band. Through the above-mentioned surrounding structure, it is convenient for signal reception and transmission, and enhances the efficient transmission and conversion between electromagnetic wave signals.

[0074] The coupling sheet 600 includes: a second fixing section 610, a second vertical section 620 and a second frequency broadening section 630.

[0075] The bottom surface of the second fixing section 610 is fixed on the front surface of the reflector 500. The second fixing section 610 is formed by bending 90° inward from the bottom end of the second vertical section 620. The second vertical section 620 is perpendicular to the front surface of the reflector 500. The second frequency broadening section 630 is formed by bending 90° inward from the top end of the second vertical section 620. The value range of the size of the second frequency broadening section 630 is 0.5λ - 2λ.

[0076] Wherein, the included angle between the geometric central axis of the second frequency broadening section 630 and the symmetry axis of the first frequency broadening section 113 of the first oscillator lobe 110 is 45°, so as to make the second frequency broadening section 630 form a 45° angle with the first radiation unit; the included angle between the geometric central axis of the second frequency broadening section 630 and the symmetry axis of the first frequency broadening section of the third oscillator lobe 130 is 45°, so as to make the second frequency broadening section 630 form a 45° angle with the second radiation unit.

[0077] The coupling sheet 600 also uses sheet metal material, meeting the requirement of lightweight of the present oscillator. By arranging layer by layer on the reflector 500, it broadens the bandwidth of the low-frequency band, enhances the efficient transmission and conversion between electromagnetic wave signals, and creates conditions for the requirement of oscillator miniaturization.

[0078] Refer to Figures 1 to 4, in some embodiments of the present invention, a dual-polarized broadband oscillator further includes: a support fixing member 800, a fixing plug-in 820, and a director 700.

[0079] The director 700 is located directly above the feeding space, which can improve the gain in the medium and high usage frequency bands and play a role in broadening the frequency bandwidth, that is, improve the gain in the two usage frequency bands of 1452 MHz - 2700 MHz and 3300 MHz - 4200 MHz, and broaden their frequency bandwidths to obtain a good radiation pattern. Among them, the material of the director 700 is sheet metal.

[0080] The support fixing member 800 is used to connect the director 700, the first air microstrip line 300, the second air microstrip line 400, the first radiation unit, and the second radiation unit. In this embodiment, most of the structures can be quickly assembled only through the support fixing member 800, which provides convenience for the assembly of the oscillator and creates conditions for the miniaturization and light weight of the oscillator.

[0081] The director 700 is provided with an insertion interface, and the fixing top column 801 of the support fixing member 800 passes through the insertion interface and is snap-connected to the director 700, and the top end of the fixing top column 801 is snap-connected to the director 700.

[0082] The support fixing member 800 is provided with fixing members 803 around it, which are respectively fixedly connected to the first frequency band expansion parts on the first oscillator lobe 110, the second oscillator lobe 120, the third oscillator lobe 130, and the fourth oscillator lobe 140 to realize the connection with the top of the first radiation unit and the connection with the top of the second radiation unit. It is convenient to guide the radiation energy of the two groups of radiation units.

[0083] The support fixing member 800 is provided with a jack 802 in the center. The fixing plug-in 820 passes through the fixing hole 321 on the horizontal section 320 of the first air microstrip line 300 and the fixing hole on the horizontal section of the second air microstrip line 400, and is inserted into the jack 802 of the support fixing member 800.

[0084] The bottom of the support fixing member 800 is further provided with fixing bottom columns, and the fixing bottom columns are inserted into the fixing hole 321 on the horizontal section 320 of the first air microstrip line 300 and the fixing hole on the horizontal section of the second air microstrip line 400, so as to fix the first air microstrip line 300 and the second air microstrip line 400 in an orthogonal setting manner. For the characteristics of the sheet metal material, without affecting the performance of the oscillator, the two groups of orthogonally arranged air microstrip lines and the two groups of orthogonally arranged radiation units are fixed to the greatest extent. During the movement, prevent the two groups of air microstrip lines and the two groups of radiation units from moving or deforming, and the included angle between them from changing.

[0085] Refer to Figures 1 to 4, in some embodiments of the present invention, a dual-polarized broadband oscillator further includes: a clamping and fixing member 810 and an isolation and fixing member 520.

[0086] The clamping and fixing member 810 is provided with a clamping member and a fixing port. Clamping ports 200 are provided on the first vertical segments of the first oscillator lobe 110, the second oscillator lobe 120, the third oscillator lobe 130, and the fourth oscillator lobe 140, and the clamping member is clamped with the clamping port 200. The two ends of the first air microstrip line 300 and the two ends of the second air microstrip line 400 are inserted into the fixing port.

[0087] For the first radiation unit, the third vertical segment 330 of the first air microstrip line 300 passes through the fixing port, and the clamping member is clamped with the first vertical segment 112 of the first oscillator lobe 110, realizing the connection between the third vertical segment 330 of the first air microstrip line 300 and the first vertical segment 112 of the first oscillator lobe 110; the fourth vertical segment 340 of the first air microstrip line 300 passes through the fixing port, then passes through the reflector 500, and the clamping member is clamped with the first vertical segment of the second oscillator lobe 120, realizing the connection between the fourth vertical segment 340 of the first air microstrip line 300 and the first vertical segment of the second oscillator lobe 120.

[0088] For the second radiation unit, the third vertical segment of the second air microstrip line 400 passes through the fixing port, and the clamping member is clamped with the first vertical segment of the third oscillator lobe 130, realizing the connection between the third vertical segment of the second air microstrip line 400 and the first vertical segment of the third oscillator lobe 130; the fourth vertical segment of the second air microstrip line 400 passes through the fixing port, then passes through the reflector 500, and the clamping member is clamped with the first vertical segment of the fourth oscillator lobe 140, realizing the connection between the fourth vertical segment of the second air microstrip line 400 and the first vertical segment of the fourth oscillator lobe 140.

[0089] The reflector 500 is provided with a feeding port 510. The isolation and fixing member 520 is clamped on the feeding port 510 and is located on the back of the reflector 500. The fourth vertical segment 340 of the first air microstrip line 300 passes through the fixing port, then passes through the feeding port 510, and is inserted into the isolation and fixing member 520, with its tail exposed. Its tail is connected to the coaxial cable and does not contact the feeding port 510; the fourth vertical segment of the second air microstrip line 400 passes through the fixing port, then passes through the feeding port 510, and is inserted into the isolation and fixing member 520, with its tail exposed. Its tail is connected to the coaxial cable and does not contact the feeding port 510.

[0090] The isolation and fixing member 520 is used to isolate the coaxial cable from the reflector 500. The coaxial cable is not directly electrically connected to the reflector 500 to prevent a short circuit between the reflector 500 and the air microstrip line.

[0091] It should be noted that in the present invention, all the devices for fixing are made of insulating materials, that is, except for the devices for fixing, the rest of the devices are made of sheet metal materials to meet the requirement of weight reduction to the greatest extent.

[0092] Referring to Figure 6 , Figure 6 is the radiation pattern in the H-plane when the dual-polarized broadband oscillator of the present invention operates in the frequency range of 617 MHz - 960 MHz. In the frequency range of 617 MHz - 960 MHz, the lobe width of the oscillator is 70°, and the maximum gain is 8 dBi.

[0093] Referring to Figure 7 , Figure 7 is the radiation pattern in the H-plane when the dual-polarized broadband oscillator of the present invention operates in the frequency range of 1452 MHz - 2700 MHz. In the frequency range of 1452 MHz - 2700 MHz, the lobe width of the oscillator is 65°, and the maximum gain is 9 dBi.

[0094] Referring to Figure 8 , Figure 8 is the radiation pattern in the H-plane when the dual-polarized broadband oscillator of the present invention operates in the frequency range of 3300 MHz - 4200 MHz. In the frequency range of 3300 MHz - 4200 MHz, the lobe width of the oscillator is 60°, and the maximum gain is 10 dBi.

[0095] Referring to Figure 9 , Figure 9 is the test result of the polarization voltage standing wave ratio and isolation of the dual-polarized broadband oscillator of the present invention. The voltage standing wave ratio of the dual-polarized broadband oscillator of the present invention: ≤2.0, isolation: ≥25 dB. As can be seen from Figure 9 , for the dual-polarized broadband oscillator with an all-sheet-metal structure, using ±45° polarization, both the voltage standing wave ratio and isolation have achieved good results.

[0096] According to the embodiments of the second aspect of the present invention, an antenna includes a plurality of dual-polarized broadband oscillators according to the first aspect of the present invention. The plurality of dual-polarized broadband oscillators are arranged in an array to achieve array superposition, thereby improving the gain and obtaining a good radiation pattern to meet the requirements of users in multiple usage scenarios.

[0097] Referring to Figures 10 to 11 , in some embodiments of the present invention, taking the antenna arranged with a dual-oscillator array as an example, the first dual-polarized broadband oscillator 950 and the second dual-polarized broadband oscillator 960 are arranged on the front surface of the reflector in the same straight line, and a feeding network is arranged on the back surface of the reflector.

[0098] The feeding network includes: a first shunt 900, a second shunt 910, a -45° polarization joint 920, and a +45° polarization joint 930. A first connection point 901, a second connection point 902, and a third connection point 903 are arranged on the first shunt 900, and a fourth connection point 911, a fifth connection point 912, and a sixth connection point 913 are arranged on the second shunt 910.

[0099] The first feeding point on the first dual-polarization broadband dipole 950 is electrically connected to the first connection point 901 through a coaxial cable, forming a first path 940; the first feeding point on the second dual-polarization broadband dipole 960 is electrically connected to the second connection point 902 through a coaxial cable, forming a second path 941; the third connection point 903 is electrically connected to the -45° polarization joint 920 through a coaxial cable, forming a third path 942.

[0100] The second feeding point 410 on the first dual-polarization broadband dipole 950 is electrically connected to the fourth connection point 911 through a coaxial cable, forming a fourth path 943; the second feeding point 410 on the second dual-polarization broadband dipole 960 is electrically connected to the fifth connection point 912 through a coaxial cable, forming a fifth path 944; the sixth connection point 913 is electrically connected to the +45° polarization joint 930 through a coaxial cable, forming a sixth path 945.

[0101] When the antenna of the dual-dipole array receives an electromagnetic wave signal, both the first dual-polarization broadband dipole 950 and the second dual-polarization broadband dipole 960 receive the electromagnetic wave signal:

[0102] The first path 940 transmits a first input signal to the first shunt 900, the second path 941 transmits a second input signal to the first shunt 900, the first shunt 900 receives the first input signal and the second input signal, and sends a third input signal to the -45° polarization joint 920 through the third path 942;

[0103] Meanwhile, the fourth path 943 transmits a fourth input signal to the second shunt 910, the fifth path 944 transmits a fifth input signal to the second shunt 910, the second shunt 910 receives the fourth input signal and the fifth input signal, and sends a sixth input signal to the +45° polarization joint 930 through the sixth path 945.

[0104] The -45° polarization joint 920 and the +45° polarization joint 930 can be electrically connected to an external receiving device to process the third input signal and the sixth input signal, so as to obtain the received electromagnetic wave signal.

[0105] When the antenna of the dual-dipole array transmits an electromagnetic wave signal, electromagnetic excitations are fed in through both the -45° polarization joint 920 and the +45° polarization joint 930:

[0106] The -45° polarization connector 920 transmits the first feeding signal to the first splitter 900 through the third path 942. The first splitter 900 receives the first feeding signal, transmits the second feeding signal to the first feeding point 310 of the first dual-polarization broadband oscillator 950 through the first path 940, and transmits the third feeding signal to the first feeding point 310 of the second dual-polarization broadband oscillator 960 through the second path 941;

[0107] Meanwhile, the +45° polarization connector 930 transmits the fourth feeding signal to the second splitter 910 through the sixth path 945. The second splitter 910 receives the fourth feeding signal, transmits the fifth feeding signal to the second feeding point 410 of the first dual-polarization broadband oscillator 950 through the fourth path 943, and transmits the sixth feeding signal to the second feeding point 410 of the second dual-polarization broadband oscillator 960 through the fifth path 944;

[0108] The first dual-polarization broadband oscillator 950 generates a first electromagnetic field through the second feeding signal and the fifth feeding signal. Under the action of the first electromagnetic field, the first radiation unit and the second radiation unit resonate and radiate electromagnetic wave signals outward;

[0109] The second dual-polarization broadband oscillator 960 generates a second electromagnetic field through the third feeding signal and the sixth feeding signal. Under the action of the second electromagnetic field, the first radiation unit and the second radiation unit resonate and radiate electromagnetic wave signals outward. Thus, the transmission of electromagnetic wave signals is achieved.

[0110] At a certain operating frequency, compared with the antenna of a single oscillator, the gain of the antenna formed by the superposition of the dual-oscillator array is increased, from the gain of 4.5 dBi - 7.5 dBi of the single oscillator to the gain of 10 dBi - 13 dBi.

[0111] The above has specifically described the preferred embodiments of the present invention, but the present invention is not limited to the described embodiments. Those skilled in the art can also make various equivalent variations or substitutions without departing from the spirit of the present invention, and these equivalent variations or substitutions are all included within the scope defined by the claims of this application.

Claims

1. A dual-polarized broadband oscillator, characterized in that, Including: a first radiation unit, a second radiation unit, a first air microstrip line, a second air microstrip line, a coaxial cable, and a reflector; The first radiation unit, the second radiation unit, the first air microstrip line, the second air microstrip line, and the reflector are all made of sheet metal. The first radiation unit and the second radiation unit have the same structure. The first radiation unit and the second radiation unit surround a feeding space where the first air microstrip line and the second air microstrip line are orthogonally arranged. The first radiation unit and the second radiation unit are orthogonally arranged on the reflector; The first air microstrip line is connected to the second air microstrip line. The first air microstrip line is connected to the first radiation unit. The second air microstrip line is connected to the second radiation unit. The tail of the first air microstrip line passes through the reflector to lead out a first feeding point. The tail of the second air microstrip line passes through the reflector to lead out a second feeding point. The coaxial cable is respectively connected to the first feeding point and the second feeding point to realize signal input and output.

2. The dual-polarized broadband oscillator according to claim 1, characterized in that The first radiation unit includes: a first oscillator lobe and a second oscillator lobe; The first oscillator lobe and the second oscillator lobe are spaced apart and symmetrically arranged on the reflector. The first oscillator lobe and the second oscillator lobe have the same structure. The first oscillator lobe includes a first fixed section, a first vertical section, and a first frequency broadening section; The first vertical section is perpendicular to the reflector. The first vertical section is connected to the first air microstrip line. The bottom end of the first vertical section is bent outward at 90° to form a first fixed section. The first fixed section is connected to the reflector. The top end of the first vertical section is bent outward at 90° to form a first frequency broadening section. The tail of the first frequency broadening section is bent downward at 90°. The first frequency broadening section is a trapezoidal structure.

3. A dual-polarized broadband oscillator according to claim 1, characterized in that, It also includes: Coupling sheet; The coupling sheet is made of sheet metal. The coupling sheet is connected to the reflector and arranged around the first radiation unit and the second radiation unit. The coupling sheet includes a second fixed section, a second vertical section, and a second frequency broadening section; The bottom end of the second vertical section is bent inward at 90° to form a second fixed section. The second fixed section is connected to the reflector. The top end of the second vertical section is bent inward at 90° to form a second frequency broadening section. The second frequency broadening section is at 45° to the first radiation unit and at 45° to the second radiation unit.

4. A dual-polarized broadband oscillator according to claim 2, characterized in that, It also includes: Support fixture, fixed plug-in, and director; The director is made of sheet metal. The director is clamped with the fixed top post of the support fixture. The fixtures of the support fixture are respectively connected to the top of the first radiation unit and the top of the second radiation unit. The fixed plug-in passes through the tops of the first air microstrip line and the second air microstrip line and is inserted into the jack on the support fixture. The fixed bottom posts of the support fixture are respectively inserted into the first air microstrip line and the second air microstrip line.

5. A dual-polarized broadband oscillator according to claim 4, characterized in that The first air microstrip line includes: a horizontal section, a third vertical section, and a fourth vertical section; One end of the horizontal section is bent downward at 90° to form a third vertical section, the end of the third vertical section is connected to the first oscillator lobe, the other end of the horizontal section is bent downward at 90° to form a fourth vertical section, the fourth vertical section is connected to the second oscillator lobe, the tail of the fourth vertical section passes through the reflector to lead out the first feeding point, a fixing hole is provided on the horizontal section, the fixing hole is inserted with a fixing bottom column, and the fixing plug passes through the fixing hole.

6. The dual-polarized broadband dipole according to claim 5, wherein, It further includes: A clamping and fixing member; Clamping interfaces are provided on both the first oscillator lobe and the second oscillator lobe, the clamping member on the clamping and fixing member is clamped with the clamping interface, the end of the third vertical section of the first air microstrip line passes through the fixing opening on the clamping and fixing member and is connected to the first oscillator lobe, and the fourth vertical section of the first air microstrip line passes through the fixing opening on the clamping and fixing member and is connected to the second oscillator lobe.

7. A dual-polarized broadband dipole according to claim 1, characterized in that, It further includes: An isolation and fixing member; A feeding port is provided on the reflector, the isolation and fixing member is arranged on the back of the reflector and on the feeding port, the tails of the first air microstrip line and the second air microstrip line both pass through the feeding port and are clamped with the isolation and fixing member, and the tails of the first air microstrip line and the second air microstrip line do not contact the feeding port.

8. A dual-polarized broadband oscillator according to claim 2, characterized in that, The value range of the upper bottom dimension of the first frequency expansion band is 0.04λ to 0.1λ, and the value range of the lower bottom dimension of the first frequency expansion band is 0.08λ to 0.14λ, where λ is the wavelength of the low-frequency frequency.

9. The dual-polarized broadband oscillator according to claim 3, characterized in that, The value range of the dimension of the second frequency expansion band is 0.5λ to 2λ, where λ is the wavelength of the low-frequency frequency.

10. An antenna, characterized in that, It includes a plurality of dual-polarization broadband oscillators according to any one of claims 1 to 9, and a plurality of dual-polarization broadband oscillators are arranged in an array.

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