Dual-frequency laminated variable polarization antenna unit and dual-frequency laminated variable polarization antenna

Abstract

The utility model relates to the field of radio propagation, in particular to a dual-frequency laminated variable polarization antenna unit and a dual-frequency laminated variable polarization antenna, which comprise a parasitic radiation patch, a main radiation patch, an isolation hole and a plurality of signal transmission components, the signal transmission assembly comprises a bottom layer transmission line, a feed inner core, a feed line and a feed gap. And the upper ground wire and the lower ground wire of the feeder line are electrically connected through the conductive structure in the isolation hole. According to the utility model, the isolation hole is directly arranged on the antenna, and the upper ground wire and the lower ground wire of the feeder line are electrically connected by using the isolation hole, so that the isolation hole destroys the resonant cavity and divides the resonant cavity into two spaces which are not interfered with each other, thereby greatly improving the isolation degree between the signal transmission assemblies at the two sides of the isolation hole; and the performance of the antenna is improved.

Description

Technical Field

[0001] The utility model relates to the field of radio propagation, in particular to a dual-frequency stacked variable polarization antenna unit and a dual-frequency stacked variable polarization antenna. Background Art

[0002] At present, with the rapid development of satellite communication technology, the requirements for antennas in satellite communication are getting higher and higher, among which the requirements for circular polarization, broadband, low cost, easy processing and switchable left and right hand circular polarization are also getting higher and more stringent.

[0003] Poor isolation between different polarization ports of a circular polarization antenna will lead to problems such as enhanced coupling between the two polarizations, deteriorated axial ratio, and reduced gain. This problem is particularly obvious in the Ka (K-above) band dual-frequency variable polarization antenna. For example, the isolation between ports of most Ka band dual-frequency variable polarization satellite communication phased array antennas on the market is > -15 dB or even worse, which greatly affects the signal transmission quality.

[0004] Therefore, how to solve the problems of poor isolation of the dual-frequency stacked variable polarization antenna unit in the prior art, as well as complex isolation process and high production difficulty, is an urgent problem to be solved by those skilled in the art. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a dual-frequency stacked variable polarization antenna unit and a dual-frequency stacked variable polarization antenna to solve the problems of poor isolation of the dual-frequency stacked variable polarization antenna unit in the prior art, as well as complex isolation process and high production difficulty.

[0006] To solve the above technical problems, the utility model provides a dual-frequency stacked variable polarization antenna unit, which includes a parasitic radiation patch, a main radiation patch, isolation holes and a plurality of signal transmission components;

[0007] The main radiation patch and the parasitic radiation patch are sequentially arranged above the signal transmission components;

[0008] The signal transmission components include a bottom layer transmission line, a feeding inner core, a feeder line, and a feeding slot;

[0009] The output signal of the radio frequency chip sequentially passes through the bottom layer transmission line of the corresponding signal transmission component, the feeding inner core to reach the feeder line, the feeder line is coupled with the feeding slot, and the feeding slot is coupled with the main radiation patch and the parasitic radiation patch;

[0010] Through the conductive structure in the isolation hole, the upper ground wire and the lower ground wire of the feeder line are electrically connected.

[0011] Optionally, in the dual-frequency stacked variable polarization antenna unit, the signal transmission components include a vertical signal transmission component and a horizontal signal transmission component;

[0012] The vertical signal transmission component is connected to the vertical polarization output end of the RF chip, and the horizontal signal transmission component is connected to the horizontal polarization output end of the RF chip.

[0013] Optionally, in the dual-band stacked variable polarization antenna unit, both the component floor and the antenna floor of the dual-band stacked variable polarization antenna unit include ground clearance vias, the feeding inner core passes through the ground clearance vias and does not contact the edges of the ground clearance vias.

[0014] Optionally, in the dual-band stacked variable polarization antenna unit, a polarization outer hole is further included;

[0015] The polarization outer hole penetrates from the lower ground wire of the bottom layer transmission line to the feeding slot;

[0016] A plurality of the polarization outer holes are arranged around the feeding inner core.

[0017] Optionally, in the dual-band stacked variable polarization antenna unit, the isolation hole is an isolation through hole;

[0018] The conductive structure in the isolation through hole electrically connects the ground wire of the bottom layer transmission line to the parasitic radiation patch.

[0019] Optionally, in the dual-band stacked variable polarization antenna unit, the isolation hole is opened at the zero potential point of the parasitic radiation patch and / or the main radiation patch.

[0020] Optionally, in the dual-band stacked variable polarization antenna unit, the isolation hole is an isolation buried hole;

[0021] Both ends of the isolation buried hole expose the upper ground wire and the lower ground wire of the feeder line respectively.

[0022] Optionally, in the dual-band stacked variable polarization antenna unit, the conductive structure in the isolation hole is a metal inner wall layer.

[0023] Optionally, in the dual-band stacked variable polarization antenna unit, a coplanar waveguide ground hole is further included;

[0024] The coplanar waveguide ground hole connects the upper ground wire and the lower ground wire of the bottom layer transmission line through the internal conductive structure.

[0025] Optionally, in the dual-band stacked variable polarization antenna unit, the dual-band stacked variable polarization antenna unit is a Ka-band dual-band stacked variable polarization antenna unit.

[0026] A dual - frequency stacked variable - polarization antenna, the dual - frequency stacked variable - polarization antenna comprising a plurality of dual - frequency stacked variable - polarization antenna units arranged in an array on the same substrate group as any one of the above - mentioned.

[0027] Optionally, in the dual - frequency stacked variable - polarization antenna, a plurality of isolation vias are provided between adjacent dual - frequency stacked variable - polarization antenna units;

[0028] The isolation vias penetrate from the top layer of the dual - frequency stacked variable - polarization antenna unit to the antenna floor of the dual - frequency stacked variable - polarization antenna unit;

[0029] A conductive shielding member is provided in the isolation vias, an isolation conductive skin layer is provided on the top layer of the dual - frequency stacked variable - polarization antenna unit, and the conductive shielding member is electrically connected to the isolation conductive skin layer.

[0030] The dual - frequency stacked variable - polarization antenna unit provided by the present utility model includes a parasitic radiation patch, a main radiation patch, an isolation hole, and a plurality of signal transmission components; the main radiation patch and the parasitic radiation patch are sequentially arranged above the signal transmission components; the signal transmission components include a bottom - layer transmission line, a feeding inner core, a feeder, and a feeding slot; the output signal of the radio - frequency chip sequentially passes through the bottom - layer transmission line of the corresponding signal transmission component, the feeding inner core to reach the feeder, the feeder is coupled with the feeding slot, and the feeding slot is coupled with the main radiation patch and the parasitic radiation patch; through the conductive structure in the isolation hole, the upper ground wire and the lower ground wire of the feeder are electrically connected.

[0031] The present utility model directly opens an isolation hole on the antenna and uses the isolation hole to electrically connect the upper ground wire and the lower ground wire of the feeder, so that the isolation hole destroys the resonant cavity and divides the resonant cavity into two non - interfering spaces. Therefore, the isolation degree between the signal transmission components on both sides of the isolation hole is greatly improved, and thus the performance of the antenna is improved. The present utility model also provides a dual - frequency stacked variable - polarization antenna having the above - mentioned beneficial effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0033] Figure 1 It is a schematic structural diagram of a specific embodiment of the dual - frequency stacked variable - polarization antenna unit provided by the present utility model;

[0034] Figure 2Partial schematic diagram of a specific embodiment of the dual - frequency stacked variable - polarization antenna unit provided by the present utility model;

[0035] Figure 3 Partial schematic diagram of a specific embodiment of the dual - frequency stacked variable - polarization antenna unit provided by the present utility model;

[0036] Figure 4 Cross - sectional schematic diagram of a specific embodiment of the dual - frequency stacked variable - polarization antenna unit provided by the present utility model;

[0037] Figure 5 Structural schematic diagram of a specific embodiment of the dual - frequency stacked variable - polarization antenna provided by the present utility model;

[0038] Figure 6 Cross - sectional view of a specific embodiment of the dual - frequency stacked variable - polarization antenna unit provided by the present utility model;

[0039] Figure 7 Three - dimensional structural perspective view of a specific embodiment of the dual - frequency stacked variable - polarization antenna unit provided by the present utility model;

[0040] Figure 8 Curve graph showing the variation of the reflection coefficient with frequency of a specific embodiment of the dual - frequency stacked variable - polarization antenna unit provided by the present utility model;

[0041] Figure 9 Curve graph showing the variation of the isolation with frequency of a specific embodiment of the dual - frequency stacked variable - polarization antenna unit provided by the present utility model;

[0042] Figure 10 EH - plane radiation pattern of a specific embodiment of the dual - frequency stacked variable - polarization antenna unit provided by the present utility model.

[0043] In the figure, it includes 01 - the first antenna dielectric, 02 - the second antenna dielectric, 03 - the third antenna dielectric, 04 - the fourth antenna dielectric, 05 - the first component dielectric, 06 - the second component dielectric, 07 - the antenna floor, 08 - the component floor, 09 - the ground - retreating through - hole, 10 - the parasitic radiation patch, 20 - the main radiation patch, 30 - the isolation hole, 31 - the metal inner wall layer, 41 - the bottom - layer transmission line, 42 - the feeding inner core, 43 - the feeder, 43A - the upper ground wire of the feeder, 43B - the lower ground wire of the feeder, 44 - the feeding slot, 45 - the polarization outer hole, 46 - the coplanar waveguide grounding hole, 100 - the dual - frequency stacked variable - polarization antenna unit, 200 - the isolation via - hole, 210 - the isolation conductive skin layer, 220 - the conductive shielding member. Specific embodiment

[0044] To enable those skilled in the art to better understand the solution of the present utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the scope of protection of the present utility model.

[0045] The core of the present utility model is to provide a dual-frequency stacked variable polarization antenna unit. A schematic structural diagram of a specific embodiment thereof is as Figure 1 shown, which is called the first specific embodiment, and includes a parasitic radiation patch 10, a main radiation patch 20, an isolation hole 30, and a plurality of signal transmission components;

[0046] The main radiation patch 20 and the parasitic radiation patch 10 are sequentially arranged above the signal transmission components;

[0047] The signal transmission components include a bottom layer transmission line 41, a feeding inner core 42, a feeder line 43, and a feeding slot 44;

[0048] The output signal of the radio frequency chip sequentially passes through the bottom layer transmission line 41 of the corresponding signal transmission component, the feeding inner core 42 to reach the feeder line 43. The feeder line 43 is coupled with the feeding slot 44, and the feeding slot 44 is coupled with the main radiation patch 20 and the parasitic radiation patch 10;

[0049] Through the conductive structure in the isolation hole 30, the upper ground wire 43A and the lower ground wire 43B of the feeder line 43 are electrically connected.

[0050] In the present utility model, the upper ground wire 43A and the lower ground wire 43B of the feeder line 43, in cooperation with the isolation measures of the antenna unit (such as the isolation via 200 in the following text), enclose a resonant cavity. The isolation chamber mentioned in the following text refers to the resonant cavity enclosed by the isolation measures.

[0051] The zero potential point of the parasitic radiation patch 10 is usually the central position of the parasitic radiation patch 10. It should be noted that the dual-frequency stacked variable polarization antenna unit is an antenna unit with isolation measures. For example, the feeding line layer of the dual-frequency stacked variable polarization antenna unit is first enclosed into an isolation chamber by using the isolation via 200 in the following text, and then the resonant cavity (i.e., the isolation chamber) is damaged by using the isolation hole 30 of the present utility model, and the resonant cavity is divided into multiple non-interfering spaces, so that the feeder lines 43 arranged at different spatial positions do not interfere with each other.

[0052] The upper ground wire 43A and the lower ground wire 43B of the feeder 43 are respectively arranged above and below the feeder 43. In this specific embodiment, the upper ground wire 43A of the feeder 43 is the feeding slot 44, and the lower ground wire 43B of the feeder 43 is the antenna floor 07. The feeding slot 44 and the antenna floor 07 perform the functions of the upper ground wire 43A and the lower ground wire 43B. Of course, the upper ground wire 43A and the lower ground wire 43B can also be set as independent structures according to actual situations, and the present invention does not limit this here, and reference can be made to Figure 3 , Figure 3 is a partial enlarged schematic diagram of the dual-frequency stacked variable polarization antenna unit. As can be seen from the figure, the conductive structures (the metal inner wall layer 31 in the figure) in the isolation hole 30 are respectively in contact with the upper ground wire 43A and the lower ground wire 43B of the feeder 43 to realize the electrical connection between the two. Of course, the electrical connection can also be realized through other structures. The present invention does not limit the electrical connection between the 43A and the lower ground wire 43B of the feeder 43.

[0053] As a specific embodiment, this structure is composed of a first antenna medium 01, a second antenna medium 02, a third antenna medium 03, a fourth antenna medium 04, a first component medium 05, and a second component medium 06 from top to bottom. The parasitic radiation patch 10 is located above the first antenna medium 01, the main radiation patch 20 is located above the second antenna medium 02, the antenna feeding slot 44 is located above the third antenna medium 03, the antenna feeder 43 is located above the fourth antenna medium 04, and the antenna floor 07 is located below the fourth antenna medium 04. The component floor 08 is located above the second component medium 06, and the bottom layer transmission line 41 is located below the second component medium 06.

[0054] The first antenna medium 01, the second antenna medium 02, the third antenna medium 03, and the fourth antenna medium 04 are the media required for the antenna part and are a four-layer dielectric substrate structure. The first component medium 05 is the medium required for the TR part, and it can contain multiple layers of boards, including but not limited to radio frequency power distribution networks, power traces, wave control traces, etc. The second component medium 06 is the medium required for the bottom layer transmission line 41.

[0055] In the present invention, the antenna part is a four-layer dielectric substrate structure, with a simple structure form, easy processing, no blind buried holes, reducing the processing difficulty and cost.

[0056] Preferably, the isolation hole 30 is opened at the zero potential point of the parasitic radiation patch 10;

[0057] The conductive structure in the isolation hole 30 electrically connects the ground wire of the bottom layer transmission line 41 and the parasitic radiation patch 10.

[0058] By means of the preferred embodiment, the upper ground wire 43A and the lower ground wire 43B of the feeder 43 can be electrically connected quickly and conveniently with a simple process, without affecting the transmission performance of the antenna, which can greatly improve the production speed and product yield of the antenna.

[0059] As a specific embodiment, the signal transmission component includes a vertical signal transmission component and a horizontal signal transmission component;

[0060] The vertical signal transmission component is connected to the vertical polarization output end of the radio frequency chip, and the horizontal signal transmission component is connected to the horizontal polarization output end of the radio frequency chip.

[0061] In this specific embodiment, when the energy of the vertical polarization end and the horizontal polarization end of the radio frequency chip is transmitted from their respective underlying transmission lines 41, through the corresponding feeding inner cores 42 to the corresponding feeders 43, and then the energy is coupled to the radiation patch through the feeding slots 44, two mutually perpendicular linearly polarized waves are respectively excited. At this time, by adjusting the amplitudes of the two signals to be equal and the phase difference to be 90° through the radio frequency chip, the antenna can operate in a circular polarization state. Adjusting the sequence of the phase difference can change its left- or right-hand circular polarization, realizing polarization switchability. It is also possible to feed only one of the ports to make it operate in a linear polarization state. The dual-frequency stacked variable polarization antenna unit has good gain and cross-polarization characteristics.

[0062] For example, the vertical polarization underlying transmission line 41 of the vertical signal transmission component and the horizontal polarization underlying transmission line 41 of the horizontal signal transmission component are respectively connected to two ports of the radio frequency chip and their respective feeding inner cores 42, that is, the vertical polarization inner core and the horizontal polarization inner core. The feeding inner core 42 is directly connected to its respective feeder 43, and the feeder 43 forms a coupled feed to the antenna radiation patch through its respective feeding slot 44. The main radiation patch 20 is the main radiation unit, and the parasitic radiation patch 10 is the parasitic radiation unit. The vertical polarization feeder 43 of the vertical signal transmission component in the antenna is a bent copper strip conductor, and a rectangular matching stub is added in the middle to achieve impedance matching. The vertical polarization slot of the vertical signal transmission component of the antenna is a slot similar to a door shape, with a smaller upper part and a larger lower part, and the right bottom is chamfered. The horizontal polarization feeder 43 of the horizontal signal transmission component of the antenna is a bent copper strip conductor, and a rectangular matching stub is added in the middle to achieve impedance matching. The horizontal polarization slot of the horizontal signal transmission component of the antenna is an H-shaped slot. When appropriately adjusting various parameters such as the feeder 43, the slot, the antenna patch, and the thickness of the antenna dielectric board, the entire antenna can be well matched, meeting the required working bandwidth, and the various indicators of the radiation pattern can also meet the requirements.

[0063] As a preferred embodiment, the isolation hole 30 is an isolation through-hole;

[0064] The conductive structure within the isolation through-hole electrically connects the ground wire of the underlying transmission line 41 to the parasitic radiation patch 10.

[0065] In this preferred embodiment, defining the isolation hole 30 as an isolation through-hole eliminates the need for blind buried holes. After the various layers in the entire antenna unit are set up, the isolation through-hole can be opened, greatly simplifying the process flow and reducing the processing difficulty and cost.

[0066] Furthermore, the isolation hole 30 is opened at the zero potential point of the parasitic radiation patch 10 and / or the main radiation patch 20.

[0067] Placing the isolation through-hole at the zero potential point of the main radiation patch 20, that is, electrically connecting the conductive structure within the isolation hole 30 to the zero potential point of the main radiation patch 20, thus does not affect the normal operation of the main radiation patch 20, avoids affecting the radiation performance of the antenna, and improves the working stability of the antenna. Similarly, it is also possible to preferably have the isolation through-hole pass through the zero potential point of the parasitic radiation patch 10, which can also achieve the effect of improving the working stability of the antenna.

[0068] In addition, the isolation hole 30 is an isolation buried hole;

[0069] Both ends of the isolation buried hole expose the upper ground wire 43A and the lower ground wire 43B of the feeder 43.

[0070] Defining the isolation hole 30 as an isolation buried hole. Reference can be made to Figure 3 , Figure 3 which is the case where the isolation hole 30 is an isolation buried hole. Furthermore, both the component floor 08 and the antenna floor 07 of the dual-band stacked variable polarization antenna unit include ground clearance through-holes 09. The feed inner core 42 passes through the ground clearance through-holes 09 and does not contact the edges of the ground clearance through-holes 09. Please refer to Figure 2 , Figure 2 is Figure 1 a partial enlarged view. The ground clearance through-holes 09 are circled in the figure with a dashed line. The above two figures clearly show the structure of the dual-band stacked variable polarization antenna unit.

[0071] Performing a hole-drilling operation on the component floor 08 and the antenna floor 07 to obtain the corresponding ground clearance through-holes 09. The ground clearance through-holes 09 ensure that when the feed inner core 42 passes through the component floor 08 and the antenna floor 07, it does not contact either of them, preventing signal short-circuiting and improving the working stability of the antenna.

[0072] As a preferred embodiment, it further includes a polarization outer hole 45;

[0073] The polarization outer hole 45 penetrates from the lower ground wire of the underlying transmission line 41 to the feeding slot 44;

[0074] A plurality of the polarization outer holes 45 are arranged around the feeding inner core 42.

[0075] Please refer to Figure 4 , Figure 4 For Figure 1 the cross-sectional schematic diagram at the AA' position, a plurality of the polarization outer holes 45 are arranged in an arc shape, semi-surrounding the corresponding feeding inner core 42, which plays a role in restricting signal transmission, reducing transmission loss, and at the same time can also achieve an isolation effect, avoiding mutual interference between different feeding inner cores 42, and further improving the isolation degree between different signal transmission components. The dielectric layer corresponding to the underlying transmission line 41 can be considered as the second component dielectric 06.

[0076] In addition, the dual-frequency stacked variable polarization antenna unit is an antenna on a PCB substrate. In other words, the first antenna dielectric 01, the second antenna dielectric 02, the third antenna dielectric 03, the fourth antenna dielectric 04, the first component dielectric 05, and the second component dielectric 06 described above are all PCB (Printed Circuit Board) substrates. In the dual-frequency stacked variable polarization antenna unit of the present invention, the antenna and the TR (Transmitter and Receiver) component are integrally designed, and most of the antenna layers are laminated separately. Through holes can be set during the separate lamination process, which can greatly simplify the process. Based on the principle of low cost, low-cost PCB materials are selected, and the design takes into account the chip pin positions, the TR component traces, the process processing difficulty and limitations, reduces buried vias and does not use blind vias while ensuring the antenna performance, and integrates the underlying transmission line with the TR component through vertical transition inside the board, which is easy to process and has low cost. Specifically, the conductive structure in the isolation hole 30 is a metal inner wall layer 31. In other words, the metal inner wall layer 31 is provided on the side wall of the isolation hole 30, and the metal inner wall layer 31 vertically connects the top surface and the bottom surface of the isolation hole 30. Using the metal inner wall layer 31 as the conductive structure in the isolation hole 30 can greatly simplify the manufacturing process and reduce the material cost at the same time. Of course, other forms of conductive structures can also be used, such as depositing metal columns in the isolation hole 30, which is not limited in the present invention.

[0077] In addition, the dual-frequency stacked variable polarization antenna unit further includes a coplanar waveguide ground hole 46;

[0078] The coplanar waveguide ground hole 46 connects the upper ground wire and the lower ground wire of the underlying transmission line 41 through an internal conductive structure.

[0079] For Figure 1For example, the upper ground wire and the lower ground wire of the underlying transmission line 41 are respectively located on two surfaces of the second component medium 06. Among them, the ground wire on the same layer as the underlying transmission line is the upper ground wire. Therefore, Figure 1 the upper ground wire described therein is located on the layer where the underlying transmission line 41 is located, while the corresponding lower ground wire is located on the surface of the second component medium 06 away from the underlying transmission line 41. Near the component floor 08 in the figure, the coplanar waveguide ground hole 46 can confine the signal in the underlying transmission line 41, reduce signal loss, and thus improve the antenna performance.

[0080] Preferably, the dual-band stacked variable polarization antenna unit is a Ka-band dual-band stacked variable polarization antenna unit. This specific embodiment further broadens the application scenarios of the present invention. Please refer to Figure 6 Figure 7 , Figure 6 Figure 10 shows a cross-sectional view of the Ka-band dual-band stacked variable polarization antenna corresponding to the first specific embodiment; Figure 7 Figure 11 is a three-dimensional structure perspective view corresponding thereto. The above two figures clearly show the structure of the Ka-band dual-band stacked variable polarization antenna.

[0081] Figure 8 Figure 16 shows a curve of the reflection coefficient of the Ka-band dual-band stacked variable polarization antenna corresponding to the first specific embodiment changing with frequency, Figure 9 Figure 18 shows a curve of the isolation of the Ka-band dual-band stacked variable polarization antenna corresponding to the first specific embodiment changing with frequency. It can be seen that the Ka-band dual-band stacked variable polarization antenna has a high isolation and a low reflection coefficient in the target frequency band.

[0082] Figure 10 Figure 22 shows the EH-plane radiation pattern of the Ka-band dual-band stacked variable polarization antenna unit, where the E-plane is the electric plane and the H-plane is the magnetic plane, demonstrating that the Ka-band dual-band stacked variable polarization antenna has good gain and cross-polarization characteristics.

[0083] The dual - frequency stacked variable - polarization antenna unit provided by the present utility model includes a parasitic radiation patch 10, a main radiation patch 20, isolation holes 30, and multiple signal transmission components; the main radiation patch 20 and the parasitic radiation patch 10 are sequentially arranged above the signal transmission components; the signal transmission components include a bottom - layer transmission line 41, a feeding inner core 42, a feeder 43, and a feeding slot 44; the output signal of the RF chip sequentially passes through the bottom - layer transmission line 41 of the corresponding signal transmission component, the feeding inner core 42 to reach the feeder 43, the feeder 43 is coupled with the feeding slot 44, and the feeding slot 44 is coupled with the main radiation patch 20 and the parasitic radiation patch 10; through the conductive structure in the isolation hole 30, the upper ground wire 43A and the lower ground wire 43B of the feeder 43 are electrically connected. The present utility model directly opens the isolation hole 30 on the antenna, electrically connects the upper ground wire 43A and the lower ground wire 43B of the feeder 43, and uses the isolation hole 30 to destroy the resonant cavity, that is, divides the resonant cavity into multiple independent and non - interfering spaces. Therefore, the isolation degree between the signal transmission components on both sides of the isolation hole 30 is greatly improved, and thus the performance of the antenna is improved.

[0084] The present utility model also provides a dual - frequency stacked variable - polarization antenna. The structural schematic diagram of a specific embodiment is as Figure 5 shown, which is called the second specific embodiment. The dual - frequency stacked variable - polarization antenna includes multiple dual - frequency stacked variable - polarization antenna units as described in any one of the above - mentioned arranged in an array on the same substrate group.

[0085] Multiple of the above - mentioned dual - frequency stacked variable - polarization antenna units can be arranged in an array on the same PCB substrate to obtain the dual - frequency stacked variable - polarization antenna. For specific technical details, please refer to the previous text, and the present utility model will not elaborate here.

[0086] As a preferred embodiment, multiple isolation vias 200 are provided between adjacent dual - frequency stacked variable - polarization antenna units;

[0087] The isolation vias 200 penetrate from the top layer of the dual - frequency stacked variable - polarization antenna unit to the antenna floor 07 of the dual - frequency stacked variable - polarization antenna unit;

[0088] A conductive shielding member 220 is arranged in the isolation vias 200, and an isolation conductive skin layer 210 is arranged on the top layer of the dual - frequency stacked variable - polarization antenna unit. The conductive shielding member 220 is electrically connected to the isolation conductive skin layer 210.

[0089] Please see Figure 5 , Figure 5By arranging a plurality of the isolation vias 200 between adjacent dual-frequency stacked variable polarization antenna elements, and using the conductive shielding member 220 in the isolation via 200 as an electromagnetic barrier, the electromagnetic interference between different dual-frequency stacked variable polarization antenna elements 100 (i.e., the dual-frequency stacked variable polarization antenna elements) is blocked, the mutual coupling between the dual-frequency stacked variable polarization antenna elements 100 is reduced, and the improvement of the antenna performance is achieved.

[0090] The isolation conductive skin layer 210 can be a copper skin. The copper skin has good electrical conductivity, can achieve a better shielding effect, and at the same time has good ductility and plasticity, can cooperate with isolation vias 200 of different shapes and arrangements, and makes the production process simpler.

[0091] The dual-frequency stacked variable polarization antenna provided by the present invention includes a plurality of dual-frequency stacked variable polarization antenna elements as described in any one of the above, which are arranged in an array on the same substrate group. In the present invention, an isolation hole 30 is directly opened on the antenna, and the ground potential point on the parasitic radiation patch 10 is electrically connected to the ground wire of the bottom layer transmission line 41 through the isolation hole 30. Since the ground potential point on the parasitic radiation patch 10 is connected to the ground wire, it will not affect the radiation performance of the antenna. At the same time, the isolation hole 30 is used to destroy the resonant cavity, that is, the resonant cavity is divided into a plurality of independent and non-interfering spaces, so the isolation degree between the signal transmission components on both sides of the isolation hole 30 is greatly improved, and thus the performance of the antenna is improved.

[0092] In this specification, the various embodiments are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the description of the method part.

[0093] It should be noted that in this specification, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variation thereof is intended to cover a non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising a..." does not exclude the existence of additional identical elements in the process, method, article or device including the element.

[0094] The above has introduced in detail the dual-frequency stacked variable polarization antenna element and the dual-frequency stacked variable polarization antenna provided by the present utility model. Specific examples are used in this article to elaborate on the principle and implementation manner of the present utility model. The description of the above embodiments is only used to help understand the method and its core idea of the present utility model. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present utility model, several improvements and modifications can be made to the present utility model, and these improvements and modifications also fall within the protection scope of the claims of the present utility model.

Claims

1. A dual - frequency stacked variable - polarization antenna element, characterized in that, It includes a parasitic radiation patch (10), a main radiation patch (20), isolation holes (30) and a plurality of signal transmission components; The main radiation patch (20) and the parasitic radiation patch (10) are sequentially arranged above the signal transmission components; The signal transmission components include a bottom layer transmission line (41), a feeding inner core (42), a feeder line (43), and a feeding slit (44); The output signal of the RF chip sequentially passes through the bottom layer transmission line (41) of the corresponding signal transmission component, the feeding inner core (42) to reach the feeder line (43), the feeder line (43) is coupled with the feeding slit (44), and the feeding slit (44) is coupled with the main radiation patch (20) and the parasitic radiation patch (10); Through the conductive structure in the isolation hole (30), the upper ground wire and the lower ground wire of the feeder line (43) are electrically connected.

2. The dual-frequency stacked variable polarization antenna element according to claim 1, wherein The signal transmission components include a vertical signal transmission component and a horizontal signal transmission component; The vertical signal transmission component is connected to the vertical polarization output end of the RF chip, and the horizontal signal transmission component is connected to the horizontal polarization output end of the RF chip.

3. The dual-band stacked variable polarization antenna element according to claim 1, wherein Both the component floor (08) and the antenna floor (07) of the dual-frequency stacked variable polarization antenna unit include ground clearance vias (09), and the feeding inner core (42) passes through the ground clearance vias (09) without contacting the edges of the ground clearance vias (09).

4. The dual-band stacked variable polarization antenna element according to claim 1, characterized in that It further includes a polarization outer hole (45); The polarization outer hole (45) penetrates from the lower ground wire of the bottom layer transmission line (41) to the feeding slit (44); A plurality of the polarization outer holes (45) are arranged around the feeding inner core (42).

5. The dual-frequency stacked variable polarization antenna element according to claim 1, characterized in that, The isolation hole (30) is an isolation through hole; The conductive structure in the isolation through hole electrically connects the ground wire of the bottom layer transmission line (41) to the parasitic radiation patch (10).

6. The dual-band stacked variable polarization antenna element according to claim 1, characterized in that, The isolation hole (30) is opened at the zero potential point of the parasitic radiation patch (10) and / or the main radiation patch (20).

7. The dual-frequency stacked variable polarization antenna unit according to claim 1, characterized in that, The isolation hole (30) is an isolation buried hole; Both ends of the isolation buried hole expose the upper ground wire and the lower ground wire of the feeder line (43).

8. The dual-band stacked variable polarization antenna element according to claim 1, characterized in that, The conductive structure in the isolation hole (30) is a metal inner wall layer.

9. The dual-frequency stacked variable polarization antenna element according to claim 1, characterized in that It further includes a coplanar waveguide ground hole (46); The coplanar waveguide ground hole (46) connects the upper ground wire and the lower ground wire of the bottom layer transmission line (41) through the internal conductive structure.

10. The dual-frequency stacked variable polarization antenna element according to any one of claims 1 to 9, characterized in that, The dual-frequency stacked variable polarization antenna unit is a Ka-band dual-frequency stacked variable polarization antenna unit.

11. A dual-band stacked variable polarization antenna, characterized in that, The dual-frequency stacked variable polarization antenna includes a plurality of dual-frequency stacked variable polarization antenna units as described in any one of claims 1 to 10 arranged in an array on the same substrate group.

12. The dual-band stacked variable polarization antenna according to claim 11, wherein A plurality of isolation vias (200) are provided between adjacent dual-frequency stacked variable polarization antenna units; The isolation vias (200) penetrate from the top layer of the dual-frequency stacked variable polarization antenna unit to the antenna floor (07) of the dual-frequency stacked variable polarization antenna unit; A conductive shielding member (220) is disposed within the isolation via (200). An isolation conductive skin layer (210) is provided on the top layer of the dual-band stacked variable polarization antenna element. The conductive shielding member (220) is electrically connected to the isolation conductive skin layer (210).

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