CN118073844A - Antenna array subunit, antenna radiation unit and antenna array - Google Patents
Antenna array subunit, antenna radiation unit and antenna array Download PDFInfo
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- CN118073844A CN118073844A CN202211479991.7A CN202211479991A CN118073844A CN 118073844 A CN118073844 A CN 118073844A CN 202211479991 A CN202211479991 A CN 202211479991A CN 118073844 A CN118073844 A CN 118073844A
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- 230000005855 radiation Effects 0.000 title claims description 11
- 239000002184 metal Substances 0.000 claims description 90
- 229910052751 metal Inorganic materials 0.000 claims description 90
- 230000000712 assembly Effects 0.000 claims description 6
- 238000000429 assembly Methods 0.000 claims description 6
- 230000008878 coupling Effects 0.000 abstract description 16
- 238000010168 coupling process Methods 0.000 abstract description 16
- 238000005859 coupling reaction Methods 0.000 abstract description 16
- 230000002401 inhibitory effect Effects 0.000 abstract description 9
- 238000010586 diagram Methods 0.000 description 11
- 238000000034 method Methods 0.000 description 8
- 239000003990 capacitor Substances 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000010295 mobile communication Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 230000001629 suppression Effects 0.000 description 2
- 238000003491 array Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
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- 230000006866 deterioration Effects 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 238000005290 field theory Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 230000010365 information processing Effects 0.000 description 1
- 230000005404 monopole Effects 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
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Abstract
The embodiment of the application discloses an antenna array subunit, an antenna radiating unit and an antenna array, which realize the purpose of inhibiting low-frequency common-mode induced current so as to solve the problem of common-mode coupling between high-frequency and low-frequency antennas. The antenna array subunit comprises a radiator, a balun short-circuit double wire and a resonance component, wherein: the radiator is connected with the balun short-circuit double-wire circuit; the resonance component is embedded into the balun short-circuit double wire to form at least one first-order resonance circuit with low-frequency stop band and high-frequency pass band characteristics, and each-order resonance circuit comprises an equivalent capacitance structure and an equivalent inductance structure.
Description
Technical Field
The present application relates to the field of communications, and in particular, to an antenna array subunit, an antenna radiating unit, and an antenna array.
Background
A base station antenna is an intermediate component of the transmitted and received signals, acting as a converter capable of interconverting the guided wave propagating on-line and the spatially radiated electromagnetic wave. The development of base station antennas can accelerate a large amount of information processing capability in an environment where the amount of mobile communication information increases. With the advent of the 5G age, traditional antennas began to be replaced by high-end, high-tech base station antennas, and more new technologies would be applied to the base station antennas. The 5G base station antenna can adopt a multi-frequency multi-column antenna array, the antenna array is formed by feeding and spatial arrangement according to certain requirements by two or more antenna radiating units, and the multi-frequency multi-column antenna array structure is shown in figure 1. In order to reduce the construction and lease costs, the multi-frequency common-caliber antenna becomes a main solution of the macro base station. The development of a multi-frequency common-aperture antenna faces many challenges, in which common-mode coupling between high and low frequency antennas is a core difficulty, and as shown in fig. 2, the sub-array is composed of one low frequency antenna array 201 and four high frequency antenna arrays 202, and there is a common-mode coupling problem between the high and low frequency antennas.
In the prior art, there are two schemes to suppress common mode resonance between high and low frequency antennas.
1) The design of the common-mode low-resistance filter circuit is that a low-resistance high-pass filter circuit with common-mode current suppression is designed on a high-frequency antenna element feed structure to suppress low-frequency current on a high-frequency antenna. This solution has the problem of a larger radiator aperture.
2) The high-frequency and low-frequency array is designed in a floating mode, the high-frequency antenna array is arranged in a floating mode and is slotted on the reflecting floor, and the current path of the high-frequency antenna is cut off. The common mode rejection capability of the scheme is weak, and the scheme cannot be used for PCB (Printed Circuit board ) vibrators.
Disclosure of Invention
The embodiment of the application aims to provide an antenna array subunit, an antenna radiating unit and an antenna array, which realize the purpose of inhibiting low-frequency common-mode induced current so as to solve the problem of common-mode coupling between high-frequency and low-frequency antennas.
In order to achieve the above object, the embodiment of the present application adopts the following technical scheme:
In a first aspect, an antenna array subunit is provided, comprising a radiator, a balun double-short-circuited line, and a resonant assembly, wherein:
the radiator is connected with the balun short-circuit double-wire circuit;
The resonance component is embedded into the balun short-circuit double wire to form at least one first-order resonance circuit with low-frequency stop band and high-frequency pass band characteristics, and each-order resonance circuit comprises an equivalent capacitance structure and an equivalent inductance structure.
In a second aspect, there is provided an antenna radiating element comprising a director, a support, and an antenna array subunit according to the first aspect, the support being for connecting the director and the antenna array subunit.
In a third aspect, there is provided an antenna array comprising a feed network, and at least two antenna radiating elements as described in the second aspect, each of the antenna radiating elements being electrically connected to the feed network according to a set array structure, the radiator in each of the antenna radiating elements being sized to be configured according to a set radiation frequency band.
The antenna array subunit provided by the embodiment of the application is characterized in that the resonance component is embedded in the balun short-circuit double line to form at least one first-order resonance circuit, each order resonance circuit comprises an equivalent capacitance structure and an equivalent inductance structure, a stop band can be presented at a low-frequency resonance frequency point and a high-frequency resonance frequency point can keep a pass band through the equivalent capacitance structure and the equivalent inductance structure in the resonance circuit, so that the purpose of inhibiting low-frequency common-mode induced current is realized, and the antenna array subunit is applied to a multi-frequency common-caliber antenna, so that the problem of common-mode coupling between high-frequency antennas and low-frequency antennas in the multi-frequency common-caliber antenna can be effectively solved.
The antenna radiating unit provided by the embodiment of the application is applied to the antenna array subunit with the characteristics of low-frequency stop band and high-frequency pass band, and can present the stop band at the low-frequency resonance frequency point and keep the pass band at the high-frequency resonance frequency point, so that the aim of inhibiting low-frequency common-mode induced current is fulfilled.
According to the antenna array provided by the embodiment of the application, the size of the radiator in each antenna radiating unit can be flexibly configured according to the set radiation frequency band to form a multi-frequency common-caliber antenna; the antenna array subunit with the characteristics of the low-frequency stop band and the high-frequency pass band is introduced into each antenna radiating unit, and the stop band can be presented at a low-frequency resonance frequency point, and the high-frequency resonance frequency point can keep the pass band, so that the aim of inhibiting low-frequency common-mode induced current is fulfilled, and the problem of common-mode coupling between high-frequency antennas and low-frequency antennas in an antenna array is effectively solved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute a limitation on the application. In the drawings:
fig. 1 is a schematic diagram of a multi-frequency multi-column antenna array according to the present application;
Fig. 2 is a schematic diagram of high-low frequency antenna array distribution provided by the present application;
fig. 3 is a schematic diagram illustrating a generation principle of a common mode coupling problem between high and low frequency antennas according to an embodiment of the present application;
Fig. 4 is a schematic structural diagram of an antenna array subunit according to an embodiment of the present application;
Fig. 5 is a schematic structural diagram of a resonant component in an antenna array subunit according to an embodiment of the present application;
fig. 6a and 6b are schematic front and back structures of an antenna array subunit according to an embodiment of the present application;
fig. 7 is a schematic structural diagram of a metal sheet in an EBG resonator according to an embodiment of the present application;
Fig. 8 is a schematic structural diagram of a resonant component in an antenna array subunit according to an embodiment of the present application;
fig. 9 is a schematic structural diagram of an antenna radiation unit according to an embodiment of the present application;
Fig. 10 is a schematic perspective view of an antenna radiation unit according to an embodiment of the present application;
fig. 11 is a schematic structural diagram of an antenna array according to an embodiment of the present application;
fig. 12 is a schematic layout diagram of an antenna array according to an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be clearly and completely described below with reference to specific embodiments of the present application and corresponding drawings. It will be apparent that the described embodiments are only some, but not all, embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, shall fall within the scope of the protection of this document.
The terms first, second and the like in the description and in the claims, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that embodiments of the application may be practiced otherwise than as specifically illustrated or described herein. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/", generally means that the associated object is an "or" relationship.
As described above, the common mode coupling problem between the high-frequency antenna and the low-frequency antenna exists in the multi-frequency common aperture antenna. The present inventors have found in the course of the invention that the principle of common mode coupling problem between high and low frequency antennas is generated as shown in fig. 3. The common mode coupling between the high and low frequency antennas is due to the balun component 302 and the radiator 301 of the high frequency antenna equivalently forming a low frequency monopole antenna, which can be inductively excited by the low frequency antenna 303 to change the gain and bandwidth of the low frequency antenna 303. Common mode coupling, unlike conventional differential mode coupling, cannot be suppressed with simple filters or decoupling branches.
In view of the above, the embodiments of the present application provide an antenna array subunit with common mode current suppression, an antenna radiating unit and an antenna array, which can solve the problem of common mode coupling between high-frequency and low-frequency antennas. The technical scheme provided by the embodiment of the application can be applied to a 5G (5 th Generation Mobile Communication Technology, fifth generation mobile communication technology) communication system, and also can be applied to a 4/5G converged communication system, and particularly can be applied to a base station antenna system.
The following describes in detail the technical solutions provided by the embodiments of the present application with reference to the accompanying drawings.
Referring to fig. 4, a schematic structural diagram of an antenna array subunit 400 according to an embodiment of the present application includes a radiator 401, a balun-shorted double line 402, and a resonant assembly 403, where:
the radiator 401 is in circuit connection with the balun short-circuit double-wire 402;
the resonant component 403 is embedded in the balun short-circuited two-wire 402 to form at least one first-order resonant circuit with low-frequency stop band and high-frequency pass band characteristics, and each of the first-order resonant circuits comprises an equivalent capacitance structure and an equivalent inductance structure.
Specifically, the antenna array subunit generally includes two balun short-circuit double-wires 402, each balun short-circuit double-wire 402 has an axisymmetric structure, the two balun short-circuit double-wires are mutually perpendicularly crossed and combined to form a balun assembly, and the radiator 401 is connected with the balun assembly in a circuit and is fixed on the upper portion of the balun assembly. It can be understood that the three-dimensional structure of the balun component is similar to four fan blades forming an included angle of 90 degrees, and the four fan blades can be seen to be in a cross shape when the balun component is overlooked.
Because each balun short-circuit double-wire 402 has an axisymmetric structure, in an alternative implementation manner, a group of resonant assemblies 403 may be respectively embedded in mirror symmetry on two sides of the symmetry axis of each balun short-circuit double-wire 402, which may also be referred to as the left side and the right side, and the structures of the two groups of resonant assemblies 403 embedded on each balun short-circuit double-wire 402 are identical, that is, two sides of the symmetry axis of each balun short-circuit double-wire 402 included in the balun assembly may be respectively embedded in one group of resonant assemblies 403, and four groups of resonant assemblies 403 may be embedded in the balun assembly. Alternatively, two sets, or three sets, or more sets of the resonant assemblies 403 may be embedded on two sides of the symmetry axis of each balun short-circuit double-wire 402 included in the balun assembly, which may be flexibly set according to actual requirements and the size of the balun short-circuit double-wire, and is not specifically limited.
To improve the performance of the low-frequency stop band and the high-frequency pass band, at least one first-order resonant circuit scheme may be designed using the resonant assembly 403, which may also be referred to as an LC circuit, which includes an inductor (denoted by the letter L) and a capacitor (denoted by the letter C) connected together.
In an alternative implementation, an EBG (Electromagnetic Band Gap, electromagnetic bandgap structure) resonator is introduced. The EBG resonator may be composed of two metal plates and a metal guide post connected between the two metal plates. The two metal sheets form a capacitor, the metal guide post forms an inductor, and the EBG resonator forms a first-order parallel resonator. The EBG resonator is embedded into the balun short-circuit double-wire, a gap with a certain width is kept between the EBG resonator and the balun short-circuit double-wire, the gap is coupled and connected with the balun short-circuit double-wire, the gap is a structure with capacitance characteristic and a structure with inductance characteristic with the metal ribbon wire, and a second-order series resonator is generated.
As shown in fig. 5, an alternative structure of the resonant assembly 403 may include an EBG resonator 501, and a metal double wire 502. Wherein:
The EBG resonator 501 and the metal double wire 502 are embedded on the surface of the balun-short-circuited double wire 402;
The EBG resonator 501 and the balun short-circuit double-wire 402 maintain a gap with a set width, the EBG resonator 501 is coupled to the balun short-circuit double-wire 402 through the gap, and the ratio of the width of the gap to the length of the gap is smaller than a set first ratio threshold, which may be set to 1/100, that is, the width of the gap is much smaller than the length of the gap, for example;
The metal double wire 502 is electrically connected to the balun short-circuit double wire 402, and a ratio of a length of the metal double wire 502 to a width of the metal double wire 502 is greater than a set second proportional threshold, which may be set to 50, that is, the length of the metal double wire is much greater than the width of the metal double wire, for example.
The balun short-circuit double-line 402 with an axisymmetric structure is composed of 421 and 422 on two sides of the symmetry axis, and two groups of resonant components 403 with identical structures can be embedded in mirror symmetry on two sides of the symmetry axis of each balun short-circuit double-line 402.
An alternative structure of the EBG resonator 501 includes two metal sheets 601 and 601' having the same size. As shown in fig. 6a, a metal sheet 601 is embedded in the front face of the balun-short-circuited-two wire 402; as shown in fig. 6b, another metal sheet 601' is embedded in the back side of the balun-short double wire 402 at a corresponding position.
Referring to fig. 7, the metal sheet 601 has a metal strap 602 in the middle and a first metallized via 603 connected to the tail of the metal strap 602. Similarly, the middle portion of the metal sheet 601 'has a metal strap 602', and a first metallized via 603 'connected to the tail of the metal strap 602'. The first metallized vias 603 and 603 'on the two metal plates 601 and 601' are electrically connected to form metal pillars; two metal sheets 601 and 601' maintain a gap of the set width with the balun-short double wire 402.
Since each balun double-short 402 has a certain thickness, a distance having a corresponding thickness is provided between the metal sheet 601 embedded in the front surface of the balun double-short 402 and the metal sheet 601' embedded in the back surface of the balun double-short 402, and in the same way, a distance having a corresponding thickness is provided between the first metallized vias 603 and 603', and a circuit connection can be achieved by coating metal (e.g., copper) between the first metallized vias 603 and 603 '. It can be understood that in the square structure embedded in the middle part of the metal sheet on the front surface of the balun short-circuit double-wire, the U-shaped structure except the metal strip line and the outer part of the first metallized via hole is made of non-metal materials, and the metal strip line in the middle part of the metal sheet and the first metallized via hole structure connected to the tail part of the metal strip line are made of metal materials. The metal double wire 502 includes two metal thin strip wires 604 and 604' of the same size. As shown in fig. 6a, a metal strip line 604 is embedded in the front surface of the balun-short double line 402, and the tail of the metal strip line 604 has a second metallized via 605; as shown in fig. 6b, another metal strip line 604' is embedded in the corresponding position on the back of the balun short double line 402, and the tail of the metal strip line 604' has a second metallized via 605'. The second metallized vias 605 and 605' on the two metal strap lines 604 and 604' are electrically connected by plating metal (e.g., copper) between the second metallized vias 605 and 605'.
The EBG resonator 501, and the metal double line 502 are embedded in the balun-shorted double line 401, and may constitute a two-stage resonator including a first-stage parallel resonator and a second-stage series resonator. The two-order resonator has wider low-frequency stop band and high-frequency pass band characteristics than the first-order resonator. Wherein:
The two metal sheets 601 and 601 'in the EBG resonator 501 form an equivalent capacitance structure of the first-order parallel resonator, the metal strap lines 602 and 602' on the two metal sheets 601 and 601 'in the EBG resonator 501 and the first metallized vias 603 and 603' form an equivalent inductance structure of the first-order parallel resonator;
the gap between the EBG resonator 501 and the balun short-circuited double line 402 constitutes an equivalent capacitance structure of the second-order series resonator, and the metal double line 502 constitutes an equivalent inductance structure of the second-order series resonator.
The resonance frequency point of the first-order parallel resonator is related to the size of the EBG resonator, and the larger the size of the EBG resonator is, the smaller the resonance frequency point is; the resonance frequency point of the second-order series resonator is related to the gap between the EBG resonator and the balun-short-circuited double-wire and the length of the metal double-wire. The parallel resonator and the series resonator both present a stop band at the low-frequency resonance frequency point, and the capacitive and inductive presented by the high-frequency part cancel each other, so that the impedance characteristic of the pass band is kept unchanged by the high frequency, and finally the low-frequency stop band and the high-frequency pass band are presented.
In the embodiment of the application, the multi-order distributed series-parallel resonator is built by embedding the EBG resonator on the balun short-circuit double wire and the metal double wire, the order of the series-parallel resonator is controlled, the low-frequency stop band characteristic and the high-frequency pass band characteristic are regulated, the aim of inhibiting the low-frequency common-mode induced current can be fulfilled, and the problem of low-frequency antenna pattern deterioration in the multi-frequency common-caliber antenna is improved, so that the problem of common-mode coupling between high-frequency and low-frequency antennas in the multi-frequency common-caliber antenna is effectively solved.
In an alternative implementation, the resonant assembly may be composed of a metal ribbon wire, which may be equivalently an inductor, and an interwoven ribbon wire set, which may be equivalently a capacitor, where the inductor and capacitor structures form a state of a low-frequency resonant open circuit (also referred to as an open circuit) and a high-frequency resonant path on the same side of the balun short-circuited double wire.
As shown in fig. 8, an alternative structure of the resonant assembly 403 may include a metal ribbon 801 and an interwoven ribbon set 802, wherein:
The surface of the balun short-circuit double-wire 402 is provided with a gap with a set width;
the metal thin strip line 801 is electrically connected between the slits, and a ratio of a length of the metal thin strip line 801 to a width of the metal thin strip line 801 is greater than a set third ratio threshold, which may be set to 50, that is, the length of the metal thin strip line is much greater than the width of the metal thin strip line, by way of example;
The interwoven stripline set 802 includes at least two striplines staggered up and down between the gaps, and a ratio of a distance between adjacent striplines to a width of the gaps is less than a set fourth proportional threshold, which may be set to 1/10, that is, a distance between adjacent striplines is substantially less than a width of the gaps, for example.
Illustratively, as shown in fig. 8, eight metal strips are disposed on both sides of the symmetry axis of the balun-shorted double line 402, and the distance between adjacent metal strips is far smaller than the width of the gap.
In particular, the metallic fine strip line 801, and the interwoven strip line set 802, may be embedded in the front side of the balun-shorted double line 402.
The metal strip line 801 and the interwoven strip line group 802 are embedded in the balun short-circuit double-wire 402, so that a first-order parallel resonant circuit can be formed. Wherein:
The interwoven strip line group 802 forms an equivalent capacitance structure of the first-order parallel resonant circuit, and the metal strip line 801 forms an equivalent inductance structure of the first-order parallel resonant circuit.
The antenna array subunit provided by the embodiment of the application is characterized in that the resonance component is embedded in the balun short-circuit double line to form at least one first-order resonance circuit, each order resonance circuit comprises an equivalent capacitance structure and an equivalent inductance structure, a stop band can be presented at a low-frequency resonance frequency point and a high-frequency resonance frequency point can keep a pass band through the equivalent capacitance structure and the equivalent inductance structure in the resonance circuit, so that the purpose of inhibiting low-frequency common-mode induced current is realized, and the antenna array subunit is applied to a multi-frequency common-caliber antenna, so that the problem of common-mode coupling between high-frequency antennas and low-frequency antennas in the multi-frequency common-caliber antenna can be effectively solved.
As shown in fig. 9, the embodiment of the present application further provides an antenna radiating unit 900, which includes a director 901, a support 902, and the antenna array subunit 400, where the support 902 is used to connect the director 901 and the antenna array subunit 400.
The antenna array subunit 400 generally includes a radiator 401 and a balun assembly, among other things. The balun components are formed by mutually perpendicular and crossed combination of two balun short-circuit double-lines 402, and in an alternative implementation, at least one group of resonant components 403 provided in the embodiment of the present application may be respectively embedded in mirror symmetry on two sides of a symmetry axis of each balun short-circuit double-line, and a schematic perspective view of a combined antenna radiating unit is shown in fig. 10.
The antenna radiating unit provided by the embodiment of the application is applied to the antenna array subunit with the characteristics of low-frequency stop band and high-frequency pass band, and can present the stop band at the low-frequency resonance frequency point and keep the pass band at the high-frequency resonance frequency point, so that the aim of inhibiting low-frequency common-mode induced current is fulfilled.
As shown in fig. 11, the embodiment of the present application further provides an antenna array, which includes a feed network 1101 and at least two antenna radiating units 900. Each antenna radiating element 900 comprises a director 901, a support 902, and the antenna array sub-elements 400 described above. Each of the antenna radiation units 900 is electrically connected to the feed network 1101 according to a set array structure.
The antenna array may comprise at least one transmit signal path and at least one receive signal path, the signals entering from the feed network 1101 input port, being fed to the balun assembly via the feed network 1101, and being transmitted to the outside via the radiator 401 and director 901; similarly, signals may be received via this path.
In order to realize the performance of the base station antenna, in a specific implementation, the base station antenna can be directly processed into an antenna array, and unit expansion can be performed according to actual antenna distribution conditions, wherein the antenna array comprises, but is not limited to, subarray forms such as 1to2,1to3,1to4,1to 5..1 toN, and the like, the "1" refers to a feed network, and the "2,3,4,5 and … N" refers to an antenna radiation unit. Wherein the 1to3 sub-array may achieve higher gain than the 1to2 sub-array, thereby achieving better network coverage.
The size of the radiator 401 in each antenna radiating element 900 may be configured according to a set radiation frequency band, and according to the shape of the radiator of the antenna radiating element, different scaling may be performed to achieve radiation effects of different frequency bands, and according to the electromagnetic field theory, the smaller the size of the radiator is, the higher the frequency band is achieved.
According to the antenna array provided by the embodiment of the application, the size of the radiator in each antenna radiating unit can be flexibly configured according to the set radiation frequency band to form a multi-frequency common-caliber antenna; the antenna array subunit with the characteristics of the low-frequency stop band and the high-frequency pass band is introduced into each antenna radiating unit, and the stop band can be presented at a low-frequency resonance frequency point, and the high-frequency resonance frequency point can keep the pass band, so that the aim of inhibiting low-frequency common-mode induced current is fulfilled, and the problem of common-mode coupling between high-frequency antennas and low-frequency antennas in an antenna array is effectively solved.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of the present application is not limited to performing the functions in the order shown or discussed, but may also include performing the functions in a substantially simultaneous manner or in an opposite order depending on the functions involved, e.g., the described methods may be performed in an order different from that described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.
The embodiments of the present application have been described above with reference to the accompanying drawings, but the present application is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present application and the scope of the claims, which are to be protected by the present application.
Claims (10)
1. An antenna element comprising a radiator, a balun double-wire, and a resonating element, wherein:
the radiator is connected with the balun short-circuit double-wire circuit;
The resonance component is embedded into the balun short-circuit double wire to form at least one first-order resonance circuit with low-frequency stop band and high-frequency pass band characteristics, and each-order resonance circuit comprises an equivalent capacitance structure and an equivalent inductance structure.
2. The antenna array subunit of claim 1 wherein the resonating component comprises an electromagnetic bandgap structure EBG resonator, and a metal double wire, wherein:
The EBG resonator and the metal double wire are embedded on the surface of the balun short-circuit double wire;
The EBG resonator and the balun short-circuit double-line keep a gap with a set width, the EBG resonator is coupled and connected with the balun short-circuit double-line through the gap, and the ratio of the width of the gap to the length of the gap is smaller than a set first proportional threshold;
The metal double wire is connected with the balun short-circuit double wire circuit, and the ratio of the length of the metal double wire to the width of the metal double wire is larger than a set second proportional threshold.
3. The antenna array subunit of claim 2 wherein the EBG resonator comprises two metal sheets of the same size, each metal sheet having a metal strip in the middle thereof and a first metallized via connected to the tail of the metal strip, one metal sheet being embedded in the front of the balun-shorted twin wire and the other metal sheet being embedded in the back of the balun-shorted twin wire, the first metallized via on both metal sheets being electrically connected to the first metallized via on both metal sheets, both metal sheets maintaining a gap of the set width with the balun-shorted twin wire;
The metal double-wire comprises two metal thin-strip wires with the same size, the tail part of each metal thin-strip wire is provided with a second metallized via hole, one metal thin-strip wire is embedded into the front surface of the balun short-circuit double-wire, the other metal thin-strip wire is embedded into the corresponding position of the back surface of the balun short-circuit double-wire, and the second metallized via holes on the two metal thin-strip wires are in circuit connection.
4. The antenna array subunit of claim 3 wherein the at least one first order resonant circuit comprises a first order parallel resonator and a second order series resonator, wherein:
the two metal sheets form an equivalent capacitance structure of the first-order parallel resonator, and the metal strip lines and the first metallized through holes on the two metal sheets form an equivalent inductance structure of the first-order parallel resonator;
the gap between the EBG resonator and the balun short-circuit double wire forms an equivalent capacitance structure of the second-order series resonator, and the metal double wire forms an equivalent inductance structure of the second-order series resonator.
5. The antenna array subunit of claim 1 wherein the resonating assembly comprises a metal fine strip line and an interwoven set of strip lines wherein:
the surface of the balun short-circuit double-wire is provided with a gap with a set width;
the metal fine strip line circuit is connected between the gaps, and the ratio of the length of the metal fine strip line to the width of the metal fine strip line is larger than a set third ratio threshold;
The interweaving type strip line group comprises at least two strip lines, the at least two strip lines are arranged in a staggered mode up and down between the gaps, and the ratio of the distance between the adjacent strip lines to the width of the gaps is smaller than a set fourth proportion threshold value.
6. The antenna array subunit of claim 5 wherein the metal strip and the interwoven groups of strips are embedded on the front face of the balun-shorted double wire.
7. The antenna array subunit of claim 6 wherein the at least one first order resonant circuit comprises a first order parallel resonant circuit wherein:
The interweaved strip line group forms an equivalent capacitance structure of the first-order parallel resonant circuit, and the metal fine strip line forms an equivalent inductance structure of the first-order parallel resonant circuit.
8. The antenna array subunit of claim 1 wherein the antenna array subunit comprises two balun short-circuit double-lines in an axisymmetric structure, wherein at least one group of resonant assemblies are respectively embedded in two sides of the symmetry axis of each balun short-circuit double-line in a mirror symmetry manner, and the two balun short-circuit double-lines are mutually perpendicularly crossed and combined to form a balun assembly; the radiator circuit is connected to an upper portion of the balun assembly.
9. An antenna radiating element comprising a director, a support for connecting the director and the antenna array sub-element, and an antenna array sub-element according to any of claims 1 to 8.
10. An antenna array comprising a feed network and at least two antenna radiating elements as claimed in claim 9, each of said antenna radiating elements being electrically connected to said feed network in accordance with a set array configuration, the size of the radiator in each of said antenna radiating elements being configured in accordance with a set radiation frequency band.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211479991.7A CN118073844A (en) | 2022-11-24 | 2022-11-24 | Antenna array subunit, antenna radiation unit and antenna array |
| PCT/CN2023/132885 WO2024109729A1 (en) | 2022-11-24 | 2023-11-21 | Antenna element unit, antenna radiation unit, and antenna array |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211479991.7A CN118073844A (en) | 2022-11-24 | 2022-11-24 | Antenna array subunit, antenna radiation unit and antenna array |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN118073844A true CN118073844A (en) | 2024-05-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211479991.7A Pending CN118073844A (en) | 2022-11-24 | 2022-11-24 | Antenna array subunit, antenna radiation unit and antenna array |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN118073844A (en) |
| WO (1) | WO2024109729A1 (en) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9054410B2 (en) * | 2012-05-24 | 2015-06-09 | Commscope Technologies Llc | Dipole strength clip |
| EP3333980B1 (en) * | 2015-08-31 | 2020-03-11 | Huawei Technologies Co., Ltd. | Antenna oscillators for dual-polarization of multiband antenna |
| CN108933331B (en) * | 2018-07-26 | 2024-04-30 | 胡南 | Archimedes spiral array antenna |
| CN109599657B (en) * | 2018-11-29 | 2020-06-05 | 安徽大学 | Design method for 5G base station-oriented antenna array based on integrated design of antenna array and power division feed network |
| CN111384594B (en) * | 2018-12-29 | 2021-07-09 | 华为技术有限公司 | High-frequency radiator, multi-frequency array antenna and base station |
| CN110011048B (en) * | 2019-04-26 | 2024-01-23 | 华南理工大学 | Broadband dual-polarized filter dipole antenna without external circuit |
| CN112909534A (en) * | 2021-03-29 | 2021-06-04 | 深圳市共进电子股份有限公司 | Sub-6G antenna, antenna system and terminal |
-
2022
- 2022-11-24 CN CN202211479991.7A patent/CN118073844A/en active Pending
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2023
- 2023-11-21 WO PCT/CN2023/132885 patent/WO2024109729A1/en unknown
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|---|---|
| WO2024109729A1 (en) | 2024-05-30 |
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