CN110506366A - Multi-frequency array antenna - Google Patents
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- CN110506366A CN110506366A CN201780089501.3A CN201780089501A CN110506366A CN 110506366 A CN110506366 A CN 110506366A CN 201780089501 A CN201780089501 A CN 201780089501A CN 110506366 A CN110506366 A CN 110506366A
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Abstract
The embodiment of the present application provides a kind of multi-frequency array antenna.The multi-frequency array antenna includes: reflecting plate, and the front of the reflecting plate is antenna reflective face, is used for reflection electromagnetic wave；Multiple radiation cell arrays, corresponding first frequency range of the first radiation cell array in multiple radiation cell array, corresponding second frequency range of the second radiation cell array in multiple radiation cell array, first frequency range are less than second frequency range；Wherein, the radiating element of second radiation cell array insulate with the reflecting plate where first radiating element and connects.The multi-frequency array antenna of the embodiment of the present application, by avoiding direct current from connecting between HF array antenna and low frequency array antenna, alternatively, reducing the radio frequency connection between the radiating element and reflecting plate of HF array antenna.Spurious resonance can be effectively avoided, and then reduces the size of multi-frequency array antenna.
Description
Embodiments of the present application relate to the field of communications, and more particularly, to a multi-frequency array antenna.
The multi-frequency multi-polarization antenna is a development trend of a base station antenna, and along with the development of multi-frequency multi-system of a mobile communication system, the corresponding base station antenna needs to perform corresponding multi-frequency multi-polarization so as to meet the common requirements of each operator or a plurality of operators. However, in the actual implementation process of the conventional multi-frequency antenna, the width dimension of the antenna is very large to meet the index requirement, and once the width dimension is made small, the index is obviously deteriorated.
In the prior art, index optimization is generally realized by changing the distance between high frequency and low frequency. Or, the isolation is improved by integrating the filter branch of the suppression frequency band 2 on the frequency band 1. Although the latter can effectively suppress the interference energy transmitted from the frequency band 2 to the antenna balun (balun) arm, so that the distance between the frequency band 1 antenna and the frequency band 2 antenna can be slightly reduced, the energy interference still exists on the radiation surface.
For example, a multi-frequency array patent (patent number: CN203910975) from china base station antenna manufacturers "jing xin (Comba) achieves index optimization by increasing the distance between the high-frequency array and the low-frequency array in the vertical direction. Specifically, at least two bottom plates are included, and adjacent bottom plates are arranged in a high-low staggered mode in the direction perpendicular to the radiation surface of the radiation unit. However, only slight dislocation from the height still does not solve the problem that when the frequency band 1 transmits signals, the influence of the radiation unit of the frequency band 2 on the frequency band 1 is only slightly weakened; in addition, an increase in the thickness dimension of the antenna is brought about.
For another example, in the morris (Argus) antenna, on the basis of integrally suppressing the filter branch of the f1 frequency band in the f2 frequency band, the influence of the f1 frequency band is suppressed by using high and low resistance on both sides of a Printed Circuit Board (PCB), so that some interference suppression effects can be achieved. However, the application of the antenna in a wide band is limited, and the performance of the antenna is still affected because the filtering branches cannot realize filtering in the wide band range.
Therefore, there is a need in the art to solve the miniaturization problem of the multi-band antenna.
Disclosure of Invention
The embodiment of the application provides a multi-frequency array antenna, which can effectively reduce the size of the multi-frequency array antenna.
In a first aspect, a multi-frequency array antenna is provided, including:
the front surface of the reflecting plate is an antenna reflecting surface and is used for reflecting electromagnetic waves;
a first radiating element array in the plurality of radiating element arrays corresponds to a first frequency band, a second radiating element array in the plurality of radiating element arrays corresponds to a second frequency band, and the first frequency band is smaller than the second frequency band; wherein the content of the first and second substances,
and the radiation units of the second radiation unit array are in insulated connection with the reflecting plate where the first radiation units are located.
The multi-frequency array antenna of the embodiment of the application reduces the current connection between the high-frequency array antenna and the low-frequency array antenna, or reduces the radio frequency connection between the radiation unit of the high-frequency array antenna and the reflecting plate. The parasitic resonance can be effectively reduced, and the size of the multi-frequency array antenna can be further reduced.
In addition, the multi-frequency array unit has the advantages of low cost, simple process and the like.
In some possible implementation manners, the reflecting plate where the first radiation unit is located and the reflecting plate where the second radiation unit is located are the same reflecting plate.
In some possible implementations, there is a space between the reflective plate where the first radiation element array is located and the reflective plate where the second radiation element array is located.
In some possible implementations, the reflector plate is provided with an opening through which the radiation element of the second radiation element array passes through the reflector plate, and the radiation element of the second radiation element array is connected to the reflector plate through a non-conductive supporting member in an insulating manner, so as to fix the radiation element of the second radiation element array on the reflector plate in an insulating manner.
In some possible implementations, the non-conductive dielectric support member has a thickness greater than or equal to 1/600 of the operating wavelength of the first frequency band.
In some possible implementations, the non-conductive medium support member and the radiating elements of the second radiating element array are connected by a non-metallic material or a metallic material.
In some possible implementations, the metal material is a metal screw.
In some possible implementations, the non-conductive medium supporting part is provided with a hook structure for hooking the conductive medium supporting part to the reflection plate.
In some possible implementations, an opening is disposed on the reflection plate, the radiation unit of the second radiation unit array passes through the reflection plate through the opening, and a space exists between the radiation unit of the second radiation unit array and the opening.
In some possible implementations, a spacing between a radiating element of the second radiating element array and the aperture is greater than or equal to 1/600 of the operating wavelength of the first frequency band.
In some possible implementation manners, the reflecting plate is provided with a plurality of openings, the radiation units of the second radiation unit array correspond to the openings one to one, and the radiation units of the second radiation unit array are fixed in the vertical direction of the positions of the openings corresponding to the antenna reflecting surface.
In some possible implementations, the radiating elements of the second array of radiating elements comprise a feeding printed circuit board, PCB, parallel to the reflector plate and not in direct contact.
In some possible implementations, an area of the feed PCB is smaller than or equal to a projected area of the second radiation element array aperture on the reflection plate.
In some possible implementations, the plurality of radiation element arrays are located on the same reflector plate, the second radiation element array is coaxially arranged with the first radiation element array, a center of the first radiation element array is arranged side by side with a third radiation element array of the plurality of radiation element arrays in SBS arrangement, and a distance between the center of the second radiation element array and a center of the third radiation element array is smaller than the first wavelength.
The multi-frequency array antenna provided by the embodiment of the application has the advantages of easiness in expansion, capability of expanding to any multi-frequency SBS array and high practicability.
In some possible implementations, the second radiation element array and the first radiation element array are located on different reflection plates, and a space exists between the reflection plate where the second radiation element array is located and the reflection plate where the first radiation element array is located, the plurality of radiation element arrays are arranged side by side in SBS, and a distance between a center of the second radiation element array and a center of the first radiation element array is smaller than the first wavelength.
The multi-frequency array antenna provided by the embodiment of the application can feed by using the coaxial line or the strip line, and the antenna efficiency can be effectively improved.
In some possible implementations, the first wavelength is about 0.5 times an air wavelength corresponding to a maximum frequency point in the first frequency band.
In some possible implementations, the frequency bands corresponding to each of the plurality of radiating element arrays are not completely the same.
In some possible implementations, a center frequency of the second frequency band is 2 times a center frequency of the first frequency band, or the second frequency band does not have a frequency band intersection with the first frequency band.
In some possible implementations, the radiating elements of the second radiating element array include a feed structure and a radiating structure electrically connected to the feed structure, and the feed structure is used for balanced feeding.
In some possible implementations, the radiating elements of the second array of radiating elements include dual-polarized elements.
In some possible implementations, the radiating elements of the first array of radiating elements include dual-polarized elements.
In some possible implementations, the number of the radiation elements of the second radiation element array is greater than or equal to 2.
In some possible implementations, the number of the radiation elements of the first radiation element array is greater than or equal to 2.
In some possible implementations, the feed structure is a balun.
Fig. 1 is a schematic diagram illustrating a connection manner between a radiation unit and a reflection plate of a multi-frequency array antenna according to an embodiment of the present application.
Fig. 2 is an analysis diagram of the interference of the multi-frequency array antenna f2 with the multi-frequency array antenna f1 according to the embodiment of the present application.
Fig. 3 is a schematic view of a hole structure provided on a reflection plate according to an embodiment of the present application.
Fig. 4 is a schematic diagram of a structure of a multi-frequency array antenna according to an embodiment of the present application.
Fig. 5 is another schematic diagram of a multi-frequency array antenna according to an embodiment of the present application.
Fig. 6 is a further schematic diagram of a multi-frequency array antenna according to an embodiment of the present application.
Fig. 7 is a schematic diagram of a structure of a dual-band array antenna according to an embodiment of the present application.
Fig. 8 is a schematic diagram of a connection between a radiation unit and a reflector plate corresponding to a first frequency band according to an embodiment of the present application.
The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings.
For the sake of understanding, the following description will be made of terms related to the embodiments of the present application.
An array antenna: the antenna system is formed by arranging a plurality of single antennas according to a certain geometric rule.
Shoulder-by-shoulder (SBS) alignment: the array antenna is formed by arranging at least two independent array antennas with frequency bands or more in an approximately parallel mode in the horizontal direction.
An antenna balun: a feed structure for an antenna provides a conversion of an unbalanced signal to a balanced signal for an excitation source of the antenna.
Wavelength of air: the air wavelength (wave length) refers to a distance that an electromagnetic wave of a certain frequency travels in the air within one vibration period.
Fig. 1 is a schematic diagram illustrating a connection manner between a radiation unit and a reflection plate of a multi-frequency array antenna according to an embodiment of the present application.
As shown in fig. 1, in the embodiment of the present application, the radiation unit and the reflection plate may be connected as follows:
coupling connection (or ground): capacitance effect exists between two metals which are closely spaced and have coupling areas, and when the capacitance value is proper, radio frequency signals can be transmitted between the two non-contact metals.
Alternatively, direct connection (or grounding): the metal is in direct contact with the metal, so that radio frequency signals or current signals can be transmitted between the metal.
Fig. 2 is a schematic diagram of the parasitic resonance of the SBS arrangement low frequency array of the embodiment of the present application.
As shown in fig. 2, the radiating element array corresponding to the first frequency band (f1) is arranged in SBS with the radiating element array corresponding to the second frequency band (f2), wherein the first frequency band f1 is smaller than the second frequency band f 2.
Specifically, when the operating frequencies (f1, f2) of two adjacent arrays are close to a multiple relationship, for example, the size of f2 is 2 times of f 1. When the horizontal distance d between the f1 array and the f2 array is short, the radiation pattern of the f1 array during operation is affected by the f2 array. This interference caused by resonance is called parasitic resonance interference.
For example, the operating frequency of the array f2 shown in fig. 2 is 2 times the operating frequency of the array f1, so that the length L2 of the radiating arm and balun for the radiating element in the array f2 is about 1/4 of the air wavelength corresponding to the operating frequency of the array f1, i.e., it can resonate as a monopole at the f1 frequency.
Meanwhile, since the value of d is small, the half-wave dipole cells in the array f2 can induce strong energy of the array f1 through near-field coupling, so that the array f2 radiates the induced energy again (generates parasitic resonance), thereby disturbing the radiation pattern of the array f 1.
Therefore, from the principle of the problem, it can be seen that there are 2 ideas to solve the miniaturization problem of the multi-frequency antenna:
the first idea is to enlarge the horizontal distance d between array f1 and array f2, reducing the near field coupling of array f1 to array f2, but this approach adds significantly to the physical size of the antenna array.
The second idea is to cut off or reduce the conduction path of the near-field coupled energy to the array f2, i.e., reduce the current and rf connections of the array f2 to the reflector plate.
The embodiment of the present application provides a multi-frequency array antenna based on the above ideas, and the multi-frequency array antenna includes:
the front surface of the reflecting plate is an antenna reflecting surface and is used for reflecting electromagnetic waves;
a plurality of radiating element arrays, a first radiating element array in the plurality of radiating element arrays corresponds to a first frequency band, a second radiating element array in the plurality of radiating element arrays corresponds to a second frequency band, and the first frequency band is smaller than the second frequency band.
And the radiation units of the second radiation unit array are in insulated connection with the reflecting plate where the first radiation units are located.
The multi-frequency array antenna of the embodiment of the application reduces the current connection between the high-frequency array antenna and the low-frequency array antenna, or reduces the radio frequency connection between the radiation unit of the high-frequency array antenna and the reflecting plate. Parasitic resonance can be effectively reduced, and the size of the multi-frequency array antenna is further reduced.
In addition, the multi-frequency array unit has the advantages of low cost, simple process and the like.
Optionally, the reflecting plate where the first radiation unit is located and the reflecting plate where the second radiation unit is located are the same reflecting plate.
Optionally, a space exists between the reflective plate where the first radiation unit array is located and the reflective plate where the second radiation unit array is located.
Optionally, as shown in fig. 3, an opening is disposed on the reflection plate, through which the radiation element of the second radiation element array passes through the reflection plate, and the radiation element of the second radiation element array is in insulated connection with the reflection plate through a non-conductive medium supporting component, so as to fix the radiation element of the second radiation element array on the reflection plate in an insulated manner.
Optionally, the non-conductive dielectric support member has a thickness greater than or equal to 1/600 of the operating wavelength of the first frequency band.
Optionally, the non-conductive dielectric support member is connected with the radiating elements of the second radiating element array by a non-metallic material or a metallic material. For example, the metal material is a metal screw.
Optionally, the non-conductive medium supporting part is provided with a hook structure for hooking the conductive medium supporting part to the reflection plate.
Optionally, an opening is disposed on the reflection plate, the radiation unit of the second radiation unit array passes through the reflection plate through the opening, and a space exists between the radiation unit of the second radiation unit array and the opening.
Optionally, the spacing between the radiating element of the second radiating element array and the aperture is greater than or equal to 1/600 of the operating wavelength of the first frequency band.
Optionally, a plurality of openings are formed in the reflection plate, the radiation units of the second radiation unit array correspond to the openings one to one, and the radiation units of the second radiation unit array are fixed in the vertical direction of the positions of the openings corresponding to the antenna reflection surface.
Optionally, the radiating elements of the second array of radiating elements comprise a feed printed circuit board PCB parallel to and not in direct contact with the reflector plate.
Optionally, the area of the feed PCB is smaller than or equal to the projection area of the second radiating element array aperture on the reflector plate.
Optionally, the frequency bands corresponding to each of the plurality of radiating element arrays are not completely the same.
Optionally, the center frequency of the second frequency band is 2 times of the center frequency of the first frequency band, or the second frequency band and the first frequency band have no frequency band intersection.
Optionally, the radiating elements of the second radiating element array include a feed structure and a radiating structure electrically connected to the feed structure, the feed structure being used for balanced feeding.
Optionally, the radiating elements of the second array of radiating elements comprise dual-polarized elements.
Optionally, the radiating elements of the first array of radiating elements comprise dual-polarized elements.
Optionally, the number of the radiation elements of the second radiation element array is greater than or equal to 2.
Optionally, the number of the radiation elements of the first radiation element array is greater than or equal to 2.
Optionally, the feed structure is a balun.
In the embodiment of the application, the current connection is reduced by not having metal fastening connection such as screws between the units of the array f2 and the reflecting plates. Alternatively, the radio frequency connections may be reduced by reducing the metal coupling area between the elements of array f2 and the reflector plate. Thereby reducing the generation of parasitic resonance and effectively reducing the size of the multi-frequency array antenna.
In addition, the multi-frequency array unit of the embodiment of the application has the advantages of low cost, high antenna efficiency, simple process and the like.
The multi-frequency array antenna according to the embodiment of the present application is exemplified by coaxial line feeding and stripline feeding.
As an embodiment, the plurality of radiation element arrays are located on the same reflector, the second radiation element array is coaxially arranged with the first radiation element array, a center of the first radiation element array is arranged in a shoulder-to-shoulder (SBS) arrangement with a third radiation element array of the plurality of radiation element arrays, and a distance between the center of the second radiation element array and the center of the third radiation element array is smaller than the first wavelength.
Optionally, the first wavelength is 0.5 times of an air wavelength corresponding to a maximum frequency point in the first frequency band.
By way of example and not limitation, in the embodiments of the present application, the multi-frequency array antenna is a quad-frequency array antenna.
Fig. 4 is a schematic diagram of a structure of a multi-frequency array antenna according to an embodiment of the present application.
As shown in fig. 4, the multi-frequency array antenna includes: the antenna comprises a radiation unit array corresponding to an f1 frequency band, a radiation unit array corresponding to an f2 frequency band, a radiation unit array corresponding to an f3 frequency band and a radiation unit array corresponding to an f4 frequency band. The radiation unit array corresponding to the f1 frequency band and the radiation unit array corresponding to the f2 frequency band are coaxially arranged, and the radiation unit array corresponding to the f3 frequency band and the radiation unit array corresponding to the f4 frequency band are respectively arranged in a shoulder-to-shoulder (SBS) manner with the radiation unit array corresponding to the f1 frequency band. The f1 frequency band is the lowest frequency band, and the other three frequency bands (f2 frequency band, f3 frequency band, f4 frequency band) are not identical.
In the embodiment of the present application, in order to maximize the simplification of the design, each array is optionally arranged in a straight line.
Optionally, the number of the radiation units corresponding to the f1 frequency band is n, where n is an integer greater than 2; the number of the radiation units corresponding to the other three frequency bands is m, and m is an integer larger than 4. Alternatively, the number of the radiation units corresponding to each frequency band may also be different, and this is only an example.
For convenience of description, in the embodiment of the present application, an array composed of the f1 band and the f2 band is referred to as a coaxial column, and an array composed of the f3 band or an array composed of the f4 band is referred to as a Side column.
Wherein, 20-1 to 20-n are the labels of the radiating elements of the side columns from the top of the antenna to the bottom of the antenna.
In this embodiment, the distance between the centers of the coaxial line and the side line is 0.45 wavelengths (the wavelength is the wavelength corresponding to the highest frequency of the f1 frequency band), and the problem of signal interference generated by the high frequency band (f3 and f 4) of the array to the low frequency band (f1 frequency band) needs to be solved.
Alternatively, the radiation elements in the f3 band and the f4 band are not directly grounded or coupled to the reflector plate, and are grounded to the reflector plate through a feeding network.
Fig. 5 is a schematic view of the connection between the radiation elements of the side columns and the reflective plate of the embodiment of the present application.
As shown in fig. 5, the radiation element 20-2 is provided with an opening 201-2 in the vertical projection direction of the reflection plate 204, wherein the radiation element 20-2 includes a radiation arm 202-2 and a balun 203-2, and the balun 203-2 is electrically connected to the feeding core 204-2 of the radiation element 20-2.
It should be understood that fig. 5 only illustrates the radiation unit 20-2 as an example, and alternatively, each radiation unit of the side column may be designed by using the radiation unit 20-2, and the embodiment of the present application is not particularly limited.
Fig. 6 is another schematic view of the connection between the radiating elements of the side column and the reflector plate of the embodiment of the present application.
As shown in fig. 6, the radiating elements of each side column have a non-conductive dielectric support member 205-2.
Specifically, the radiation unit 20-2 passes through the reflection plate 204 through the opening 201-2, and the radiation unit 20-2 is connected to the reflection plate 204 through a non-conductive supporting member 205-2 for fixing the radiation unit 20-2 on the reflection plate 204 in an insulating manner.
Wherein, the balun of the radiation unit 20-2 extends out of the back of the reflection plate 204 and is electrically connected with the coaxial line 207-2; the coaxial line 207-2 will feed a high frequency current to the radiating element 20-2, causing the radiating element 20-2 to radiate a signal.
Optionally, the non-conductive medium supporting part 205-2 in the embodiment of the present application is provided with a hook structure for hooking the non-conductive medium supporting part 205-2 on the reflection plate 204. For example, the hook structure is a four-claw structure.
Alternatively, in the embodiment of the present application, the non-conductive medium supporting member 205-2 and the radiation unit 20-2 are connected by a non-metallic material or a metallic material. For example, as shown in fig. 6, the radiating element 20-2 is attached to the non-conductive dielectric support member 205-2 by screws 206-2.
In the embodiment of the present application, the non-conductive dielectric support member 205-2 insulates the radiation unit 20-2 and the reflective plate 204, and the gap is not enough to couple the radiation unit 20-2 and the reflective plate 204, so as to achieve the interference reduction effect.
Specifically, the radiation unit 20-2 can be fixed to the reflection plate 204 by the non-conductive dielectric support member 205-2 and the screw 206-2 without the ground from the reflection plate 204. Galvanic connections can be avoided. Thereby avoiding the generation of parasitic resonance and effectively reducing the size of the multi-frequency array antenna.
In addition, the coupling area between the radiation unit 20-2 and the reflection plate is reduced by the opening 201-2, and the radio frequency connection is reduced. The size of the multi-frequency array antenna can be further reduced.
In this embodiment, the multi-frequency array antenna is a narrow-width multi-frequency antenna under a conventional coaxial line feeding condition, and a multi-frequency antenna system under an integrated feeding mode according to the embodiment of the present application is described below with reference to the accompanying drawings.
As another embodiment, the second radiation element array and the first radiation element array are located on different reflection plates, and there is a space between the reflection plate where the second radiation element array is located and the reflection plate where the first radiation element array is located, the plurality of radiation element arrays are arranged side by side in SBS, and a distance between a center of the second radiation element array and a center of the first radiation element array is smaller than the first wavelength.
For example, the first wavelength is 0.5 times of the air wavelength corresponding to the maximum frequency point in the first frequency band.
By way of example and not limitation, in the embodiments of the present application, the multi-frequency array antenna is a dual-frequency array antenna. The dual-band array antenna is fed by a stripline feed system.
As shown in fig. 7, 304a is a part of the reflector of the dual-band antenna, and 304b is another part of the reflector of the dual-band antenna; the two parts are spliced to form a whole reflecting plate of the dual-frequency antenna; 304a and 304b are assembled such that the array spacing (D value shown in fig. 7) of the two frequency bands is less than or equal to half the wavelength of the maximum frequency point of the f1 frequency band, and a gap D of a certain width may exist between 304a and 304 b. Wherein, the f2 frequency band is a high frequency band, and optionally, the number of the radiation units is 11; the f1 frequency band is a low frequency band relative to a high frequency band, and optionally, the number of radiating elements is 5. 30-1 ~ 30-11 are the high frequency row from the antenna bottom (feed end) to the antenna top end of the radiation unit number.
It will be appreciated that the electrically front face is used for the formation of the radiation pattern of the radiating elements and the nearest back face, corresponding to the front face, is used for the ground layer in which the striplines are located for normal transmission of the striplines.
Specifically, as shown in fig. 7, the dual frequency array antenna includes:
304 a-01: the f2 frequency band +45 degree polarization feeder stripline cavity.
304 a-02: f2 frequency band-45 degree polarization feed stripline cavity.
304 b-01: the f2 frequency band +45 degree polarization feeder stripline cavity.
304 b-02: f2 frequency band-45 degree polarization feed stripline cavity.
307a-01 and 307 a-02: corresponding to the inner conductors of the stripline cavities 304a-01 and 304 a-02.
307b-01 and 307 b-02: corresponding to the inner conductors of the stripline cavities 304b-01 and 304 b-02.
Because the balun of the radiation units 30-1 to 30-11 is in insulation connection with the reflection plate 304a through the non-conductive medium supporting component 305-1, the capacitance value cannot reach the level of the electromagnetic field grounding effect, and the interference reduction effect can be further achieved. This is readily understood by those skilled in the art and will not be described in detail herein.
In other words, 305-1 in FIG. 7 functions as 205-2 in FIG. 6 for the insulation connection of the radiating element and the reflective plate.
Fig. 8 is a schematic structural diagram of a stripline feed in an embodiment of the present application.
As shown in fig. 8, in the embodiment of the present application, the feeding of the radiating element is a strip line feeding, instead of a coaxial line feeding, and the strip line is electrically connected to the feeding core 304-1 of the radiating element, instead of being electrically connected to the coaxial line.
Specifically, the balun of the radiation elements 30-1 to 30-11 and the reflection plate 304a are not electrically connected, but are insulated and connected by the non-conductive support member 305-1, that is, the balun 303-1 of the radiation element and the reflection plate 304a are electrically connected. Thereby achieving the interference elimination effect.
In the embodiment of the application, the multi-frequency array antenna can feed by using a coaxial line or a strip line, and the antenna efficiency can be effectively improved.
It should be noted that the above-mentioned embodiments are only preferred embodiments of the present invention, but not limited to the above-mentioned embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be regarded as equivalent substitutions, and all are included in the scope of the present invention.
It is also to be understood that the terminology used in the embodiments of the present application and the appended claims is for the purpose of describing particular embodiments only, and is not intended to be limiting of the embodiments of the present application.
As another example, as used in the examples of the present application and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
Also for example, the terms first, second, third, etc. may be used in the embodiments of the present application to describe various antenna arrays, or antenna elements, but these arrays and elements should not be limited to these terms. These terms are only used to distinguish one array or cell from another.
In the several embodiments provided in the present application, it should be understood that the disclosed system and apparatus may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and there may be other divisions when actually implementing, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not implemented. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the elements can be selected according to actual needs to achieve the purpose of the embodiments of the present application.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
If implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solutions of the embodiments of the present application may be essentially implemented or make a contribution to the prior art, or may be implemented in the form of a software product stored in a storage medium and including several instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
The above description is only a specific implementation of the embodiments of the present application, but the scope of the embodiments of the present application is not limited thereto, and any person skilled in the art can easily conceive of changes or substitutions within the technical scope of the embodiments of the present application, and all the changes or substitutions should be covered by the scope of the embodiments of the present application. Therefore, the protection scope of the embodiments of the present application shall be subject to the protection scope of the claims.
Claims (15)
- A multi-frequency array antenna, comprising:the front surface of the reflecting plate is an antenna reflecting surface and is used for reflecting electromagnetic waves;a first radiating element array in the plurality of radiating element arrays corresponds to a first frequency band, a second radiating element array in the plurality of radiating element arrays corresponds to a second frequency band, and the first frequency band is smaller than the second frequency band; wherein the content of the first and second substances,and the radiation units of the second radiation unit array are in insulated connection with the reflecting plate where the first radiation units are located.
- The multi-frequency array antenna of claim 1, wherein the reflector plate of the first radiation element and the reflector plate of the second radiation element are the same reflector plate.
- The multi-frequency array antenna of claim 1, wherein a space exists between the reflector plate on which the first array of radiating elements is located and the reflector plate on which the second array of radiating elements is located.
- The multi-frequency array antenna of any one of claims 1 to 3, wherein the reflection plate is provided with an opening, the radiation element of the second radiation element array passes through the reflection plate through the opening, and the radiation element of the second radiation element array is connected to the reflection plate through a non-conductive supporting member for fixing the radiation element of the second radiation element array on the reflection plate in an insulating manner.
- The multi-frequency array antenna of claim 4, wherein the thickness of the non-conductive dielectric support member is greater than or equal to 1/600 times the operating wavelength of the first frequency band.
- The multi-frequency array antenna of claim 4 or 5, wherein the non-conductive dielectric support member is connected to the radiating elements of the second array of radiating elements by a non-metallic material or a metallic material.
- The multi-frequency array antenna of claim 6, wherein the metal material is a metal screw.
- The multi-frequency array antenna of any one of claims 4-7, wherein the non-conductive medium supporting member is provided with a hook structure for hooking the conductive medium supporting member to the reflection plate.
- The multi-frequency array antenna of any one of claims 1-3, wherein the reflector plate has an opening, the radiating element of the second array of radiating elements passes through the reflector plate through the opening, and there is a gap between the radiating element of the second array of radiating elements and the opening.
- The multi-band array antenna of claim 9, wherein the spacing between the radiating elements of said second array of radiating elements and said aperture is greater than or equal to 1/600 of the operating wavelength of said first frequency band.
- The multi-frequency array antenna according to any one of claims 4 to 10, wherein the reflection plate has a plurality of openings, the radiation elements of the second radiation element array are corresponding to the openings one by one, and the radiation elements of the second radiation element array are fixed in a vertical direction at positions corresponding to the openings of the reflection surface of the antenna.
- The multi-frequency array antenna of any one of claims 1 to 3, wherein the radiating elements of the second array of radiating elements comprise a feed Printed Circuit Board (PCB) parallel to and not in direct contact with the reflector plate.
- The multi-frequency array antenna of claim 12, wherein the area of the feed PCB is smaller than or equal to the area of the projection of the second radiating element array aperture onto the reflector plate.
- The multi-frequency array antenna of any one of claims 1-13, wherein the plurality of radiating element arrays are located on the same reflector plate, the second radiating element array is coaxially arranged with the first radiating element array, the first radiating element array is arranged side-by-side with a third radiating element array of the plurality of radiating element arrays in SBS, and a distance between a center of the second radiating element array and a center of the third radiating element array is less than half of the first wavelength.
- The multi-frequency array antenna of any one of claims 1-13, wherein the second array of radiating elements and the first array of radiating elements are located on different reflective plates, and wherein there is a space between the reflective plate on which the second array of radiating elements is located and the reflective plate on which the first array of radiating elements is located, and wherein the plurality of arrays of radiating elements are arranged side-by-side on SBS, and wherein a distance between a center of the second array of radiating elements and a center of the first array of radiating elements is less than half of the first wavelength.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2017/080382 WO2018188012A1 (en) | 2017-04-13 | 2017-04-13 | Multi-frequency array antenna |
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| Publication Number | Publication Date |
|---|---|
| CN110506366A true CN110506366A (en) | 2019-11-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201780089501.3A Pending CN110506366A (en) | 2017-04-13 | 2017-04-13 | Multi-frequency array antenna |
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| Country | Link |
|---|---|
| CN (1) | CN110506366A (en) |
| WO (1) | WO2018188012A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110444858B (en) * | 2019-07-29 | 2021-09-07 | 中信科移动通信技术股份有限公司 | Method for improving index, antenna array and base station antenna |
| CN113937465B (en) * | 2021-10-25 | 2023-03-21 | 华南理工大学 | Dual-polarized electromagnetic transparent antenna and method for realizing dual-frequency scattering suppression |
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| CN101599579B (en) * | 2008-06-05 | 2016-08-10 | 京信通信***（中国）有限公司 | High cross polarization ratio antenna and dual-polarization radiating unit thereof |
| CN103117457A (en) * | 2013-02-18 | 2013-05-22 | 江苏华灿电讯股份有限公司 | Base station antenna structure for improving intermodulation parameters |
| CN203260737U (en) * | 2013-03-29 | 2013-10-30 | 广东晖速通信技术有限公司 | Four-frequency multimode electrically-tuned antenna |
| CN103618149A (en) * | 2013-12-02 | 2014-03-05 | 江苏捷士通射频***有限公司 | Double-polarized radiation unit and antenna |
| CN204857971U (en) * | 2015-08-05 | 2015-12-09 | 佛山市迪安通讯设备有限公司 | Three frequency dual polarized antenna |
-
2017
- 2017-04-13 WO PCT/CN2017/080382 patent/WO2018188012A1/en active Application Filing
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| WO2018188012A1 (en) | 2018-10-18 |
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Application publication date: 20191126 |