CN110911817A - Dual-polarized base station radiating array with high gain and high frequency trapped wave - Google Patents
Dual-polarized base station radiating array with high gain and high frequency trapped wave Download PDFInfo
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- CN110911817A CN110911817A CN201911224170.7A CN201911224170A CN110911817A CN 110911817 A CN110911817 A CN 110911817A CN 201911224170 A CN201911224170 A CN 201911224170A CN 110911817 A CN110911817 A CN 110911817A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
- H01Q19/10—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
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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
- H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
- H01Q1/246—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for base stations
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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
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/0006—Particular feeding systems
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/30—Combinations of separate antenna units operating in different wavebands and connected to a common feeder system
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Abstract
本发明适用于基站天线设备技术领域，提供了一种具有高增益及高频陷波的双极化基站辐射阵子，包括有：一个反射底板；至少一个低频辐射阵子，固定安装在所述反射底板上；至少四个高频辐射阵子，固定安装在所述反射底板上，且均匀环绕在所述低频辐射阵子的四周；至少四条金属丝，分别独立对称架设在所述低频辐射阵子四周分布的支撑架上。借此，本发明在低频天线阵子四周设置的金属丝起到了寄生辐射天线的作用，该寄生天线产生的辐射场与低频阵子产生的辐射场相叠加，在不影响嵌套布局方案的情况下，充分利用空间资源提高低频天线的增益。
The present invention is applicable to the technical field of base station antenna equipment, and provides a dual-polarized base station radiation array with high gain and high-frequency notch, comprising: a reflection base plate; at least one low-frequency radiation array fixedly installed on the reflection base plate at least four high-frequency radiation elements, fixedly installed on the reflective bottom plate, and evenly surrounded by the low-frequency radiation element; at least four metal wires, independently and symmetrically erected on the supports distributed around the low-frequency radiation element on the shelf. Thereby, the metal wires arranged around the low-frequency antenna element of the present invention play the role of a parasitic radiation antenna, and the radiation field generated by the parasitic antenna is superimposed with the radiation field generated by the low-frequency antenna element. Make full use of space resources to improve the gain of low-frequency antennas.
Description
Technical Field
The invention relates to the technical field of base station antenna equipment, in particular to a dual-polarized base station radiating array with high gain and high-frequency trapped waves.
Background
With the increasing improvement of the construction of the global communication field, a mobile communication system is a 2G/3G/4G multi-system coexistence system at present, and the mobile communication system also coexists with a 5G system in the future, and in order to reduce the network construction and operation maintenance cost and consider the evolvable performance of a network in the later period for a long time, operators put higher demands on the broadband, miniaturization and multi-system of an antenna. One antenna is required to meet more network standards, cover all mobile communication frequency bands which are available and may be used in the future, and the antenna is required to be small in size so as to facilitate site selection of a base station and save space resources. Therefore, there is a need for the research of multi-frequency, wideband, and miniaturized base station antenna technology, and the array antenna of the high-low frequency nested scheme is one of the main paths for realizing miniaturization.
In the existing base station array antenna, a high-frequency radiation array and a low-frequency radiation array are often required to be installed on a floor together, so that the multi-system and miniaturization of an antenna system are realized. In order to reduce the shielding of the high frequency radiation unit by the low frequency radiation unit, a cross array with ± 45 ° polarization synthesized by a horizontal radiation unit and a vertical radiation unit is proposed in the prior patent, such as the low frequency radiation array proposed in publication No. CN 104916910A. In the base station antenna system, the high-frequency antenna and the low-frequency antenna coexist, and are close to each other, mutual coupling is easily generated, and a directional diagram is distorted, and a filter network with an H-shaped structure is loaded on a low-frequency radiating sheet to suppress the influence of a low-frequency oscillator on a high-frequency radiating directional diagram in the conventional publication No. CN 206412463U.
As can be seen, the conventional method has many problems in practical use, and therefore, needs to be improved.
Disclosure of Invention
In view of the above-mentioned drawbacks, an object of the present invention is to provide a dual-polarized base station radiating array with high gain and high-frequency notch, wherein the metal wires disposed around the low-frequency antenna array play a role of a parasitic radiating antenna, and a radiating field generated by the parasitic antenna and a radiating field generated by the low-frequency array are superposed, so that the gain of the low-frequency antenna is improved by fully utilizing space resources without affecting a nested layout scheme.
In order to achieve the above object, the present invention provides a dual-polarized base station radiating array with high gain and high frequency notch, comprising:
a reflective backplane;
at least one low-frequency radiation oscillator fixedly arranged on the reflection bottom plate;
the four high-frequency radiation arrays are fixedly arranged on the reflection bottom plate and uniformly surround the periphery of the low-frequency radiation arrays;
at least four metal wires are respectively and independently and symmetrically erected on the supporting frames distributed around the low-frequency radiation array.
According to the dual-polarization base station radiation array with the high gain and the high-frequency trapped wave, the low-frequency radiation array comprises a die-casting feed structure, a PCB coupling feed structure and four PCB radiation branches, the lower end of the die-casting feed structure is fixedly installed on the reflection bottom plate, and the PCB coupling feed structure and the PCB radiation branches are installed at the upper end of the die-casting feed structure.
According to the dual-polarized base station radiating array with the high-gain and high-frequency trapped wave, the PCB coupling feed structure comprises a dielectric plate, four rectangular-like copper foils are respectively printed on the upper surface and the lower surface of the dielectric plate, and the copper foils on the upper surface and the lower surface of the dielectric plate are correspondingly conducted one by one through metalized through holes; the four copper foils on the same surface of the dielectric plate are symmetrically distributed, and four interval gaps are formed between every two adjacent copper foils; and an open-circuit gap is etched on each copper foil.
According to the dual-polarized base station radiation array with the high gain and the high-frequency trapped wave, the open-circuit gap is a linear gap or an L-shaped gap or a bent gap, and the total length of the open-circuit gap is one quarter wavelength of the corresponding frequency point.
According to the dual-polarized base station radiation array with the high-gain and high-frequency trapped wave, one ends of the four PCB radiation branches are respectively installed on the four spacing gaps on the upper end face of the dielectric plate, the upper surface and the lower surface of each PCB radiation branch are provided with at least one same radiation piece, and the radiation pieces are of rectangular and/or step-shaped and/or multi-fold line type structures.
According to the dual-polarized base station radiating array with the high gain and the high-frequency trapped wave, the die-casting feed structure comprises an air microstrip line structure and at least two short-circuit metal columns, and the air microstrip line structure is connected with the short-circuit metal columns to form a balun of the antenna.
According to the dual-polarized base station radiation oscillator with high gain and high-frequency trapped wave, the air microstrip line structure comprises a first microstrip ground, a second microstrip ground, a first microstrip feed piece and a second microstrip feed piece, wherein the first microstrip ground and the first microstrip feed piece are connected with two copper foils on the lower end face of the dielectric plate through a first printed metal conductor, and the second microstrip ground and the second microstrip feed piece are connected with the other two copper foils on the lower end face of the dielectric plate through a second printed metal conductor.
According to the dual-polarized base station radiating oscillator with the high gain and the high-frequency notch, the dielectric plate is an FR4 substrate.
According to the dual-polarized base station radiating array with the high-gain and high-frequency trapped wave, the support frame is made of plastic and is vertically installed on the reflecting bottom plate.
According to the dual-polarized base station radiation array with high gain and high-frequency trapped wave, the metal wire is linear or right-angle or arc or irregular; and/or
The total length of the single metal wire is 215 mm-245 mm; and/or
The high-frequency radiation array is a conventional high-frequency die-casting array, and the low-frequency radiation array is nested in the center of the high-frequency radiation array.
The invention discloses a dual-polarized base station radiation array with high gain and high-frequency trapped wave, which comprises a reflection bottom plate; at least one low-frequency radiation oscillator fixedly arranged on the reflection bottom plate; the four high-frequency radiation arrays are fixedly arranged on the reflection bottom plate and uniformly surround the periphery of the low-frequency radiation arrays; at least four metal wires are respectively and independently and symmetrically erected on the supporting frames distributed around the low-frequency radiation array. Therefore, the metal wires arranged around the low-frequency antenna array play a role of a parasitic radiation antenna, a radiation field generated by the parasitic antenna is superposed with a radiation field generated by the low-frequency array, and under the condition of not influencing a nested layout scheme, space resources are fully utilized to improve the gain of the low-frequency antenna.
Drawings
Fig. 1 is a schematic structural diagram of a dual-polarized base station radiating array with high gain and high frequency notch according to a preferred embodiment of the present invention;
fig. 2 is a schematic structural diagram of the low-frequency radiating array of the dual-polarized base station radiating array with high gain and high-frequency notch according to the preferred embodiment of the present invention;
fig. 3 is a current distribution diagram on the PCB radiating stub of the low frequency radiating array of the dual polarized base station radiating array with high gain and high frequency notch according to the preferred embodiment of the present invention;
fig. 4 is a schematic structural diagram of the PCB coupled feeding structure of the low frequency radiating array of the dual polarized base station radiating array with high gain and high frequency notch according to the preferred embodiment of the present invention;
fig. 5 is a schematic structural diagram of the die-cast feed structure of the low-frequency radiating array of the dual-polarized base station radiating array with high gain and high-frequency notch according to the preferred embodiment of the present invention;
fig. 6 is a radiation pattern of the high-frequency radiation array at the 2690MHz frequency point when there is an etched open slot on the PCB coupled feed structure of the low-frequency radiation array of the dual-polarized base station radiation array with high gain and high-frequency notch;
fig. 7 is a curve of the gain of the low-frequency radiating array with or without metal wires around the radiating array of the dual-polarized base station along with the change of frequency.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Fig. 1 shows a dual-polarized base station radiating array with high gain and high frequency notch according to a preferred embodiment of the present invention, which includes a reflective bottom plate 4; the low-frequency radiating array 1 is fixedly arranged on the reflecting bottom plate 4, and the four high-frequency radiating arrays 2 are fixedly arranged on the reflecting bottom plate 4 and uniformly surround the low-frequency radiating array 2; at least four metal wires 3 are respectively and independently and symmetrically erected on supporting frames 5 distributed around the low-frequency radiation array 1; the low-frequency radiating array 1 is a cross array, the working frequency range of the low-frequency radiating array is 698 MHz-960 MHz, the working frequency range of the high-frequency radiating array 2 is 1710 MHz-2690 MHz, and the high-frequency radiating array 2 and the low-frequency radiating array 1 are both antennas polarized at +/-45 degrees; this embodiment is including four high frequency radiation array 2 and four wire 3, and even symmetric distribution sets up four high frequency radiation array 2 around low frequency radiation array 1, low frequency radiation array 1 still is equipped with a plurality of support frame 5 near all around, and four wire 3 symmetries are erect on support frame 5, can utilize the parasitic radiation that four wire 3 of symmetry all around the array produced to improve the gain of array, and the radiation field that this parasitic antenna produced superposes with the radiation field that low frequency array produced mutually, under the condition that does not influence nested layout scheme, make full use of space resource improves the gain of low frequency antenna.
After the low-frequency radiation array 1 radiates, the metal wire 3 can be coupled to corresponding current, electromagnetic waves radiated by the coupling current and electromagnetic waves radiated by the low-frequency radiation array 1 are superposed, and under the condition that a nested layout scheme is not influenced, a directional diagram radiated by the original low-frequency array is improved by fully utilizing space resources. Fig. 7 shows a variation curve of the gain of the low-frequency radiating array 1 with or without the metal wire 3, and it can be seen that after the metal wire 3 is added, the average gain of the antenna is increased by about 0.7dBi, and the gain is obviously increased.
Referring to fig. 2, the low-frequency radiating array 1 includes a die-casting feed structure 8, a PCB coupling feed structure 7 and four PCB radiating branches 6, the lower end of the die-casting feed structure 8 is fixedly mounted on the reflective bottom plate 4, and the PCB coupling feed structure 7 and the PCB radiating branches 6 are mounted at the upper end of the die-casting feed structure 8. The PCB coupling feed structure 7 comprises a dielectric plate 16, four rectangular copper foils are respectively printed on the upper surface and the lower surface of the dielectric plate 16, and the copper foils on the upper surface and the lower surface of the dielectric plate 16 are correspondingly conducted one by one through metalized through holes 15; the four copper foils on the same surface of the dielectric plate 16 are symmetrically distributed, and four spaced gaps are formed between every two adjacent copper foils; each copper foil is etched with an open gap 17. As shown in fig. 4, the dielectric board 16 includes a first copper foil 11, a second copper foil 12, a third copper foil 13 and a fourth copper foil 14, wherein the dielectric board is rectangular, and the four copper foils are symmetrically distributed at opposite angles; exciting the high-frequency radiating oscillator 2 to generate coupling current on the PCB coupling feed structure 7 and the PCB radiating branch 6 of the low-frequency radiating oscillator 1, and the current of the part also participates in radiation and is superimposed with the field radiated by the high-frequency radiating oscillator 2, so that a high-frequency directional diagram is distorted, as shown in fig. 6; in this embodiment, at the distortion point of the high-frequency pattern, the high-frequency coupling current is mainly concentrated on the low-frequency PCB coupling feed structure 7, and the high-frequency current coupled on the low-frequency PCB radiation branch section 6 is weaker, so that an elongated open-circuit slit 17 is etched on each approximately rectangular copper foil of the PCB coupling feed structure 7, and the high-frequency pattern of the corresponding frequency band can be improved by adjusting the length of the open-circuit slit 17. The open-circuit slot 17 of this embodiment is a linear slot, or may be an L-shaped slot or a bent slot in other embodiments, and the total length of the open-circuit slot 17 is a quarter wavelength of a corresponding frequency point, and the corresponding frequency point is a frequency point where a high-frequency directional diagram is distorted due to a stronger current coupled on a PCB feed sheet; as can be seen from fig. 6, when there is no open slot 17 on the PCB coupled feeding structure 7 of the low frequency radiating array 1, the distortion of the radiation pattern of the high frequency is large, and when there is an open slot 17 on the PCB coupled feeding structure 7 of the low frequency radiating array 1, the distortion of the radiation pattern of the high frequency is small and close to the radiation pattern when only high frequency is radiated. If the high-frequency current coupled to the PCB radiation branch 6 of the low-frequency radiation array 1 is concentrated under a certain condition, it can be considered to etch a quarter-wavelength open-circuit gap on the PCB radiation branch 6.
Furthermore, one end of each of the four PCB radiation branches 6 is respectively installed on the four spacing gaps on the upper end surface of the dielectric plate 16, and the same at least one radiation piece is arranged on the upper surface and the lower surface of each of the PCB radiation branches 6, and each radiation piece is in a rectangular and/or step-shaped and/or multi-fold line-shaped structure. The PCB radiation branch 6 can couple electromagnetic waves and radiate, and the impedance characteristic of the antenna can be adjusted by adjusting the gap size and the gap length of the coupling feed structure. Referring to fig. 3, the PCB radiating branches 6 on the upper and lower surfaces have the same shape, and the radiating fins thereon may have a rectangular shape and/or a trapezoidal shape and/or a bent line. The invention uses the mode of combining the rectangular line and the bent line as the radiation sheet of the low-frequency radiation array 1, and the effective flow path of current can be increased through the bent line, thereby reducing the physical size of the radiation sheet. When the 45 + port of the low-frequency radiation array 1 is excited, the current 10 formed on the four PCB radiation branches 6 can synthesize 45 + radiation field, and similarly, when the 45-port of the low-frequency radiation array 1 is excited, the 45-radiation field can be synthesized on the four PCB radiation branches 6. The distance between the reflection bottom plate 4 and the PCB radiation branch 6 of the low-frequency radiation array 1 is about a quarter wavelength of a central frequency point.
Referring to fig. 5, the die-cast feed structure 8 includes an air microstrip line structure and at least two short-circuit metal posts 22, and the air microstrip line structure is connected with the short-circuit metal posts 22 to form a balun of the antenna. The length dimension of the two metal posts 22 is approximately one quarter wavelength of the antenna center frequency. Further, the air microstrip line structure includes a first microstrip ground 18, a second microstrip ground 20, a first microstrip feed patch 19 and a second microstrip feed patch 21, the first microstrip ground 18 and the first microstrip feed patch 19 are connected with two copper foils on the lower end face of the dielectric plate 16 through a first printed metal conductor, and the second microstrip ground 20 and the second microstrip feed patch 21 are connected with the other two copper foils on the lower end face of the dielectric plate 16 through a second printed metal conductor. Specifically, a first microstrip ground 18 and a first microstrip feed patch 19 transmit an excitation signal to a first copper foil 11 and a third copper foil 13 which are approximately rectangular through a section of printed metal conductor; the PCB radiating stub 6 is coupled to the excitation signals on the first copper foil 11 and the third copper foil 13, which are approximately rectangular, and can form a current 10, generating a radiation field of +/-45 °. And the second microstrip ground 20 and the second microstrip feed patch 21 transmit the excitation signal to the second copper foil 12 and the fourth copper foil 14, which are approximately rectangular, through a section of printed metal conductor, so that a-45 ° radiation field can be generated.
Preferably, the dielectric sheet 16 is an FR4 (a fire resistant material grade code) substrate. The support frame 5 is made of plastic and is vertically arranged on the reflection bottom plate 4.
The metal wire 3 of the embodiment is right-angled, and may be linear, circular or irregular in other embodiments; specifically, the total length of a single metal wire is 215 mm-245 mm, that is, the total length of the metal wire 3 is about half the wavelength of the lowest frequency point of the working frequency band. The shape and the placement position of the metal wire 3 are selected to improve the indexes of gain, wave width, front-to-back ratio and the like of the low-frequency array, and the cross polarization ratio is slightly poor. High frequency radiation array 2 is conventional high frequency die-casting array, and low frequency radiation array 1 nests in the positive center of high frequency radiation array 2, sets up a low frequency radiation oscillator 1 in the positive center department of four high frequency radiation oscillators 2 promptly, can reduce array antenna's space size. The parasitic radiation generated by adding four metal wires symmetrically around the array is utilized to improve the gain of the array. The influence of the low-frequency array on a high-frequency radiation directional diagram is inhibited by etching an open-circuit gap on a coupling feed sheet of the low-frequency array.
In summary, the metal wires arranged around the low-frequency antenna array of the invention play a role of a parasitic radiation antenna, and a radiation field generated by the parasitic antenna is superposed with a radiation field generated by the low-frequency array, so that under the condition of not influencing a nested layout scheme, space resources are fully utilized to improve the gain of the low-frequency antenna. An open-circuit gap etched on an approximately rectangular copper foil of PCB coupling feed can generate trap characteristics at corresponding frequency points of high frequency, so as to inhibit high-frequency electromagnetic waves, reduce coupling between high frequency and low frequency and improve a high-frequency directional diagram; and the feed and balun structure formed by the die-cast air microstrip and the short-circuit metal column is firmer, and is convenient for batch processing and production.
The present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof, and it should be understood that various changes and modifications can be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. A dual-polarized base station radiating array with high gain and high frequency notch is characterized by comprising:
a reflective backplane;
at least one low-frequency radiation oscillator fixedly arranged on the reflection bottom plate;
the four high-frequency radiation arrays are fixedly arranged on the reflection bottom plate and uniformly surround the periphery of the low-frequency radiation arrays;
at least four metal wires are respectively and independently and symmetrically erected on the supporting frames distributed around the low-frequency radiation array.
2. The dual-polarization base station radiating array with high gain and high frequency notch according to claim 1, wherein the low frequency radiating array comprises a die-cast feed structure, a PCB coupled feed structure and four PCB radiating branches, the lower end of the die-cast feed structure is fixedly installed on the reflection bottom plate, and the PCB coupled feed structure and the PCB radiating branches are installed on the upper end of the die-cast feed structure.
3. The dual-polarized base station radiating oscillator with high gain and high frequency notch according to claim 2, wherein the PCB coupling feed structure comprises a dielectric plate, four rectangular-like copper foils are printed on the upper and lower surfaces of the dielectric plate, respectively, and the copper foils on the upper and lower surfaces of the dielectric plate are conducted through metalized via holes in a one-to-one correspondence manner; the four copper foils on the same surface of the dielectric plate are symmetrically distributed, and four interval gaps are formed between every two adjacent copper foils; and an open-circuit gap is etched on each copper foil.
4. The dual-polarized base station radiating array with high gain and high frequency notch according to claim 3, wherein the open-circuit slot is a linear slot, an L-shaped slot or a bent slot, and the total length of the open-circuit slot is a quarter wavelength of a corresponding frequency point.
5. The dual-polarized base station radiating array with the high-gain and high-frequency notch according to claim 3, wherein one end of each of the four PCB radiating branches is respectively installed on the four spacing gaps on the upper end surface of the dielectric slab, the upper and lower surfaces of each PCB radiating branch are provided with at least one identical radiating sheet, and each radiating sheet is in a rectangular and/or step-shaped and/or multi-fold line-shaped structure.
6. The dual polarized base station radiating array with high gain and high frequency notch of claim 3, wherein the die cast feed structure comprises an air microstrip line structure and at least two short circuit metal posts, the air microstrip line structure and the short circuit metal posts are connected to form a balun of the antenna.
7. The dual-polarized base station radiating oscillator with high gain and high frequency notch of claim 6, wherein the air microstrip line structure comprises a first microstrip ground, a second microstrip ground, a first microstrip feed patch and a second microstrip feed patch, the first microstrip ground and the first microstrip feed patch are connected with two copper foils on the lower end face of the dielectric plate through a first printed metal conductor, and the second microstrip ground and the second microstrip feed patch are connected with the other two copper foils on the lower end face of the dielectric plate through a second printed metal conductor.
8. The dual polarized base station radiating array with high gain and high frequency notch of claim 3, wherein said dielectric board is FR4 substrate.
9. The dual polarized base station radiating array with high gain and high frequency notch as claimed in claim 1, wherein said support frame is made of plastic and is vertically installed on said reflective bottom plate.
10. The dual-polarization base station radiating array with high gain and high frequency notch of any one of claims 1 to 9, wherein the metal wires are linear or right-angled or arc-shaped or irregular; and/or
The total length of the single metal wire is 215 mm-245 mm; and/or
The high-frequency radiation array is a conventional high-frequency die-casting array, and the low-frequency radiation array is nested in the center of the high-frequency radiation array.
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| CN201911224170.7A CN110911817B (en) | 2019-12-03 | 2019-12-03 | Dual-polarization base station radiator with high gain and high frequency notch |
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| CN111290034A (en) * | 2020-03-25 | 2020-06-16 | 深圳迈睿智能科技有限公司 | High-gain microwave Doppler detection module |
| CN111883906A (en) * | 2020-08-10 | 2020-11-03 | 重庆邮电大学 | A high-frequency composite structure base station antenna loaded with artificial magnetic conductor structure reflector |
| CN112234355A (en) * | 2020-10-23 | 2021-01-15 | 华南理工大学 | A broadband dual-frequency fusion antenna array based on vertical oscillators |
| CN112290199A (en) * | 2020-09-29 | 2021-01-29 | 京信通信技术(广州)有限公司 | Antenna and low-frequency radiation unit and isolation strip thereof |
| CN112310661A (en) * | 2020-09-30 | 2021-02-02 | 武汉虹信科技发展有限责任公司 | Multi-frequency antenna array and base station system |
| CN112490651A (en) * | 2020-11-12 | 2021-03-12 | 杭州电子科技大学 | Multi-band base station scattering suppression antenna |
| WO2022237405A1 (en) * | 2021-05-14 | 2022-11-17 | 摩比天线技术（深圳）有限公司 | Low-frequency radiation unit for suppressing inter-frequency scattering, and base station antenna |
| WO2024198552A1 (en) * | 2023-03-28 | 2024-10-03 | 普罗斯通信技术（苏州）有限公司 | Radiation unit and antenna |
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| CN112310661A (en) * | 2020-09-30 | 2021-02-02 | 武汉虹信科技发展有限责任公司 | Multi-frequency antenna array and base station system |
| CN112310661B (en) * | 2020-09-30 | 2023-07-28 | 中信科移动通信技术股份有限公司 | Multi-frequency antenna array and base station system |
| CN112234355A (en) * | 2020-10-23 | 2021-01-15 | 华南理工大学 | A broadband dual-frequency fusion antenna array based on vertical oscillators |
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| WO2024198552A1 (en) * | 2023-03-28 | 2024-10-03 | 普罗斯通信技术（苏州）有限公司 | Radiation unit and antenna |
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