CN113036432A - Pilot frequency filtering antenna, manufacturing method and application of pilot frequency filtering antenna - Google Patents
Pilot frequency filtering antenna, manufacturing method and application of pilot frequency filtering antenna Download PDFInfo
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- CN113036432A CN113036432A CN202110261160.1A CN202110261160A CN113036432A CN 113036432 A CN113036432 A CN 113036432A CN 202110261160 A CN202110261160 A CN 202110261160A CN 113036432 A CN113036432 A CN 113036432A
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- antenna
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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
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/27—Adaptation for use in or on movable bodies
- H01Q1/28—Adaptation for use in or on aircraft, missiles, satellites, or balloons
- H01Q1/285—Aircraft wire antennas
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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
- H01Q1/48—Earthing means; Earth screens; Counterpoises
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/24—Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction
- H01Q21/26—Turnstile or like antennas comprising arrangements of three or more elongated elements disposed radially and symmetrically in a horizontal plane about a common centre
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/20—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements characterised by the operating wavebands
- H01Q5/28—Arrangements for establishing polarisation or beam width over two or more different wavebands
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/50—Feeding or matching arrangements for broad-band or multi-band operation
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- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Remote Sensing (AREA)
- Physics & Mathematics (AREA)
- Astronomy & Astrophysics (AREA)
- General Physics & Mathematics (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The invention is suitable for the technical field of antennas, and provides a pilot frequency filter antenna, a manufacturing method and application of the pilot frequency filter antenna, wherein the pilot frequency filter antenna comprises an antenna floor, and the pilot frequency filter antenna also comprises: the transmission network is arranged on one side of the antenna floor; the antenna radiator is arranged on one side of the transmission network, which is far away from the antenna floor, and is used for generating a radiation zero point at a low-frequency sideband of a working frequency band; through directly being connected under the effect of air medium between with transmission network and the antenna floor, adopt panel beating technology integration shaping through transmission network inside, use the air to be the dielectric coupling through with transmission network and antenna radiation body, this antenna structure controls conveniently, when guaranteeing that multifrequency system fuses, through the processing of metal air stripline structure replaced printed circuit board, the cost is reduced, and adopt panel beating technology to connect fixedly, the degree of difficulty of production and processing has also been dwindled simultaneously, the production efficiency is improved, can realize extensive production and use.
Description
Technical Field
The invention belongs to the technical field of antennas, and particularly relates to a pilot frequency filter antenna, a manufacturing method of the pilot frequency filter antenna and application of the pilot frequency filter antenna.
Background
The wireless access side of the existing base station faces the challenge of coexistence of multi-system multi-band (2G/3G/4G/5G) subsystems, and the antenna system of the base station is forced to develop towards the direction of miniaturization, low power consumption and multi-band. In a limited space, antenna subsystems of different frequency bands are mutually coupled to cause the radiation characteristics of the antenna array to be distorted;
the existing antenna array decoupling integrated with a multi-frequency system generally adopts an external duplexer to realize dual-frequency performance, the port isolation between high and low frequency sub-arrays depends on the filtering effect of the duplexer, but the connection loss between the duplexer and the antenna array inevitably affects the radiation gain of the antenna array, the radiation of the filtering antenna outside a working frequency band is effectively inhibited due to certain filtering radiation performance of the filtering antenna, the radiation is efficiently radiated in the working frequency band, and the filtering antenna is adopted as an antenna unit of the multi-frequency array without the duplexer;
the Printed Circuit Board (PCB) adopted in the existing filter antenna has higher cost, and the transmission network and the antenna radiator are usually fixed by adopting a welding mode, so that the production is more complex, the production cost is easily increased, and the wide production and application are difficult.
Disclosure of Invention
Embodiments of the present invention provide a pilot frequency filtering antenna, a method for manufacturing the pilot frequency filtering antenna, and an application thereof, which are intended to solve the problems in the background art.
The embodiment of the present invention is implemented as such, and a different-frequency filtering antenna includes an antenna floor, and the different-frequency filtering antenna further includes:
the transmission network is arranged on one side of the antenna floor, the transmission network is connected with the antenna floor through an air medium, the transmission network is integrally formed inside through a sheet metal process, and the transmission network is used for transmitting external signal energy and inhibiting antenna radiation in a high-frequency band;
the antenna radiator is arranged on one side, far away from the antenna floor, of the transmission network, the antenna radiator is coupled with the transmission network through an air medium, and the antenna radiator is used for generating a radiation zero point at a low-frequency sideband of a working frequency band.
Another objective of an embodiment of the present invention is to provide a method for manufacturing a different-frequency filtering antenna, where the method for manufacturing a different-frequency filtering antenna includes the following steps: the transmission network is connected with the antenna floor under the action of an air medium, so that the transmission network receives external signal energy for transmission and inhibits the radiation of the antenna in a high-frequency band, the inside of the transmission network is integrally formed by adopting a sheet metal process, the transmission network is coupled with the antenna radiator by taking air as a medium, and the antenna radiator generates a radiation zero point at a low-frequency side band of a working frequency band.
Another objective of the present invention is to provide an application of the above method for manufacturing an inter-frequency filtering antenna in a communication base station.
Compared with the prior art, the technical scheme provided by the embodiment of the invention has the following technical effects:
the different-frequency filtering antenna provided by the embodiment of the invention has the advantages that the transmission network is directly connected with the antenna floor under the action of the air medium to form the air strip structure, the transmission network is enabled to inhibit the radiation of the antenna in a high-frequency band while receiving external signal energy for transmission, the inside of the transmission network is integrally formed by adopting the sheet metal process, then the transmission network is enabled to be free from welding with the antenna radiator, the air medium is adopted for coupling, the antenna generates the radiation zero point at the low-frequency band of the working frequency band, the antenna structure is convenient and fast to operate, the multi-frequency system is ensured to be fused, meanwhile, the processing of a printed circuit board is replaced by the metal air strip structure, the cost is reduced, the sheet metal process is adopted for connection and fixation, the difficulty of production and processing is reduced, and the production efficiency is improved, can realize wide production and use.
Drawings
Fig. 1 is a perspective structural view of an inter-frequency filtering antenna according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a three-dimensional connection structure of the balun and the resonant ring in FIG. 1;
fig. 3 is a schematic structural diagram of the antenna radiator in fig. 1;
fig. 4 is a schematic perspective view of the connection structure between the transmission network and the antenna floor in fig. 1;
fig. 5 is a graph illustrating gain comparison between a transmission network provided by an embodiment of the present invention and a conventional antenna;
fig. 6 is a graph illustrating a gain comparison between an inter-frequency filtering antenna according to an embodiment of the present invention and a conventional antenna.
In the drawings: 1-balun; 2-a resonant ring; 3-a radiating element; 4-a parasitic element; 5-a transmission network; 6-antenna floor; 7-feeding network.
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.
In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that variations and modifications can be made by persons skilled in the art without departing from the spirit of the invention. All falling within the scope of the present invention. In order to make the technical solution of the present invention clearer, process steps and device structures well known in the art are omitted here. It should be understood that like reference numerals refer to like elements throughout. Further, various elements and regions in the drawings are schematically illustrated. Accordingly, the concepts of the present invention are not limited to the relative sizes or spacings shown in the figures.
Specific implementations of the present invention are described in detail below with reference to specific embodiments.
As shown in fig. 1, a structure diagram of an inter-frequency filtering antenna provided in an embodiment of the present invention includes:
a pilot frequency filtering antenna, comprising an antenna floor 6, the pilot frequency filtering antenna further comprising:
the transmission network 5 is arranged on one side of the antenna floor 6, the transmission network 5 is connected with the antenna floor 6 through an air medium, and the transmission network 5 is used for transmitting external signal energy and inhibiting antenna radiation in a high-frequency band;
the antenna radiator is arranged on one side, far away from the antenna floor 6, of the transmission network 5, connected with the transmission network 5 through a sheet metal process and used for generating a radiation zero point at a low-frequency sideband of a working frequency band;
in the embodiment of the invention, the transmission network 5 and the antenna floor 6 are directly connected under the action of an air medium to form an air strip line structure, so that the transmission network 5 inhibits the radiation of an antenna in a high-frequency band while receiving external signal energy for transmission, the transmission network 5 is integrally molded by adopting a sheet metal process, the transmission network 5 and the antenna radiator are not welded, the air medium is used for coupling, the antenna radiator generates a radiation zero point at a low-frequency band of a working frequency band, the antenna structure is convenient and fast to operate, the multi-frequency system is ensured to be fused, meanwhile, the processing of a Printed Circuit Board (PCB) is replaced by the metal air strip line structure, the cost is reduced, the sheet metal process is used for connection and fixation, and the difficulty of production and processing is reduced, the production efficiency is improved, and the wide production and use can be realized.
As shown in fig. 2, as a preferred embodiment of the present invention, the transmission network 5 includes a balun 1 and a feed network 7, the balun 1 is disposed on one side of the antenna substrate 6, the feed network 7 is disposed between the antenna floor 6 and the balun 1, the feed network 7 and the balun 1 are integrally formed by a sheet metal process, a resonant ring 2 is disposed on a side of the balun 1, and the resonant ring 2 is connected to the balun 1;
the resonance ring 2 is connected with the balun 1, so that the antenna can inhibit antenna radiation in a high-frequency band and cannot be effectively excited at a corresponding frequency, and an effective radiation zero point is generated;
the balun 1 is preferably provided with four groups of the balun 1, the four groups of the balun 1 can be selected according to requirements, the four groups of the balun 1 are symmetrically arranged, the dipole antenna belongs to a balanced antenna, the coaxial cable belongs to an unbalanced transmission line, and if the dipole antenna belongs to the balanced antenna and the coaxial cable is directly connected, high-frequency current flows through the outer skin of the coaxial cable, so that the radiation of the antenna is influenced, and the balun is added between the antenna and the ground;
the feed network 7 is used for feeding an antenna and transmitting an electromagnetic wave signal to the antenna radiator through the balun 1;
the resonant ring 2 is an open resonant ring, and can be selected according to requirements, and the resonant ring 2 is made of a magnetic metamaterial; the magnetic permeability can be effectively changed by a pair of concentric opening resonance rings with sub-wavelength sizes; and a capacitor is formed at the opening, and charges can be accumulated at two ends, so that the resonant ring 2 and the balun 1 are combined to form a band-stop parasitic structure, the antenna is enabled to inhibit the radiation of the antenna in a high-frequency band and cannot be effectively excited at a corresponding frequency, and an effective radiation zero point is generated.
As shown in fig. 5, as another preferred embodiment of the present invention, a comparison of gain curves of the antenna balun using the resonant ring and a conventional antenna shows that the antenna radiator can exhibit a filtering characteristic at a frequency point of 4.2GHz, and gain suppression levels are 20.6dB respectively.
As shown in fig. 2, as another preferred embodiment of the present invention, the shape of the resonance ring 2 is rectangular;
the size of the resonance ring 2 can be changed correspondingly, the frequency of an effective radiation zero generated by the antenna radiator is in a linear inverse proportion relation with the length of the loading branch or the coupled ring resonator, and the frequency of a radiation suppression zero can be controlled by controlling the size of the open resonance rectangular ring.
As shown in fig. 3, as another preferred embodiment of the present invention, the antenna radiator includes a radiation unit 3, the radiation unit 3 is disposed on a side of the transmission network 5 away from the antenna substrate 6, parasitic units 4 are symmetrically disposed on two sides of the radiation unit 3, and the parasitic units 4 are connected to the radiation unit 3;
the radiating element 3 is connected with the parasitic element 4 to form a resonator, so that a radiating zero point is generated at a low-frequency sideband of an operating frequency band;
a radiation unit 3, the radiation unit 3 being a unit constituting a basic structure of the antenna, which can effectively radiate or receive radio waves; the shape of the radiation unit 3 is preferably a cross shape, and can also be selected according to requirements, and parasitic units 4 are arranged in gaps of included angles of four sides of the radiation unit 3;
a parasitic element 4, wherein the parasitic element 4 is preferably a closed triangle, and can also be selected according to requirements, one corner of the parasitic element 4 is connected with the intersection angle of the radiating element 3, and the parasitic element 4 is connected with the radiating element 3 to form a resonator;
the resonator is an electronic element generating resonant frequency, has the function of generating frequency, and has the characteristics of stability and good anti-interference performance; the resonator mainly plays a role in frequency control, namely, a certain (to be called a certain section) frequency signal passes through the resonator, and other frequency signals are blocked, so that the purpose of selecting the resonance is achieved, when the frequency of the signal is equal to the natural frequency of the resonator, the signal smoothly passes through the resonator just like a small resistor (or a conducting wire), and when the frequency far away from the natural resonant frequency tries to pass through the resonator just like a large impedance; the resonator generates a radiation zero at a low-frequency sideband of an operating frequency band when the antenna is in normal operation.
As shown in fig. 6, as another preferred embodiment of the present invention, it can be seen from the gain comparison curves of the pilot frequency filtering antenna and the conventional antenna that the filtering characteristics are exhibited at the frequency points of 2.8GHz and 4.1GHz, and the gain suppression appears outside the 3.5GHz working frequency band, and the gain suppression levels are 20.5dB and 10.9dB, respectively.
As shown in fig. 1, as another preferred embodiment of the present invention, the antenna floor 6, the transmission network 5 and the antenna radiator are made of metal;
the transmission network 5, the antenna floor 6 and the antenna radiator are all made of metal materials and can be made of copper, iron, aluminum and the like, the antenna floor 6 is preferably made of aluminum, grounding is guaranteed, meanwhile, electromagnetic waves can be reflected, and signal interference is reduced.
As another preferred embodiment of the present invention, as shown in fig. 1, the sheet metal process includes at least one of folding, splicing, and forming;
the transmission network 5 adopts a metal air strip line structure, the antenna radiator is also of a metal structure, the transmission network 5 and the antenna radiator can be processed by adopting a metal plate technology and integrally formed, and are connected after at least one method of folding, splicing and forming, so that a welding method in the conventional design is omitted, the production is simpler, and the cost is reduced.
As shown in fig. 1 to 6, an embodiment of the present invention further provides a method for manufacturing a different-frequency filtering antenna, where the method for manufacturing a different-frequency filtering antenna further includes the following steps: the transmission network 5 is connected with the antenna substrate 6 under the action of an air medium, so that the transmission network 5 receives external signal energy for transmission and inhibits the radiation of an antenna in a high-frequency band, and then the transmission network 5 is connected with the antenna radiator by adopting a sheet metal process, so that the antenna radiator generates a radiation zero point at a low-frequency sideband of a working frequency band;
in the embodiment of the present invention, the method for manufacturing the different-frequency filtering antenna includes the following steps:
step 1: setting the size of the resonance ring 2 according to the frequency of the radiation suppression zero point;
step 2: connecting the resonance ring 2 with the balun 1;
and step 3: connecting the transmission network 5 with the antenna floor 6 through an air medium;
and 4, step 4: forming an antenna radiator 3 by connecting the parasitic element 4 with the radiating element 3 to form a resonator;
and 5: the antenna radiator 3 is connected with the transmission network 5 by adopting a metal plate process.
In another embodiment of the present invention, a specific embodiment is provided:
in the communication base station, the radiation outside the working frequency band is effectively inhibited through the filtering radiation performance generated by the different-frequency filtering antenna, the efficient radiation is performed in the working frequency band, the use of a duplexer is reduced, external signal energy is received through the transmission network 5 to be transmitted, the radiation of the antenna is inhibited in a high-frequency band, meanwhile, the radiation zero point is generated at the low-frequency side band of the working frequency band by the antenna radiation body, the radiation of the multi-band antenna is subjected to interleaving arrangement, and the coexistence of multi-system multi-band subsystems is realized.
The invention provides a different-frequency filter antenna in the above embodiment, and provides a method for manufacturing and application of a different-frequency filter antenna based on the different-frequency filter antenna, wherein an air strip structure is formed by directly connecting the transmission network 5 and the antenna floor 6 under the action of an air medium, so that the transmission network 5 can inhibit the radiation of the antenna in a high-frequency band while receiving external signal energy for transmission, the transmission network 5 is integrally formed by adopting a sheet metal process, the transmission network 5 and the antenna radiator are not welded, the antenna radiator is coupled by adopting the air medium, so that the antenna radiator generates a radiation zero point at a low-frequency side band of a working frequency band, the antenna structure is convenient to control, the multi-frequency system is ensured to be fused, and meanwhile, the Printed Circuit Board (PCB) processing is replaced by the metal air strip structure, the cost is reduced, the sheet metal process is adopted for connection and fixation, the difficulty of production and processing is reduced, the production efficiency is improved, and wide production and use can be realized.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
In addition, the technical solutions of the present application are not limited to the above-described embodiments, and those skilled in the art should take the description as a whole, and the technical solutions in the embodiments may be appropriately combined, so that other embodiments that can be understood by those skilled in the art may be formed.
Claims (10)
1. A pilot frequency filtering antenna, includes the antenna floor, its characterized in that, pilot frequency filtering antenna still includes:
the transmission network is arranged on one side of the antenna floor, the transmission network is connected with the antenna floor through an air medium, the transmission network is integrally formed inside through a sheet metal process, and the transmission network is used for transmitting external signal energy and inhibiting antenna radiation in a high-frequency band;
the antenna radiator is arranged on one side, far away from the antenna floor, of the transmission network, the antenna radiator is coupled with the transmission network through an air medium, and the antenna radiator is used for generating a radiation zero point at a low-frequency sideband of a working frequency band.
2. The different-frequency filtering antenna according to claim 1, wherein the transmission network comprises a balun and a feed network, the balun is arranged on one side of the antenna floor, the feed network is arranged between the antenna floor and the balun, the balun and the feed network are integrally formed by a sheet metal process, a resonant ring is arranged on a side of the balun, and the resonant ring is connected with the balun.
3. The antenna of claim 2, wherein the resonant ring has an opening on a side thereof adjacent to the balun.
4. The antenna of claim 2, wherein the shape of the resonant loop is rectangular.
5. The antenna according to claim 1, wherein the antenna radiator includes a radiating element, the radiating element is disposed on a side of the transmission network away from the antenna floor, parasitic elements are symmetrically disposed on two sides of the radiating element, and the parasitic elements are connected to the radiating element.
6. The antenna of claim 5, wherein the parasitic element is triangular in shape.
7. The antenna of claim 1, wherein the antenna ground, the transmission network and the antenna radiator are made of metal.
8. The different-frequency filtering antenna according to claim 1, wherein the sheet metal process comprises at least one of folding, splicing and forming.
9. A method for manufacturing a different-frequency filtering antenna, wherein the different-frequency filtering antenna according to any one of claims 1 to 8 is adopted, and the method for manufacturing the different-frequency filtering antenna comprises the following steps: the transmission network is connected with the antenna floor under the action of an air medium, so that the transmission network receives external signal energy for transmission and inhibits the radiation of the antenna in a high-frequency band, the inside of the transmission network is integrally formed by adopting a sheet metal process, the transmission network is coupled with the antenna radiator by taking air as a medium, and the antenna radiator generates a radiation zero point at a low-frequency side band of a working frequency band.
10. Use of a method of manufacturing a heterofrequency filtered antenna according to claim 9 in a communication base station.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110261160.1A CN113036432A (en) | 2021-03-10 | 2021-03-10 | Pilot frequency filtering antenna, manufacturing method and application of pilot frequency filtering antenna |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110261160.1A CN113036432A (en) | 2021-03-10 | 2021-03-10 | Pilot frequency filtering antenna, manufacturing method and application of pilot frequency filtering antenna |
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| CN113036432A true CN113036432A (en) | 2021-06-25 |
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| CN202110261160.1A Pending CN113036432A (en) | 2021-03-10 | 2021-03-10 | Pilot frequency filtering antenna, manufacturing method and application of pilot frequency filtering antenna |
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| WO2023016272A1 (en) * | 2021-08-10 | 2023-02-16 | 华为技术有限公司 | Antenna apparatus and communication device |
| WO2023155970A1 (en) * | 2022-02-15 | 2023-08-24 | Telefonaktiebolaget Lm Ericsson (Publ) | End-fed antenna |
| WO2023155971A1 (en) * | 2022-02-15 | 2023-08-24 | Telefonaktiebolaget Lm Ericsson (Publ) | Antenna system with low-pass filter |
| WO2024199051A1 (en) * | 2023-03-28 | 2024-10-03 | 中兴通讯股份有限公司 | Radio frequency front-end filtering processing device and base station |
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| CN112768929A (en) * | 2020-12-25 | 2021-05-07 | 东莞市振亮精密科技有限公司 | 5G panel beating shaping dual-band filtering antenna |
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| CN201812933U (en) * | 2010-07-19 | 2011-04-27 | 海宁胜百信息科技有限公司 | Integrated filter antenna |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2023016272A1 (en) * | 2021-08-10 | 2023-02-16 | 华为技术有限公司 | Antenna apparatus and communication device |
| WO2023155970A1 (en) * | 2022-02-15 | 2023-08-24 | Telefonaktiebolaget Lm Ericsson (Publ) | End-fed antenna |
| WO2023155971A1 (en) * | 2022-02-15 | 2023-08-24 | Telefonaktiebolaget Lm Ericsson (Publ) | Antenna system with low-pass filter |
| WO2024199051A1 (en) * | 2023-03-28 | 2024-10-03 | 中兴通讯股份有限公司 | Radio frequency front-end filtering processing device and base station |
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