CN108539388B - Coupling oscillator, antenna and application thereof - Google Patents
Coupling oscillator, antenna and application thereof Download PDFInfo
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- CN108539388B CN108539388B CN201810138592.1A CN201810138592A CN108539388B CN 108539388 B CN108539388 B CN 108539388B CN 201810138592 A CN201810138592 A CN 201810138592A CN 108539388 B CN108539388 B CN 108539388B
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- shaped vibrator
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- reflecting plate
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- 230000008878 coupling Effects 0.000 title claims abstract description 33
- 238000010168 coupling process Methods 0.000 title claims abstract description 33
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 33
- 239000002184 metal Substances 0.000 claims abstract description 67
- 239000004020 conductor Substances 0.000 claims abstract description 24
- 230000003071 parasitic effect Effects 0.000 claims abstract description 19
- 238000004891 communication Methods 0.000 claims abstract description 12
- 230000000087 stabilizing effect Effects 0.000 claims description 3
- 230000005855 radiation Effects 0.000 abstract description 4
- 238000012360 testing method Methods 0.000 description 10
- 238000010586 diagram Methods 0.000 description 6
- 238000010295 mobile communication Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
Classifications
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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
-
- 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
-
- 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
- H01Q19/104—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 using a substantially flat reflector for deflecting the radiated beam, e.g. periscopic antennas
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
- H01Q21/08—Arrays of individually energised antenna units similarly polarised and spaced apart the units being spaced along or adjacent to a rectilinear path
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- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The application discloses a coupling oscillator, an antenna and application thereof. The coupling oscillator comprises an integrally formed H-shaped oscillator arm, four insulating support columns, four metal parasitic pieces and a coupling strip line; the two sides of the H-shaped vibrator arm are provided with radiation metal sheets which extend downwards vertically, the middle connecting arm of the H-shaped vibrator arm is provided with a bandwidth adjusting groove, and the two sides of the middle part of the middle connecting arm are respectively provided with a metal supporting conductor which extends downwards obliquely; the coupling strip line is fixedly arranged on the metal supporting conductor; the four insulating support columns are respectively arranged on four branch arms of the H-shaped vibrator arm; the metal parasitic plates are square metal plates and are respectively arranged under the four branch arms of the H-shaped vibrator arm. The coupling oscillator can obtain low-frequency ultra-wideband, improves the antenna gain, provides a new low-frequency ultra-wideband antenna for a tetra digital trunking communication system, and improves the communication capacity and the practicability of the ultra-wideband antenna.
Description
Technical Field
The present disclosure relates to the field of base station antennas, and in particular, to a coupling element, an antenna, and applications thereof.
Background
Base station antennas are indispensable devices in mobile communication network engineering. The base station antenna generally comprises: the radiation unit, the reflecting plate and the feed network. The radiating element, i.e. the vibrator, is a component for receiving or transmitting electromagnetic signals, and has the functions of guiding and amplifying electromagnetic waves, and usually one or more vibrators are mounted on a reflecting plate of a base station antenna.
The Tetra digital trunking communication system is a wireless trunking mobile communication system based on digital time division multiple access technology. Is widely used by public security departments, railways, traffic, large enterprises and other departments for commanding, dispatching, data transmission and other businesses. The main working frequency bands of the Tetra communication system are 350-380 MHz, 380-400 MHz, 410-430 MHz, 420-450 MHz, 450-470 MHz, 806-825 MHz or 851-870 MHz; the antenna generally adopts an omnidirectional antenna with a narrow band of about 20-30 MHz, and each working frequency band generally only has 2-5 MHz after being partitioned, so that the use requirement of the coverage area of multiple areas is difficult to meet. Also, the gain of an omni-directional antenna is typically low, only about 5db.
Disclosure of Invention
The purpose of the application is to provide a coupling oscillator with a novel structure, an antenna adopting the coupling oscillator and application thereof.
The application adopts the following technical scheme:
one aspect of the present application discloses a coupled vibrator comprising an integrally formed "H" shaped vibrator arm 1, four insulating support columns 21, 22, 23 and 24, four metallic parasitic sheets 31, 32, 33 and 34, and a coupled strip line 4; the two sides of the H-shaped vibrator arm 1 are provided with radiating metal sheets 111 and 112 which extend vertically downwards, the two sides respectively form the two radiating metal sheets 111 and 112, the middle connecting arm 12 of the H-shaped vibrator arm 1 is provided with a bandwidth adjusting groove 121 for broadband matching, the two sides of the middle part of the middle connecting arm 12 are respectively provided with metal supporting conductors 131 and 132 which extend downwards in an inclined manner, and the two metal supporting conductors 131 and 132 are respectively positioned at the two sides of the middle connecting arm 12 and are used for fixedly supporting the H-shaped vibrator arm 1 on a reflecting plate; the H-shaped vibrator arm 1, the radiating metal plates 111 and 112, and the metal supporting conductors 131 and 132 are integrally formed; the coupling strip line 4 is fixedly arranged on the metal supporting conductors 131 and 132, and couples the metal supporting conductors 131 and 132 on two sides, the H-shaped vibrator arm 1 and the radiating metal sheets 111 and 112 into a radiating array; the four insulating support columns 21, 22, 23 and 24 are respectively arranged on the four branch arms 141, 142, 143 and 144 of the H-shaped vibrator arm 1 and are used for fixedly supporting the H-shaped vibrator arm 1 on the reflecting plate; the metal parasitic pieces 31, 32, 33 and 34 are square metal pieces, and the metal parasitic pieces 31, 32, 33 and 34 are respectively disposed directly under the four branch arms 141, 142, 143 and 144 of the "H" type vibrator arm 1 and are parallel to the "H" type vibrator arm 1.
It should be noted that, the coupling vibrator of the present application, through the design of the structure of the "H" vibrator arm and the radiating metal plate, can obtain the low frequency ultra wideband, in one implementation of the present application, its working frequency band is 330-470 MHz, can meet the use requirement of the coverage area of multiple areas; and, by the arrangement of the metal parasitic sheet, the lobe width is reduced, so that the antenna gain reaches about 15db. In addition, the H-shaped vibrator arm, the radiating metal sheet and the metal supporting conductor are integrally formed, the structure is simple, the vibrator arm, the radiating metal sheet and the metal supporting conductor are directly formed by stamping or cutting, and the processing is convenient; greatly saves materials and production cost.
Preferably, the bandwidth adjusting groove 121 extends to the side of the radiating metal plates 111 and 112 connected to the "H" shaped vibrator arm 1, forming a side groove 122.
It should be noted that, the bandwidth adjusting slot 121 or the side slot on the connecting side of the "H" type vibrator arm and the radiating metal plate is used to match the broadband so as to achieve the required bandwidth and frequency band.
Preferably, the bandwidth adjusting groove 121 is provided with an insulating connector 123 for stabilizing the structure of the "H" type vibrator arm 1.
It should be noted that, in one implementation of the present application, the bandwidth adjusting slot extends along the middle connecting arm until the side edge where the radiating metal sheet is connected with the "H" type vibrator arm, and the whole bandwidth adjusting slot is relatively long and also in the "H" type, which affects the structural stability of the "H" type vibrator arm, so that the vibrator arm is stable, and the functions of the bandwidth adjusting slot are not affected, and therefore, the metal portions on both sides of the bandwidth adjusting slot are connected by the insulating connecting piece 123, so as to stabilize the structure of the "H" type vibrator arm 1.
The other side of the application discloses an antenna which comprises a reflecting plate, a feed network and a coupling oscillator; the H-shaped vibrator arm 1 is fixedly connected to the surface of the reflecting plate through insulating support columns 21, 22, 23 and 24 and metal support conductors 131 and 132; wherein, the metal supporting conductors 131 and 132 support the H-shaped vibrator arm 1, and the insulating supporting columns 21, 22, 23 and 24 fix the four ends of the H-shaped vibrator arm 1; the metal parasitic pieces 31, 32, 33 and 34 are fixedly mounted on the surface of the reflecting plate and are positioned between the reflecting plate and the H-shaped vibrator arm 1; the feed network is a strip line and is integrally formed with the coupling strip line 4 and mounted on the reflecting plate.
The metal parasitic plate is in lobe modulation by forming a capacitor with the "H" shaped transducer arm, so the metal parasitic plate is disposed parallel to the "H" shaped transducer arm itself and is not in electrical communication. In the coupling vibrator, a metal parasitic piece and an H-shaped vibrator arm can be connected through an insulating support column; in the antenna of the present application, the metal parasitic is directly fixedly mounted on the reflecting plate, and the structure and function are the same although the connection relationship is changed.
Preferably, the reflector plate is provided with a plurality of rectangular lobe adjusting grooves 51 and 52.
Preferably, the reflecting plate is provided with one or more coupling vibrators of the present application.
It will be appreciated that, depending on the use requirements or environment of the antenna, one or more coupling elements may be mounted on one reflecting plate, as shown in fig. 5 to 7 in the embodiment of the present application.
A further aspect of the present application discloses the use of the coupling element of the present application or the antenna of the present application in a tetra digital trunked communication system.
The coupling oscillator or the antenna using the coupling oscillator can cover a multi-area range because of low-frequency ultra-wideband, and the gain of the antenna reaches about 15db, so that the service performance of the tetra digital trunking communication system can be greatly improved. It will be appreciated that the coupled element or antenna of the present application, having a low frequency ultra wideband and a high gain, may be adapted for use with other systems or devices requiring similar functionality, and is not limited to tetra digital trunked communication systems.
The beneficial effects of this application lie in:
according to the coupling oscillator, on one hand, low-frequency ultra-wideband can be obtained and the antenna gain is greatly improved through the design of the H-shaped oscillator arm and the radiating metal sheet structure; on the other hand, the radiating metal sheet extends vertically downwards, so that the widths of the oscillator and the antenna are reduced, and the structure is smaller and more practical. The application provides a novel low-frequency ultra-wideband coupling oscillator and antenna for the tetra digital trunking communication system, and improves the communication capacity and practicability of the tetra digital trunking communication system.
Drawings
FIG. 1 is a schematic view of the structure of the antenna in an embodiment of the present application;
fig. 2 is a schematic structural diagram of an "H" shaped transducer arm, radiating metallic sheet and metallic supporting conductor of a coupled transducer in an embodiment of the present application;
FIG. 3 is a schematic diagram of the structure of an H-shaped transducer arm, radiating metallic sheet and metallic supporting conductor of a coupled transducer according to an embodiment of the present application from another view;
fig. 4 is a schematic structural view of a reflection plate portion in the embodiment of the present application;
fig. 5 is a schematic structural diagram of the inside of an antenna according to a second implementation manner in the embodiment of the present application;
fig. 6 is a schematic structural diagram of an antenna interior according to a third implementation in an embodiment of the present application;
fig. 7 is a schematic structural diagram of an antenna internal of a fourth implementation manner in an embodiment of the present application;
FIG. 8 is a graph of antenna return loss test results in an embodiment of the present application;
FIG. 9 is a horizontal plane pattern test result of a single vibrator in the embodiment of the present application;
fig. 10 is a vertical plane pattern test result of two array antennas in the embodiment of the present application;
fig. 11 is a vertical plane pattern test result of a three-array antenna in the embodiment of the present application;
fig. 12 is a vertical plane pattern test result of a four array antenna in the embodiment of the present application.
Detailed Description
The present application is described in further detail below by way of specific examples. The following examples are merely illustrative of the present application and should not be construed as limiting the present application.
Examples
The coupling vibrator of this example, as shown in fig. 1 to 3, includes an integrally formed "H" shaped vibrator arm 1, four insulating support columns 21, 22, 23 and 24, four metal parasitic pieces 31, 32, 33 and 34, and a coupling strip line 4. The two sides of the "H" shaped vibrator arm 1 have radiation metal pieces 111 and 112 extending vertically downward, and the two sides form the two radiation metal pieces 111 and 112, respectively. The middle connecting arm 12 of the H-shaped vibrator arm 1 is provided with a bandwidth adjusting groove 121 for broadband matching; the bandwidth adjusting groove 121 extends to the side edge of the radiating metal sheets 111 and 112 connected with the H-shaped vibrator arm 1 to form a side edge groove 122; and, the bandwidth adjusting groove 121 is provided with an insulating connector 123 for stabilizing the structure of the "H" shaped vibrator arm 1. The middle connecting arm 12 has metal supporting conductors 131 and 132 extending obliquely downward on both sides thereof, respectively, for fixedly supporting the "H" shaped vibrator arm 1 on the reflecting plate. The H-shaped vibrator arm 1, the radiating metal plates 111 and 112, and the metal support conductors 131 and 132 are integrally formed. The coupling strip line 4 is fixedly mounted on the metal supporting conductors 131 and 132, and couples the metal supporting conductors 131 and 132 on both sides, the "H" type vibrator arm 1 and the radiating metal plates 111 and 112 into a radiating array. Four insulating support columns 21, 22, 23 and 24 are provided on the four branch arms 141, 142, 143 and 144 of the "H" shaped vibrator arm 1, respectively, for fixedly supporting the "H" shaped vibrator arm 1 on the reflecting plate. The metal parasitic pieces 31, 32, 33 and 34 are square metal pieces, and the metal parasitic pieces 31, 32, 33 and 34 are respectively disposed directly under the four branch arms 141, 142, 143 and 144 of the "H" type vibrator arm 1 and are parallel to the "H" type vibrator arm 1.
The antenna of this example, as shown in fig. 1 and 4, includes a reflecting plate, a feed network, and a coupling element. The H-shaped vibrator arm 1 is fixedly connected to the surface of the reflecting plate through insulating support columns 21, 22, 23 and 24 and metal support conductors 131 and 132; wherein, the metal supporting conductors 131 and 132 support the H-shaped vibrator arm 1, and the insulating supporting columns 21, 22, 23 and 24 fix the four ends of the H-shaped vibrator arm 1; the metal parasitic pieces 31, 32, 33 and 34 are fixedly mounted on the surface of the reflecting plate and are positioned between the reflecting plate and the H-shaped vibrator arm 1; the feed network is a strip line and is integrally formed with the coupling strip line 4 and mounted on the reflecting plate. As shown in fig. 4, the reflecting plate is provided with a plurality of rectangular lobe adjusting grooves 51 and 52.
According to the use requirement, in other implementations of this embodiment, two or more coupling vibrators of this embodiment are respectively mounted on the reflecting plate, as shown in fig. 5 to 7. Fig. 5 is a schematic structural view of two coupled oscillators, fig. 6 is a schematic structural view of three coupled oscillators, and fig. 7 is a schematic structural view of four coupled oscillators.
The antenna of the example is tested by adopting an Agilent E5071C network analyzer, and the result shows that the return loss in 330-470 MHz is better than-16.5 db, and as shown in figure 8, the bandwidth meets the design requirement.
The antenna of this example was subjected to outdoor far field testing to test the horizontal plane pattern of a single element, and the results are shown in fig. 9 and table 1, which show that the beam width of the element of this example is about 68-76 degrees.
Table 1 results of horizontal plane lobe width test for each frequency bin
| Frequency point (MHz) | Lobe width (degree) | Frequency point (MHz) | Lobe width (degree) |
| 330 | 70.1 | 410 | 75.5 |
| 350 | 76.3 | 430 | 70.6 |
| 370 | 76.1 | 450 | 69.2 |
| 390 | 71.6 | 470 | 68.4 |
| 400 | 72.9 | \ | \ |
The antennas of this example were subjected to vertical plane pattern test, and two-array antennas, three-array antennas and four-array antennas were tested, respectively, as shown in fig. 10 to 12, and the vertical plane pattern test of two-array antennas, three-array antennas and four-array antennas was sequentially performed in fig. 10 to 12. The result shows that the vertical plane directional diagram of each frequency point meets the design requirement in the frequency range of 330-470 MHz.
The foregoing is a further detailed description of the present application in connection with the specific embodiments, and it is not intended that the practice of the present application be limited to such descriptions. It should be understood that those skilled in the art to which the present application pertains may make several simple deductions or substitutions without departing from the spirit of the present application, and all such deductions or substitutions should be considered to be within the scope of the present application.
Claims (6)
1. A coupled vibrator, characterized by: comprises an integrally formed H-shaped vibrator arm (1), insulating support columns (21, 22, 23, 24), metal parasitic sheets (31, 32, 33, 34) and a coupling strip line (4);
the two sides of the H-shaped vibrator arm (1) are provided with radiating metal sheets (111, 112) which extend vertically downwards, a bandwidth adjusting groove (121) for broadband matching is formed in a middle connecting arm (12) of the H-shaped vibrator arm (1), and metal supporting conductors (131, 132) which extend downwards in an inclined manner are respectively arranged on two sides of the middle part of the middle connecting arm (12) and are used for fixedly supporting the H-shaped vibrator arm (1) on a reflecting plate; the H-shaped vibrator arm (1), the radiating metal sheets (111, 112) and the metal supporting conductors (131, 132) are integrally formed;
the coupling strip line (4) is fixedly arranged on the metal supporting conductors (131, 132) and couples the metal supporting conductors (131, 132) on two sides, the H-shaped vibrator arm (1) and the radiating metal plates (111, 112) into a radiating array;
the insulating support columns (21, 22, 23, 24) are arranged on four branch arms (141, 142, 143, 144) of the H-shaped vibrator arm (1) and are used for fixedly supporting the H-shaped vibrator arm (1) on the reflecting plate;
the metal parasitic pieces (31, 32, 33, 34) are square metal pieces, and the metal parasitic pieces (31, 32, 33, 34) are respectively arranged right below four branch arms (141, 142, 143, 144) of the H-shaped vibrator arm (1) and are parallel to the H-shaped vibrator arm (1);
the bandwidth adjusting groove (121) extends to the side edge of the radiating metal sheets (111, 112) connected with the H-shaped vibrator arm (1) to form a side edge groove (122).
2. The coupled resonator according to claim 1, characterized in that: an insulating connecting piece (123) is arranged on the bandwidth adjusting groove (121) and used for stabilizing the structure of the H-shaped vibrator arm (1).
3. An antenna comprising a reflecting plate, a feed network and the coupling element of claim 1 or 2; the H-shaped vibrator arm (1) is fixedly connected to the surface of the reflecting plate through the insulating support columns (21, 22, 23 and 24) and the metal support conductors (131 and 132); the metal parasitic pieces (31, 32, 33, 34) are fixedly arranged on the surface of the reflecting plate and are positioned between the reflecting plate and the H-shaped vibrator arm (1); the feed network is a strip line, is integrally formed with the coupling strip line (4), and is mounted on the reflecting plate.
4. An antenna according to claim 3, characterized in that: a plurality of rectangular lobe adjusting grooves (51, 52) are formed in the reflecting plate.
5. An antenna according to claim 3 or 4, characterized in that: one or more coupling vibrators are mounted on the reflecting plate.
6. Use of a coupled element according to claim 1 or 2 or an antenna according to any of claims 3-5 in a tetra digital trunked communication system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810138592.1A CN108539388B (en) | 2018-02-10 | 2018-02-10 | Coupling oscillator, antenna and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810138592.1A CN108539388B (en) | 2018-02-10 | 2018-02-10 | Coupling oscillator, antenna and application thereof |
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| Publication Number | Publication Date |
|---|---|
| CN108539388A CN108539388A (en) | 2018-09-14 |
| CN108539388B true CN108539388B (en) | 2023-12-29 |
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| CN201810138592.1A Active CN108539388B (en) | 2018-02-10 | 2018-02-10 | Coupling oscillator, antenna and application thereof |
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