CN202042604U - Double-layer vertical-polarization antenna - Google Patents
Double-layer vertical-polarization antenna Download PDFInfo
- Publication number
- CN202042604U CN202042604U CN2011201231359U CN201120123135U CN202042604U CN 202042604 U CN202042604 U CN 202042604U CN 2011201231359 U CN2011201231359 U CN 2011201231359U CN 201120123135 U CN201120123135 U CN 201120123135U CN 202042604 U CN202042604 U CN 202042604U
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- Prior art keywords
- vtv
- dipole
- double
- antenna
- dipole antenna
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Abstract
The utility model discloses a double-layer vertical-polarization antenna, which is characterized by comprising two VTV dipole antenna units, four reflectors, a branch feeder cable, a power divider and a GRP (Glass Reinforced Plastic) protecting shield, wherein the double-layer vertical-polarization antenna is formed by vertically arranging the two VTV dipole antenna units; and the VTV dipole antenna units, the reflectors, the branch feeder cable and the power divider are all arranged in the GRP protecting shield. In the patent, the power divider, the branch feeder cable and a supporting rod are designed integrally; and the antenna units, the reflectors, the power divider and the branch feeder cable are arranged in the cylindrical GRP protecting shield, so that the mounting and the maintenance of the antenna can be greatly simplified, and the mounting position and the construction cost of the antenna are saved.
Description
Technical field
The utility model relates to a kind of double-deck vertical polarized antenna.
Background technology
When traditional double-deck dipole antenna unit is formed aerial array, on support bar, need plug-in a plurality of power dividers, a large amount of branch feeder line, terminal fitting when double-deck dipole antenna unit is carried out power division, hinder and influenced installation, maintenance, the maintenance of aerial array greatly.
The utility model content
Goal of the invention of the present utility model is: at the problem of above-mentioned existence, provide a kind of double-deck vertical polarized antenna; Double-deck vertical polarized antenna is characterized in that comprising two VTV dipole antenna units, four reflectors, branch feeder cable, power divider, frp protective coverboard; This bilayer vertical polarized antenna is arranged above and below by two VTV dipole antenna units and forms; Described VTV dipole antenna unit, reflector, branch feeder cable and power divider all are arranged in the described frp protective coverboard.
Its aerial array of different power grades and different antenna gains is formed different, and the double-deck vertical polarized antenna of CGOJ-VTV-U is arranged above and below by two VTV dipole antenna units and forms.
One, VTV dipole antenna unit
1, doublet unit
The VTV dipole antenna unit as shown in Figure 1, its mainly by two-layer, two show source oscillator, four average weighing apparatus/baluns, two reflecting plates and a power divider (band impedance conversion) and formed.Input signal is from the feed-in of upper and lower oscillator symmetrical centre, being divided into the two-way constant amplitude through power divider and in phase being fed to upper and lower two groups of oscillator centers, is two-way is fed to balance after the unsymmetrical current balance of balance/imbalance converter with coaxial line symmetrical dipole again with the high-frequency signal current uniform at this place.
In this transmission antenna unit, a short-circuiting device all is housed on each balance/imbalance converter, regulate the input impedance of the position adjustable antenna unit of short-circuiting device on the balance/imbalance converter; The radiating doublet feed adopts probe coupled modes, the voltage standing wave ratio of appropriate change probe length adjustable antenna unit.
The direction of antenna element active dipole is perpendicular to ground, and every layer of two oscillator are symmetrical in support bar and are positioned at the both sides of same reflecting plate.For radiation effect, two active dipoles of every layer can equivalence be the dipole of two band reflecting plates, and its horizontal directive tendency (H.D.T.) is:
D=Sin (β H * Sin φ); Wherein: β=2 π/λ, λ are operation wavelength, and φ is the angle between reflecting plate plane and the radiation direction, and H is the distance of active dipole to reflecting plate, is about λ/4, thus its half-power angle be about ± 60 °.In 90 ° and 270 ° of directions maximum is arranged, minimum is arranged in 0 ° and 180 ° of directions.
2, patent protection item
The item of present patent application protection is the VTV-U antenna dipoles; this VTV-U antenna dipoles physics and the cylindrical hollow tubular of geometry; tubulose dipole diameter phi is the half wavelength that 38mm, oscillator length are slightly less than the work centre frequency; the actual oscillator length that uses should be resonance length, general oscillator reality (resonance) length
l 0=0.95l.The direction of antenna element hollow tubular active dipole is perpendicular to ground, every layer of two oscillator are symmetrical in support bar and are positioned at the both sides of same reflecting plate, during the active dipole feed, adopt the balancedunbalanced impedance transformer to link to each other between feeder cable and active dipole, tubulose dipole material is aluminium section bar machine-shaping, dipole and impedance transformer adopt inferior arc-welding weldering knot, and dipole is formed the VTV dipole antenna unit by two built-in power splitters of support bar up and down.
Two, the integrated feed of double-deck dipole antenna unit array
1, feed method
In the double-deck vertical polarized antenna of CGOJ-VTV-U, each VTV dipole antenna unit all has the input feeding interface.Input signal is from the feed-in of upper and lower oscillator symmetrical centre, being divided into the two-way constant amplitude through power divider and in phase being fed to upper and lower two groups of oscillator centers, is two-way is fed to balance after the unsymmetrical current balance of balance/imbalance converter with coaxial line symmetrical dipole again with the high-frequency signal current uniform at this place.
Each VTV dipole antenna unit all is the antenna with capacity of working on one's own.Can form the transmitting antenna of high-gain by two-layer antenna element in vertical direction, consider the problem of filling at downwards bevel beam and zero point, and do not wait feed method, can satisfy complicated and diversified shape service area and cover in conjunction with the current phase of each layer antenna element.
When adopting the dual-layer atenna dipole to form antenna bilayer array, need double-deck dipole antenna unit is carried out feed, referring to the aerial array main feeder shown in Figure 2 and the first fraction feeder line feeding classification: main feeder is connected two power splitters of the first order, two power splitters and the Module of aerial of the first order are integrated, outer conductor and Module of aerial are welded as a whole, main feeder connects the input of two power splitters, two output ports of two power splitters connect two first fraction feeder lines, divide feeder line to draw along the Module of aerial tube wall, arrive the two built-in power splitter feeder line inputs of support bar of every layer of dipole antenna unit, the second fraction feeder line of power splitter output connects the active dipole of antenna, finishes the feed of whole two layers of dipole antenna unit active dipole.
The dipole antenna unit and the dual-layer atenna array of the band reflecting plate of present patent application protection; except that the dipole of patent protection, integrated feed; the same with widely used dipole reflecting plate antenna on the at present domestic and international radio and television engineering; has antenna gain height (four layers of quadripole plate antenna gain can be accomplished 9.5 dB); bandwidth, decimeter range allotment f
0± 50 MHz bandwidth are easy to, and the band standing internal wave is than SWR≤1.1, and the decimeter range common antenna can carry out the transmission of television of many television channels.Require the mounting means of antenna element can adopt homophase to install and the quadrature installation according to covering.It is consistent with the horizontal directivity pattern of antenna element that homophase is installed (being each antenna element active dipole direction unanimity) its horizontal directivity pattern, is applicable to the abnormity field that covering radius is different; Quadrature is installed (active dipole that is upper and lower two VTV dipole antenna units becomes 90 ° of angles in the horizontal direction), and its horizontal directive tendency (H.D.T.) is the vector superposed of adjacent two oscillator horizontal directive tendency (H.D.T.)s in each quadrant.The horizontal directivity pattern deviation in roundness of quadrature mounting means less (being similar to a circle) is suitable for omnirange and covers, the horizontal directivity pattern deviation in roundness can accomplish≤± 2dB, and install easily, characteristics such as debugging is simple, antenna efficiency height.
In sum, owing to adopted technique scheme, the beneficial effects of the utility model are:
This patent carries out integrated design with power divider, branch feeder line, the support bar of various ways, and antenna element, reflector, power divider and branch feeder line be built in the cylindrical glass steel cage, installation, the maintenance of antenna be can simplify greatly, and the installation site and the operating expenses of antenna saved.
Description of drawings
Fig. 1 is dipole antenna unit, reflecting plate and impedance conversion schematic diagram.
Fig. 2 is two layers of integrated feed schematic diagram of dipole antenna array.
Mark among the figure: 1 representative is that dipole is hollow cylinder φ=38mm; 2 representatives are that antenna element divides the feeder line input port, 3 representatives are active dipoles, 4 representatives are allotment probes, 5 representatives are short-circuiting devices, 6 representatives are balanced-to-unbalanced transformers, and 7 representatives are power splitters, and 8 representatives are two sections λ/4 impedance transformers, 9 representatives are antenna elements, and 10 representatives are dipole (resonance) length
l 0=0.95l, 11 representatives are cover protective covers, 12 representatives are reflectors, in Fig. 2, the 2-1 representative is a protective cover, and the 2-2 representative is an antenna element, the 2-2-1 representative is to place the ground floor dipole antenna unit in the protective cover to divide feeder line 1, the 2-2-2 representative is to place the second layer dipole antenna unit in the protective cover to divide feeder line 2, and the 2-3 representative is and the incorporate power divider of Module of aerial that the 2-4 representative is the antenna main feeder.
Embodiment
Below in conjunction with accompanying drawing, the utility model is done detailed explanation.
In order to make the purpose of this utility model, technical scheme and advantage clearer,, the utility model is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
Referring to the aerial array main feeder shown in Figure 2 and the first fraction feeder line feeding classification: main feeder is connected two power splitters of the first order, two power splitters and the Module of aerial of the first order are integrated, outer conductor and Module of aerial are welded as a whole, main feeder connects the input of two power splitters, two output ports of two power splitters connect two first fraction feeder lines, divide feeder line to draw along the Module of aerial tube wall, arrive the two built-in power splitter feeder line inputs of support bar of every layer of dipole antenna unit, the second fraction feeder line of this two power splitters output connects the active dipole of antenna, finishes the feed of whole two layers of dipole antenna unit active dipole.
The above only is preferred embodiment of the present utility model; not in order to restriction the utility model; all any modifications of within spirit of the present utility model and principle, being done, be equal to and replace and improvement etc., all should be included within the protection range of the present utility model.
Claims (6)
1. a double-deck vertical polarized antenna is characterized in that comprising two VTV dipole antenna units, amounts to four reflectors, branch feeder cable, power divider, frp protective coverboard; This bilayer vertical polarized antenna is arranged above and below by two described VTV dipole antenna units and forms; Described VTV dipole antenna unit, reflector, branch feeder cable and power divider all are arranged in the described frp protective coverboard.
2. double-deck vertical polarized antenna according to claim 1 is characterized in that: the composition of described VTV dipole antenna unit is to comprise that two-layer two show the built-in power divider of support bar of source oscillator, four balance/imbalance converters, two reflecting plates and the impedance conversion of a band.
3. double-deck vertical polarized antenna according to claim 2 is characterized in that: the direction of described active dipole is perpendicular to ground, and every layer of two oscillator are symmetrical in support bar and are positioned at the both sides of same reflecting plate.
4. double-deck vertical polarized antenna according to claim 1 is characterized in that: in described VTV dipole antenna unit, be provided with a short-circuiting device on each described balance/imbalance converter.
5. double-deck vertical polarized antenna according to claim 1 is characterized in that: the cylindrical hollow tubular of the physics of this VTV dipole antenna unit and geometry, this tubulose dipole diameter phi are that 38mm, oscillator length are
l 0=0.95l.
6. double-deck vertical polarized antenna according to claim 1 is characterized in that: each described VTV dipole antenna unit all is provided with the input feeding interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201231359U CN202042604U (en) | 2011-04-25 | 2011-04-25 | Double-layer vertical-polarization antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201231359U CN202042604U (en) | 2011-04-25 | 2011-04-25 | Double-layer vertical-polarization antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202042604U true CN202042604U (en) | 2011-11-16 |
Family
ID=44970030
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201231359U Expired - Lifetime CN202042604U (en) | 2011-04-25 | 2011-04-25 | Double-layer vertical-polarization antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202042604U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105337024A (en) * | 2015-10-16 | 2016-02-17 | 辽宁普天数码股份有限公司 | Vertically polarized ground television transmitting antenna based on disk oscillator |
-
2011
- 2011-04-25 CN CN2011201231359U patent/CN202042604U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105337024A (en) * | 2015-10-16 | 2016-02-17 | 辽宁普天数码股份有限公司 | Vertically polarized ground television transmitting antenna based on disk oscillator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111116 |
|
| CX01 | Expiry of patent term |