CN105186109A - E-type patch based horizontally-polarized digital television transmitting antenna array - Google Patents
E-type patch based horizontally-polarized digital television transmitting antenna array Download PDFInfo
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- CN105186109A CN105186109A CN201510631877.5A CN201510631877A CN105186109A CN 105186109 A CN105186109 A CN 105186109A CN 201510631877 A CN201510631877 A CN 201510631877A CN 105186109 A CN105186109 A CN 105186109A
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Abstract
The invention relates to an E-type patch based horizontally-polarized digital television transmitting antenna array. The transmitting antenna array comprises a horizontally-polarized antenna unit, an equivalent-power-division in-phase feed network, a patch connector and an input connector; the horizontally-polarized antenna unit is formed by two laminated patch radiation units in a flushed in-phase arrangement; the laminated patch radiation unit comprises a rectangular parasitic patch top layer, a rectangular parasitic patch second layer, an E-type patch and a floor plate; the equivalent-power-division in-phase feed network is positioned between the E-type patch and the floor plate, and connected with the E-type patch through the patch connector; and an outer conductor of the input connector is fixed in the floor plate while the inner conductor of the input connector penetrates through the floor plate to be connected with the equivalent-power-division in-phase feed network. By adoption of the laminated structure and the E-type patch, the impendence bandwidth and the bearing power of the antenna are improved so as to satisfy the operating requirements of ground television broadcasting transmitting systems; and the E-type patch based horizontally-polarized digital television transmitting antenna array has the characteristics of wide working frequency bandwidth, high gain, low standing-wave ratio, high bearing power, simple process, convenient debugging and the like.
Description
Technical field
The present invention relates to a kind of antenna for ground digital television transmitting system, particularly relate to a kind of horizontal polarization group array antenna based on E type paster being applicable to the terrestrial television emission system of decimeter wave wave band.
Background technology
Antenna is all indispensable important front-end devices of any radio system, and its performance quality directly affects the overall performance of radio system.Along with the development of radiotechnics, many communication equipments will be eliminated, and its function will be replaced by various software, but the function of antenna is software cannot realize, and therefore, even in the software radio epoch, antenna is also absolutely necessary.Adopt high-quality antenna to set up a desirable micro television transposer station, except the high-quality TV differential relay of needs, launching and receiving antenna of good performance is also most important, and it can effectively utilize the power of transmitter and the requirement reduced receiver.Along with the continuous quickening of global television digitlization and mobile paces, China's Digital Television was developing rapidly in recent years, and digital television business has been opened in many large-and-medium size cities.In the revolution of this broadcast, television digitization and mobile, the launching and receiving antenna that research and development adapt to high-performance mobile Digital Television is the important step improving terrestrial DTV coverage rate.
Along with the development of terrestrial DTV, broadband, high-power, high-gain, low cost transmitting antenna are more suitable for ground digital television transmitting system.At present, the transmitting antenna for China's terrestrial digital television system has slot antenna, batwing antenna etc., but the processing of these antenna and debug all more complicated, cost is higher, and application is restricted.Because paster antenna has little, lightweight, the low section of volume, low cost and the easy advantage such as conformal, be used widely.But the topmost shortcoming of paster antenna is narrow bandwidth and to bear power little, the bandwidth that typical paster antenna standing-wave ratio is less than 1.1 only have percent zero point a few magnitude, and feeding network is made up of microstrip power divider mostly, therefore bears power little.Based on above reason, paster antenna fails to be applied in broadcast television emission system.So the impedance bandwidth of paster antenna must be improved and bear power, the requirement of ground digital television broadcast emission system could be met.
In view of this, a kind of novel working band of necessary proposition is wide, gain is high, bear that power is large, cost is low, be convenient to the television transmitting antenna processed, solves prior art Problems existing.
Summary of the invention
The invention provides a kind of horizontal polarization digital television transmitting antenna battle array based on E type paster, by adopting laminated construction and E type paster improve the impedance bandwidth of antenna and bear power, thus the instructions for use of surface TV broadcast transmission system contentedly; The features such as it is wide that this antenna has working band, and gain is high, and input vswr is little, bears power large, and processing is simple, and debugging is convenient, are applicable to the terrestrial television system of transmit antennas of decimeter wave wave band; And it is with low cost, be convenient to produce, be suitable for promoting.
In order to achieve the above object, the present invention realizes by the following technical solutions:
Based on a horizontal polarization digital television transmitting antenna battle array for E type paster, comprise horizontally-polarized antenna unit, etc. merit divide homophase feeding network, paster connector and input connector; Described horizontally-polarized antenna unit flushes homophase arrangement by 2 stacked patch radiating elements and forms, and each stacked patch radiating element is made up of the top layer rectangle parasitic patch set gradually from top to bottom, second layer rectangle parasitic patch, E type paster and strata plate; Divide between the E type paster of homophase feeding network at stacked patch radiating element and strata plate etc. merit, be connected with E type paster by paster connector; E type paster is by paster connector feed, and second layer rectangle parasitic patch is by E type paster couple feed, and top layer rectangle parasitic patch is by second layer rectangle parasitic patch couple feed; The outer conductor of input connector is fixed on strata plate, inner wire earth penetrating plate with etc. merit divide homophase feeding network to be connected.
Described E type paster cuts out two symmetrical rectangular apertures by common rectangular patch, and middle wing cut-away is divided and obtain.
Be fixedly connected with by the screw of Teflon material between described top layer rectangle parasitic patch, second layer rectangle parasitic patch, E type paster, strata plate.
Weld metal packing ring on the inner wire of described input connector.
Described paster connector can divide movement at the intermediate wing portion of E type paster, to regulate operating frequency and impedance matching.
Described input connector adopts L27 type joint.
Compared with prior art, the invention has the beneficial effects as follows:
By adopting laminated construction and E type paster improve the impedance bandwidth of antenna and bear power, thus the instructions for use of surface TV broadcast transmission system contentedly; The features such as it is wide that this antenna has working band, and gain is high, and input vswr is little, bears power large, and processing is simple, and debugging is convenient, are applicable to the terrestrial television system of transmit antennas of decimeter wave wave band; And it is with low cost, be convenient to produce, be suitable for promoting.
Accompanying drawing explanation
Fig. 1 is plan structure figure of the present invention.
Fig. 2 is side-looking structure chart of the present invention.
Fig. 3 is the voltage standing wave ratio figure of the embodiment of the present invention;
Fig. 4 is the radiation pattern of the embodiment of the present invention.
In figure: 1. the merit such as the middle wing 14. strata plate 2. stacked patch radiating element 2 3. in gap, stacked patch radiating element 1 top layer rectangle parasitic patch 12. second layer rectangle parasitic patch 13.E type paster 131. gap 12 133. divides homophase feeding network 4. paster connector 5. input connector 51. outer conductor 52. inner wire 6. metal washer 7. screw
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described further:
Seeing Fig. 1-Fig. 2, is structural representation of the present invention.A kind of horizontal polarization digital television transmitting antenna battle array based on E type paster of the present invention, comprise horizontally-polarized antenna unit, etc. merit divide homophase feeding network 3, paster connector 4 and input connector 5; Described horizontally-polarized antenna unit flushes homophase arrangement by 2 stacked patch radiating elements 1,2 and forms, and each stacked patch radiating element 1/2 is made up of the top layer rectangle parasitic patch 11 set gradually from top to bottom, second layer rectangle parasitic patch 12, E type paster 13 and strata plate 14; Divide between the E type paster 13 of homophase feeding network 3 at stacked patch radiating element 1,2 and strata plate 14 etc. merit, be connected with E type paster 13 by paster connector 4; E type paster 13 is by paster connector 4 feed, and second layer rectangle parasitic patch 12 is by E type paster 13 couple feed, and top layer rectangle parasitic patch 11 is by second layer rectangle parasitic patch 12 couple feed; The outer conductor 51 of input connector 5 is fixed on strata plate 14, inner wire 52 earth penetrating plate 14 with etc. merit divide homophase feeding network 3 to be connected.
Described E type paster 13 cuts out two symmetrical rectangular apertures 131,132 by common rectangular patch, and the middle wing 133 cut-away is divided and obtain.
Be fixedly connected with by the screw 7 of Teflon material between described top layer rectangle parasitic patch 11, second layer rectangle parasitic patch 12, E type paster 13, strata plate 14.
Weld metal packing ring 6 on the inner wire 52 of described input connector 5.
Described paster connector 4 can move in the middle wing 133 part of E type paster 13, to regulate operating frequency and impedance matching.
Described input connector 5 adopts L27 type joint.
Adopt the structure of stacked patch radiating element 1,2, the impedance bandwidth of common paster antenna can be improved; In order to expand impedance bandwidth further, adopt E type paster 13, at the mid portion of E type paster 13, electric current is consistent with ordinary rectangular paster, is equivalent to simple LC resonant tank, and in the marginal portion of E type paster 13, electric current flows through around gap 131,132, current path length increases, and is equivalent to an additional series inductance, thus resonance frequency is reduced.Owing to adopting laminated construction, and introduce E type paster 13, reflection coefficient curve presents multi-frequency Characteristic; Change the position in two gaps 131,132, resonance frequency and impedance bandwidth that the length of size and the middle wing 133 can regulate antenna.
The size of strata plate 14 is determined by the size of E type paster 13 and array element distance, aperture field due to radiation concentrates in region very little near radiating side, strata plate 14 too much stretches out and not to have a significant effect to field distribution, when comparatively low-frequency range works, have in mind from reduction antenna weights and erection space with reducing costs, strata plate 14 size should be little as far as possible.
Horizontally-polarized antenna unit flushes homophase by two stacked patch radiating elements 1,2 and arranges, and two stacked patch radiating elements 1,2 share a strata plate 14, can save processing cost like this, Simplified flowsheet.
Divide homophase feeding network 3 between E type paster 13 and strata plate 14 etc. merit, " U " shape symmetrically, the microstrip line construction that employing is medium with air, characteristic impedance is 100 ohm, what increase laminated patch antenna array bears power, and easy to process, with low cost.
Paster connector 4 for connect E type paster 13 and etc. merit divide homophase feeding network 3, feed is carried out to E type paster 13, by regulating the size of paster connector 4 and the position of its wing 133 part in the middle of E type paster, impedance matching and the bandwidth of antenna can be regulated easily.
The merits such as input connector 5 is positioned at divide the centre position of homophase feeding network 3, ensure to input antenna array constant amplitude homophase.Input connector 5 adopts high-power type L27 type connector, and outer conductor 51 connects with strata plate 14, inner wire 52 with etc. merit divide homophase feeding network 3 to be connected.
By adjustment the present invention each portion size, make resonance frequency suitably close, just can improve the overall work bandwidth of antenna.In order to expand bandwidth, the filled media between each layer of stacked patch radiating element 1,2 is air, is ensureing to expand impedance bandwidth to greatest extent under higher operating efficiency.In order to improve the frequency bandwidth characteristics of input impedance, improve the evenness of input impedance in laminated patch antenna working band, the inner wire 52 of input connector 5 welds a metal washer 6, compensate the inductance introduced due to the increase of inner wire length, expand the bandwidth of antenna further, improve the gain of antenna.
The attainable technical indicator of the present invention is as follows:
Frequency range: 470 ~ 870MHz;
Bandwidth of operation: >=100MHz;
Polarization mode: horizontal polarization;
VSWR：≤1.1∶1；
Input power :≤1.0Kw;
Antenna gain: >=12dBi;
Front and back ratio: >=15dB;
Half-power beam width: 62 °, horizontal plane, vertical plane 34 °.
Following examples are implemented under premised on technical solution of the present invention, give detailed execution mode and concrete operating process, but protection scope of the present invention are not limited to following embodiment.In following embodiment, method therefor is conventional method if no special instructions.
[embodiment]
In the present embodiment, being that 548 ~ 659MHz is described with working band, as shown in Figure 3, is the voltage standing wave ratio measured drawing of the present embodiment; Wherein VSWR represents voltage standing wave ratio; Freq represents frequency.A kind of horizontal polarization digital television transmitting antenna battle array based on E type paster is in this frequency band, and the standing-wave ratio of input port is all less than 1.1, illustrates that input port matching properties is good.By finely tuning position and the size of metal washer 6, can significantly improve standing-wave ratio characteristic.
As shown in Figure 4, be the radiation pattern of the present embodiment; Wherein plotted represents gain, and its unit is that dBi, EPlane represent E face directional diagram, and HPlane represents H face directional diagram.In the present embodiment, a kind of horizontal polarization digital television transmitting antenna battle array based on E type paster half-power angle of radiation is in the horizontal direction 62 °, and half-power angle of radiation is in the vertical direction 34 °, and maximum gain is 12.1dBi, and front and back ratio reaches 18dB.
A kind of horizontal polarization digital television transmitting antenna battle array based on E type paster of the present invention, owing to have employed lamination multi-resmator technology, E type paster 13, match and regulate metal washer 6, possess that working band is wide, gain is high, voltage standing wave ratio is little, bear the features such as power is large, cost is low, processing is simple, debugging is convenient, be very suitable for applying in the terrestrial television emission system of decimeter wave wave band.
The above; be only the present invention's preferably embodiment; but protection scope of the present invention is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; be equal to according to technical scheme of the present invention and inventive concept thereof and replace or change, all should be encompassed within protection scope of the present invention.
Claims (6)
1., based on a horizontal polarization digital television transmitting antenna battle array for E type paster, it is characterized in that, comprise horizontally-polarized antenna unit, etc. merit divide homophase feeding network, paster connector and input connector; Described horizontally-polarized antenna unit flushes homophase arrangement by 2 stacked patch radiating elements and forms, and each stacked patch radiating element is made up of the top layer rectangle parasitic patch set gradually from top to bottom, second layer rectangle parasitic patch, E type paster and strata plate; Divide between the E type paster of homophase feeding network at stacked patch radiating element and strata plate etc. merit, be connected with E type paster by paster connector; E type paster is by paster connector feed, and second layer rectangle parasitic patch is by E type paster couple feed, and top layer rectangle parasitic patch is by second layer rectangle parasitic patch couple feed; The outer conductor of input connector is fixed on strata plate, inner wire earth penetrating plate with etc. merit divide homophase feeding network to be connected.
2. a kind of horizontal polarization digital television transmitting antenna battle array based on E type paster according to claim 1, is characterized in that, described E type paster cuts out two symmetrical rectangular apertures by common rectangular patch, and middle wing cut-away is divided and obtain.
3. a kind of horizontal polarization digital television transmitting antenna battle array based on E type paster according to claim 1, it is characterized in that, be fixedly connected with by the screw of Teflon material between described top layer rectangle parasitic patch, second layer rectangle parasitic patch, E type paster, strata plate.
4. a kind of horizontal polarization digital television transmitting antenna battle array based on E type paster according to claim 1, is characterized in that, weld metal packing ring on the inner wire of described input connector.
5. a kind of horizontal polarization digital television transmitting antenna battle array based on E type paster according to claim 1, is characterized in that, described paster connector can divide movement at the intermediate wing portion of E type paster, to regulate operating frequency and impedance matching.
6. a kind of horizontal polarization digital television transmitting antenna battle array based on E type paster according to claim 1, is characterized in that, described input connector adopts L27 type joint.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510631877.5A CN105186109B (en) | 2015-09-29 | 2015-09-29 | E-shaped patch-based horizontal polarization digital television transmitting antenna array |
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| CN201510631877.5A CN105186109B (en) | 2015-09-29 | 2015-09-29 | E-shaped patch-based horizontal polarization digital television transmitting antenna array |
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| CN105186109B CN105186109B (en) | 2021-03-02 |
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| CN109390673A (en) * | 2018-11-27 | 2019-02-26 | 成都北斗天线工程技术有限公司 | A kind of conformal medium resonator antenna of spill and its working method |
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