CN102683836B - A kind of GPRS antenna - Google Patents
A kind of GPRS antenna Download PDFInfo
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- CN102683836B CN102683836B CN201210132994.3A CN201210132994A CN102683836B CN 102683836 B CN102683836 B CN 102683836B CN 201210132994 A CN201210132994 A CN 201210132994A CN 102683836 B CN102683836 B CN 102683836B
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Abstract
The invention provides a kind of GPRS antenna, this antenna comprises: a medium substrate, be intervally arranged ground the first radiating element and the second radiating element, feed line, distributing point, earth connection and earth point, first radiating element comprise be arranged in medium substrate one surface first on first time harmonic oscillator on harmonic oscillator and another surface, second radiating element comprise be arranged in medium substrate one surface second on second time harmonic oscillator on harmonic oscillator and another surface, feed line to connect on first in harmonic oscillator and second harmonic oscillator in distributing point, earth connection connects first time harmonic oscillator and first time harmonic oscillator in earth point, feed line both sides are provided with ground wire, ground wire is connected with earth connection through some plated-through holes running through medium substrate.Namely GPRS antenna of the present invention meets the performance requirement of antenna by structural design, and has higher gain, can meet the Wireless Data Transmission requirement of the electronic equipment using GPRS module.
Description
Technical field
The invention belongs to communication equipment field, be specifically related to a kind of GPRS antenna for Set Top Box.
Background technology
Wireless Data Transmission is had and a kind ofly to be undertaken by GPRS, in the transfer of data of GPRS, the antenna of excellent performance is the guarantee of transfer of data, and will be not limited to the mobile terminals such as mobile phone along with the development of telecommunications, also can be a large amount of use more electronic equipment.
Digital TV set-top box is a kind of family digital end product released along with the renewal of television system, be satellite digital television signal, ground digital television signal, cable television network the digital signal even digital signal of the Internet carry out demodulation, decoding converts the receptible analog signal of existing TV and digital signal to.The integration of three networks is that the merger realizing cable television network, telecommunications network and internet is merged, and by the multimedia network information optimizing and combining composition business Highgrade integration to existing network environment, provides the MMS (Multimedia Message Service) integrating three nets.Therefore, Set Top Box becomes following requisite terminal electronic device.
The bridge that antenna exchanges as digital TV set-top box wireless data, will play very important effect.At present, for the antenna of digital TV set-top box often because gain deficiency causes Wireless Data Transmission to be interrupted, therefore, a kind of new GPRS antenna is needed, to solve Wireless Data Transmission problem.
Summary of the invention
In order to solve the antenna Problems existing of existing GPRS antenna especially for digital TV set-top box, the invention provides a kind of GPRS antenna, this antenna is met by structural design cleverly and uses GPRS, the Wireless Data Transmission requirement of electronic equipment, to achieve these goals, the present invention is by the following technical solutions:
A kind of GPRS antenna, described antenna comprises: a medium substrate, be intervally arranged ground the first radiating element and the second radiating element, feed line, distributing point, earth connection and earth point, described first radiating element comprise be arranged in described medium substrate one surface first on first time harmonic oscillator on harmonic oscillator and another surface, described second radiating element comprise be arranged in described medium substrate one surface second on second time harmonic oscillator on harmonic oscillator and another surface, on described first, in harmonic oscillator and second, harmonic oscillator is connected to described distributing point through described feed line, described first time harmonic oscillator and second time harmonic oscillator are connected to described earth point through described earth connection, described feed line both sides are provided with ground wire, described ground wire is connected with described earth connection through some plated-through holes running through described medium substrate.
Further, described first radiating element and described second radiating element resonance band are 880MHz ~ 960MHz and 1710MHz ~ 1880MHz.
Further, harmonic oscillator is identical with harmonic oscillator on described second on described first.
Further, harmonic oscillator is the approximate U-shaped of opening described distributing point dorsad on described first.
Further, on described first in harmonic oscillator and described second harmonic oscillator U-shaped opening in, fill some through holes running through described medium substrate in the same manner.
Further, described first time harmonic oscillator is identical with described second time harmonic oscillator.
Further, described first time harmonic oscillator is the approximate U-shaped of opening towards described distributing point, on described first in harmonic oscillator and first time harmonic oscillator, described second U-shaped of harmonic oscillator and second time harmonic oscillator the projection interval of the end on described medium substrate surface offset.
Further, in the U-shaped opening of described first time harmonic oscillator and described second time harmonic oscillator, some through holes running through described medium substrate are filled in the same manner.
Preferably, in harmonic oscillator, described second, harmonic oscillator, first time harmonic oscillator and described second time harmonic oscillator shape are identical approximate U-shaped on described first; On first, in harmonic oscillator and described second, harmonic oscillator is the approximate U-shaped of opening described distributing point dorsad, described first time harmonic oscillator is the approximate U-shaped of opening towards described distributing point, on described first in harmonic oscillator and first time harmonic oscillator, described second U-shaped of harmonic oscillator and second time harmonic oscillator the projection interval of the end on described medium substrate surface offset, on first in harmonic oscillator, described second harmonic oscillator, described first time harmonic oscillator and described second time harmonic oscillator U-shaped opening in, fill some through holes running through described medium substrate in the same manner.
Further, described medium substrate component comprises glass-fiber-fabric, epoxy resin and comprises the compound with described epoxy resin generation cross-linking reaction.
Namely GPRS antenna of the present invention meets the performance requirement of antenna by structural design, and there is higher gain, the Wireless Data Transmission requirement of the electronic equipment using GPRS module can be met, in conjunction with low-loss antenna medium substrates, make GPRS antenna have good service behaviour.
Accompanying drawing explanation
Fig. 1 is the medium substrate one surface texture schematic diagram of GPRS antenna of the present invention;
Fig. 2 is that Fig. 1 circle shows magnified partial view;
Fig. 3 is another surface texture schematic diagram of medium substrate of GPRS antenna of the present invention;
Fig. 4 is that Fig. 3 circle shows magnified partial view.
Embodiment
Now in detail with reference to the embodiment described in accompanying drawing.In order to complete understanding the present invention, refer to numerous detail in the following detailed description.But it should be appreciated by those skilled in the art that the present invention can realize without the need to these details.In other embodiments, known method is not described in detail.Process, assembly and circuit, in order to avoid unnecessarily make embodiment fuzzy.
See being respectively the surperficial structural representation of GPRS antenna medium substrate of the present invention 1 liang shown in Fig. 1 and Fig. 3, the partial enlarged drawing view 2 of composition graphs 1 and Fig. 3 and Fig. 4, this GPRS antenna comprises: on medium substrate 1, first, harmonic oscillator 2 and first time harmonic oscillator 7 form the second radiating element, feed line 4, distributing point 5, ground wire 6, earth connection 9, earth point 10, some plated-through holes 11 and the some through holes 12 that harmonic oscillator 3 on the first radiating element, second and second time harmonic oscillator 8 form.On first, in harmonic oscillator 2, second, harmonic oscillator 3, feed line 4, ground wire 6 are distributed in one of medium substrate 1 on the surface, the approximate U-shaped of harmonic oscillator 3 distributing point 5 dorsad in opening in harmonic oscillator 2 and second on first, this surface being arranged in medium substrate 1 at interval, ground wire 6 interval be arranged on feed line 4 two outside, on first, in harmonic oscillator 2, second, harmonic oscillator 3 is connected to distributing point 5 through feed line 4, first time harmonic oscillator 7, second time harmonic oscillator 8, earth connection 9, be distributed in another surface of medium substrate 1, first time harmonic oscillator 7 and the second ground unit 8 are the approximate U-shaped of opening towards distributing point 5, this surface being arranged in medium substrate 1 at interval, first time harmonic oscillator 7 and the second position of ground unit 8 on medium substrate 1 be with first on harmonic oscillator 2, on second, the position of harmonic oscillator 3 is corresponding, harmonic oscillator 2 in first time harmonic oscillator 7 and first, in second time harmonic oscillator 8 and second U-shaped of harmonic oscillator 3 the projection interval of the end on medium substrate 1 surface offset, plated-through hole 11 is arranged on the ground wire 6 on medium substrate 1 one surface, run through medium substrate 1 to earth connection 9, electrical connection ground wire 6 and earth connection 9, first time harmonic oscillator 7, second time harmonic oscillator 8 and ground wire 6 are connected to earth point 10 through earth connection 9, through hole 12 is rectangular, run through medium substrate 1, be distributed in the U-shaped opening of harmonic oscillator 3, first time harmonic oscillator 7, second time harmonic oscillator 8 in harmonic oscillator 2, second on first, and on first in harmonic oscillator 2, second harmonic oscillator 3, first time harmonic oscillator 7, second time harmonic oscillator 8 U-shaped opening in arrangement mode identical.
In first time harmonic oscillator 7 and first in harmonic oscillator 2, second time harmonic oscillator 8 and second U-shaped of harmonic oscillator 3 the projection interval of the end on medium substrate 1 surface offset, namely be that in first time harmonic oscillator 7 and first, harmonic oscillator 2 is non-intersect in the projection on medium substrate 1 surface, the bottom of both U-shaped is relative, and more spaced apart distances.
The resonance band forming by harmonic oscillator 2 on first and first time harmonic oscillator 7 the second radiating element that harmonic oscillator 3 on first radiating element, second and second time harmonic oscillator 8 form in the GPRS antenna of the present embodiment is 880MHz ~ 960MHz and 1710MHz ~ 1880MHz.
Medium substrate 1 component comprises glass-fiber-fabric, epoxy resin and the compound with this epoxy resin generation cross-linking reaction, below by way of embodiment, this medium substrate is described.
First kind execution mode is as follows:
In such execution mode, for the production of the infiltration solution of some low dielectric constant and low loss of the medium substrate (comprising single or multiple lift lamination plate, copper-clad base plate, pcb board, chip carrier part or similar application part etc.) in processing the present invention.Described infiltration solution comprises: the first component, comprises epoxy resin; Second component, comprises the compound with described epoxy resin generation cross-linking reaction; And one or more solvents.Wherein the first component and the second component configure mixing according to a certain percentage.Above-mentioned first component, the second component and one or more solvents described are made into described infiltration solution.Described infiltration solution after stirring, a described glass-fiber-fabric are infiltrated in described infiltration solution the first component and the second component are adsorbed in glass-fiber-fabric or on the surface; Then baking is copied described glass-fiber-fabric and is made one or more solvent evaporates described, and makes the first component and the mutual chemical combination of the second component be cross-linked to form semi-solid preparation thing or solidfied material.Semi-solid preparation thing refers to be copied in the relatively low environment of temperature by the glass-fiber-fabric of absorption first component and the second component in baking, and the first component comprises the soft mixture of epoxy resin and the second component inclusion compound part generation chemical combination cross-linking reaction.Solidfied material refers to be copied in the relatively high environment of temperature by the glass-fiber-fabric of absorption first component and the second component in baking, and the first component comprises the relatively hard mixture of epoxy resin and the second component inclusion compound part generation chemical combination cross-linking reaction.Wherein said semi-solid preparation or solidfied material, at 1GHz operation at frequencies, have≤nominal dielectric constant of 4.0 and the electrical loss tangent amount of≤0.01.
In the present embodiment, the described glass-fiber-fabric infiltrated forms semi-solid preparation thing (in the form of sheets) by low-temperature bake, then described semi-solid preparation thing is cut into and cuts out sheet, needs described multi-disc to cut out sheet superimposed and carry out the multilayer dielectric substrate (i.e. multilayer laminate or sheet) that is hot pressed into described in this enforcement according to thickness.Wherein hot pressing process object makes the first component comprise epoxy resin and chemical combination cross-linking reaction all occurs the second component inclusion compound exactly.
Can certainly understand, the described glass-fiber-fabric infiltrated directly forms solidfied material by high-temperature baking, i.e. single-layer medium substrate of the present invention (i.e. individual layer laminated sheet or sheet).
In the particular embodiment, the compound of described second component can select the copolymer comprised by polarity macromolecule and non-polar high polymer chemical combination, as styrene maleic anhydride copolymer.Be understandable that, can all can be used for the Formulation Ingredients of present embodiment with the copolymer of epoxy resin generation chemical combination cross-linking reaction.The wherein styrene maleic anhydride copolymer of present embodiment, its molecular formula is as follows:
4 styrene are comprised in above-mentioned styrene maleic anhydride copolymer molecular formula.In other embodiments, corresponding molecular weight can be selected, as comprised 6,8 styrene or any number in styrene maleic anhydride copolymer molecular formula.Epoxy resin is the organic high molecular compound containing two or more epoxide groups in general reference molecule.
In other examples, the compound of the described second component mixture that can also select cyanate performed polymer or select styrene maleic anhydride copolymer to mix according to arbitrary proportion with cyanate performed polymer.
In the particular embodiment, described epoxy resin and styrene maleic anhydride copolymer are prepared according to the ratio of sense value, then add a certain amount of solvent solution-forming.Described epoxy resin and styrene maleic anhydride copolymer hybrid technique adopt conventional equipment to process, as normal agitation bucket and reactor make epoxy resin and styrene maleic anhydride copolymer Homogeneous phase mixing, thus be namely infiltration solution of the present invention after making the epoxy resin in described solution and styrene maleic anhydride copolymer Homogeneous phase mixing.
In the particular embodiment, impelling gel (selecting gel ambient temperature 171 DEG C) in above-mentioned infiltration solution 200-400 second by adding certain promoter, wherein promoting that about 260 seconds above-mentioned infiltration solution gelatinizing time (as 258-260 second or 250-270 second etc.) effect is better.Described promoter can be selected and be included but not limited to tertiary amines, any class in imidazoles and Boron Trifluoride Ethylamine or mixture between them.
One or more solvents described can select the mixed solvent including but not limited in acetone, butanone, DMF, EGME, toluene be mixed to form between any one or above-mentioned two or more solvent.
In another embodiment, described infiltration solution comprises: the first component, comprises epoxy resin; Second component, comprises the compound with described epoxy resin generation cross-linking reaction; And one or more solvents.The mixture that the compound of described second component selects styrene maleic anhydride copolymer to mix according to arbitrary proportion with cyanate performed polymer.Wherein said cyanate performed polymer concentration 75%.Promoter selects methylimidazole; Butanone selected by described solvent.This execution mode infiltrates solution and specifically fills a prescription as following table:
In above-mentioned formula, add styrene maleic anhydride copolymer and cyanate performed polymer, all can there is chemical combination cross-linking reaction with epoxy resin in both simultaneously.
Equations of The Second Kind execution mode is as follows:
In Equations of The Second Kind execution mode of the present invention, the composition (also can be referred to as compound or composite material) of some low dielectric constant and low loss of the medium substrate (comprising single or multiple lift lamination plate, copper-clad base plate, pcb board, chip carrier part or similar application part etc.) in production the present invention, described composition comprises glass-fiber-fabric, the first component and the second component, and the first component comprises epoxy resin; Second component comprises the compound with described epoxy resin generation cross-linking reaction.Wherein said composition, at 1GHz operation at frequencies, has≤nominal dielectric constant of 4.0 and the electrical loss tangent amount of≤0.01.Wherein in present embodiment, described composition, at 1GHz operation at frequencies, has≤electrical loss tangent the amount of 0.005.
Described composition fabrication processes also comprises following technique:
First, the second component is comprised compound that crosslinked reaction occurs with described epoxy resin and described epoxy resin is prepared according to the ratio of sense value, then add a certain amount of solvent solution-forming.In the particular embodiment, described compound comprises the copolymer of polarity macromolecule and non-polar high polymer chemical combination, and the copolymer of wherein preferred embodiment can select styrene maleic anhydride copolymer.Described epoxy resin and styrene maleic anhydride copolymer hybrid technique adopt conventional equipment to process, as normal agitation bucket and reactor make epoxy resin and styrene maleic anhydride copolymer Homogeneous phase mixing.The wherein styrene maleic anhydride copolymer of present embodiment, its molecular formula is as follows:
4 styrene are comprised in above-mentioned styrene maleic anhydride copolymer molecular formula.In other embodiments, corresponding molecular weight can be selected, as comprised 6 or 8 styrene in styrene maleic anhydride copolymer molecular formula.Epoxy resin is the organic high molecular compound containing two or more epoxide groups in general reference molecule.
In other examples, the compound of the described second component mixture that can also select cyanate performed polymer or select styrene maleic anhydride copolymer to mix according to arbitrary proportion with cyanate performed polymer.
In the particular embodiment, make the epoxy resin in described solution and styrene maleic anhydride copolymer can carry out chemical combination cross-linking reaction under certain condition, depend on described glass-fiber-fabric after there is chemical combination cross-linking reaction, thus form medium substrate of the present invention.
One or more solvents described can select to include but not limited in acetone, butanone, DMF, EGME, toluene any one or above-mentioned between mixed solvent.
The various component ratio of described solution one specific embodiment is as following table:
Above-mentioned solution formula comprises epoxy resin, styrene maleic anhydride copolymer, cyanate performed polymer, promoter methylimidazole and a kind of solvent butanone.In above-mentioned formula, add styrene maleic anhydride copolymer and cyanate performed polymer, both are all cross-linked with epoxy resin energy chemical combination simultaneously.
Then, from above-mentioned solution, extracting described a small amount of test sample book, the solution gelatinizing time described in a certain specified temp environmental testing, regulating described solution at this fixed temperature environment gel time by adding promoter.The gel within 200-400 time second of above-mentioned solution can be impelled by adding one or more promoter, wherein said a certain specified temp environment is a single temperature value or a selected specific range of temperatures, in present embodiment, carrying out gel time by being set in 171 degrees Celsius of environment, making above-mentioned solution better in gel time about 260 seconds (as 258-260 second or 250-270 second etc.) effect.Described promoter can be selected and be included but not limited to select tertiary amines, any class in imidazoles and Boron Trifluoride Ethylamine or mixture between them.
3rd step, when above-mentioned test sample book during gel, takes out oven dry after being infiltrated by glass-fiber-fabric in described solution in 200-400 time range second, forms composition.In these concrete steps, glass-fiber-fabric to be immersed in solution fully to infiltrate and ensure that described epoxy resin and styrene maleic anhydride copolymer to be adsorbed in glass-fiber-fabric or on the surface, then the glass cloth of solution is immersed by hanging on air dry oven 180 DEG C of bakings about 5 minutes, solvent butanone fully volatilizees by object exactly, and make described epoxy resin and styrene maleic anhydride copolymer chemical combination cross-linking reaction, the product of glass cloth and described chemical combination cross-linking reaction obtains semi-solid preparation composition.Be understandable that, extend baking time and or improve baking temperature, can hardening composition be formed.General a large amount of industrial production adopts in vertical gluing machine and completes in impregnation subsystem and baking oven subsystem.
Finally, the change composition of oven dry and conductive foil are carried out pressing.In these concrete steps, by change composition (prepreg or prepreg) and conductive foil pressing in vacuum hotpressing machine of drying.Described conductive foil is selected and is comprised the obtained electric conducting material such as copper, silver, gold, aluminium or above-mentioned material alloy material.Because the price of copper product is relatively low, the conductive foil be made of copper therefore is selected to be suitable for industrialization.
Simultaneously in order to applicable antenna system or some performance parameter requirements of electronic equipment, multi-disc prepreg or prepreg are carried out lamination and form multilayer laminate.Apply these laminated sheets and can effectively reduce antenna recombination loss, and then ensure aerial radiation yield value.
Utilize above-mentioned composition, single-layer sheet prepreg or prepreg, multilayer laminate be processed into antenna substrate, pcb board, copper-clad base plate, chip carrier part or similar application part, reduced dielectric constant and the dielectric loss of above-mentioned product (antenna substrate, pcb board, copper-clad base plate, chip carrier part or similar application part, single or multiple lift press presser blade) by the form introducing polarity and non-polar high polymer copolymer, thus meet its demand applied in the electronic device.
Such as, a kind of Mobile multi-media broadcasting device is vehicle-mounted CMMB terminal, this CMMB terminal comprises main frame, head rest cover, display screen, connecting rod, power line and GPRS antenna, this vehicle-mounted CMMB terminal is fixed on the upper end at seat by connecting rod, head rest cover is coated with the surrounding of the main frame of vehicle-mounted CMMB terminal, GPRS antenna and display screen, GPRS antenna is placed on the inner side of the close vehicle window of head rest cover, so that receive and send CMMB signal.
By reference to the accompanying drawings preferred embodiment of the present invention is described above; but the present invention is not limited to above-mentioned embodiment; those of ordinary skill in the art is under enlightenment of the present invention; to make under the ambit that present inventive concept and claim protect, all within protection of the present invention not departing from.
Claims (4)
1. a GPRS antenna, it is characterized in that, described antenna comprises: a medium substrate, be intervally arranged ground the first radiating element and the second radiating element, feed line, distributing point, earth connection and earth point, described first radiating element comprise be arranged in described medium substrate one surface first on first time harmonic oscillator on harmonic oscillator and another surface, described second radiating element comprise be arranged in described medium substrate one surface second on second time harmonic oscillator on harmonic oscillator and another surface, on described first, in harmonic oscillator and second, harmonic oscillator is connected to described distributing point through described feed line, described first time harmonic oscillator and second time harmonic oscillator are connected to described earth point through described earth connection, described feed line both sides are provided with ground wire, described ground wire is connected with described earth connection through some plated-through holes running through described medium substrate,
Wherein, in harmonic oscillator and described second, harmonic oscillator is the approximate U-shaped of opening described distributing point dorsad on described first;
Described first time harmonic oscillator and described second time harmonic oscillator are the approximate U-shaped of opening towards described distributing point;
On first in harmonic oscillator, described second harmonic oscillator, described first time harmonic oscillator and described second time harmonic oscillator U-shaped opening in, fill some through holes running through described medium substrate in the same manner.
2. GPRS antenna according to claim 1, is characterized in that, described first radiating element and described second radiating element resonance band are 880MHz ~ 960MHz and 1710MHz ~ 1880MHz.
3. GPRS antenna according to claim 1, is characterized in that, on described first in harmonic oscillator and first time harmonic oscillator, described second U-shaped of harmonic oscillator and second time harmonic oscillator the projection interval of the end on described medium substrate surface offset.
4. GPRS antenna according to claim 1, is characterized in that, described medium substrate component comprises glass-fiber-fabric, epoxy resin and comprises the compound with described epoxy resin generation cross-linking reaction.
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| CN201210132994.3A CN102683836B (en) | 2012-04-28 | 2012-04-28 | A kind of GPRS antenna |
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| CN201210132994.3A CN102683836B (en) | 2012-04-28 | 2012-04-28 | A kind of GPRS antenna |
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| CN102683836A CN102683836A (en) | 2012-09-19 |
| CN102683836B true CN102683836B (en) | 2015-08-19 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018191982A1 (en) * | 2017-04-21 | 2018-10-25 | 深圳市大疆创新科技有限公司 | Antenna, ground control system of unmanned aerial vehicle, and unmanned aerial vehicle system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201226374Y (en) * | 2008-06-25 | 2009-04-22 | 寰波科技股份有限公司 | Antennae |
| CN201438503U (en) * | 2009-07-14 | 2010-04-14 | 深圳市共进电子有限公司 | Printing board type built-in antenna device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2003208207A1 (en) * | 2003-02-28 | 2004-09-17 | Research In Motion Limited | Multiple-element antenna with wide-band antenna element |
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- 2012-04-28 CN CN201210132994.3A patent/CN102683836B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201226374Y (en) * | 2008-06-25 | 2009-04-22 | 寰波科技股份有限公司 | Antennae |
| CN201438503U (en) * | 2009-07-14 | 2010-04-14 | 深圳市共进电子有限公司 | Printing board type built-in antenna device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018191982A1 (en) * | 2017-04-21 | 2018-10-25 | 深圳市大疆创新科技有限公司 | Antenna, ground control system of unmanned aerial vehicle, and unmanned aerial vehicle system |
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