CN102683836A - General packet radio service (GPRS) antenna - Google Patents
General packet radio service (GPRS) antenna Download PDFInfo
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- CN102683836A CN102683836A CN2012101329943A CN201210132994A CN102683836A CN 102683836 A CN102683836 A CN 102683836A CN 2012101329943 A CN2012101329943 A CN 2012101329943A CN 201210132994 A CN201210132994 A CN 201210132994A CN 102683836 A CN102683836 A CN 102683836A
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Abstract
The invention provides a general packet radio service (GPRS) antenna which comprises a medium substrate, a first radiating element, a second radiating element, a feeder line, a feeding point, a grounding line and a ground point, wherein the first radiating element and the second radiating element are distributed separately. The first radiating element comprises a first upper harmonic oscillator distributed on one surface of the medium substrate and a first lower harmonic oscillator distributed on the other surface of the medium substrate. The second radiating element comprises a second upper harmonic oscillator distributed on one surface of the medium substrate and a second lower harmonic oscillator distributed on the other surface of the medium substrate. The first upper harmonic oscillator and the second upper harmonic oscillator are connected at the feeding point through the feeder line, the first lower harmonic oscillator and the second lower harmonic oscillator are connected at the ground point through the grounding line, ground wires are arranged on two sides of the feeder line, and the ground wires are connected with the grounding line through a plurality of plated-through holes penetrating through the medium substrate. The GPRS antenna not only meets performance requirements through structural design, but also has high gain, and can meet wireless data transmission requirements of an electrical device using a GPRS module.
Description
Technical field
The invention belongs to communication equipment field, be specifically related to a kind of GPRS antenna that is used for STB.
Background technology
Wireless data transmission has a kind ofly carries out through GPRS; In the transfer of data of GPRS; The antenna of excellent performance is the assurance of transfer of data, and along with the continuous development of telecommunications will be not limited to portable terminals such as mobile phone, also can be a large amount of use more electronic equipment.
DTV STB is a kind of family digital end product of releasing along with the renewal of television system, be the digital signal of satellite digital TV signal, ground digital television signal, cable television network digital signal even the Internet carry out demodulation, decoding converts existing receptible analog signal of TV and digital signal to.The integration of three networks is to realize the merger of cable television network, telecommunications network and internet fusion, and the multimedia network information of forming professional Highgrade integration that optimizes and combines through to the existing network environment provides the MMS (Multimedia Message Service) that integrates three nets.Therefore, STB becomes following requisite terminal electronic equipment.
Antenna will play important effect as the bridge of DTV STB wireless data exchange.At present, the antenna that is used for DTV STB often is interrupted because of the deficiency that gains causes wireless data transmission, therefore, needs a kind of new GPRS antenna, to solve the wireless data transmission problem.
Summary of the invention
In order to solve the problem of existing GPRS antenna especially for the antenna existence of DTV STB; The invention provides a kind of GPRS antenna; This antenna has satisfied use GPRS through structural design cleverly; The wireless data transmission requirement of electronic equipment, to achieve these goals, the present invention adopts following technical scheme:
A kind of GPRS antenna; Said antenna comprises: a medium substrate, ground first radiating element and second radiating element, feed line, distributing point, earth connection and earth point are intervally arranged; Said first radiating element comprise be arranged in said medium substrate one surface first on first time harmonic oscillator on harmonic oscillator and another surface; Said second radiating element comprise be arranged in said medium substrate one surface second on second time harmonic oscillator on harmonic oscillator and another surface; Said feed line connects on said first on the harmonic oscillator and second harmonic oscillator in said distributing point; Said earth connection connects said first time harmonic oscillator and first time harmonic oscillator in said earth point, and said feed line both sides are provided with ground wire, and said ground wire is connected with said earth connection through some plated-through holes that run through said medium substrate.
Further, said first radiating element and the said second radiating element resonance band are 880MHz～960MHz and 1710MHz～1880MHz.
Further, on said first on the harmonic oscillator and said second harmonic oscillator identical.
Further, harmonic oscillator is the opening approximate U font of said distributing point dorsad on said first.
Further, on the harmonic oscillator and said second in the U-shaped opening of harmonic oscillator, fill some through holes that run through said medium substrate on said first identically.
Further, said first time harmonic oscillator is identical with said second time harmonic oscillator.
Further; Said first time harmonic oscillator is the approximate U font of opening towards said distributing point, on said first on harmonic oscillator and the first time harmonic oscillator, said second end of the U font of harmonic oscillator and second time harmonic oscillator the projection interval on said medium substrate surface offset.
Further, in the U-shaped opening of said first time harmonic oscillator and said second time harmonic oscillator, fill some through holes that run through said medium substrate identically.
As preferred version, on said first on the harmonic oscillator, said second harmonic oscillator, first time harmonic oscillator be identical approximate U font with said second time harmonic oscillator shape; On first on the harmonic oscillator and said second harmonic oscillator be the opening approximate U font of said distributing point dorsad; Said first time harmonic oscillator is the approximate U font of opening towards said distributing point; On said first on harmonic oscillator and the first time harmonic oscillator, said second end of the U font of harmonic oscillator and second time harmonic oscillator the projection interval on said medium substrate surface offset; On the harmonic oscillator, said second in the U-shaped opening of harmonic oscillator, said first time harmonic oscillator and said second time harmonic oscillator, fill some through holes that run through said medium substrate on first identically.
Further, said medium substrate component comprises glass cloth, epoxy resin and comprises the compound with said epoxy resin generation cross-linking reaction.
GPRS antenna of the present invention has promptly satisfied the performance requirement of antenna through structural design; And has higher gain; Can satisfy the wireless data transmission requirement of the electronic equipment that uses the GPRS module,, make the GPRS antenna have good working performance in conjunction with low-loss antenna medium substrates.
Description of drawings
Fig. 1 is the medium substrate one surface texture sketch map of GPRS antenna of the present invention;
Fig. 2 is that Fig. 1 circle shows the part enlarged drawing;
Fig. 3 is another surface texture sketch map of medium substrate of GPRS antenna of the present invention;
Fig. 4 is that Fig. 3 circle shows the part enlarged drawing.
Embodiment
Now in detail with reference to the embodiment that describes in the accompanying drawing.For complete understanding the present invention, numerous details in following detailed description, have been mentioned.But it should be appreciated by those skilled in the art that the present invention can need not these details and realize.In other embodiments, be not described in detail known method.Process, assembly and circuit are in order to avoid unnecessarily make embodiment fuzzy.
Referring to Fig. 1 and the structural representation that is respectively 1 liang of surface of GPRS antenna medium substrates of the present invention shown in Figure 3; In conjunction with partial enlarged drawing view 2 and Fig. 4 of Fig. 1 and Fig. 3, this GPRS antenna comprises: harmonic oscillator 2 and first time harmonic oscillator 7 are formed second radiating element, feed line 4, distributing point 5, ground wire 6, earth connection 9, earth point 10, number of metal hole 11 and the some through holes 12 that harmonic oscillator 3 on first radiating elements, second and second time harmonic oscillator 8 are formed on the medium substrate 1, first.On first on the harmonic oscillator 2, second harmonic oscillator 3, feed line 4, ground wire 6 be distributed on the surface of medium substrate 1; On first on the harmonic oscillator 2 and second harmonic oscillator 3 be the approximate U font of opening towards distributing point 5; This surface that is arranged in medium substrate 1 at interval; Ground wire 6 two outsides that are arranged on feed line 4 at interval, on first on the harmonic oscillator 2, second harmonic oscillator 3 be connected in 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; The first time harmonic oscillator 7 and second ground unit 8 are the approximate U font of opening towards distributing point 5; This surface that is arranged in medium substrate 1 at interval; The first time harmonic oscillator 7 and second ground unit 8 the position on the medium substrate 1 be with first on the harmonic oscillator 2, second position of harmonic oscillator 3 corresponding; The end of the U font of harmonic oscillator 3, offset on the projection interval ground on medium substrate 1 surface on harmonic oscillator 2 on first time harmonic oscillator 7 and first, the second time harmonic oscillator 8 and second, and plated-through hole 11 is arranged on the surperficial ground wire 6 of medium substrate 1 one, runs through medium substrate 1 to connecting wires 9; Be electrically connected ground wire 6 and 9, the first times harmonic oscillators of earth connection 7, second time harmonic oscillator 8 and ground wire 6 and 9 be connected in earth point 10 through connecting wires; Through hole 12 is rectangular; Run through medium substrate 1; Be distributed in the U-shaped opening of harmonic oscillator on the harmonic oscillator on first 2, second 3, first time harmonic oscillator 7, second time harmonic oscillator 8, and the arrangement mode in the U-shaped opening of harmonic oscillator 3 on the harmonic oscillator 2, second, first time harmonic oscillator 7, second time harmonic oscillator 8 is identical on first.
On harmonic oscillator 2 on first time harmonic oscillator 7 and first, the second time harmonic oscillator 8 and second end of the U font of harmonic oscillator 3 the projection interval on medium substrate 1 surface offset; Promptly be that harmonic oscillator 2 is non-intersect in the projection on medium substrate 1 surface on first time harmonic oscillator 7 and first; The bottom of both U fonts is relative, and more spaced apart distances.
The resonance band of forming second radiating element that harmonic oscillator 3 on first radiating element, second and second time harmonic oscillator 8 form by harmonic oscillator 2 on first and first time harmonic oscillator 7 in the GPRS antenna of present embodiment is 880MHz～960MHz and 1710MHz～1880MHz.
Medium substrate 1 component comprise glass cloth, epoxy resin and with the compound of this epoxy resin generation cross-linking reaction, below through this medium substrate of embodiment explanation.
First kind execution mode is following:
In such execution mode, be used for the infiltration solution of some low dielectric constant and low loss of production and processing the present invention's medium substrate (comprising single or multiple lift lamination plate, copper-clad base plate, pcb board, chip carrier spare or similar application part etc.).Said infiltration solution comprises: first component comprises epoxy resin; Second component comprises the compound with said epoxy resin generation cross-linking reaction; And one or more solvents.Wherein first component and second component dispose mixing according to a certain percentage.Above-mentioned first component, second component and said one or more solvents are made into said infiltration solution.Said infiltration solution is through stirring the back, will a said glass cloth soaking into first component and second component are adsorbed in the glass cloth perhaps on the surface; Baking is copied said glass cloth and is made said one or more solvent evaporates then, and makes first component and the mutual chemical combination of second component be cross-linked to form semi-solid preparation thing or solidfied material.The semi-solid preparation thing is meant to be copied the glass cloth of absorption first component and second component in the relatively low environment of temperature in baking, and first component comprises the soft mixture that the chemical combination cross-linking reaction partly takes place for epoxy resin and the second component inclusion compound.Solidfied material be meant with the glass cloth of absorption first component and second component baking copy temperature relatively than high ambient in, first component comprises the relative harder mixture that the chemical combination cross-linking reaction partly takes place for epoxy resin and the second component inclusion compound.Wherein said semi-solid preparation or solidfied material are worked under the 1GHz frequency, have≤4.0 nominal dielectric constant and≤0.01 electrical loss tangent amount.
In this execution mode; The glass cloth of said infiltration forms semi-solid preparation thing (in the form of sheets) through low-temperature bake; Said then semi-solid preparation thing is cut into cuts out sheet, and it is superimposed and be hot pressed into this and implement described multilayer dielectricity substrate (being multilayer layer pressing plate or sheet) according to the thickness needs said multi-disc to be cut out sheet.Wherein the hot pressing process purpose makes the component of winning comprise epoxy resin and the chemical combination cross-linking reaction all takes place the second component inclusion compound exactly.
Can certainly understand, the glass cloth of said infiltration directly forms solidfied material, single-layer medium substrate promptly of the present invention (being individual layer laminated sheet or sheet) through high-temperature baking.
In concrete embodiment, the compound of said second component can be selected the copolymer that comprises by polarity macromolecule and non-polar high polymer chemical combination for use, like styrene maleic anhydride copolymer.It is understandable that, can all can be used for the prescription composition of this execution mode with the copolymer of epoxy resin generation chemical combination cross-linking reaction.The styrene maleic anhydride copolymer of this execution mode wherein, its molecular formula is following:
In above-mentioned styrene maleic anhydride copolymer molecular formula, comprise 4 styrene.In other embodiments, can select corresponding molecular weight, as comprising 6,8 styrene or any number in the styrene maleic anhydride copolymer molecular formula.Epoxy resin is the organic high molecular compound that contains two or more epoxide groups in the general reference molecule.
In other embodiment, the mixture that the compound of said second component can also be selected the cyanate performed polymer for use or select for use styrene maleic anhydride copolymer and cyanate performed polymer to mix according to arbitrary proportion.
In concrete embodiment, said epoxy resin and styrene maleic anhydride copolymer are prepared according to the ratio of sense value, add the certain amount of solvent wiring solution-forming then.Said epoxy resin and styrene maleic anhydride copolymer hybrid technique adopt conventional equipment to process; Like common agitator and agitated reactor epoxy resin is evenly mixed with styrene maleic anhydride copolymer, thus make in the said solution epoxy resin with promptly be infiltration solution according to the invention after styrene maleic anhydride copolymer evenly mixes.
In concrete embodiment; Impel above-mentioned infiltration solution 200-400 gel in second (selecting 171 ℃ of gel ambient temperatures for use) through adding certain promoter, promote wherein about the above-mentioned 260 seconds infiltration solution gelatinizing time that (like 258-260 second or 250-270 second etc.) effect is better.Said promoter can be selected for use and included but not limited to tertiary amines, any one type or mixture between them in imidazoles and the boron trifluoride mono aminoethane.
Said one or more solvents can be selected for use and include but not limited to acetone, butanone, N, mix the mixed solvent that forms in dinethylformamide, EGME, the toluene between any one or the above-mentioned two or more solvent.
In another embodiment, said infiltration solution comprises: first component comprises epoxy resin; Second component comprises the compound with said epoxy resin generation cross-linking reaction; And one or more solvents.The mixture that the compound of said second component selects for use styrene maleic anhydride copolymer and cyanate performed polymer to mix according to arbitrary proportion.Wherein said cyanate performed polymer concentration 75%.Promoter is selected methylimidazole for use; Said solvent is selected butanone for use.This execution mode soaks into solution specifically fills a prescription like following table:
In above-mentioned prescription, added styrene maleic anhydride copolymer and cyanate performed polymer simultaneously, the chemical combination cross-linking reaction all can take place with epoxy resin in both.
Second type of execution mode is following:
In second type of 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 among production the present invention (comprising single or multiple lift lamination plate, copper-clad base plate, pcb board, chip carrier spare or similar application part etc.); Said composition comprises glass cloth, first component and second component, and first component comprises epoxy resin; Second component comprises the compound with said epoxy resin generation cross-linking reaction.Wherein said composition is worked under the 1GHz frequency, has≤4.0 nominal dielectric constant and≤0.01 electrical loss tangent amount.Wherein in this execution mode, said composition is worked under the 1GHz frequency, has≤0.005 electrical loss tangent amount.
Said composition fabrication processes also comprises following technology:
At first, second component is comprised the compound and the said epoxy resin that crosslinked reaction take place with said epoxy resin prepare, add the certain amount of solvent wiring solution-forming then according to the ratio of sense value.In concrete embodiment, said compound comprises the copolymer of polarity macromolecule and non-polar high polymer chemical combination, and wherein the copolymer of preferred embodiment can be selected styrene maleic anhydride copolymer for use.Said epoxy resin and styrene maleic anhydride copolymer hybrid technique adopt conventional equipment to process, and like common agitator and agitated reactor epoxy resin are evenly mixed with styrene maleic anhydride copolymer.The styrene maleic anhydride copolymer of this execution mode wherein, its molecular formula is following:
In above-mentioned styrene maleic anhydride copolymer molecular formula, comprise 4 styrene.In other embodiments, can select corresponding molecular weight, as comprising 6 or 8 styrene in the styrene maleic anhydride copolymer molecular formula.Epoxy resin is the organic high molecular compound that contains two or more epoxide groups in the general reference molecule.
In other embodiment, the mixture that the compound of said second component can also be selected the cyanate performed polymer for use or select for use styrene maleic anhydride copolymer and cyanate performed polymer to mix according to arbitrary proportion.
In concrete embodiment, make epoxy resin and styrene maleic anhydride copolymer in the said solution can carry out the chemical combination cross-linking reaction under certain condition, take place to depend on said glass cloth after the chemical combination cross-linking reaction, thereby form medium substrate of the present invention.
Said one or more solvents can be selected for use and include but not limited to acetone, butanone, N, in dinethylformamide, EGME, the toluene any one or above-mentioned between mixed solvent.
Said various component ratios of solution one specific embodiment such 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 prescription, added styrene maleic anhydride copolymer and cyanate performed polymer simultaneously, both are all crosslinked with epoxy resin ability chemical combination.
Then, from above-mentioned solution, extract said a small amount of test sample book,, regulate said solution at this fixed temperature environment gel time through adding promoter in a certain specified temp environmental testing said solution gelatinizing time.Can impel above-mentioned solution in 200-400 gel in time second through adding one or more promoter; Wherein said a certain specified temp environment is a single temperature value or a selected specific range of temperatures; At this execution mode; Carry out gel time through being set in 171 degrees centigrade of environment, make above-mentioned solution preferable in gel time about 260 seconds (like 258-260 second or 250-270 second etc.) effect.Said promoter can be selected for use and included but not limited to select for use tertiary amines, any one type or mixture between them in imidazoles and the boron trifluoride mono aminoethane.
The 3rd step is when above-mentioned test sample book during gel, is soaked into the back with glass cloth and taken out oven dry in 200-400 time range second, the formation composition in said solution.In these concrete steps; Glass cloth immersed fully to soak in the solution guarantee that said epoxy resin and styrene maleic anhydride copolymer are adsorbed in the glass cloth perhaps on the surface; The glass cloth that immerses solution then is through hanging on air dry oven 180 ℃ of bakings about 5 minutes; Purpose is fully volatilized the solvent butanone exactly, and makes said epoxy resin and styrene maleic anhydride copolymer chemical combination cross-linking reaction, and the product of glass cloth and said chemical combination cross-linking reaction makes the semi-solid preparation composition.It is understandable that, prolong stoving time with or improve baking temperature, can form hardening composition.General a large amount of commercial production adopts in the vertical gluing machine and accomplishes in the impregnation subsystem and baking oven subsystem.
At last, change composition and the conductive foil with oven dry carries out pressing.In these concrete steps, with change composition (prepreg or prepreg) and conductive foil pressing in the vacuum hotpressing machine of oven dry.Said conductive foil is selected for use and is comprised the electric conducting material that copper, silver, gold, aluminium or above-mentioned material alloy material etc. make.Because the price of copper product is relatively low, the conductive foil of therefore selecting for use copper to become is suitable for industrialization.
In order to be suitable for antenna system or some performance parameter requirements of electronic equipment, multi-disc prepreg or prepreg are carried out lamination formation multilayer layer pressing plate simultaneously.Use these laminated sheets and can effectively reduce the antenna recombination loss, and then guarantee the aerial radiation yield value.
Utilize above-mentioned composition, single-layer sheet prepreg or prepreg, multilayer layer pressing plate to be processed into antenna substrate, pcb board, copper-clad base plate, chip carrier spare or similar application part; Reduce the dielectric constant and the dielectric loss of above-mentioned product (antenna substrate, pcb board, copper-clad base plate, chip carrier spare or similar application part, single or multiple lift are pressed presser blade) through the form of introducing polarity and non-polar high polymer copolymer, thereby satisfy its demands of applications in electronic equipment.
Be illustrated in figure 5 as a kind of structural representation of CMMB device; This CMMB device is vehicle-mounted CMMB terminal 20; This CMMB terminal 20 comprises main frame (not shown), headrest cover 201, display screen 202, connecting rod 203, power line 204 and GPRS antenna 10; This vehicle-mounted CMMB terminal 20 is fixed on the upper end at seat through connecting rod 203; Headrest cover 201 coating vehicle-mounted CMMB terminal 20 main frame, GPRS antenna 10 and display screen 202 around, GPRS antenna 10 is placed on the inboard near vehicle window of headrest cover 201, so that receive and send the CMMB signal.
Combine accompanying drawing that 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; Make under the scope situation that aim of the present invention and claim protect not breaking away from, all within protection of the present invention.
Claims (10)
1. GPRS antenna; It is characterized in that; Said antenna comprises: a medium substrate, ground first radiating element and second radiating element, feed line, distributing point, earth connection and earth point are intervally arranged; Said first radiating element comprise be arranged in said medium substrate one surface first on first time harmonic oscillator on harmonic oscillator and another surface; Said second radiating element comprise be arranged in said medium substrate one surface second on second time harmonic oscillator on harmonic oscillator and another surface, said feed line connects on said first on the harmonic oscillator and second harmonic oscillator in said distributing point, said earth connection connects said first time harmonic oscillator and first time harmonic oscillator in said earth point; Said feed line both sides are provided with ground wire, and said ground wire is connected with said earth connection through some plated-through holes that run through said medium substrate.
2. GPRS antenna according to claim 1 is characterized in that, said first radiating element and the said second radiating element resonance band are 880MHz～960MHz and 1710MHz～1880MHz.
3. GPRS antenna according to claim 1 and 2 is characterized in that, on said first on the harmonic oscillator and said second harmonic oscillator identical.
4. GPRS antenna according to claim 3 is characterized in that, harmonic oscillator is the opening approximate U font of said distributing point dorsad on said first.
5. GPRS antenna according to claim 4 is characterized in that, on the harmonic oscillator and said second in the U-shaped opening of harmonic oscillator, fills some through holes that run through said medium substrate on said first identically.
6. GPRS antenna according to claim 4 is characterized in that, said first time harmonic oscillator is identical with said second time harmonic oscillator.
7. GPRS antenna according to claim 6; It is characterized in that; Said first time harmonic oscillator is the approximate U font of opening towards said distributing point, on said first on harmonic oscillator and the first time harmonic oscillator, said second end of the U font of harmonic oscillator and second time harmonic oscillator the projection interval on said medium substrate surface offset.
8. GPRS antenna according to claim 7 is characterized in that, in the U-shaped opening of said first time harmonic oscillator and said second time harmonic oscillator, fills some through holes that run through said medium substrate identically.
9. GPRS antenna according to claim 1 and 2 is characterized in that, on said first on the harmonic oscillator, said second harmonic oscillator, first time harmonic oscillator be identical approximate U font with said second time harmonic oscillator shape; On first on the harmonic oscillator and said second harmonic oscillator be the opening approximate U font of said distributing point dorsad; Said first time harmonic oscillator is the approximate U font of opening towards said distributing point; On said first on harmonic oscillator and the first time harmonic oscillator, said second end of the U font of harmonic oscillator and second time harmonic oscillator the projection interval on said medium substrate surface offset; On the harmonic oscillator, said second in the U-shaped opening of harmonic oscillator, said first time harmonic oscillator and said second time harmonic oscillator, fill some through holes that run through said medium substrate on first identically.
10. GPRS antenna according to claim 1 is characterized in that, said medium substrate component comprises glass cloth, epoxy resin and comprises the compound with said epoxy resin generation cross-linking reaction.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210132994.3A CN102683836B (en) | 2012-04-28 | 2012-04-28 | A kind of GPRS antenna |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210132994.3A CN102683836B (en) | 2012-04-28 | 2012-04-28 | A kind of GPRS antenna |
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| CN102683836A true CN102683836A (en) | 2012-09-19 |
| CN102683836B CN102683836B (en) | 2015-08-19 |
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| CN201210132994.3A Active CN102683836B (en) | 2012-04-28 | 2012-04-28 | A kind of GPRS antenna |
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| 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 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004077610A1 (en) * | 2003-02-28 | 2004-09-10 | Research In Motion Limited | Multiple-element antenna with wide-band antenna element |
| 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 |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004077610A1 (en) * | 2003-02-28 | 2004-09-10 | Research In Motion Limited | Multiple-element antenna with wide-band antenna element |
| 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 |
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Effective date of registration: 20210518 Address after: 2 / F, software building, No.9, Gaoxin Zhongyi Road, Nanshan District, Shenzhen City, Guangdong Province Patentee after: KUANG-CHI INSTITUTE OF ADVANCED TECHNOLOGY Address before: 18B, building a, CIC international business center, 1061 Xiangmei Road, Futian District, Shenzhen, Guangdong 518034 Patentee before: KUANG-CHI INNOVATIVE TECHNOLOGY Ltd. |