CN105244610A - External broadband 4G printed circuit board (PCB) antenna - Google Patents
External broadband 4G printed circuit board (PCB) antenna Download PDFInfo
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- CN105244610A CN105244610A CN201510658310.7A CN201510658310A CN105244610A CN 105244610 A CN105244610 A CN 105244610A CN 201510658310 A CN201510658310 A CN 201510658310A CN 105244610 A CN105244610 A CN 105244610A
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- radiating doublet
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Abstract
An external broadband 4G printed circuit board (PCB) antenna belongs to the technical field of wireless communication and comprises a PCB substrate, wherein a first radiation oscillator and a concave loop oscillator are printed at one side surface of the PCB substrate, the first radiation oscillator forms a central feeding line along a direction facing the concave loop oscillator in a width gradually changing manner, loop gaps are formed in the concave loop oscillator, the central feeding line and the loop gaps are synchronously and gradually changed to form a gradually-changing power split network, a feeding interface and a microstrip Balun are further arranged on the side surface of the PCB substrate, the feeding interface is electrically connected with the first radiation oscillator, the microstrip Balun is electrically connected with the concave loop oscillator, a second radiation oscillator and a third radiation oscillator are printed on the other side surface of the PCB substrate, and a first conduction hole, a second conduction hole and a third conduction hole are formed on the PCB substrate. The external broadband 4G PCB antenna has the advantages of small volume and excellent bandwidth property, can simultaneously cover frequency bands of 2Gm 3G and 4G, and is also endowed with omnidirectional radiation characteristic, and the production cost is reduced as well as favorable electric performance is achieved.
Description
Technical field
The invention belongs to wireless communication technique field, be specifically related to the external pcb board antenna of a kind of wideband 4G, 2G, 3G, 4G frequency range can be covered simultaneously.
Background technology
In recent years, global Mobile data consumption figure presented the trend that dramatization increases, and caused the key factor of this situation to be that mobile terminal device such as smart mobile phone and the quick of panel computer are popularized.Whole world Mobile data user wishes that their equipment Anywhere can high－speed networking in the whole world, and can smooth and easy work under various frequency range and agreement, this expectation brings huge burden to network and mobile terminal device, in mobile terminal device, antenna is the unique parts of interconnection network, optimizes antenna performance and becomes more and more important.Antenna be used as radio wave transmitting or receive a kind of can with the metal device of signal resonance, length and the wavelength of antenna are directly proportional, and frequency is higher, and wavelength is shorter, and it is shorter that antenna also just can do.Present mobile terminal device frequency is very high, it is very little that antenna becomes, therefore just antenna can be etched on PCB (English full name is: PrintedCircuitBoard, and Chinese is: printed circuit board) plate, to meet the demand of mobile terminal miniaturization.Current mobile network from 2G, 3G to 4G future development, traditional 2G, 3G exits use not yet simultaneously, popularizing therefore along with 4G mobile intelligent terminal, people propose higher Consumer's Experience demand to 4G mobile intelligent terminal equipment, require that existing mobile terminal device can cover 2G, 3G, 4G many frequency ranges simultaneously, the bandwidth of corresponding device antenna also wants non-constant width.But because the PCB motherboard size of mobile terminal device is limited, make antenna free space also be restricted, traditional PCB plate antenna cannot meet the demand that wideband covers, be especially difficult to realize compatible 2G, 3G frequency range when ensureing 4G frequency range.
In view of above-mentioned prior art, under limited antenna environment, how to realize the compatible with the band resource alleviating growing tension of 2G, 3G, 4G frequency range, the applicant has done useful design, and technical scheme described below produces under this background.
Summary of the invention
The object of the present invention is to provide the external pcb board antenna of a kind of wideband 4G, volume is little, bandwidth characteristic is excellent, can cover 2G, 3G, 4G frequency range simultaneously, while realizing superior electrical performance, reduce production cost.
The object of the invention is to reach like this, the external pcb board antenna of a kind of wideband 4G, it is characterized in that: comprise PCB substrate, described PCB substrate is at a side surface and the upper print being positioned at short transverse has the first radiating doublet, and matrix loop oscillator is printed with in the middle and lower part of the short transverse of same surface, the first described radiating doublet forms a center feed towards the direction of matrix loop oscillator with live width gradual manner, intermediate cavity on described matrix loop oscillator and around matrix loop oscillator is configured with loop gap, described center feed extends in the intermediate cavity of matrix loop oscillator, gradual change synchronous with loop gap, form gradual change power division network, PCB substrate is also provided with feeding interface and microstrip balun at this side surface, described feeding interface is electrically connected with the first radiating doublet by center feed, described microstrip balun is electrically connected with matrix loop oscillator, PCB substrate is on opposite side surface and the upper print being positioned at short transverse has the second radiating doublet, and the 3rd radiating doublet is printed with in the bottom of the short transverse of same surface, PCB substrate offers the first via on the top of short transverse, the first described via makes the first radiating doublet and the electrical connection of the second radiating doublet, PCB substrate offers the second via and the 3rd via in the bottom of short transverse, the second described via and the 3rd via distribute axisymmetricly, and make matrix loop oscillator and the electrical connection of the 3rd radiating doublet.
In a specific embodiment of the present invention, the shape of described microstrip balun, substantially in square, comprises cable establishment pad.
In another specific embodiment of the present invention, the first described radiating doublet and matrix loop oscillator are co-axial alignment; The second described radiating doublet and the 3rd radiating doublet are co-axial alignment.
In another specific embodiment of the present invention, described gradual change power division network is the gradual change power division network of balanced twin lead structure.
In another specific embodiment of the present invention, described feeding interface is feed pad.
Also have in a specific embodiment of the present invention, the length of the first described radiating doublet is 1/4th operation wavelengths of 0.7GHZ ~ 0.9GHZ resonance frequency.
More of the present invention and in a specific embodiment, the 3rd described radiating doublet adopts U-shaped structure.
In an of the present invention and then specific embodiment, the gradual change feature sizes of described center feed is at 2.5mm ~ 0.6mm.
Of the present invention again more and in a specific embodiment, the Variable rate in described loop gap is at 0.3mm ~ 0.8mm.
In an again of the present invention and then specific embodiment, described PCB substrate adopts the substrate of resistance to combustion of FR4 level.
The present invention is owing to have employed said structure, and compared with prior art, the beneficial effect had is: the first radiating doublet and matrix loop oscillator form gradual change power division network, can expand the beamwidth of antenna thus to cover 2G, 3G, 4G frequency range simultaneously; First radiating doublet and matrix loop oscillator are co-axial alignment, and antenna can be made to meet omnidirectional radiation characteristic; Utilize the uneven feed of microstrip balun that antenna can be made to possess excellent wideband operation characteristic; Adopt the PCB substrate with flame resistance as antenna carrier, consistency and the fail safe of batch production can be met, can also production cost be reduced simultaneously.
Accompanying drawing explanation
Fig. 1 is the front view of one embodiment of the invention.
Fig. 2 is the rearview of one embodiment of the invention.
Fig. 3 is the characteristic of VSWR figure of one embodiment of the invention.
In figure: 1.PCB base material, 11. first vias, 12. second vias, 13. the 3rd vias; 2. the first radiating doublet, 21. center feeds; 3. matrix loop oscillator, 31. loop gaps; 4. feeding interface; 5. microstrip balun; 6. the second radiating doublet; 7. the 3rd radiating doublet.
Embodiment
Technical spirit of the present invention and beneficial effect can be fully understood in order to make the public; applicant will describe in detail the specific embodiment of the present invention below by reference to the accompanying drawings; but applicant is not the restriction to technical scheme to the description of embodiment, any changing in the form rather than substance according to the present invention's design all should be considered as protection scope of the present invention.In describing the invention, it will be appreciated that, the orientation of the instruction such as term " " on ", D score, "front", "rear", "left", "right", " level " or position relationship are for based on position relationship shown in accompanying drawing; be convenient to describe the present invention and simplified characterization; instead of instruction or imply that there is specific orientation, therefore can not be interpreted as limitation of the present invention.In addition, term " first ", " second ", " the 3rd " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristic.
Refer to Fig. 1 and Fig. 2, the external pcb board antenna of a kind of wideband 4G, comprises PCB substrate 1, in order to consistency and the fail safe of satisfied batch production, described PCB substrate 1 adopts the substrate of resistance to combustion of FR4 level, and in the present embodiment, PCB substrate 1 is of a size of 102mm*17mm*1mm.Described PCB substrate 1 is at a side surface and the upper print being positioned at short transverse has the first radiating doublet 2, and is printed with matrix loop oscillator 3 in the middle and lower part of the short transverse of same surface.The first described radiating doublet 2 and matrix loop oscillator 3 are co-axial alignment relative to the central shaft of PCB substrate 1, and this arrangement can make antenna meet omnidirectional radiation characteristic.The length of the first described radiating doublet 2 is 1/4th operation wavelengths of 0.7GHZ ~ 0.9GHZ resonance frequency, by changing adjustable in length resonance frequency.First radiating doublet 2 forms a center feed 21 towards the direction of matrix loop oscillator 3 with live width gradual manner, and the intermediate cavity on described matrix loop oscillator 3 and around matrix loop oscillator 3 is configured with loop gap 31.Described center feed 21 extends in the intermediate cavity of matrix loop oscillator 3, gradual change synchronous with loop gap 31, forming gradual change power division network, for expanding the beamwidth of antenna, making antenna in limited space, realize the compatible with the band resource alleviating growing tension of 2G, 3G, 4G frequency range.In the present embodiment, the gradual change feature sizes of described center feed 21 is at 2.5mm ~ 0.6mm; The Variable rate in described loop gap 31 is at 0.3mm ~ 0.8mm, and described gradual change power division network is the gradual change power division network of balanced twin lead structure.PCB substrate 1 is also provided with feeding interface 4 and microstrip balun 5 at this side surface, and described feeding interface 4 is feed pad, and the shape of described microstrip balun 5, substantially in square, comprises cable establishment pad.Described feeding interface 4 is electrically connected with the first radiating doublet 2 by center feed 21, is also connected with the radiofrequency signal mouth of terminal equipment by radio frequency coaxial-cable simultaneously.Described microstrip balun 5 is electrically connected with matrix loop oscillator 3, and antenna connects radio frequency coaxial-cable by microstrip balun 5, and the unbalanced construction of coaxial cable is converted into balanced structure, can obtain excellent wideband operation characteristic thus.PCB substrate 1 is on opposite side surface and the upper print being positioned at short transverse has the second radiating doublet 6, and the 3rd radiating doublet 7 is printed with in the bottom of the short transverse of same surface, the second described radiating doublet 6 and the 3rd radiating doublet 7 are co-axial alignment relative to the central shaft of PCB substrate 1, in the present embodiment, the 3rd described radiating doublet 7 adopts U-shaped structure.PCB substrate 1 offers the first via 11 on the top of short transverse, and the first described via 11 makes the first radiating doublet 2 and the second radiating doublet 6 be electrically connected.PCB substrate 1 offers the second via 12 and the 3rd via 13 in the bottom of short transverse, the second described via 12 and the 3rd via 13 distribute axisymmetricly relative to the central shaft of PCB substrate 1.Matrix loop oscillator 3 and the 3rd radiating doublet 7 realize electrical connection by the second via 12 and the 3rd via 13.The diameter dimension of the first via 11, second via 12 and the 3rd via 13 is 0.8mm ~ 1mm, and medium via hole meets 50 ohms impedance match.
The frequency range of antenna support of the present invention is 2G, 3G, 4G, its frequency range covered, and low-frequency range is 700MHz ~ 960MHz, and high band is 1710MHz ~ 2690MHz.Fig. 3 illustrates the characteristic of VSWR figure of the present embodiment, and its standing-wave ratio is less than 1.5, meets the coupling requirement of 50 ohm.This antenna structure is simple, volume is little, and processing cost is low, relies on excellent wideband operation characteristic, can be widely used in supporting in the micro radio mobile terminal device of 2G, 3G, 4G operational frequency bandwidth.
Claims (10)
1. the external pcb board antenna of wideband 4G, it is characterized in that: comprise PCB substrate (1), described PCB substrate (1) is at a side surface and the upper print being positioned at short transverse has the first radiating doublet (2), and matrix loop oscillator (3) is printed with in the middle and lower part of the short transverse of same surface, described the first radiating doublet (2) forms a center feed (21) towards the direction of matrix loop oscillator (3) with live width gradual manner, described matrix loop oscillator (3) is upper and intermediate cavity around matrix loop oscillator (3) is configured with loop gap (31), described center feed (21) extends in the intermediate cavity of matrix loop oscillator (3), with loop gap (31) synchronous gradual change, form gradual change power division network, PCB substrate (1) is also provided with feeding interface (4) and microstrip balun (5) at this side surface, described feeding interface (4) is electrically connected with the first radiating doublet (2) by center feed (21), described microstrip balun (5) is electrically connected with matrix loop oscillator (3), PCB substrate (1) is on opposite side surface and the upper print being positioned at short transverse has the second radiating doublet (6), and the 3rd radiating doublet (7) is printed with in the bottom of the short transverse of same surface, PCB substrate (1) offers the first via (11) on the top of short transverse, described the first via (11) makes the first radiating doublet (2) and the second radiating doublet (6) electrical connection, PCB substrate (1) offers the second via (12) and the 3rd via (13) in the bottom of short transverse, described the second via (12) and the 3rd via (13) distribute axisymmetricly, and make matrix loop oscillator (3) and the electrical connection of the 3rd radiating doublet (7).
2. the external pcb board antenna of a kind of wideband 4G according to claim 1, is characterized in that the shape of described microstrip balun (5) is substantially in square, comprises cable establishment pad.
3. the external pcb board antenna of a kind of wideband 4G according to claim 1, is characterized in that described the first radiating doublet (2) and matrix loop oscillator (3) are in co-axial alignment; Described the second radiating doublet (6) and the 3rd radiating doublet (7) are in co-axial alignment.
4. the external pcb board antenna of a kind of wideband 4G according to claim 1, is characterized in that described gradual change power division network is the gradual change power division network of balanced twin lead structure.
5. the external pcb board antenna of a kind of wideband 4G according to claim 1, is characterized in that described feeding interface (4) is feed pad.
6. the external pcb board antenna of a kind of wideband 4G according to claim 1, is characterized in that the length of described the first radiating doublet (2) is 1/4th operation wavelengths of 0.7GHZ ~ 0.9GHZ resonance frequency.
7. the external pcb board antenna of a kind of wideband 4G according to claim 1, is characterized in that the 3rd described radiating doublet (7) adopts U-shaped structure.
8. the external pcb board antenna of a kind of wideband 4G according to claim 1, is characterized in that the gradual change feature sizes of described center feed (21) is at 2.5mm ~ 0.6mm.
9. the external pcb board antenna of a kind of wideband 4G according to claim 1, is characterized in that the Variable rate in described loop gap (31) is at 0.3mm ~ 0.8mm.
10. the external pcb board antenna of a kind of wideband 4G according to claim 1, is characterized in that described PCB substrate (1) adopts the substrate of resistance to combustion of FR4 level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510658310.7A CN105244610B (en) | 2015-10-12 | 2015-10-12 | A kind of external pcb board antennas of wideband 4G |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510658310.7A CN105244610B (en) | 2015-10-12 | 2015-10-12 | A kind of external pcb board antennas of wideband 4G |
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| CN105244610A true CN105244610A (en) | 2016-01-13 |
| CN105244610B CN105244610B (en) | 2018-03-27 |
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| CN201510658310.7A Active CN105244610B (en) | 2015-10-12 | 2015-10-12 | A kind of external pcb board antennas of wideband 4G |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106299596A (en) * | 2016-09-20 | 2017-01-04 | 深圳市中天迅通信技术有限公司 | A kind of POS Serpentis type antenna without frequency deviation |
| CN106450707A (en) * | 2016-12-16 | 2017-02-22 | 淮阴工学院 | Balun applicable to dipole antenna |
| CN106785402A (en) * | 2017-01-09 | 2017-05-31 | 江苏联海通信股份有限公司 | Ultra-thin switch type embellished antenna |
| CN107978864A (en) * | 2017-12-19 | 2018-05-01 | 福建省泉州华鸿通讯有限公司 | One kind miniaturization ultra-wideband, multiband public network interphone antenna |
| CN108072625A (en) * | 2016-11-18 | 2018-05-25 | 盛思锐股份公司 | Gas sensor module |
| CN110970717A (en) * | 2019-12-27 | 2020-04-07 | 耀登电通科技（昆山）有限公司 | Broadband Sub-6G external PCB antenna |
| CN112531336A (en) * | 2020-12-01 | 2021-03-19 | 科信成精密技术(江苏)有限公司 | Broadband 5G antenna |
| CN113675595A (en) * | 2021-07-14 | 2021-11-19 | 深圳市联洲国际技术有限公司 | Ultra-wideband mobile communication antenna |
| CN114709607A (en) * | 2022-03-31 | 2022-07-05 | 深圳市安拓浦科技有限公司 | Antenna unit and television antenna |
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| CN102110897A (en) * | 2010-12-19 | 2011-06-29 | 西安海天天线科技股份有限公司 | Micro-strip omnidirectional antenna used for mobile communication |
| US20150097748A1 (en) * | 2013-10-08 | 2015-04-09 | Pc-Tel, Inc. | Wide band lte antenna |
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| CN205016674U (en) * | 2015-10-12 | 2016-02-03 | 常熟泓淋电子有限公司 | External PCB board antenna of wide band 4G |
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Patent Citations (4)
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| CN102110897A (en) * | 2010-12-19 | 2011-06-29 | 西安海天天线科技股份有限公司 | Micro-strip omnidirectional antenna used for mobile communication |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106299596A (en) * | 2016-09-20 | 2017-01-04 | 深圳市中天迅通信技术有限公司 | A kind of POS Serpentis type antenna without frequency deviation |
| CN108072625A (en) * | 2016-11-18 | 2018-05-25 | 盛思锐股份公司 | Gas sensor module |
| CN108072625B (en) * | 2016-11-18 | 2022-09-27 | 盛思锐股份公司 | Gas sensor module |
| CN106450707A (en) * | 2016-12-16 | 2017-02-22 | 淮阴工学院 | Balun applicable to dipole antenna |
| CN106785402A (en) * | 2017-01-09 | 2017-05-31 | 江苏联海通信股份有限公司 | Ultra-thin switch type embellished antenna |
| CN107978864A (en) * | 2017-12-19 | 2018-05-01 | 福建省泉州华鸿通讯有限公司 | One kind miniaturization ultra-wideband, multiband public network interphone antenna |
| CN110970717A (en) * | 2019-12-27 | 2020-04-07 | 耀登电通科技（昆山）有限公司 | Broadband Sub-6G external PCB antenna |
| CN112531336A (en) * | 2020-12-01 | 2021-03-19 | 科信成精密技术(江苏)有限公司 | Broadband 5G antenna |
| CN113675595A (en) * | 2021-07-14 | 2021-11-19 | 深圳市联洲国际技术有限公司 | Ultra-wideband mobile communication antenna |
| CN114709607A (en) * | 2022-03-31 | 2022-07-05 | 深圳市安拓浦科技有限公司 | Antenna unit and television antenna |
| CN114709607B (en) * | 2022-03-31 | 2024-03-12 | 深圳市安拓浦科技有限公司 | Antenna unit and television antenna |
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| CN105244610B (en) | 2018-03-27 |
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Address after: 215500 Jiangsu city of Suzhou province Changshou City Yushan High-tech Industrial Park No. 8 Liuzhou Road Applicant after: CHANGSHU HONGBO COMMUNICATION TECHNOLOGY CO., LTD. Address before: 215500 Jiangsu city of Suzhou province Changshou City Yushan High-tech Industrial Park No. 8 Liuzhou Road Applicant before: Changshu Honglin Electronic Co., Ltd. |
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