CN102104194A - Subminiature external printed circuit board dual-frequency antenna - Google Patents
Subminiature external printed circuit board dual-frequency antenna Download PDFInfo
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- CN102104194A CN102104194A CN2010105851990A CN201010585199A CN102104194A CN 102104194 A CN102104194 A CN 102104194A CN 2010105851990 A CN2010105851990 A CN 2010105851990A CN 201010585199 A CN201010585199 A CN 201010585199A CN 102104194 A CN102104194 A CN 102104194A
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- circuit board
- pcb
- printed circuit
- dual
- metal routing
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Abstract
The invention discloses a subminiature external printed circuit board dual-frequency antenna. The subminiature external printed circuit board dual-frequency antenna comprises a printed circuit board (PBC), a coaxial cable and a connector, wherein a plurality of sections of metal wires are printed on the PCB; the coaxial cable is connected with the metal wires and the connector; the plurality of the metal wires comprise a radiation part metal wire, a short-circuit part metal wire and a grounding part metal wire; the radiation part metal wire consists of a plurality of sections of horizontal up and down bending lines which are bent from the left to the right and from the top to the bottom in turn; the tail end of each bending line is connected with a matching element and is connected with a core wire of the coaxial cable; the short-circuit part metal wire is positioned below the radiation part metal wire and consists of a plurality of the horizontal up and down bending wires from the left to the right and from the top to the bottom; and the short-circuit part metal wire is connected with a core wire shielding layer of the coaxial wire. The subminiature external printed circuit board dual-frequency antenna can further miniaturize the size of an antenna; the volume is smaller and smaller; and the performance and the universality of the antenna cannot be weakened.
Description
Technical field
The present invention relates to dual-band antenna, be specifically related to a kind of small-sized external printed circuit board (PCB) dual-band antenna.
Background technology
At present, be used for the antenna of Miniature Terminal (as fixed station etc.), antenna body typically uses copper
Pipe is as the dipole antenna form of radiant body, and that generally acknowledges in the R﹠D process exists some problems, and bigger as antenna size, cost is higher.Because the miniaturization demand of terminal antenna is more and more higher, and the requirement of antenna performance is not really reduced, caused in this type of Miniature Terminal antenna R﹠D process difficulty relatively, antenna efficiency is widely different, and antenna R﹠D and production cost is higher.The size of antenna, complexity, cost become the focus of contradiction.
At present, the unfixing and highly effective solution of this situation in the industry for the Miniature Terminal antenna, mostly takes to revise surface structure at present, and antenna form is shared, only the mode that antenna frequencies is finely tuned.Can take in the R﹠D process software emulation or repeatedly debugging optimize the antenna cabling, come the tuned antenna resonance frequency by changing copper pipe length, thereby improve the input impedance of antenna.But in that to run into terminal smaller, antenna space is required relatively stricter, cost requirement is than condition with higher, and above measure is usually powerless.And, the lifting of assurance communication appliance performance that can not be stable and the order of R﹠D process.This becomes a difficult problem of communication apparatus design industry.
The patent No. is that CN200710169250.8, publication number are that the patent of invention of CN101179151 discloses a kind of compact PCB antenna, and it comprises substrate; Be positioned at the ground connection on the substrate; Figure is engraved in the radiant element on the substrate; And figure is engraved in the short circuit paths on the substrate.Short circuit paths is extended from the breakout of radiant element.Wherein breakout defines first section and second section of radiant element; And first section feed-in pin (feed pin) that has at an end of first section, and second section be crooked.Wherein the short circuit paths between radiant element and ground connection centers on a part of second section and is connected to ground connection.The technique scheme complicated legal case a kind of a kind of solution scheme of little compact PCB antenna, but its volume and performance still can't meet the demands.
Summary of the invention
The problem that the present invention need solve provides that a kind of miniaturization, cost are low, the microminiature external printed circuit board (PCB) dual-band antenna of universal strong.
To achieve these goals, the present invention designs a kind of microminiature external printed circuit board (PCB) dual-band antenna, comprise pcb board, coaxial cable and connector, on the front of pcb board, be printed with the plurality of sections metal routing, coaxial cable is connected with connector with metal routing, described plurality of sections metal routing includes primary radiation part and grounding parts segmentation metal routing, described primary radiation segment section metal routing by from left to right from top to bottom the plurality of sections level of fold up and down folding line form, or by from right to left from top to bottom the plurality of sections level of fold up and down folding line form, be connected with matching element and be connected at the end of folding line with the heart yearn of coaxial cable; Described grounding parts segmentation metal routing is positioned at the below of primary radiation segment section cabling, by plurality of sections from left to right from top to bottom level up and down folding line form, this grounding parts segmentation metal routing is connected with the heart yearn screen of coaxial cable.
Be printed with the coupling unit metal level on the reverse side of described pcb board, described coupling unit metal level is and pcb board suspension metal level of the same size.
More preferably, described matching element is an electric capacity, and described electric capacity and Department of Radiation segmentation metal routing are connected in series, and its magnitude range is for being 3.3～4.7pf.
More preferably, the metal width of described Department of Radiation segmentation metal routing is that 0.3mm, gap are 0.3mm; The metal width of described grounding parts segmentation metal routing is that 0.3mm, gap are 0.3mm.
As the preferred version of this reality invention, the cross section of described pcb board is " trapezoidal ".
More enter ground, described pcb board is a double-layer circuit board, and circuit board thickness is 0.4mm or 0.8mm or 1mm or 2mm.
It is 1.13mm～1.37mm that coaxial cable described in the present invention adopts external diameter, and connector specification and antenna total length are determined the length of coaxial cable, only needs to guarantee that structure can connect just passable.
Connector described in the present invention is the connector that is used for Miniature Terminal of SMA or BNC or TNC.
Microminiature external printed circuit board (PCB) dual-band antenna of the present invention utilizes electromagnetic field and Antenna Design principle, shortens the antenna physical length by coiling, and the employing pcb board is that the Fr4 medium substrate of layer circuit board (ε=4.4) further dwindles antenna volume in pairs.Optimize antenna feed impedance by matching element, the coupling by ground strengthens the beamwidth of antenna again, thereby reaches needed performance.
The present invention has the following advantages:
1. make the further miniaturization of antenna, reduced antenna size greatly.
2. reduced the production cost of antenna.
3. improved the versatility of antenna.
Description of drawings:
Fig. 1 is the structural representation of microminiature external printed circuit board (PCB) dual-band antenna of the present invention;
Fig. 2 is the pcb board reverse side structural representation of microminiature external printed circuit board (PCB) dual-band antenna of the present invention.
Embodiment
For the ease of those skilled in the art's understanding, structural principle of the present invention is described in further detail below in conjunction with specific embodiment and accompanying drawing:
As shown in Figure 1, a kind of embodiment of microminiature external printed circuit board (PCB) dual-band antenna.It comprises pcb board 10, coaxial cable 5 and connector 8, on the front of pcb board 10, be printed with the plurality of sections metal routing, coaxial cable 5 is connected with connector 8 with metal routing, described plurality of sections metal routing includes primary radiation segment section metal routing 1 and grounding parts segmentation metal routing 2, described primary radiation segment section metal routing 1 by from left to right from top to bottom the plurality of sections level of fold up and down folding line form, be connected with matching element 4 and be connected at the end 11 of folding line with the heart yearn 6 of coaxial cable 5; Described grounding parts segmentation metal routing 2 is positioned at the below of primary radiation segment section metal routing 1, by plurality of sections from left to right from top to bottom level up and down folding line form, this grounding parts segmentation metal routing 2 is connected with the heart yearn screen 7 of coaxial cable.
As shown in Figure 2, be printed with coupling unit metal level 3 on the reverse side of described pcb board, described coupling unit metal level is and pcb board suspension metal level of the same size.
Described matching element is an electric capacity, and described electric capacity and Department of Radiation segmentation metal routing are connected in series, and its magnitude range is for being 3.3～4.7pf.In addition, matching element described here except capacity cell can also be and capacity cell similar functions or the electronic component of electric property or device, therefore, as long as adopted the element of identity function to be within protection scope of the present invention.
The metal width of described in the present embodiment Department of Radiation segmentation metal routing is that 0.3mm, gap are 0.3mm; The metal width of described grounding parts segmentation metal routing is that 0.3mm, gap are 0.3mm.
Pcb board in the present embodiment is a double-layer circuit board, and circuit board thickness is 0.4mm or 0.8mm or 1mm or 2mm.
It is 1.13mm～1.37mm that coaxial cable described in the present embodiment adopts external diameter, and connector specification and antenna total length are determined the length of coaxial cable, only needs to guarantee that structure can connect just passable.Described connector is the connector that is used for Miniature Terminal of SMA or BNC or TNC.
Operation principle of the present invention is: utilize electromagnetic field and Antenna Design principle, shorten the antenna physical length by coiling, and adopt Fr4 medium substrate (ε=4.4) further to dwindle antenna volume.Optimize antenna feed impedance by matching element, the coupling by ground strengthens the beamwidth of antenna again, thereby reaches needed performance.
Foregoing is preferred embodiment of the present invention only, is not to be used to limit embodiment of the present invention, and those skilled in the art are according to design of the present invention, and appropriate adaptation of having done or modification all should be within protection scope of the present invention.
Claims (8)
1. microminiature external printed circuit board (PCB) dual-band antenna, comprise pcb board, coaxial cable and connector, on the front of pcb board, be printed with the plurality of sections metal routing, coaxial cable is connected with connector with metal routing, it is characterized in that: described plurality of sections metal routing includes primary radiation part and grounding parts segmentation metal routing, described primary radiation segment section metal routing by from left to right from top to bottom the plurality of sections level of fold up and down folding line form, or by from right to left from top to bottom the plurality of sections level of fold up and down folding line form, be connected with matching element and be connected at the end of folding line with the heart yearn of coaxial cable; Described grounding parts segmentation metal routing is positioned at the below of primary radiation segment section cabling, by plurality of sections from left to right from top to bottom level up and down folding line form, this grounding parts segmentation metal routing is connected with the heart yearn screen of coaxial cable.
2. microminiature external printed circuit board (PCB) dual-band antenna according to claim 1 is characterized in that: be printed with the coupling unit metal level on the reverse side of described pcb board, described coupling unit metal level is and pcb board suspension metal level of the same size.
3. microminiature external printed circuit board (PCB) dual-band antenna according to claim 1 and 2, it is characterized in that: described matching element is an electric capacity, and described electric capacity and Department of Radiation segmentation metal routing are connected in series, and its magnitude range is for being 3.3～4.7pf.
4. microminiature external printed circuit board (PCB) dual-band antenna according to claim 3 is characterized in that: the metal width of described Department of Radiation segmentation metal routing is that 0.3mm, gap are 0.3mm; The metal width of described grounding parts segmentation metal routing is that 0.3mm, gap are 0.3mm.
5. microminiature external printed circuit board (PCB) dual-band antenna according to claim 4 is characterized in that: the cross section of described pcb board is " trapezoidal ".
6. microminiature external printed circuit board (PCB) dual-band antenna according to claim 5, it is characterized in that: described pcb board is a double-layer circuit board, circuit board thickness is 0.4mm or 0.8mm or 1mm or 2mm.
7. microminiature external printed circuit board (PCB) dual-band antenna according to claim 6 is characterized in that: it is 1.13mm～1.37mm that described coaxial cable adopts external diameter.
8. microminiature external printed circuit board (PCB) dual-band antenna according to claim 7 is characterized in that: described connector is the connector that is used for Miniature Terminal of SMA or BNC or TNC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105851990A CN102104194B (en) | 2010-12-13 | 2010-12-13 | Subminiature external printed circuit board dual-frequency antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105851990A CN102104194B (en) | 2010-12-13 | 2010-12-13 | Subminiature external printed circuit board dual-frequency antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102104194A true CN102104194A (en) | 2011-06-22 |
| CN102104194B CN102104194B (en) | 2013-06-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105851990A Expired - Fee Related CN102104194B (en) | 2010-12-13 | 2010-12-13 | Subminiature external printed circuit board dual-frequency antenna |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102522628A (en) * | 2011-12-09 | 2012-06-27 | 清华大学 | High gain bidirectional end-fire antenna array applied to mine and tunnel |
| CN103633438A (en) * | 2012-08-21 | 2014-03-12 | 鸿富锦精密工业（深圳）有限公司 | A double-frequency antenna |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1459887A (en) * | 2002-05-15 | 2003-12-03 | 株式会社可桑信息技术 | External microchip double frequency band aerial device |
| CN101179151A (en) * | 2006-11-07 | 2008-05-14 | 联发科技股份有限公司 | Compact PCB antenna |
| CN101202378A (en) * | 2006-12-15 | 2008-06-18 | 英业达股份有限公司 | Double frequency monopole antenna |
-
2010
- 2010-12-13 CN CN2010105851990A patent/CN102104194B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1459887A (en) * | 2002-05-15 | 2003-12-03 | 株式会社可桑信息技术 | External microchip double frequency band aerial device |
| CN101179151A (en) * | 2006-11-07 | 2008-05-14 | 联发科技股份有限公司 | Compact PCB antenna |
| CN101202378A (en) * | 2006-12-15 | 2008-06-18 | 英业达股份有限公司 | Double frequency monopole antenna |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102522628A (en) * | 2011-12-09 | 2012-06-27 | 清华大学 | High gain bidirectional end-fire antenna array applied to mine and tunnel |
| CN102522628B (en) * | 2011-12-09 | 2014-05-14 | 清华大学 | High gain bidirectional end-fire antenna array applied to mine and tunnel |
| CN103633438A (en) * | 2012-08-21 | 2014-03-12 | 鸿富锦精密工业（深圳）有限公司 | A double-frequency antenna |
| CN103633438B (en) * | 2012-08-21 | 2016-08-03 | 鸿富锦精密工业（深圳）有限公司 | Dual-band antenna |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102104194B (en) | 2013-06-19 |
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Denomination of invention: Subminiature external printed circuit board dual-frequency antenna Effective date of registration: 20171208 Granted publication date: 20130619 Pledgee: Pudong Shanghai Development Bank, Limited by Share Ltd Huizhou branch Pledgor: Huizhou Speed Wireless Technology Co., Ltd. Registration number: 2017440000171 |
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Granted publication date: 20130619 Termination date: 20191213 |
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| CF01 | Termination of patent right due to non-payment of annual fee |