CN204189953U - Novel hand-held machine antenna - Google Patents
Novel hand-held machine antenna Download PDFInfo
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- CN204189953U CN204189953U CN201420696881.0U CN201420696881U CN204189953U CN 204189953 U CN204189953 U CN 204189953U CN 201420696881 U CN201420696881 U CN 201420696881U CN 204189953 U CN204189953 U CN 204189953U
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Abstract
The utility model provides a kind of Novel hand-held machine antenna, comprise radiant panel, reflecting plate is placed in the below of radiant panel, therebetween support foam is provided with, reflecting plate is multilayer resonance structure, radiant panel comprises dielectric-slab, the upper surface of dielectric-slab is provided with the becket that can form coupling capacitance effect between two, it dielectric-slab below becket is matching area, this region adopts the mode of the feed of parallel wire and symmetrical coupling capacitance-resistance, dielectric-slab upper, lower surface is equipped with two paving copper pasters near the position on base, the relative paving copper paster in two sides is connected by metallization via hole, two of parallel wire and upper surface spread copper paster and are communicated with respectively, two paving copper paster welding feeder lines of lower surface.The utility model is small-sized; Front and back are than relatively good; This antenna have employed the resonance structure that can suppress electromagnetic energy, effectively reduce antenna backward radiation, and impedance bandwidth is relatively good; This antenna adopts FR4 material, and easy batch machining, cost is low, easy for installation.
Description
Technical field
The utility model belongs to the communications field, and particularly relate to a kind of Novel hand-held machine antenna, it can be used on radio frequency identification (RFID), the commercial communication fields such as in-door covering.
Background technology
Current radio frequency identification (RFID) industry development quickly, all starts to be widely used in multiple fields of traffic, logistics, monitoring.Rfid system is made up of reader, reader antenna and label.Reader transmits to label, and label again reflected signal, to reader antenna, forms a complete communication link.In communication process, because the frequent putting position of label is irregular, therefore need reader antenna to be circular polarized antenna, can both effectively read the label putting different angles and position.The radiated electric field of circular polarized antenna rotates, and so just can communicate with the linear polarized antenna in any direction, and label is all generally linear polarization, such reader antenna just can carry out good communication with label.The industry related to due to RFID is a lot, and the space of some application scenarios is very little, therefore just needs much small-sized antenna, and wishes.And more existing RFID reader antenna sizes are often all very large, be not suitable for the application of actual application scenarios.Mostly some current miniature antennas are to adopt thick Filled Dielectrics, or add the way of dielectric constant of large substrates, these way costs are often very high, because the loss of medium is larger, gain can be lower, the front and back ratio of antenna neither be fine, and thick sheet material consistency is bad, is not suitable for batch production processing.
Utility model content
Problem to be solved in the utility model is to provide that a kind of size is little, the front and back of antenna hand-held set antenna more reasonable than relatively good, impedance bandwidth.
For solving the problem, the technical solution adopted in the utility model: a kind of Novel hand-held machine antenna, comprise radiant panel and reflecting plate, the below of described radiant panel is placed reflecting plate, edge between described radiant panel and described reflecting plate is provided with metal-free support foam, described reflecting plate is multilayer resonance structure, described radiant panel comprises dielectric-slab, the upper surface of described dielectric-slab is provided with the becket that can form coupling capacitance effect between two, it dielectric-slab below described becket is matching area, this region adopts the mode of the feed of parallel wire and symmetrical coupling capacitance-resistance, described dielectric-slab upper, lower surface is equipped with two paving copper pasters near the position on base, the relative paving copper paster in two sides is connected by metallization via hole, two of described parallel wire and upper surface spread copper paster and are communicated with respectively, two paving copper paster welding feeder lines of described lower surface.
Two described beckets are the paving copper radiation face of a pair wing shape, and described wing shape is relatively short trapezoidal of minor face.
The reflecting plate of described multilayer resonance structure comprises four laminates, the dielectric-slab upper surface of the first laminate is provided with multiple metal resonance block, the dielectric-slab upper surface of the second laminate is provided with multiple metal resonance block, third layer plate is metal ground layer, 4th laminate is dielectric-slab, have gap between each metal resonance block of the first and second laminates, the centre of each metal resonance block adopts metallization via hole to be connected to metal ground layer, and the metallization via hole of the first laminate and the second laminate is evenly crisscross arranged.
The dielectric-slab of described reflecting plate and described radiant panel all adopts FR4 material.
Described feeder line adopts aperture lines.
Described metallization via hole is through hole.
Shell is provided with outside described antenna.
The thickness of described first laminate and described third layer plate is less than the thickness of described second laminate.
The advantage that the utility model has and good effect are: 1. this antenna is small-sized, and whole antenna size only has 1/5 wavelength size, highly only has 1/30 wavelength, are the miniature antennas that size is very little; 2. the directionality of general small sized antenna is very poor, and front and back are than bad, and the front and back of this antenna ratio can reach 6dB (as Fig. 4), and front and back are than relatively good; 3. this antenna have employed the resonance structure that can suppress electromagnetic energy especially, effectively reduce antenna backward radiation, and impedance bandwidth is relatively good; 4. this antenna size is relatively little, excellent performance, and adopt FR4 material, easy batch machining, cost is low, easy for installation.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model radiant panel;
Fig. 2 is the structural representation of the utility model reflecting plate;
Fig. 3 is structural representation of the present utility model;
Fig. 4 is antenna pattern of the present utility model;
In figure: 1 radiant panel 2 reflecting plate 3 foam 11 becket 12 parallel wire 13 mates the metallization via hole that capacitance-resistance 14 spreads metallization via hole 221 second laminate of copper paster 21 first laminate 22 second laminate 23 third layer plate 24 the 4th laminate 25 metal resonance block 211 first laminate.
Embodiment
Now with reference to the accompanying drawings comparatively detailed description is carried out to the utility model, as Figure 1-4, Novel hand-held machine antenna of the present utility model comprises antenna-reflected plate 2, aerial radiation plate 1, coupling capacitance-resistance 13, antenna casing, the support foam 3 between radiant panel 1 and reflecting plate 2, connection feeder line.The radiant panel 1 of antenna itself can emittance effectively, reflecting plate 2 is placed in the below of radiant panel 1, reflecting plate 2 is through specially designed multilayer resonance structure, this structure can reduce the electromagnetic energy radiation in this direction (below radiant panel 1) effectively, thus reduce the antenna gain in this direction, thus improve the front and back ratio of antenna.And this reflecting plate 2 can not have an impact to the impedance bandwidth of antenna itself, and the thickness making this antenna to make is smaller, and the front and back of antenna are than relatively good, and impedance bandwidth is also wider.
Aerial radiation plate 1 (as Fig. 1), comprises dielectric-slab, the paving copper radiation face of dielectric-slab upper surface and the feed paving copper paster 14 on upper and lower surface.The paving copper radiation face of upper surface is the becket 11 of two wing shapes, can form coupling capacitance effect between the shape of these two wing shapes, can increase the impedance bandwidth of antenna.And each paving copper wing is the structure of annular, so also can play increase equivalent length, improve the effect of antenna impedance bandwidth.Are matching areas in the below of two copper rings, this region adopts the feeding classification of parallel wire 12, adopts the mode of symmetrical coupling capacitance-resistance 13, so also can play the effect increasing impedance bandwidth.The feed paving copper paster 14 of dielectric-slab lower surface is mainly used in the welding connecting feeder line, and the paving copper paster 14 on upper and lower surface is connected by metallization via hole.The dielectric-slab of radiant panel 1 adopts FR4 material, and the cost compare of this kind of material is low, is easy to processing.
Connect the mode that feeder line (not shown) adopts aperture lines, the heart yearn of aperture lines is welded on a pad (paving copper paster 14), ground wire is welded on another pad (paving copper paster 14), result in formation of effective Signal transmissions.This feeder line, between reflecting plate 2 and radiant panel 1, this makes it possible to save space, reduces the height dimension of antenna.
The reflecting plate 2 of antenna is 4 layer circuit boards (as Fig. 2), first laminate 2121 upper surface of this reflecting plate 2 is multiple periodic metal resonance blocks 25, be spaced a distance between each metal derby, and each metal derby meets certain dimensional requirement, corresponding certain resonance frequency (Distance geometry size is determined by frequency), the centre of each metal derby adopts metallization via hole to be connected in the metal ground layer of third layer.Second laminate 22 upper surface of this reflecting plate 2 is also all periodic metal resonance block 25, also be spaced a distance between each metal derby, also certain dimensional requirement is met, corresponding certain resonance frequency, the centre of each metal derby adopts metallization via hole to be connected to the metal of third layer on the ground.The third layer plate 23 of this reflecting plate 2 is metal ground layer.4th laminate 24 of this reflecting plate 2 does not have copper paving area.The metallization via hole 211,221 of this reflecting plate 2 is all through hole, and such processing and fabricating is more convenient.Define the resonance structure of the capacitor and inductor of equivalence between first, second and third laminate of this reflecting plate 2, can the backward energy of aerial radiation plate 1 be reduced a lot, thus performance is compared in the front and back can improving antenna.This resonance structure can not affect the impedance bandwidth characteristic of antenna itself simultaneously, excellent performance.Each dielectric-slab of this reflecting plate 2 also adopts FR4 material, be beneficial to the processing of circuit board, and cost compare is low.
The thickness of the first laminate 2121 and described third layer plate 23 is less than the thickness of described second laminate 22.Meet the processing technology requirement of circuit board, facilitate the processing of circuit board and ensure the quality of circuit board.
As Fig. 3, adopt foam 3 to support between antenna-reflected plate 2 and radiant panel 1, thus the spacing of two boards can be fixed.
The shell of antenna adopts the mode of supersonic welding to form shell, only reserves cable-through hole at interfaces of connecting wires place.Shell adopts ABS material.
As shown in Figure 1, antenna of the present utility model, comprise antenna substrate, described substrate comprises the paving copper radiation face of upper surface and middle dielectric-slab, because the applying frequency of RFID is lower, therefore adopt common FR4 sheet material, the feed of antenna adopts the mode of radio frequency aperture lines welding, the other end of feed line adopts radio frequency connector, is convenient to be connected with radio frequency veneer.
This patent relates to a kind of antenna of front and back than excellent performance of subminiature low cost, and this antenna size is very little, stable performance, and cost is very low, and only need with very thin common sheet material, the consistency making processing is fine.The occasion that various applied environment is very narrow and small can be applied to.
Above embodiment of the present utility model has been described in detail, but described content being only preferred embodiment of the present utility model, can not being considered to for limiting practical range of the present utility model.All equalizations done according to the utility model scope change and improve, and all should still belong within this patent covering scope.
Claims (8)
1. a Novel hand-held machine antenna, it is characterized in that: comprise radiant panel and reflecting plate, the below of described radiant panel is placed reflecting plate, edge between described radiant panel and described reflecting plate is provided with metal-free support foam, described reflecting plate is multilayer resonance structure, described radiant panel comprises dielectric-slab, the upper surface of described dielectric-slab is provided with the becket that can form coupling capacitance effect between two, it dielectric-slab below described becket is matching area, this region adopts the mode of the feed of parallel wire and symmetrical coupling capacitance-resistance, described dielectric-slab upper, lower surface is equipped with two paving copper pasters near the position on base, the relative paving copper paster in two sides is connected by metallization via hole, two of described parallel wire and upper surface spread copper paster and are communicated with respectively, two paving copper paster welding feeder lines of described lower surface.
2. Novel hand-held machine antenna according to claim 1, is characterized in that: two described beckets are the paving copper radiation face of a pair wing shape, and described wing shape is relatively short trapezoidal of minor face.
3. Novel hand-held machine antenna according to claim 1, it is characterized in that: the reflecting plate of described multilayer resonance structure comprises four laminates, the dielectric-slab upper surface of the first laminate is provided with multiple metal resonance block, the dielectric-slab upper surface of the second laminate is provided with multiple metal resonance block, third layer plate is metal ground layer, 4th laminate is dielectric-slab, gap is had between each metal resonance block of the first and second laminates, the centre of each metal resonance block adopts metallization via hole to be connected to metal ground layer, and the metallization via hole of the first laminate and the second laminate is evenly crisscross arranged.
4. Novel hand-held machine antenna according to claim 1, is characterized in that: the dielectric-slab of described reflecting plate and described radiant panel all adopts FR4 material.
5. Novel hand-held machine antenna according to claim 1, is characterized in that: described feeder line adopts aperture lines.
6. Novel hand-held machine antenna according to claim 3, is characterized in that: described metallization via hole is through hole.
7. the Novel hand-held machine antenna according to any one of claim 1-6, is characterized in that: be provided with shell outside described antenna.
8. Novel hand-held machine antenna according to claim 3, is characterized in that: the thickness of described first laminate and described third layer plate is less than the thickness of described second laminate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420696881.0U CN204189953U (en) | 2014-11-19 | 2014-11-19 | Novel hand-held machine antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420696881.0U CN204189953U (en) | 2014-11-19 | 2014-11-19 | Novel hand-held machine antenna |
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| Publication Number | Publication Date |
|---|---|
| CN204189953U true CN204189953U (en) | 2015-03-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420696881.0U Active CN204189953U (en) | 2014-11-19 | 2014-11-19 | Novel hand-held machine antenna |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104466374A (en) * | 2014-11-19 | 2015-03-25 | 天津中兴智联科技有限公司 | Novel handset antenna |
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2014
- 2014-11-19 CN CN201420696881.0U patent/CN204189953U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104466374A (en) * | 2014-11-19 | 2015-03-25 | 天津中兴智联科技有限公司 | Novel handset antenna |
| CN104466374B (en) * | 2014-11-19 | 2017-04-19 | 天津中兴智联科技有限公司 | Novel handset antenna |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: Room 401, building 12, east area, airport business park, No. 80, Huanhe North Road, free trade zone (Airport Economic Zone), Binhai New Area, Tianjin 300000 Patentee after: Gaoxing Zhilian Technology Co.,Ltd. Address before: 300308, Zhongxing Industrial base, 2 East seven, Airport Economic Zone, Tianjin Binhai New Area Patentee before: ZTE INTELLIGENT IOT TECHNOLOGY Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Room 401, building 12, East Airport Business Park, 80 Huanhe North Road, Tianjin Binhai New Area pilot free trade zone (Airport Economic Zone) Patentee after: Zte Intelligent Iot Technology Co.,Ltd. Address before: Room 401, building 12, East Airport Business Park, 80 Huanhe North Road, Tianjin Binhai New Area pilot free trade zone (Airport Economic Zone) Patentee before: Gaoxing Zhilian Technology Co.,Ltd. |