CN201204254Y - Anti-metal electronic label antennae - Google Patents
Anti-metal electronic label antennae Download PDFInfo
- Publication number
- CN201204254Y CN201204254Y CNU2008200059221U CN200820005922U CN201204254Y CN 201204254 Y CN201204254 Y CN 201204254Y CN U2008200059221 U CNU2008200059221 U CN U2008200059221U CN 200820005922 U CN200820005922 U CN 200820005922U CN 201204254 Y CN201204254 Y CN 201204254Y
- Authority
- CN
- China
- Prior art keywords
- antenna
- arm
- electronic tag
- metal electronic
- dipole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Abstract
The utility model discloses a metal-resistant electronic label antenna with high gain and small dimension. The antenna is formed by combining microstrip antenna and dipole antenna, wherein, the microstrip antenna is composed of a floor (1) and a main radiator (2), the dipole antenna is composed of a first arm (2) and a second arm (3); the main radiator (2) of the microstrip antenna and the first arm (2) of the dipole antenna are of a same conductor; and the floor (1) of the microstrip antenna is in DC short-circuit with the second arm (3) of the dipole antenna. The antenna structure includes a bottom layer, a middle layer and a top layer, wherein, the bottom layer is the floor (1), the top layer includes two arms of the dipole antenna, the middle layer includes an FR4 substrate (4) and a through-hole (7), the substrate (4) is used to stuff the gap between the bottom layer and the top layer, while the through-hole is used for electrically connection of entities at both side of the substrate (4). The utility model is an ingenious combination of the microstrip antenna and the dipole antenna to realize that the electronic label can be directly attached to the metal surface.
Description
Technical field
The utility model belongs to the short-wave communication tedhnology field, relates in particular to a kind of metal electronic tag antenna.
Background technology
Anti-metal electronic tag is the more special label of a class applied environment.Such label is attached at the outer metallic surface of other object usually.Electronic tag by the encapsulation of label heart inlay and inlay outside for example plastic housing constitute.Label heart Inlay is made up of antenna and chip usually.Because present chip supplier can extensively provide electronic label chip for the tag manufacturer in the whole world, so the core competitiveness of electronic tag concentrates on the antenna aspect.
Present metal electronic tag antenna is generally dipole antenna in the hyperfrequency frequency range.Dipole antenna is made up of two isometric arms usually, and the material of antenna is generally good conductor, for example copper, aluminium.The radiation efficiency of dipole antenna is very high, is one of antenna type of using always, simultaneously also through being commonly used for the antenna element of array antenna.Owing to the influence of adjacent conductors, can cause the rapid deterioration of dipole-type metal electronic tag antenna performance, comprising that gain sharply reduces, and impedance changes sharply and the serious mismatch of chip, and electronic tag can't be worked.In order to solve this difficult problem, mainly contain two kinds of ways at present:
The distance of method one, increase electronic label antenna and attaching thing outer metallic surface reduces the influence of adjacent conductors electrode couple sub antenna, reaches the acceptable degree up to performance.Increase one deck dielectric material between antenna and the attaching thing metal surface, for example polymethyl methacrylate, polyvinyl chloride guarantee needed distance.At present, be generally 5mm to 10mm based on the anti-metal tag thickness of this design philosophy, and the length of antenna mostly surpassed 100mm, mostly be about 150mm, operating frequency is the 900MHz frequency range.
Method two increases one deck microwave absorbing material between the metal surface of antenna and attaching thing.This method is than preceding a kind of, and advantage is that the impedance of antenna is convenient to mate with chip.Its shortcoming comprises: thickness is bigger, is not less than 5mm; Length is bigger, has mostly surpassed 100mm, mostly is about 150mm, and operating frequency is the 900MHz frequency range.
More than the antennas of two kinds of methods design, gain can only reach usually-10dBi about in addition lower.Size just because of metal electronic tag antenna is big, gain is low, uses very inconvenience, thereby has limited the application of metal label in some fields, for example notebook computer management system.
The utility model content
The technical problems to be solved in the utility model provides a kind of height that gains, metal electronic tag antenna that size is little.
For solving the problems of the technologies described above, the utility model metal electronic tag antenna is by a microstrip antenna and a dipole antenna be combined into, and wherein microstrip antenna is made up of floor and main radiator, and dipole antenna is made up of antenna the first arm and antenna second arm; As the first arm of dipole antenna, both are same conductor to the main radiator of described microstrip antenna simultaneously; Direct-current short circuit between second arm of the floor of described microstrip antenna and described dipole antenna.
The structure of the utility model metal electronic tag antenna is divided into three layers of bottom, intermediate layer and top layers, and the floor of described microstrip antenna is at bottom, and the first arm of described dipole antenna and second arm are at top layer; The intermediate layer of this antenna comprises the high-frequency dielectric base material, and this base material is used to fill the space between bottom and the top layer.The preferred FR4 base material of this base material, the FR4 base material is an epoxy resin, adopts this kind base material more to help dwindling antenna size.Described antenna intermediate layer also comprises via hole, is used for the electrical connection between base material two side entities.
As a kind of improvement of the present utility model, the first arm of described dipole antenna and second arm form the version of distortion dipole antenna between the two not point-blank.
As further improvement, near the end of second of this antenna feed point, second o'clock of this antenna feed point on a metallic conductor with the floor direct-current short circuit of microstrip antenna on the first arm of described dipole antenna for first of the feedback point of this metal electronic tag antenna.
As further improving, described dipole antenna the first arm has a bending away from an end of antenna feed point to the described dipole antenna second arm direction.
The metal electronic tag antenna pattern that the utility model proposes is that microstrip antenna combines with the ingenious of dipole antenna, the part of the metal surface that attaches thing as antenna, effectively utilize this metal covering, make metal covering also participate in radiation, increased the swept area of antenna, make antenna that directivity and higher gain preferably be arranged, antenna and the distance that attaches between the thing metal surface no longer are main influencing factors.The utility model metal electronic tag antenna has realized that electronic tag can directly be attached at the metal surface, and size is little, applied range, stable performance, easy batch machining, easy for installation.
Description of drawings
Fig. 1 is the front view of metal electronic tag antenna;
Fig. 2 is the end view of metal electronic tag antenna;
Fig. 3 is that metal electronic tag antenna is positioned at the directional diagram (containing gain) that attaches the thing metal surface; Comprise the metal surface that attach thing in the antenna model this moment.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Fig. 1 is the front view of metal electronic tag antenna, and Fig. 2 is the end view of metal electronic tag antenna, and as shown in Figure 1 and Figure 2, this antenna is divided into three-decker: bottom, top layer, intermediate layer.Bottom is a complete metallic conductor, and Copper Foil for example forms the floor 1 of microstrip antenna.Top layer by three metallic conductors independent of each other for example Copper Foil form, two arms and a square pad 6 of comprising dipole antenna, the first arm 2 of this dipole antenna and the main radiator of microstrip antenna are same metallic conductor, this metallic conductor also is the main radiator of the utility model metal electronic tag antenna, and second arm 3 of this dipole antenna passes through the via hole direct-current short circuit between floor 1.There is second point 6 in the utility model metal electronic tag antenna feedback point on square pad 6 and floor 1 by the via hole direct-current short circuit on this square pad, an end of first point 5 close square pad 6 on dipole antenna the first arm 2 of this antenna feed point.Antenna feed point is represented the electrical connecting position of antenna and chip.The intermediate layer is no less than two via hole 7 by base material 4 and number and forms, and base material 4 adopts the FR4 base materials, i.e. epoxy resin, and the FR4 base material can effectively dwindle the size of antenna, and its thickness is 2.0mm; Via hole 7 is electric connecting members of 4 liang of side entities of base material.
Second arm 3 of main radiator and dipole antenna is not on same straight line, and is and asymmetric, and both form distortion dipole antenna form.Can know that according to the aerial radiation principle radiation impedance when antenna reaches certain value effectively radiation of this antenna later on, so the utility model adopts the distortion dipole to improve the radiation impedance of antenna.So the antenna that this distortion dipole antenna is the unsymmetric form of an approximate equilibrium dual feed in the embodiment of the invention is the electric field component mutual superposition on its horizontal direction.By method for vector analysis can be line current-carrying unit on many horizontal directions with this antenna form equivalence, so the main pole mode of this antenna form is a horizontal polarization.Among the utility model embodiment, the first arm 2 of dipole antenna and second arm 3 be arranged in parallel, the length of second arm 3 is about half of whole metal electronic tag antenna length, width is about half of whole metal electronic tag antenna width, can be by adjusting the length and the wide performance of regulating antenna of dipole antenna second arm 3; The length of dipole antenna the first arm 2 should take the length of whole metal electronic tag antenna as far as possible, and two ends can reserve 1 to 3mm, and the width of dipole antenna the first arm 2 is about 1/3rd of a whole metal electronic tag antenna width.Under the situation of entire antenna limited length, for example: 0.25 wavelength of the curtailment of antenna, dipole antenna the first arm 2 is out of shape to the direction bending of second arm 3 away from an end of feedback point, total length is increased, suitably regulate the length that dogleg section increases, can regulate the size of gain, resonance frequency and the impedance of antenna, thereby make antenna can resonance on required frequency, and the characteristic impedance that makes the impedance of antenna and chip reaches grips coupling altogether, make the energy of label chip pass on the antenna, launch by antenna again with minimal losses.Regulate these corresponding antenna parameters and obtain a desirable metal electronic tag antenna at last.Connect the via hole of microstrip antenna floor 1 and dipole antenna second arm 3, should guarantee that floor 1 adds that the electrical length of dipole antenna second arm 3 is long as far as possible.
Whole metal electronic tag be designed and sized to 64mm*32mm*3mm, the form of labeling is adopted in its encapsulation.The length of side of the square pad 6 at second point 6 place of antenna feed point is designed to 2mm*2mm, and the distance of the rightmost edges of its Edge Distance entire antenna right side edges of boards, dipole antenna the first arm 2, dipole electric wire second arm 3 top edges is 1mm.
In the microstrip antenna of floor 1 and main radiator composition, floor 1 and main radiator form radiation jointly, and the effect that is similar to reflective mirror in the flashlight is also played on floor 1 simultaneously, and reflective mirror is big more, the pack ability is strong more, and then the place ahead will be brighter.When microstrip antenna kept clear of other conductor, it has a less reflective mirror that carries was the floor; When it when other conductors, be equivalent to obtain a bigger reflective mirror, promptly gain thereby obtain higher brightness in the floor that is equivalent to increase.The size on floor has influenced the directional diagram of antenna, thereby influences gain.Simultaneously, when dipole antenna has also been eliminated on floor 1 near other conductor, the rapid variation of input impedance.
The metal electronic tag antenna pattern that the utility model proposes is that microstrip antenna combines with the ingenious of dipole antenna, the part of the metal surface that attaches thing as antenna, effectively utilize this metal covering, make metal covering also participate in radiation, increased the swept area of antenna, made antenna that directivity and higher gain preferably be arranged, common dipole label antenna directive gain is generally 2 to 3dBi, and the label of the utility model design can reach 7.11dBi, sees Fig. 3 for details.Antenna and the distance that attaches between the thing metal surface no longer are main influencing factors.The utility model metal electronic tag antenna has realized that electronic tag can directly be attached at the metal surface, and size is little, applied range, stable performance, easy batch machining, easy for installation.
Adopt the anti-metal electronic tag encapsulation process of the utility model metal electronic tag antenna to be: shape and the size of at first determining antenna substrate 4, at this substrate front side Copper Foil silk-screen metal electronic tag antenna, reverse side is also used Copper Foil silk-screen ground plane antenna part then; Then chip is fixed on metal electronic tag antenna nation; One deck double faced adhesive tape is sticked at the label ground plate back side again, during installation the paper on glue surface is torn, and can directly label be affixed on the metal surface.
Above-described specific embodiment, the purpose of this utility model, technical scheme and beneficial effect are further described, institute it should be noted, the above only is a specific embodiment of the utility model, and those skilled in the art can carry out various changes and modification to the utility model and not break away from spirit and scope of the present utility model.Like this, if of the present utility model these are revised and modification belongs within the scope of the technical scheme of the utility model claim record and equivalent technologies thereof, then the utility model also is intended to comprise these changes and modification interior.
Claims (8)
1, a kind of metal electronic tag antenna, it is characterized in that: this metal electronic tag antenna is by a microstrip antenna and a dipole antenna be combined into, wherein microstrip antenna is made up of floor (1) and main radiator (2), and dipole antenna is made up of antenna the first arm (2) and antenna second arm (3);
The main radiator of described microstrip antenna and the first arm of described dipole antenna (2) are same metallic conductor;
Direct-current short circuit between second arm (3) of floor of described microstrip antenna (1) and described dipole antenna.
2, metal electronic tag antenna according to claim 1, it is characterized in that: the structure of this antenna is divided into three layers of bottom, intermediate layer and top layers, the floor of described microstrip antenna (1) is at bottom, and the first arm of described dipole antenna (2) and second arm (3) are at top layer;
The intermediate layer of this antenna comprises high-frequency dielectric base material (4), and this base material is used to fill the space between bottom and the top layer.
3, metal electronic tag antenna according to claim 2 is characterized in that: described base material is FR4 base material, i.e. epoxy resin.
4, metal electronic tag antenna according to claim 2 is characterized in that: described antenna intermediate layer also comprises via hole (7), and this via hole is used for the electrical connection between described base material (4) two side entities.
5, according to each described metal electronic tag antenna in the claim 1 to 4, it is characterized in that: the first arm of described dipole antenna (2) and second arm (3) are not point-blank.
6, metal electronic tag antenna according to claim 5, it is characterized in that: first point (5) of the feedback point of this metal electronic tag antenna is gone up a end near this antenna feed point second point (6) at the first arm (2) of described dipole antenna, and second point (6) of this antenna feed point is on a metallic conductor with floor (1) direct-current short circuit.
7, metal electronic tag antenna according to claim 6 is characterized in that: the metallic conductor at second point (6) place of described antenna feed point is a square pad.
8, metal electronic tag antenna according to claim 6 is characterized in that: described dipole antenna the first arm (2) has a bending away from an end of antenna feed point to described dipole antenna second arm (3) direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200059221U CN201204254Y (en) | 2008-03-03 | 2008-03-03 | Anti-metal electronic label antennae |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200059221U CN201204254Y (en) | 2008-03-03 | 2008-03-03 | Anti-metal electronic label antennae |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201204254Y true CN201204254Y (en) | 2009-03-04 |
Family
ID=40426569
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200059221U Expired - Lifetime CN201204254Y (en) | 2008-03-03 | 2008-03-03 | Anti-metal electronic label antennae |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201204254Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102244524A (en) * | 2010-05-10 | 2011-11-16 | 财团法人工业技术研究院 | Mobile communication device |
| CN101527390B (en) * | 2008-03-03 | 2013-06-12 | 中兴通讯股份有限公司 | Metal electronic tag antenna |
| CN103246917A (en) * | 2012-02-14 | 2013-08-14 | 中兴通讯股份有限公司 | RFID (Radio Frequency Identification) |
-
2008
- 2008-03-03 CN CNU2008200059221U patent/CN201204254Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101527390B (en) * | 2008-03-03 | 2013-06-12 | 中兴通讯股份有限公司 | Metal electronic tag antenna |
| CN102244524A (en) * | 2010-05-10 | 2011-11-16 | 财团法人工业技术研究院 | Mobile communication device |
| CN103246917A (en) * | 2012-02-14 | 2013-08-14 | 中兴通讯股份有限公司 | RFID (Radio Frequency Identification) |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101527390B (en) | Metal electronic tag antenna | |
| US10581171B2 (en) | Antenna element structure suitable for 5G mobile terminal devices | |
| CN106299664A (en) | A kind of polarization restructural magnetoelectricity dipole antenna | |
| CN105514599A (en) | Ultrahigh frequency electronic tag antenna | |
| CN110518333A (en) | Antenna oscillator, aerial array and base station | |
| CN102820531A (en) | RFID (radio frequency identification) tag antenna with compensation structure, RFID tag and system | |
| CN201204254Y (en) | Anti-metal electronic label antennae | |
| CN107104267A (en) | A kind of RFID paster antennas of embedded couple feed | |
| CN209282402U (en) | A kind of bluetooth headset pcb board load antenna | |
| CN204885430U (en) | Small -size 433MHzFPC antenna | |
| CN102664305B (en) | FM (frequency modulation) antenna and cellphone | |
| CN202870872U (en) | Electronic tag | |
| CN201450115U (en) | Dual-polarization antenna oscillator | |
| CN202205887U (en) | RFID tag antenna with compensation structure, RFID tag and RFID system | |
| CN201374076Y (en) | Metal electronic tag adopting short-circuit microstrip antenna | |
| CN102882541B (en) | A kind of wireless communication apparatus being integrated in pcb board | |
| CN202102474U (en) | Subminiaturized passive anti-metal radio frequency identification label | |
| CN113036457B (en) | Flexible antenna array based on microwave energy transmission | |
| CN211907697U (en) | Conformal electric scanning array antenna | |
| CN201243083Y (en) | Electronic label antenna and electronic label employing the antenna | |
| CN201450097U (en) | Identity radio frequency identification antenna | |
| US8269681B2 (en) | Sheet-like dipole antenna | |
| CN102882540B (en) | Wireless communication system based on SOC (System on Chip) | |
| CN206370498U (en) | A kind of low slim all-around top absorbing antenna of passive intermodulation ultra-wideband | |
| CN201570586U (en) | Antenna device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160909 Address after: 300308 Tianjin Airport Economic Zone, Binhai New Area seven East Road No. 2 Zhongxing Industrial Base Patentee after: ZTE INTELLIGENT IOT TECHNOLOGY CO., LTD. Address before: 518057, Nanshan District high tech Industrial Park, Guangdong province Shenzhen science and technology south road Zhongxing building A block 5 Patentee before: ZTE Corporation |
|
| CX01 | Expiry of patent term |
Granted publication date: 20090304 |
|
| CX01 | Expiry of patent term |