CN102570025A - Omni-directional radio frequency identification tag antenna and radio frequency identification tag - Google Patents
Omni-directional radio frequency identification tag antenna and radio frequency identification tag Download PDFInfo
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- CN102570025A CN102570025A CN2012100627803A CN201210062780A CN102570025A CN 102570025 A CN102570025 A CN 102570025A CN 2012100627803 A CN2012100627803 A CN 2012100627803A CN 201210062780 A CN201210062780 A CN 201210062780A CN 102570025 A CN102570025 A CN 102570025A
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- frequency identification
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q7/00—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/2208—Supports; Mounting means by structural association with other equipment or articles associated with components used in interrogation type services, i.e. in systems for information exchange between an interrogator/reader and a tag/transponder, e.g. in Radio Frequency Identification [RFID] systems
- H01Q1/2225—Supports; Mounting means by structural association with other equipment or articles associated with components used in interrogation type services, i.e. in systems for information exchange between an interrogator/reader and a tag/transponder, e.g. in Radio Frequency Identification [RFID] systems used in active tags, i.e. provided with its own power source or in passive tags, i.e. deriving power from RF signal
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Abstract
The invention provides an omni-directional radio frequency identification tag antenna, comprising a tag substrate, a resonance loop surface circuit pattern part, a circuit resonance arm surface circuit pattern part and four metal resonance arms, wherein the resonance loop surface circuit pattern part is arranged on the tag substrate and composed of at least one resonance loop; the circuit resonance arm surface circuit pattern part is arranged on the tag substrate and composed of at least two circuit resonance arms, the circuit resonance arms are connected with the resonance loop surface circuit pattern part and the circuit resonance arms correspond to each other pairwise and form a first plane radiation surface; four metal harmonic arms are all connected with the resonance loop surface circuit pattern part, correspond to each other pairwise and form a second plane radiation surface and a third plane radiation surface. The omni-directional radio frequency identification tag antenna has radiation surfaces on three coordinate axes and the corresponding radiation arms are uniformly distributed at phase points at intervals of 45 degrees, the generated antenna effective gain chart covers all the directions of the spherical surface, and thus the antenna is named a real omni-directional antenna.
Description
Technical field
The present invention relates to a kind of antenna of wireless radio frequency identification mark, particularly a kind of RFID antenna of omnidirectional.
Background technology
RFID is the abbreviation of radio RF recognition technology (Radio Frequency Identification); RFID is commonly called as electronic tag; The RFID technology is that of rising from nineteen nineties utilizes radiofrequency signal to carry out contactless two-way communication, automatically recognition objective object and obtain the wireless communication technology of relevant information.Along with progress of science and technology; RFID has related to the various aspects of people's daily life; Be widely used in various fields such as industrial automation, business automation, the management of traffic s operation control, for example the traffic surveillance and control system of train, Auto Express-way Toll Collector System, Item Management, the streamline production automation, gate control system, financial transaction, storehouse management, livestock management, vehicle anti-theft etc., RFID technology will become the basic technology that following information-intensive society is built.The most basic rfid system is made up of three parts: label (Tag), to form by coupling element and chip, and each label has unique electronic code, attached to identifying destination object on the object; Reader (Reader) reads the equipment of (can also write sometimes) label information, can be designed to hand-hold type or fixed; Antenna (Antenna) transmits radiofrequency signal between label and read write line.Antenna is a key component in the wireless telecommunication system as the equipment of a kind of reception and launching electromagnetic wave, and it is the interface of free space and transmission line.In the performance parameter of antenna, what have the greatest impact is its impedance matching, anti-interference, read range and directivity.
Antenna has different radiation or receiving ability to the space different directions, the directivity of Here it is antenna, and according to the difference of directivity, antenna has directed and two kinds of omnidirectionals.On scheming in the horizontal direction, directional antenna shows as the certain angle range of radiation; On height pattern, show as the wave beam of certain width, directional antenna generally is applied to communication distance in communication system far away, and coverage is little; Target density is big, the occasion that frequency efficiency is high.Show as 360 ° of all homogeneous radiations on omnidirectional antenna is schemed in the horizontal direction, on height pattern, show as the wave beam of certain width, its general applications distances in communication system is near, the occasion that coverage is big.
But the omni-directional of existing omnidirectional antenna only embodies in the horizontal direction, does not but have radiation (promptly radiation is zero on the axis direction of oscillator) in vertical direction, thereby is not " omnidirectional " truly, when using, causes certain limitation.
Summary of the invention
The purpose of this invention is to provide a kind of omni-directional radio frequency identification label antenna, be difficult to realize the truly problem of " omnidirectional " to solve existing antenna.
The present invention proposes a kind of omni-directional radio frequency identification label antenna, comprising:
One tag substrate;
One resonant tank face circuit pattern part is arranged on this tag substrate, and it further comprises at least one resonant tank;
One circuit resonance arm face circuit pattern part; Be arranged on this tag substrate, it further comprises at least two circuit resonance arms, and this circuit resonance arm partly links to each other with this resonant tank face circuit pattern; And this circuit resonance arm is corresponding in twos, and forms one first planar radiation face;
Four metal resonance arms all partly link to each other with this resonant tank face circuit pattern, and this metal resonance arm is corresponding in twos, and forms one second planar radiation face and one the 3rd planar radiation face.
Further, this first planar radiation face, this second planar radiation face are vertical mutually with the 3rd planar radiation face.
Further, this resonant tank face circuit pattern partly comprises:
One loop wire;
Four resonance connecting lines, an end all link to each other with this loop wire;
One label chip pad; It is provided with two ports; Each port comprises two electric connecting points again, and two electric connecting points of a port connect two resonance connecting line other ends respectively, forms a resonant tank with this loop wire; Two electric connecting points of another port connect two resonance connecting line other ends in addition respectively, form another resonant tank with this loop wire; The signal phase of two resonant tanks differs about 90 degree.
Be used to connect at least six radiation connecting lines of resonance arm, all link to each other with this loop wire.
Further, the quantity of this radiation connecting line is 8, and connects and be evenly distributed on the periphery of this loop wire with 45 ° angle.
Further, this circuit resonance arm face circuit pattern partly is provided with 4 circuit resonance arms, and 4 circuit resonance arms and 4 metal resonance arms are cross-linked on 8 radiation connecting lines.
Further, this metal resonance arm comprises 8 object lines, and 8 object lines join end to end successively.
The present invention also proposes a kind of RFID tag; Comprise a shell, a support, a reflecting surface and an omni-directional radio frequency identification label antenna, this reflecting surface setting is in the enclosure; This support is arranged on the reflecting surface, and this omni-directional radio frequency identification label antenna is arranged on this support.
Further, this reflecting surface is the bowl-type reflecting surface of diameter 125cm.
With respect to prior art; The invention has the beneficial effects as follows: omni-directional radio frequency identification label antenna of the present invention all has radiating surface in 3 reference axis; And corresponding radiation arm evenly distributes at every phase point at a distance from 45 degree; The antenna effective gain figure of its generation is contained all directions of sphere, can be called real omnidirectional antenna.
The actual gain of the another kind of RFID tag that the present invention proposes is with above-mentioned omni-directional radio frequency identification mark antenna reflection enhancement its surface and inner application at various media through reflecting surface.
Description of drawings
Fig. 1 surveys assembly drawing for a kind of axle that waits of omni-directional radio frequency identification label antenna of the present invention;
Fig. 2 is a kind of radial projection figure that waits of omni-directional radio frequency identification label antenna of the present invention;
Fig. 3 is the floor map of resonant tank face circuit pattern part part among Fig. 1;
Fig. 4 is the floor map of circuit resonance arm face circuit pattern part part among Fig. 1;
Fig. 5 is the structure chart of metal resonance arm among Fig. 1;
Fig. 6 depends on a kind of lip-deep end view for omni-directional radio frequency identification label antenna of the present invention;
Fig. 7 surveys assembly drawing for a kind of axle that waits of RFID tag of the present invention;
Fig. 8 is a kind of radial projection figure that waits of RFID tag of the present invention;
Fig. 9 is a kind of end view of RFID tag Installation And Test of the present invention;
Figure 10 is a kind of vertical view of RFID tag Installation And Test of the present invention.
Embodiment
Specify the present invention below in conjunction with accompanying drawing.
See also Fig. 1 and Fig. 2; It is respectively omni-directional radio frequency identification label antenna of the present invention a kind of wait axle survey assembly drawing and etc. radial projection figure; Omni-directional radio frequency identification label antenna comprises tag substrate O1, resonant tank face circuit pattern part X1, circuit resonance arm face circuit pattern part Y1 and four metal resonance arm F1, F2, F3, F4; Resonant tank face circuit pattern part X1 and circuit resonance arm face circuit pattern part Y1 all are arranged on the tag substrate O1, and four metal resonance arm F1, F2, F3, F4 all electrically connect with resonant tank face circuit pattern part X1.
See also Fig. 3; It is the floor map of resonant tank face circuit pattern part part among Fig. 1; Resonant tank face circuit pattern part X1 comprises loop wire C1; Four resonance connecting line B1, B2, B3, B4, eight radiation connecting line D1, D2, D3, D4, E1, E2, E3, E4, and label chip pad A1.
Label chip pad A1 is provided with two ports, and each port comprises two electric connecting points again, and it can weld the dual-port chips that company produced such as impinj.The pad of a tie point of first port is connected in the end of resonance connecting line B4; The other end connecting ring route C1 of resonance connecting line B4 is in phase point PF 1; And be connected to resonance connecting line B2 in phase point PF3 through loop wire C1; The resonance connecting line B2 other end connects the pad of another tie point of first port, thereby constitutes the resonant tank of first port.
The pad of a tie point of second port is connected in resonance connecting line B1; The other end connecting ring route C1 of resonance connecting line B1 is in phase point PF2; And be connected to resonance connecting line B3 in phase point PF4 through loop wire C1; The resonance connecting line B3 other end connects the pad of another tie point of second port, thereby constitutes the resonant tank of second port.
The signal phase of two resonant tanks differs about 90 degree.
Radiation connecting line D1 connecting ring route C1 is in phase point PF1; Radiation connecting line E1 connecting ring route C1 is in phase point PH1, and radiation connecting line D2 connecting ring route C1 is in phase point PF2, and radiation connecting line E2 connecting ring route C1 is in phase point PH2; Radiation connecting line D3 connecting ring route C1 is in phase point PF3; Radiation connecting line E3 connecting ring route C1 is in phase point PH3, and radiation connecting line D4 connecting ring route C1 is in phase point PF4, and radiation connecting line E4 connecting ring route C1 is in phase point PH4.Wherein, phase point is defined as: the central point with label chip pad A1 is the center of circle, the angular phase of 360 degree, and phase point PF1～PF4 differs 90 degree respectively, and phase point PH1～PH4 differs 90 degree respectively, and phase point PF1 and PH1 differ 45 degree.Promptly 8 radiation connecting line D1, D2, D3, D4, E1, E2, E3, E4 are evenly distributed on the periphery of loop wire C1 with 45 ° angle.
See also Fig. 4, it is the floor map of circuit resonance arm face circuit pattern part part among Fig. 1, and circuit resonance arm face circuit pattern part Y1 comprises four circuit resonance arm H1, H2, H3, H4.Circuit resonance arm H1 is connected to radiation connecting line E1 in phase point PH1; Circuit resonance arm H2 is connected to radiation connecting line E2 in phase point PH2; Circuit resonance arm H3 is connected to radiation connecting line E3 in phase point PH3, and circuit resonance arm H4 is connected to radiation connecting line E4 in phase point PH4.
Please combine referring to Fig. 1, Fig. 2 and Fig. 3; Metal resonance arm F1 is connected to radiation connecting line D1 in phase point PF1; Metal resonance arm F2 is connected to radiation connecting line D2 in phase point PF2; Metal resonance arm F3 is connected to radiation connecting line D3 in phase point PF3, and metal resonance arm F4 is connected to radiation connecting line D4 in phase point PF4.
This shows that in the present embodiment metal resonance arm F1 constitutes a radiating surface (being the aforesaid second planar radiation face) of label antenna corresponding to metal resonance arm F3 in the XZ plane.Metal resonance arm F2 constitutes a radiating surface (being aforesaid the 3rd planar radiation face) of label antenna corresponding to metal resonance arm F4 in the YZ plane.Circuit resonance arm H1 corresponding circuits resonance arm H3, circuit resonance arm H2 corresponding circuits resonance arm H4, the radiating surface (being the aforesaid first planar radiation face) of formation label antenna on the XY plane.Because label antenna all has radiating surface in 3 reference axis, and corresponding radiation arm evenly distributes at a distance from 45 phase points of spending every, and the antenna effective gain figure of its generation is contained all directions of sphere, can be called real omnidirectional antenna.
See also Fig. 5; It is the structure chart of metal resonance arm among Fig. 1; The metal resonance arm comprises 8 object line J1, J2, J3, J4, J5, J6, J7, J8, and the metal resonance arm is that 8 object lines join end to end successively by its size shape of the decision of the object line on its profile.Wherein, object line J1 is to the size of the distance decision resonance arm resonance frequency of object line J4.The metal resonance arm of the distance affects between the object line J5 of the metal resonance arm of one group of mutual correspondence is the capacitive component size in resonant tank.Object line J6 is to the size of the distance affects metal resonance arm capacitive component of object line J4.Object line J3 is to the metal resonance arm perceptual weight of the corresponding port of distance affects of object line J7.The effect length metal resonance arm perceptual weight of object line J2 and object line J8.
Omni-directional radio frequency identification label antenna applications of the present invention is very extensive, label antenna is wrapped in the spheroid, such as tennis; In the billiard ball; Can its aloft fly with the desktop rolling process in, all bring into play the effect of label antenna, operating distance can reach 0～3 meter; If use big gain reader can reach more than tens meters, enough cover whole tennis court.
Label antenna also can depend on certain surface; As shown in Figure 6, the type on surface can be high dielectric constant material surfaces such as the water surface, also can be electric conducting material surfaces such as metal; More can be advanced low-k materials surfaces such as foam; The surface of nearly all type through the distance L 1 of adjustment antenna body to the surface, reaches good action of radio distance.
The present invention also proposes a kind of RFID tag, sees also Fig. 7 and Fig. 8, its be respectively RFID tag a kind of wait axle survey assembly drawing and etc. radial projection figure.RFID tag comprises shell P1, support Z1, reflecting surface W1 and omni-directional radio frequency identification label antenna; Shell P1 set inside has one deck reflecting surface W1; The bowl-type reflecting surface of preferred diameter 125cm, support Z1 is arranged on the reflecting surface W1, and omni-directional radio frequency identification label antenna is arranged on the support Z1.Support Z1 can adopt elastomeric material (like sponge), playing the effect of buffering road shock, and makes label antenna keep certain distance to reflecting surface W1.
It is respectively a kind of end view and the vertical view of RFID tag Installation And Test to see also Fig. 9, Figure 10, and this RFID tag is arranged at ground, and distance A is the actual measuring distance of hand-held set to label antenna, and angle B is actual test angle.Through test, its use the circular polarization built-in aerial (3～4dBi) or external linear polarized antenna (5～6dBi), the distance A under the power 1W situation can reach about 0 to 3 meter.Angle B when distance A is 1.3 meters can reach more than 55～60 degree.Can increase circuit resonance arm and metal resonance arm area etc. and be improved through increasing the reflecting surface area on the performance, but be based on cost and performance consideration, preferably make the bowl type reflecting surface of diameter 125mm side-to-side dimensions.If on the label launch window of ground one deck ponding is arranged, the data of actual measurement can diminish a little, but do not influence the standard result of use.Test point among Figure 10 is the standard testing point, but test angle might not be corresponding each other with the phase point in Fig. 3 label.The used read write line of test can be equipped linear polarized antenna or circular polarized antenna among the figure.
This label can also use as swimming in undersurface label, needs just to guarantee that antenna body can not be too far away to the distance of the water surface.Otherwise be equivalent to directly in water, use, operating distance A can receive bigger influence.
Phase point among the present invention is divided into 45 degree with the angular phase 8 of 360 degree; But do not get rid of angle is not divided into more five equilibriums; Make label have more the multi resonant connecting line that shakes, to connect the resonance arm (radiant body) on more radiating surfaces, the radiation direction that makes omnidirectional antenna is more comprehensively with full.
More than disclosedly be merely several specific embodiment of the present invention, but the present invention is not limited thereto, any those skilled in the art can think variation, only otherwise exceed the said scope of appended claims, all should drop in protection scope of the present invention.
Claims (8)
1. an omni-directional radio frequency identification label antenna is characterized in that, comprising:
One tag substrate;
One resonant tank face circuit pattern part is arranged on this tag substrate, and it further comprises at least one resonant tank;
One circuit resonance arm face circuit pattern part; Be arranged on this tag substrate, it further comprises at least two circuit resonance arms, and this circuit resonance arm partly links to each other with this resonant tank face circuit pattern; And this circuit resonance arm is corresponding in twos, and forms one first planar radiation face;
Four metal resonance arms all partly link to each other with this resonant tank face circuit pattern, and this metal resonance arm is corresponding in twos, and forms one second planar radiation face and one the 3rd planar radiation face.
2. omni-directional radio frequency identification label antenna as claimed in claim 1 is characterized in that, this first planar radiation face, this second planar radiation face are vertical mutually with the 3rd planar radiation face.
3. omni-directional radio frequency identification label antenna as claimed in claim 1 is characterized in that, this resonant tank face circuit pattern partly comprises:
One loop wire;
Four resonance connecting lines, an end all link to each other with this loop wire;
One label chip pad; It is provided with two ports; Each port comprises two electric connecting points again, and two electric connecting points of a port connect two resonance connecting line other ends respectively, and forms a resonant tank with this loop wire; Two electric connecting points of another port connect two resonance connecting line other ends in addition respectively, and form another resonant tank with this loop wire;
Be used to connect at least six radiation connecting lines of resonance arm, all link to each other with this loop wire.
4. omni-directional radio frequency identification label antenna as claimed in claim 3 is characterized in that the quantity of this radiation connecting line is 8, and connects and be evenly distributed on the periphery of this loop wire with 45 ° angle.
5. omni-directional radio frequency identification label antenna as claimed in claim 4 is characterized in that, this circuit resonance arm face circuit pattern partly is provided with 4 circuit resonance arms, and 4 circuit resonance arms and 4 metal resonance arms are cross-linked on 8 radiation connecting lines.
6. omni-directional radio frequency identification label antenna as claimed in claim 1 is characterized in that this metal resonance arm comprises 8 object lines, and 8 object lines join end to end successively.
7. RFID tag; It is characterized in that; Comprise that a shell, a support reach just like each described omni-directional radio frequency identification label antenna of claim 1～6; This shell bottom surface is provided with one deck reflecting surface, and this support is arranged on the bottom surface of this shell, and this omni-directional radio frequency identification label antenna is arranged on this support.
8. ground as claimed in claim 7 RFID tag is characterized in that, this reflecting surface is the bowl-type reflecting surface of diameter 125cm.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210062780.3A CN102570025B (en) | 2012-03-12 | 2012-03-12 | Omni-directional radio frequency identification label antenna and RFID tag |
| PCT/CN2013/072380 WO2013135151A1 (en) | 2012-03-12 | 2013-03-11 | Omnidirectional radio-frequency identification tag antenna and radio-frequency identification tag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210062780.3A CN102570025B (en) | 2012-03-12 | 2012-03-12 | Omni-directional radio frequency identification label antenna and RFID tag |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102570025A true CN102570025A (en) | 2012-07-11 |
| CN102570025B CN102570025B (en) | 2016-12-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210062780.3A Expired - Fee Related CN102570025B (en) | 2012-03-12 | 2012-03-12 | Omni-directional radio frequency identification label antenna and RFID tag |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102570025B (en) |
| WO (1) | WO2013135151A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102760938A (en) * | 2012-07-20 | 2012-10-31 | 杨瑞典 | Enhanced omnidirectional antenna oscillator |
| WO2013135151A1 (en) * | 2012-03-12 | 2013-09-19 | 群淂数码科技（上海）有限公司 | Omnidirectional radio-frequency identification tag antenna and radio-frequency identification tag |
| CN110972417A (en) * | 2019-12-23 | 2020-04-07 | Oppo广东移动通信有限公司 | Wave-transparent shell assembly, preparation method thereof, antenna assembly and electronic equipment |
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| US20070080879A1 (en) * | 2005-09-26 | 2007-04-12 | Chan-Soo Shin | Electrical loop antenna with unidirectional and uniform current radiation source |
| CN101065880A (en) * | 2004-10-12 | 2007-10-31 | Ask股份有限公司 | Non-contact label with Y-shaped omnidirectional antenna |
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| AU2003273548A1 (en) * | 2002-06-04 | 2003-12-19 | Skycross, Inc. | Wideband printed monopole antenna |
| FR2904148B1 (en) * | 2006-07-21 | 2008-10-24 | Commissariat Energie Atomique | ISOTROPIC ANTENNA AND MEASURING SENSOR |
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| CN102570025B (en) * | 2012-03-12 | 2016-12-28 | 群淂数码科技（上海）有限公司 | Omni-directional radio frequency identification label antenna and RFID tag |
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2012
- 2012-03-12 CN CN201210062780.3A patent/CN102570025B/en not_active Expired - Fee Related
-
2013
- 2013-03-11 WO PCT/CN2013/072380 patent/WO2013135151A1/en active Application Filing
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| CN101065880A (en) * | 2004-10-12 | 2007-10-31 | Ask股份有限公司 | Non-contact label with Y-shaped omnidirectional antenna |
| US20070080879A1 (en) * | 2005-09-26 | 2007-04-12 | Chan-Soo Shin | Electrical loop antenna with unidirectional and uniform current radiation source |
| CN201789075U (en) * | 2010-09-08 | 2011-04-06 | 国民技术股份有限公司 | Radio frequency identification tag antenna device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2013135151A1 (en) * | 2012-03-12 | 2013-09-19 | 群淂数码科技（上海）有限公司 | Omnidirectional radio-frequency identification tag antenna and radio-frequency identification tag |
| CN102760938A (en) * | 2012-07-20 | 2012-10-31 | 杨瑞典 | Enhanced omnidirectional antenna oscillator |
| CN110972417A (en) * | 2019-12-23 | 2020-04-07 | Oppo广东移动通信有限公司 | Wave-transparent shell assembly, preparation method thereof, antenna assembly and electronic equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102570025B (en) | 2016-12-28 |
| WO2013135151A1 (en) | 2013-09-19 |
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