CN201984510U - Novel UHF-RFID metal resistant label of which size can be reduced and antenna - Google Patents
Novel UHF-RFID metal resistant label of which size can be reduced and antenna Download PDFInfo
- Publication number
- CN201984510U CN201984510U CN2011200303453U CN201120030345U CN201984510U CN 201984510 U CN201984510 U CN 201984510U CN 2011200303453 U CN2011200303453 U CN 2011200303453U CN 201120030345 U CN201120030345 U CN 201120030345U CN 201984510 U CN201984510 U CN 201984510U
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- electrode layer
- ground plane
- radiation electrode
- chip
- metal strip
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Abstract
A novel UHF-RFID metal resistant label of which size can be reduced comprises an antenna and an IC chip, wherein the antenna further comprises a dielectric substrate; a ground plane is arranged on one surface of the dielectric substrate; a radiation electrode layer is arranged on a surface corresponding to the surface on which the ground plane is arranged; the radiation electrode layer is connected with the RF port of the IC chip through a first feed line; the ground plane is directly connected with the GND port of the IC chip or connected with the GND port of the IC chip through a second feed line; at least a conductive metal strip is arranged between the radiation electrode layer and the ground plane and enables the radiation electrode layer to be connected with the ground plane; the width of the conductive metal strip is smaller than 1 cm; and the first feed line, the second feed line and the conductive metal strip are arranged on the same side surface. The novel UHF-RFID metal resistant label can reduce the size of the antenna and the size of the label.
Description
Technical field
The utility model relates to RFID (radio frequency identification) label, relates in particular to a kind of UHF (ultrahigh frequency, UHF-U1tra High Frequency) RFID label.
Background technology
Radio-frequency recognition system is made of three parts such as read write line (Reader), radio-frequency (RF) tag (RFID Tag) and operating systems usually.Attached to the have an agreement electronic data of form of the radio-frequency (RF) tag internal memory on the object to be identified, as the sign information of article to be identified.The electronic data that read write line can contactlessly be read in the label to be deposited or information write label, thus realize automatic identification and management to each type objects.Read write line and radio-frequency (RF) tag communication protocol by appointment adopts advanced radio-frequency technique mutual communication, and basic communication process is as follows: the label in (1) read write line reach receives the carrier energy that read write line sends, electrification reset; (2) label receives order that read write line the sends line operate of going forward side by side; (3) read write line sends and selects and take inventory order label is discerned, and selected single label carries out communication, and all the other labels temporarily are in dormant state; (4) label that is identified is carried out the visit order that read write line sends, and sends data message by the backscattered modulation mode to read write line, enters sleep state, after this no longer read write line is replied; (5) read write line continues search to remaining label, and repetition (3) (4) are waken single label respectively up and read, until identifying all labels.
At least include antenna and IC chip on each label.Store electronic data on the IC chip, and the performance of antenna there is critical effect to the working index of whole radio-frequency recognition system.The UHF RFID label antenna of existing a kind of anti-metal is on a thin-medium substrate, enclose thin metal layer as ground plane in the one side of this substrate, the another side on opposite is made the metal patch (being the radiation electrode layer) of definite shape with photoetching corrosion or method of printing, the antenna that utilizes microstrip line or probe that the paster feed is constituted, above the metal patch of this substrate or side or bottom the IC chip is set, the IC chip is connected with metal patch and ground plane by microstrip line or probe etc.
Described radiation electrode layer is connected with the RF port of IC chip by microstrip line or probe, and described ground plane passes through one section metal level or directly is connected with the GND port of IC chip.Existing antenna and wavelength generally exist direct relation, such as, a kind of antenna requires to be of a size of 1/2nd of waveguide wavelength, and promptly waveguide wavelength has the factor of decision to the size of antenna.General, there is a kind of method promptly to adopt the high dielectric-constant dielectric material, reduce waveguide wavelength as high-dielectric-constant ceramics, thereby reduce antenna and label sizes.But the use meeting of high dielectric-constant dielectric material improves cost of products greatly.
The utility model content
The purpose of this utility model is to provide a kind of novel UHF_RFID anti-metal tag that can be reduced in size, size with antenna in the label in the solution prior art is relevant with waveguide wavelength, can not reduce the size of antenna, and then the technical matters of influence reduction label sizes.
Another purpose of the present utility model is to provide a kind of antenna, and is relevant with waveguide wavelength with the size of antenna in the label in the solution prior art, the size that can not reduce antenna, and then the technical matters of influence reduction label sizes.
A kind of novel UHF_RFID anti-metal tag that can be reduced in size, comprise antenna and IC chip, described antenna further comprises dielectric substrate, the one side of dielectric substrate is provided with ground plane, the radiation electrode layer is set on its corresponding surface, described radiation electrode layer is connected with the RF port of IC chip by first feeder line, described ground plane directly or by second feeder line is connected with the GND port of IC chip, between described radiation electrode layer and the ground plane at least one conductiving metal strip is set, make the radiation electrode layer be connected by described conductiving metal strip with ground plane, the width of conductiving metal strip is less than 1cm, and, first feeder line, second feeder line and conductiving metal strip are arranged on the same side.
Preferably, described radiation electrode layer is connected with the RF port of IC chip by one section metal level.
Preferably, described IC chip be arranged on dielectric substrate the side or above.
A kind of novel UHF_RFID anti-metal tag that can be reduced in size, comprise antenna and IC chip, described antenna further comprises dielectric substrate, the one side of dielectric substrate is provided with ground plane, the radiation electrode layer is set on its corresponding surface, described radiation electrode layer is connected with the RF port of IC chip by first feeder line, described ground plane or directly be connected with the GND port of IC chip by second feeder line, between described radiation electrode layer and the ground plane at least one inductance is set, make the radiation electrode layer be connected by described inductance with ground plane, the width of conductiving metal strip is less than 1cm, and, first feeder line, second feeder line and conductiving metal strip are arranged on the same side.
A kind of antenna, described antenna further comprises dielectric substrate, the one side of dielectric substrate is provided with ground plane, the radiation electrode layer is set on its corresponding surface, described radiation electrode layer is connected with the IC chip by first feeder line, described ground plane passes through one section metal level or directly is connected with the IC chip by second feeder line, between described radiation electrode layer and the ground plane at least one conductiving metal strip/inductance is set, make the radiation electrode layer directly be connected by described bonding jumper/inductance with ground plane, the width of conductiving metal strip is less than 1cm, and, first feeder line, second feeder line and conductiving metal strip are arranged on the same side.
Preferably, described conductiving metal strip/inductance is arranged on the side or the inside of dielectric substrate.
Described conductiving metal strip/inductance be arranged on dielectric substrate the side or above.
Compared with prior art, the utlity model has following advantage: the utility model can reduce the size of antenna and label, and first feeder line, second feeder line and conductiving metal strip are arranged on the same side, like this, installs very convenient.Be particularly suitable for operating personnel's installation, maintenance, also have, our experiments show that, the width of conductiving metal strip also has the conducting effect, and has better electric property during less than 1cm.And, when having only width, could make things convenient for first feeder line, second feeder line and conductiving metal strip are arranged on the same side less than 1cm, make layout more reasonable.
Description of drawings
Fig. 1 is a kind of a certain side schematic view of principle of novel UHF_RFID anti-metal tag that can be reduced in size;
Fig. 2 is the impedance analysis figure of design concept in Smith chart of antenna;
Fig. 3 is the schematic diagram of the utility model label design.
Embodiment
Embodiment one
See also Fig. 1, it is a kind of a certain side schematic view of novel UHF_RFID anti-metal tag that can be reduced in size, comprise antenna and IC chip 14, described antenna further comprises dielectric substrate 11, the one side of dielectric substrate 11 is provided with ground plane 13, radiation electrode layer 12 is set on its corresponding surface, described radiation electrode layer 12 is connected with the RF port of IC chip 14 by first feeder line, described ground plane 13 directly or by second feeder line is connected with the GND port of IC chip 14, at least one conductiving metal strip 15 is set between described radiation electrode layer 12 and the ground plane 13, makes radiation electrode layer 12 be connected with ground plane 13 by described bonding jumper 15.
Described conductiving metal strip 15 can be metal material, can reach radiation electrode layer 12 and get final product with the effect that ground plane 13 is connected, and this conductiving metal strip 15 mainly is a metal material, also can be other better conductivity material.Conductiving metal strip 15 can be a strip, also can be wire, also can be irregularly shaped, as long as make radiation electrode layer 12 be connected with ground plane 13.
On general, described conductiving metal strip 15 is arranged on the side or inside of dielectric substrate 11, when conductiving metal strip 15 is one, can be arranged on any one side of dielectric substrate 11.When conductiving metal strip 15 is many, can only be arranged on the side of dielectric substrate 11, also can be separately positioned on the side of different dielectric substrate 11.Conductiving metal strip 15 can utilize technology to make to the inside of dielectric substrate 11.In this example, conductiving metal strip 15 operated by rotary motion are in same side.
The width of conductiving metal strip 15 is less than 1cm, and first feeder line, second feeder line and conductiving metal strip are arranged on the same side.First feeder line, second feeder line and conductiving metal strip are arranged on the same side, like this, install very convenient.Be particularly suitable for operating personnel's installation, maintenance, also have, our experiments show that, the width of conductiving metal strip also has the conducting effect, and has better electric property during less than 1cm.And, when having only width, could make things convenient for first feeder line, second feeder line and conductiving metal strip are arranged on the same side less than 1cm, make layout more reasonable.When conductiving metal strip 15 is many, can be set up in parallel in same side such design, the convenient installation, the also convenient bar number that increases and decreases conductiving metal strip 15 according to the specific requirement of antenna.
See also Fig. 2, in the operation curve in Smith chart, " 1 " is located not add impedance before the conductiving metal strip for small size antenna.The formula of the position of " 1 ":
Wherein: L is the length of label antenna, and f is the frequency of operation of label, ε
eBe the effective dielectric constant of antenna medium body, c is the light velocity under the vacuum.When selecting dielectric substrate, ε
eBe constant, f and c also are constants in addition, and there are direct relation in Φ ° and L.Yet, if we use the way of general microstrip antenna, directly impedance is accomplished the position of " 2 ", its size can be position about more than 2 times who arrives " 1 ".
The utility model expects that " 3 " are the impedance position of general chip, and now, " 2 " and " 3 " reach conjugation, so can realize coupling.The function of conductiving metal strip is just like the effect of short circuited inductance, and in Smithchart, the relative position of scalable short-circuit part and chip connecting portion and the length of short-circuit part and width reach accurately the process from " 1 " → " 2 ".
That is to say, matching process from " 1 " to " 2 ", produced curve " 1; 2 " different antenna sizes can bring the position of different " 1 ", and our target " 2 " is fixed, in order to realize different curve " 1; 2 " we can be with the conductiving metal strip that different numbers are set, and different conductiving metal strip length (length of travel from the radiation electrode layer to ground plane and width (live width), with different conductiving metal strip distance, increase conductiving metal strip number and conductiving metal strip width and can make curve " 1,2 " elongated with respect to the installation position of chip, increase conductiving metal strip length and make conductiving metal strip curve " 1,2 " be shortened away from chip.
Fig. 3 is the schematic diagram of label design, and chip is a chip described in the utility model among the figure, and antenna is the Principle of Antenna figure before the no conductiving metal strip among the figure, and L is similar and inductance that is connected in parallel on the IC chip limit of effect that conductiving metal strip produces among the figure.The effect of L will produce the process as curve " 1,2 " among Fig. 3 in Fig. 2.L becomes senior general shortens curve " 1,2 ", and L diminishes and will make curve " 1,2 " elongated.And increase conductiving metal strip number and conductiving metal strip width will make L diminish, and increase conductiving metal strip length and make conductiving metal strip will make L become big away from chip.
Embodiment two
Conductiving metal strip substitutes with inductance.In fact, the Q value of inductance is lower, and its loss value is bigger than conductiving metal strip, though the realization effect of conductiving metal strip is better than inductance, inductance also can be realized.
A kind of novel UHF_RFID anti-metal tag that can be reduced in size, comprise antenna and IC chip, described antenna further comprises dielectric substrate, the one side of dielectric substrate is provided with ground plane, the radiation electrode layer is set on its corresponding surface, described radiation electrode layer is connected with the RF port of IC chip by first feeder line, described ground plane passes through one section metal level or directly is connected with the GND port of IC chip by second feeder line, between described radiation electrode layer and the ground plane at least one inductance is set, make the radiation electrode layer be connected by described inductance with ground plane, the width of conductiving metal strip is less than 1cm, and, first feeder line, second feeder line and inductance are arranged on the same side.
Described inductance is arranged on the side or the inside of dielectric substrate.
Application examples
A kind of antenna, comprise dielectric substrate, the one side of dielectric substrate is provided with ground plane, the radiation electrode layer is set on its corresponding surface, described radiation electrode layer is connected with the IC chip by first feeder line by one section metal level again, described ground plane passes through one section metal level or directly is connected with the IC chip by second feeder line, between described radiation electrode layer and the ground plane at least one conductiving metal strip/inductance is set, make the radiation electrode layer directly be connected by described bonding jumper/inductance with ground plane, the width of conductiving metal strip is less than 1cm, and, first feeder line, second feeder line and bonding jumper/inductance are arranged on the same side.
More than disclosed only be several specific embodiment of the present utility model, but the utility model is not limited thereto, any those skilled in the art can think variation, all should drop in the protection domain of the present utility model.
Claims (7)
1. novel UHF_RFID anti-metal tag that can be reduced in size, comprise antenna and IC chip, described antenna further comprises dielectric substrate, the one side of dielectric substrate is provided with ground plane, the radiation electrode layer is set on its corresponding surface, described radiation electrode layer is connected with the RF port of IC chip by first feeder line, described ground plane directly or by second feeder line is connected with the GND port of IC chip, between described radiation electrode layer and the ground plane at least one conductiving metal strip is set, make the radiation electrode layer be connected by described conductiving metal strip with ground plane, the width of conductiving metal strip is less than 1cm, and, first feeder line, second feeder line and conductiving metal strip are arranged on the same side.
2. novel UHF_RFID anti-metal tag that can be reduced in size as claimed in claim 1 is characterized in that, described radiation electrode layer is connected with the RF port of IC chip by one section metal level.
3. novel UHF_RFID anti-metal tag that can be reduced in size as claimed in claim 1 is characterized in that, described IC chip be arranged on dielectric substrate the side or above.
4. novel UHF_RFID anti-metal tag that can be reduced in size as claimed in claim 4 is characterized in that, conductiving metal strip for and be listed in the same side.
5. novel UHF_RFID anti-metal tag that can be reduced in size, comprise antenna and IC chip, described antenna further comprises dielectric substrate, the one side of dielectric substrate is provided with ground plane, the radiation electrode layer is set on its corresponding surface, described radiation electrode layer is connected with the RF port of IC chip by first feeder line, described ground plane directly or by second feeder line is connected with the GND port of IC chip, between described radiation electrode layer and the ground plane at least one inductance is set, make the radiation electrode layer be connected by described inductance with ground plane, and, first feeder line, second feeder line and inductance are arranged on the same side.
6. antenna, it is characterized in that, described antenna further comprises dielectric substrate, the one side of dielectric substrate is provided with ground plane, the radiation electrode layer is set on its corresponding surface, described radiation electrode layer is connected with the IC chip by first feeder line by one section metal level again, described ground plane passes through one section metal level or directly is connected with the IC chip by second feeder line, between described radiation electrode layer and the ground plane at least one conductiving metal strip/inductance is set, make the radiation electrode layer directly be connected by described bonding jumper/inductance with ground plane, the width of conductiving metal strip is less than 1cm, and, first feeder line, second feeder line and bonding jumper/inductance are arranged on the same side.
7. antenna as claimed in claim 7 is characterized in that, described conductiving metal strip/inductance be arranged on dielectric substrate the side or above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200303453U CN201984510U (en) | 2010-12-24 | 2011-01-28 | Novel UHF-RFID metal resistant label of which size can be reduced and antenna |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020678286 | 2010-12-24 | ||
| CN201020678286.6 | 2010-12-24 | ||
| CN2011200303453U CN201984510U (en) | 2010-12-24 | 2011-01-28 | Novel UHF-RFID metal resistant label of which size can be reduced and antenna |
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| Publication Number | Publication Date |
|---|---|
| CN201984510U true CN201984510U (en) | 2011-09-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200303453U Expired - Lifetime CN201984510U (en) | 2010-12-24 | 2011-01-28 | Novel UHF-RFID metal resistant label of which size can be reduced and antenna |
Country Status (1)
| Country | Link |
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| CN (1) | CN201984510U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102542321A (en) * | 2010-12-24 | 2012-07-04 | 刘智佳 | Novel size reducible ultrahigh frequency_radio frequency identification (UHF_RFID) anti-metal tag and antenna |
| WO2013152719A1 (en) * | 2012-04-10 | 2013-10-17 | Liu Zhijia | Production technology of tag antenna |
| CN103730714A (en) * | 2012-10-12 | 2014-04-16 | 刘智佳 | RFID label antenna |
| US8950683B2 (en) | 2011-11-25 | 2015-02-10 | Zhijia Liu | Production process of tag antenna |
| CN106523049A (en) * | 2015-09-11 | 2017-03-22 | 上海上电漕泾发电有限公司 | Turbine steam extraction and heat supply system |
-
2011
- 2011-01-28 CN CN2011200303453U patent/CN201984510U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102542321A (en) * | 2010-12-24 | 2012-07-04 | 刘智佳 | Novel size reducible ultrahigh frequency_radio frequency identification (UHF_RFID) anti-metal tag and antenna |
| CN102542321B (en) * | 2010-12-24 | 2015-03-25 | 上海曜传信息科技有限公司 | Novel size reducible ultrahigh frequency_radio frequency identification (UHF_RFID) anti-metal tag and antenna |
| US8950683B2 (en) | 2011-11-25 | 2015-02-10 | Zhijia Liu | Production process of tag antenna |
| WO2013152719A1 (en) * | 2012-04-10 | 2013-10-17 | Liu Zhijia | Production technology of tag antenna |
| CN103367889A (en) * | 2012-04-10 | 2013-10-23 | 刘智佳 | Label-antenna production process |
| CN103367889B (en) * | 2012-04-10 | 2018-02-02 | 上海曜传信息科技有限公司 | A kind of production technology of label antenna |
| CN103730714A (en) * | 2012-10-12 | 2014-04-16 | 刘智佳 | RFID label antenna |
| CN106523049A (en) * | 2015-09-11 | 2017-03-22 | 上海上电漕泾发电有限公司 | Turbine steam extraction and heat supply system |
| CN106523049B (en) * | 2015-09-11 | 2018-03-16 | 上海上电漕泾发电有限公司 | A kind of extracted steam from turbine heating system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170614 Address after: 200336 room 21, building 641, 3 Tian Shan Road, Shanghai, Changning District, 403 Patentee after: Shanghai Fei Mdt InfoTech Ltd Address before: 210009 No. 297 Jiangdong North Road, Gulou District, Jiangsu, Nanjing Patentee before: Liu Zhijia |
|
| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110921 |
|
| CX01 | Expiry of patent term |