CN111950677B - Electronic tag chip and electronic tag - Google Patents
Electronic tag chip and electronic tag Download PDFInfo
- Publication number
- CN111950677B CN111950677B CN201910403106.9A CN201910403106A CN111950677B CN 111950677 B CN111950677 B CN 111950677B CN 201910403106 A CN201910403106 A CN 201910403106A CN 111950677 B CN111950677 B CN 111950677B
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- electronic tag
- antenna
- signal
- tag chip
- antenna ports
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- 238000001514 detection method Methods 0.000 claims abstract description 4
- 239000003990 capacitor Substances 0.000 claims description 35
- 230000000295 complement effect Effects 0.000 claims description 3
- 229910044991 metal oxide Inorganic materials 0.000 claims description 3
- 150000004706 metal oxides Chemical class 0.000 claims description 3
- 239000004065 semiconductor Substances 0.000 claims description 3
- 230000008859 change Effects 0.000 abstract description 8
- 238000010586 diagram Methods 0.000 description 3
- 230000003071 parasitic effect Effects 0.000 description 3
- 230000006870 function Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
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Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
- G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
- G06K19/077—Constructional details, e.g. mounting of circuits in the carrier
- G06K19/07749—Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card
- G06K19/07773—Antenna details
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
- G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
- G06K19/077—Constructional details, e.g. mounting of circuits in the carrier
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Details Of Aerials (AREA)
Abstract
The invention discloses an electronic tag chip and an electronic tag, wherein the electronic tag chip comprises: the device comprises two antenna ports, an automatic adjusting unit, a signal intensity detecting unit and a control unit; the two antenna ports are used for connecting antennas; the automatic adjusting unit is electrically connected to the two antenna ports; the signal intensity detection unit detects the intensity of antenna signals received by the two antenna ports, and outputs an adjusting signal when the intensity of the antenna signals does not reach the designated intensity; the control unit controls the automatic adjusting unit to act according to the adjusting signal so as to change the impedance between the two antenna ports.
Description
Technical Field
The present invention relates to electronic tag chips and electronic tags, and more particularly, to an electronic tag chip and an electronic tag with an automatic adjustment function.
Background
The existing electronic tags mainly comprise an electronic tag chip and an antenna, the electronic tag chip can generate parasitic parameters when being connected with the antenna, the antenna is matched and deteriorated due to the parasitic parameters, the read-write distance and the signal strength of the electronic tag are finally affected, meanwhile, if the electronic tag is required to meet the requirement of the signal strength, the electronic tag chip can only correspond to the antenna with one structure and shape, and when the antenna with different structures and shapes is connected with the electronic tag chip, the read-write distance and the signal strength of the electronic tag can be affected, so that the applicability of the existing electronic tag chip is not strong, the requirement on the external antenna is strict, and the electronic tag chip is not suitable for the requirement of diversified antenna structures and shapes.
Therefore, there is an urgent need to develop an electronic tag chip and an electronic tag that overcome the above-mentioned drawbacks.
Disclosure of Invention
The technical problem to be solved by the invention is to provide an electronic tag chip, which comprises:
two antenna ports for connecting antennas;
the automatic adjusting unit is electrically connected with the two antenna ports;
a signal intensity detection unit for detecting the intensity of the antenna signals received by the two antenna ports, and outputting an adjusting signal when the intensity of the antenna signals does not reach the designated intensity;
and the control unit controls the automatic adjusting unit to act according to the adjusting signal so as to change the impedance at two ends of the two antenna ports.
The electronic tag chip comprises at least one adjusting module, wherein two ends of each adjusting module are respectively and electrically connected to two antenna ports, and the control unit is used for controlling the automatic adjusting unit to be connected to at least one adjusting module according to the adjusting signals so as to change the capacitance value of the automatic adjusting unit and change the impedance at two ends of the two antenna ports.
The electronic tag chip comprises a first capacitor, a switch and a second capacitor which are electrically connected in sequence, wherein the control unit selectively closes or closes at least one switch according to the adjusting signal so as to connect at least one first capacitor and at least one second capacitor between two antenna ports, and further change the capacitance value of the automatic adjusting unit.
In the electronic tag chip, the capacitance values of the plurality of first capacitors are different.
In the electronic tag chip, the capacitance values of the plurality of second capacitors are different.
In the electronic tag chip, each switch is a metal oxide semiconductor transistor.
In the electronic tag chip, each switch is a complementary MOS circuit.
In the electronic tag chip, when the intensity of the antenna signal reaches the specified intensity, the signal intensity detection unit outputs a termination signal, and the control unit controls the automatic adjustment unit to stop acting and keep in the existing state according to the termination signal.
In the electronic tag chip, the plurality of switches are sequentially closed or sequentially opened.
The invention also discloses an electronic tag, which comprises:
an antenna; and
The electronic tag chip of any one of the above, electrically connected to the antenna.
The invention aims at the prior art and has the following effects: according to the electronic tag chip and the electronic tag, through adding the automatic adjusting function, the influence of parasitic parameters on the read-write distance and the signal strength of the electronic tag is reduced, so that the signal strength is enhanced, meanwhile, the electronic tag chip can be matched with antennas of different structures, and the applicability of the electronic tag chip is enhanced.
Drawings
FIG. 1 is a schematic diagram of the structure of an electronic tag according to the present invention;
FIG. 2 is a schematic view of the first embodiment of the automatic adjusting unit in FIG. 1;
fig. 3 is a schematic structural view of a second embodiment of the automatic adjusting unit in fig. 1.
Detailed Description
The invention is described in further detail below with reference to the attached drawings and specific examples: the embodiment is implemented on the premise of the technical scheme of the invention, and an implementation mode and an operation process are provided, but the protection scope of the invention is not limited to the following embodiment.
Referring to fig. 1 to 2, fig. 1 is a schematic structural diagram of an electronic tag according to the present invention; fig. 2 is a schematic structural view of a first embodiment of the automatic adjusting unit in fig. 1. As shown in fig. 1 to 2, the electronic tag of the present invention includes: antenna 1 and electronic tag chip 2, electronic tag chip 2 includes: two antenna ports RF1, RF2, an automatic adjusting unit 21, a signal strength detecting unit 22 and a control unit 23; two antenna ports RF1, RF2 for connecting the antenna 1; the automatic adjusting unit 21 is electrically connected to the two antenna ports RF1, RF2; the signal strength detecting unit 22 detects the strength of the antenna signal received by the two antenna ports RF1, RF2, and when the strength of the antenna signal does not reach the specified strength, the signal strength detecting unit 22 outputs an adjustment signal; the control unit 23 controls the automatic adjusting unit 21 to operate according to the adjusting signal so that the impedance at both ends of the two antenna ports RF1 and RF2 changes.
Further, the automatic adjusting unit 21 includes at least one adjusting module 211, two ends of each adjusting module 211 are electrically connected to the two antenna ports RF1 and RF2, respectively, the control unit 23 controls the automatic adjusting unit 21 to access the at least one adjusting module 211 between the two antenna ports RF1 and RF2 according to the adjusting signal, so as to change the capacitance value of the automatic adjusting unit 21, change the impedance at two ends of the two antenna ports RF1 and RF2, and when the intensity of the antenna signal reaches the designated intensity, the signal intensity detecting unit 22 outputs a termination signal, and the control unit 23 controls the automatic adjusting unit 21 to stop according to the termination signal and keep the current state.
Still further, each adjusting module 211 includes a first capacitor C1, a switch SW and a second capacitor C2 electrically connected in sequence, and the control unit 23 selectively closes or closes at least one switch SW according to the adjusting signal, so as to connect at least one first capacitor C1 and at least one second capacitor C2 between the two antenna ports RF1 and RF2, thereby changing the capacitance value of the automatic adjusting unit 21.
Furthermore, the electronic tag chip 2 may further include an analog front end unit 24, a power management unit 25 and a memory 26, wherein the analog front end unit 24 is electrically connected to the antenna port RF1 and the control unit 23, the power management unit 25 is electrically connected to the antenna port RF2, and the memory 26 is electrically connected to the control unit 23.
Referring specifically to fig. 2, in this embodiment, the automatic adjusting unit 21 includes four adjusting modules 211A, 211B, 211C, 211D connected in parallel, the adjusting module 211A includes a first capacitor C1A, a switch SWA, and a second capacitor C2A electrically connected in sequence, the adjusting module 211B includes a first capacitor C1B, a switch SWB, and a second capacitor C2B electrically connected in sequence, the adjusting module 211C includes a first capacitor C1C, a switch SWC, and a second capacitor C2C electrically connected in sequence, and the adjusting module 211D includes a first capacitor C1D, a switch SWD, and a second capacitor C2D electrically connected in sequence.
The following specifically describes the operation of the electronic tag chip 2 according to the present invention with reference to fig. 1 and 2: initially, the switch SWD is turned on and the switch SWA, SWB, SWC is turned off, and the first capacitor C1D and the second capacitor C2D are connected between the two antenna ports RF1 and RF2, and it should be noted that the first capacitor C1D and the second capacitor C2D are preset to be the largest capacitors of the plurality of first capacitors and the plurality of second capacitors, respectively, but the invention is not limited in sequence. When the two antenna ports RF1 and RF2 receive the antenna signals at both ends, the signal strength detecting unit 22 detects the strength of the antenna signals, if the signal strength does not reach the designated strength, the signal strength detecting unit 22 outputs an adjustment signal to the control unit 23, the control unit 23 controls the switch SWA, SWB, SWC, SWD to be turned on or off successively according to the adjustment signal, that is, the first capacitor C1A, C1B, C1C, C D and the second capacitor C2A, C2B, C2C, C D are correspondingly connected or not connected between the two antenna ports RF1 and RF2 until the signal strength reaches the designated strength, the signal strength detecting unit 22 outputs a termination signal, and the control unit 23 controls the switch SWA, SWB, SWC, SWD to terminate the closing or opening action according to the termination signal and keep the state at the present.
It should be noted that, in the present embodiment, the two antenna ports RF1 and RF2 are electrically connected to one antenna, but the present invention is not limited thereto, and in other embodiments, the two antenna ports RF1 and RF2 may be connected to one antenna respectively, and the structures and shapes of the two antennas may be the same or different.
In an embodiment of the present invention, the capacitance values of the plurality of first capacitors C1 are different.
In an embodiment of the present invention, the capacitance values of the plurality of second capacitors C2 are different.
In one embodiment of the present invention, each switch SW is a metal oxide semiconductor transistor.
In one embodiment of the present invention, each switch SW is a complementary MOS circuit.
Referring to fig. 3, fig. 3 is a schematic structural diagram of a second embodiment of the automatic adjusting unit in fig. 1. It should be noted that the number of the adjusting modules is not limited in the present invention, and a designer may increase or decrease the number of the adjusting modules according to actual needs, in this embodiment, the automatic adjusting unit 21 includes n adjusting modules 211 … 21n, where n is a positive integer, and the structure and connection manner of the specific adjusting modules are the same as those shown in fig. 2, which is not repeated here.
In summary, the present invention controls the change of the capacitance by detecting the signal strength, so that the impedance at both ends of the two antenna ports RF1 and RF2 is changed, the antenna matching is optimized, and the signal strength is enhanced.
Although the present invention has been described with reference to the above embodiments, it should be understood that the present invention is not limited thereto, and that various changes and modifications can be made by one skilled in the art without departing from the spirit and scope of the present invention, and the scope of the present invention is defined by the appended claims.
Claims (7)
1. An electronic tag chip, comprising:
two antenna ports for connecting antennas;
the automatic adjusting unit comprises at least one adjusting module, two ends of each adjusting module are respectively and electrically connected with two antenna ports, and each adjusting module comprises a first capacitor, a switch and a second capacitor which are electrically connected in sequence;
a signal intensity detection unit for detecting the intensity of the antenna signals received by the two antenna ports, and outputting an adjusting signal when the intensity of the antenna signals does not reach the designated intensity;
the control unit selectively turns on or off at least one switch according to the adjusting signal so as to connect at least one first capacitor and at least one second capacitor between the two antenna ports, thereby changing the capacitance value of the automatic adjusting unit;
wherein the plurality of switches are sequentially closed or sequentially opened.
2. The electronic tag chip of claim 1, wherein the capacitance values of the plurality of first capacitors are different.
3. The electronic tag chip of claim 1, wherein the capacitance values of the plurality of second capacitors are different.
4. The electronic tag chip of claim 1, wherein each of said switches is a metal oxide semiconductor transistor.
5. The electronic tag chip of claim 1, wherein each of said switches is a complementary MOS circuit.
6. The electronic tag chip according to claim 1, wherein the signal strength detecting unit outputs a termination signal when the strength of the antenna signal reaches a specified strength, and the control unit controls the automatic adjusting unit to stop operating and to be maintained in an existing state according to the termination signal.
7. An electronic tag, comprising:
an antenna; and
The electronic tag chip of any one of claims 1-6, electrically connected to the antenna.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910403106.9A CN111950677B (en) | 2019-05-15 | 2019-05-15 | Electronic tag chip and electronic tag |
| PCT/CN2019/112768 WO2020228245A1 (en) | 2019-05-15 | 2019-10-23 | Electronic tag chip and electronic tag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910403106.9A CN111950677B (en) | 2019-05-15 | 2019-05-15 | Electronic tag chip and electronic tag |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111950677A CN111950677A (en) | 2020-11-17 |
| CN111950677B true CN111950677B (en) | 2023-05-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910403106.9A Active CN111950677B (en) | 2019-05-15 | 2019-05-15 | Electronic tag chip and electronic tag |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN111950677B (en) |
| WO (1) | WO2020228245A1 (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103218651A (en) * | 2013-03-19 | 2013-07-24 | 天津工业大学 | Intelligent double-antenna ultra high frequency (UHF) radio frequency identification device (RFID) |
| CN103337717A (en) * | 2013-06-25 | 2013-10-02 | 华为技术有限公司 | Antenna impedance matching device, semi-conductor chip and antenna impedance matching method |
| CN104246630A (en) * | 2012-04-11 | 2014-12-24 | 英频杰公司 | RFID integrated circuits and tags with antenna contacts on multiple surfaces |
| CN105680150A (en) * | 2016-04-01 | 2016-06-15 | 无锡键桥电子科技有限公司 | High-performance label antenna |
| CN106532277A (en) * | 2016-10-27 | 2017-03-22 | 天津大学 | Wireless sensor adopting multi-port tag antenna and solar energy collection function |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101630775A (en) * | 2008-07-14 | 2010-01-20 | 财团法人资讯工业策进会 | Method and system for adjusting antenna |
| CN103927564B (en) * | 2013-01-14 | 2017-01-25 | 北京北大千方科技有限公司 | Communication method between reader-writer and electronic tag, reader-writer and electronic tag |
| CN105789828B (en) * | 2016-03-22 | 2019-12-24 | 青岛海信移动通信技术股份有限公司 | Antenna and mobile terminal |
| CN107301358B (en) * | 2016-04-14 | 2022-06-17 | 中兴通讯股份有限公司 | Passive electronic tag, and control method, device and system of passive electronic tag |
| CN106785339B (en) * | 2016-12-29 | 2023-11-24 | 歌尔股份有限公司 | Wearable device and antenna signal processing circuit and method thereof |
| CN106971218B (en) * | 2017-03-31 | 2020-07-28 | 深圳市阿尔艾富信息技术股份有限公司 | RFID electronic tag |
| CN108629396B (en) * | 2018-03-30 | 2021-05-28 | 深圳市远望谷信息技术股份有限公司 | Circuit for automatically adjusting receiving energy of electronic tag and electronic tag chip |
| CN109165716B (en) * | 2018-10-12 | 2021-07-27 | 上海坤锐电子科技有限公司 | Radio frequency chip, electronic tag and identification method thereof |
-
2019
- 2019-05-15 CN CN201910403106.9A patent/CN111950677B/en active Active
- 2019-10-23 WO PCT/CN2019/112768 patent/WO2020228245A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104246630A (en) * | 2012-04-11 | 2014-12-24 | 英频杰公司 | RFID integrated circuits and tags with antenna contacts on multiple surfaces |
| CN103218651A (en) * | 2013-03-19 | 2013-07-24 | 天津工业大学 | Intelligent double-antenna ultra high frequency (UHF) radio frequency identification device (RFID) |
| CN103337717A (en) * | 2013-06-25 | 2013-10-02 | 华为技术有限公司 | Antenna impedance matching device, semi-conductor chip and antenna impedance matching method |
| CN105680150A (en) * | 2016-04-01 | 2016-06-15 | 无锡键桥电子科技有限公司 | High-performance label antenna |
| CN106532277A (en) * | 2016-10-27 | 2017-03-22 | 天津大学 | Wireless sensor adopting multi-port tag antenna and solar energy collection function |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111950677A (en) | 2020-11-17 |
| WO2020228245A1 (en) | 2020-11-19 |
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Effective date of registration: 20201221 Address after: 518000 east of 5th floor, building D, phase II, Daheng science and Technology Park, Xili street, Nanshan District, Shenzhen City, Guangdong Province Applicant after: Shenzhen Longxin intelligent lock Co.,Ltd. Address before: 518000 Guangdong, Shenzhen, Nanshan District Xili street, Xili Tanglang industrial B District, 39 building 3. Applicant before: SHENZHEN NOKELOCK TECHNOLOGY Co.,Ltd. |
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Address after: 518000 No. 808-b051, Qianhai Xiangbin building, No. 18, free trade West Street, Nanshan street, Qianhai Shenzhen Hong Kong cooperation zone, Shenzhen, Guangdong Province Applicant after: Shenzhen Meikai Innovation Technology Co.,Ltd. Address before: 518000 1002, Beiyou science and technology building, No. 42, Gaoxin South Ring Road, high tech Zone community, Yuehai street, Nanshan District, Shenzhen, Guangdong Province Applicant before: Shenzhen Meikai Innovation Technology Co.,Ltd. |
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