CN202257633U - Ultrahigh frequency passive electronic tag - Google Patents
Ultrahigh frequency passive electronic tag Download PDFInfo
- Publication number
- CN202257633U CN202257633U CN2011203537551U CN201120353755U CN202257633U CN 202257633 U CN202257633 U CN 202257633U CN 2011203537551 U CN2011203537551 U CN 2011203537551U CN 201120353755 U CN201120353755 U CN 201120353755U CN 202257633 U CN202257633 U CN 202257633U
- Authority
- CN
- China
- Prior art keywords
- module
- chip
- antenna
- electronic tag
- processing module
- 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 provides an ultrahigh frequency passive electronic tag which comprises a chip, wherein the chip is connected with an antenna; a digital processing module is arranged in the chip; the digital processing module is connected with a reference voltage source, a voltage stabilization module and a rectification module in sequence; the rectification module is connected with the antenna by a match network; the digital processing module is connected with a demodulation and power-on reset module; the demodulation and power-on reset module is connected with the rectification module and the reference voltage source respectively; the digital processing module is connected with the antenna by a backscatter modulation module; and the digital processing module is also connected with a clock generation circuit. The output voltage of the reference voltage source is 1.22-1.25V, and the power supply rejection ratio is 100dB. A rectification system composed of the voltage stabilization module, the rectification module and the backscatter modulation module is adopted in the electronic tag, the voltage of the rectification system of the chip is stabilized, and the service life of the electronic tag is prolonged.
Description
Technical field
The utility model relates to electronic tag, especially relates to a kind of ultra-high-frequency passive electronic tag.
Background technology
RFID (Radio Frequency Identification) system is a kind of of automatic recognition system; Compare with other automatic identification technologies; The RFID technology has lot of advantages, for example the contamination resistance of the miniaturization of scanning (reader can read a plurality of labels simultaneously), label volume and variation, label and endurance is more intense, label is reusable, the memory kiln amount of data big, have penetrability and do not have barrier reading ability and high safety etc. fast.
Just because of these advantages of RFID technology, make the RFID technology obtain development extremely fast, and obtained application in a plurality of fields.For example entrance guard management, communications and transportation, medical use, animal monitoring, theft-prevention applications, Application in Anti-counterfeiting, supply chain management or the like.Passive RFID tags receives the signal of read write line emission and it is modulated back reflection give read write line.Passive RFID tags itself is charged pool not, the electromagnetic energy work that relies on card reader to send.Because passive RFID tags is simple in structure, economical and practical, thereby obtained to use widely.
A complete ultra-high-frequency passive RFID label is made up of antenna and label chip two parts, and is as shown in Figure 1.Because the residing electromagnetic environment of RFID label is very complicated, the power of input signal can change hundred times even several thousand times, therefore, for chip all can operate as normal at the field persistent erection that varies in size, power supply stabilization circuit that must reliable design.
The utility model content
The purpose of the utility model provides that a kind of chip commutating voltage is stable, the ultra-high-frequency passive electronic tag of long service life.
The utility model is that the technical scheme that its technical matters of solution is adopted is:
A kind of ultra-high-frequency passive electronic tag includes chip, and chip links to each other with antenna, and antenna induction is also accepted energy and signal in the electromagnetic field and sent chip to and carry out signal Processing,
Be provided with digital signal processing module in the said chip, digital signal processing module connects reference voltage source, voltage Voltage stabilizing module, rectification module in order, and rectification module is connected with antenna through matching network; The stable reference voltage of reference voltage source generation and temperature and independent of power voltage, and current offset is provided for other modules; The voltage Voltage stabilizing module produces stable power voltage, for chip provides global power, plays the protective effect of amplitude limit simultaneously; Rectification module converts the AC signal that antenna receives into direct current; Matching network is realized the impedance matching between chip and antenna;
Digital signal processing module is connected with demodulation and electrification reset module, and demodulation and electrification reset module link to each other with reference voltage source with rectification module respectively;
Digital signal processing module is connected with antenna through the backscattered modulation module; After connecting with card reader; Modulation circuit receives the part energy of a continuous frequency electromagnetic waves of card reader emission through receiving antenna; Simultaneously this electromagnetic part energy is reflected back; Through changing the impedance of the circuit that is connected with antenna, make the electromagnetic parameter that reflects back change, thereby reach the purpose of modulation.
Digital signal processing module also is connected with clock generating circuit.
The output voltage of said reference voltage source is 1.22～1.25V, and PSRR is 100dB.
The beneficial effect of the utility model is that this electronic tag has adopted the commutation system of being made up of voltage Voltage stabilizing module, rectification module, backscattered modulation module, makes chip commutation system voltage stable, has prolonged the serviceable life of electronic tag.
Description of drawings
Fig. 1 is the structural representation of conventional ultra-high-frequency passive electronic tag;
Fig. 2 is the structural representation of the ultra-high-frequency passive electronic tag of the utility model proposition.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and be easy to understand with effect and understand, below in conjunction with illustrating and specific embodiment, further set forth the utility model.
As shown in Figure 2; The ultra-high-frequency passive electronic tag that the utility model proposes includes chip; Chip links to each other with antenna, and antenna induction is also accepted energy and signal in the electromagnetic field and sent chip to and carry out signal Processing, is provided with digital signal processing module in the said chip; Digital signal processing module connects reference voltage source, voltage Voltage stabilizing module, rectification module in order, and rectification module is connected with antenna through matching network; The stable reference voltage of reference voltage source generation and temperature and independent of power voltage, and current offset is provided for other modules; The voltage Voltage stabilizing module produces stable power voltage, for chip provides global power, plays the protective effect of amplitude limit simultaneously; Rectification module converts the AC signal that antenna receives into direct current; Matching network is realized the impedance matching between chip and antenna; Digital signal processing module is connected with demodulation and electrification reset module, and demodulation and electrification reset module link to each other with reference voltage source with rectification module respectively; Digital signal processing module is connected with antenna through the backscattered modulation module; After connecting with card reader; Modulation circuit receives the part energy of a continuous frequency electromagnetic waves of card reader emission through receiving antenna; Simultaneously this electromagnetic part energy is reflected back; Through changing the impedance of the circuit that is connected with antenna, make the electromagnetic parameter that reflects back change, thereby reach the purpose of modulation.Digital signal processing module also is connected with clock generating circuit.
In the present embodiment, the output voltage of said reference voltage source is 1.22～1.25V, and PSRR is 100dB.
This electronic tag has adopted the commutation system of being made up of voltage Voltage stabilizing module, rectification module, backscattered modulation module, makes chip commutation system voltage stable, has prolonged the serviceable life of electronic tag.
More than show and described the advantage of ultimate principle, principal character and the utility model of the utility model.The technician of the industry should understand; The utility model is not restricted to the described embodiments; The principle of describing in the foregoing description and the instructions that the utility model just is described; The utility model also has various changes and modifications under the prerequisite that does not break away from the utility model spirit and scope, and these variations and improvement all fall in the utility model scope that requires protection.The utility model requires protection domain to be defined by appending claims and equivalent thereof.
Claims (2)
1. a ultra-high-frequency passive electronic tag includes chip, and chip links to each other with antenna, it is characterized in that,
Be provided with digital signal processing module in the said chip, digital signal processing module connects reference voltage source, voltage Voltage stabilizing module, rectification module in order, and rectification module is connected with antenna through matching network;
Digital signal processing module is connected with demodulation and electrification reset module, and demodulation and electrification reset module link to each other with reference voltage source with rectification module respectively;
Digital signal processing module is connected with antenna through the backscattered modulation module;
Digital signal processing module also is connected with clock generating circuit.
2. a kind of ultra-high-frequency passive electronic tag according to claim 1 is characterized in that the output voltage of said reference voltage source is 1.22～1.25V, and PSRR is 100dB.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203537551U CN202257633U (en) | 2011-09-20 | 2011-09-20 | Ultrahigh frequency passive electronic tag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203537551U CN202257633U (en) | 2011-09-20 | 2011-09-20 | Ultrahigh frequency passive electronic tag |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202257633U true CN202257633U (en) | 2012-05-30 |
Family
ID=46118844
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203537551U Expired - Lifetime CN202257633U (en) | 2011-09-20 | 2011-09-20 | Ultrahigh frequency passive electronic tag |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202257633U (en) |
-
2011
- 2011-09-20 CN CN2011203537551U patent/CN202257633U/en not_active Expired - Lifetime
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9082057B2 (en) | RF device with tamper detection | |
| Nainan et al. | RFID technology based attendance management system | |
| KR100803225B1 (en) | Radio frequency identification and communication device | |
| CN101576964B (en) | Radio frequency identification reader, radio frequency identification system and method of frequency conversion working | |
| CN101438331A (en) | RF device comparing DAC output to incoming signal for selectively performing an action | |
| DE60239124D1 (en) | ARCHITECTURE FOR RADIO FREQUENCY IDENTIFICATION | |
| US20110147468A1 (en) | Rfid tag | |
| CN102521642A (en) | RFID (radio frequency identification) tag chip | |
| CN103679255A (en) | Dual-frequency tag device and dual-frequency tag identification positioning system | |
| Lu et al. | A fully integrated HF RFID tag chip with LFSR-based light-weight tripling mutual authentication protocol | |
| CN202257633U (en) | Ultrahigh frequency passive electronic tag | |
| CN101329620A (en) | Apparatus for generating random number and super high frequency radio frequency identification label including the same | |
| Bhat et al. | Enhanced passive RFID based disaster management for coal miners | |
| Desai et al. | Design and implementation of IOT based smart library | |
| CN111667036A (en) | Method for remotely wirelessly charging electronic tag in air, charging system and electronic tag | |
| Neto et al. | A semi-passive UHF RFID tag compliant with Brazilian national automated vehicle identification system (SINIAV) | |
| CN103093262A (en) | Read-write device automatically converting barcode information into electronic product code (EPC) | |
| CN103955734B (en) | Semi-active light emitting and positioning radio frequency identification tag | |
| CN103218653B (en) | For label harmonic wave acquisition methods and the harmonic RF identification label of harmonic RF identification | |
| Grout et al. | RFID enabled sensor system design | |
| CN209373929U (en) | A kind of metering device seal based on Radio Frequency Identification Technology | |
| CN219303038U (en) | Passive electronic tag system | |
| CN106339646A (en) | Non-contact RFID reader and writer | |
| CN203838741U (en) | Semi active light-emitting positioning electronic label | |
| CN203084771U (en) | RFID-based monitoring management system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120530 |
|
| CX01 | Expiry of patent term |