CN1996352A - Semi-active RFID tag supporting wireless charging - Google Patents

Semi-active RFID tag supporting wireless charging Download PDF

Info

Publication number
CN1996352A
CN1996352A CN 200610148159 CN200610148159A CN1996352A CN 1996352 A CN1996352 A CN 1996352A CN 200610148159 CN200610148159 CN 200610148159 CN 200610148159 A CN200610148159 A CN 200610148159A CN 1996352 A CN1996352 A CN 1996352A
Authority
CN
China
Prior art keywords
energy
circuit
battery
radio frequency
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.)
Granted
Application number
CN 200610148159
Other languages
Chinese (zh)
Other versions
CN100458841C (en
Inventor
车文毅
闫娜
闵昊
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fudan University
Original Assignee
Fudan University
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Fudan University filed Critical Fudan University
Priority to CNB2006101481593A priority Critical patent/CN100458841C/en
Publication of CN1996352A publication Critical patent/CN1996352A/en
Application granted granted Critical
Publication of CN100458841C publication Critical patent/CN100458841C/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Near-Field Transmission Systems (AREA)

Abstract

本发明属于无线通讯技术领域，具体为一种支持无线充电的半有源射频识别标签。本发明通过改变无源射频识别标签的系统组成，并在其中增加电池、能量检测、能量选择和电池保护等模块，实现了一种支持无线充电功能的半有源射频识别标签。本发明中的能量检测电路采用两级检测的方式，通过检测整流电路输出的直流电平判断标签接收到的能量大小，选择天线上接收的射频能量或电池对标签中用以存储、处理数据和信号发生等功能的电路进行供电。当标签接收到的射频能量较强时，能量选择电路将利用富余的能量对电池进行充电，从而延长标签的使用寿命。本发明还对电池充放电的过程进行监控，实现电池保护等功能。

Figure 200610148159

The invention belongs to the technical field of wireless communication, in particular to a semi-active radio frequency identification tag supporting wireless charging. The invention realizes a semi-active radio frequency identification tag supporting wireless charging function by changing the system composition of the passive radio frequency identification tag and adding modules such as battery, energy detection, energy selection and battery protection. The energy detection circuit in the present invention adopts a two-stage detection method, judges the energy received by the tag by detecting the DC level output by the rectifier circuit, and selects the radio frequency energy received on the antenna or the battery to store and process data and signals in the tag The circuits that generate and other functions are powered. When the radio frequency energy received by the tag is strong, the energy selection circuit will use the surplus energy to charge the battery, thereby prolonging the service life of the tag. The invention also monitors the charging and discharging process of the battery to realize functions such as battery protection.

Figure 200610148159

Description

A kind of semi-active RFID tag of supporting wireless charging
Technical field
The invention belongs to the wireless communication technique field, specifically involve a kind of semi-active RFID tag.
Background technology
In our daily life, automatic identification technology has a very wide range of applications in fields such as commerce, service sectors.Survey and compare with bar code, magnetic stripe with Contact Type Ic Card, REID (RFID-Radio FrequencyIdentification) has numerous advantages such as noncontact, precision height, information gathering are handled rapidly, all weather operations, has obtained vigorous growth and use widely in recent years.In different application scenarios, the composition structure of radio-frequency recognition system can difference according to actual needs change, but no matter be in which application scenario, any one radio-frequency recognition system has all comprised read write line and two parts of transponder.Fig. 1 has provided the synoptic diagram of a typical radio-frequency recognition system of being made up of read write line (1), reading and writing device antenna (2), transponder antenna (3) and transponder (4).Different according to NE BY ENERGY TRANSFER and method for interchanging data, the coupling scheme between read write line and the transponder can be divided into two kinds of inductive coupling and electromagnetism back scattering couplings.According to the difference of working frequency range, can be divided into low frequency, high frequency, ultrahigh frequency and four frequency ranges of microwave again.In general, the inductive coupling mode is applicable to low frequency and high-frequency band, and its characteristics are and can work in rugged surroundings such as humidity, but operating distance is generally in one meter, and typical frequency of operation has 125kHz, 225kHz, 13.56MHz; And electromagnetism back scattering coupling scheme are applicable to ultrahigh frequency and microwave frequency band, can realize the signal transmission more than a meter, and typical frequency of operation has 433MHz, 868MHz, 915MHz, 2.45GHz and 5.8GHz.
In actual applications, transponder often is called as radio-frequency (RF) tag or electronic tag (abbreviation label).According to the difference of tag-powered mode, can be divided into passive (Passive), half active (Semi-passive or Battery assisted passive) and active (Active) three kinds is dissimilar.Passive label does not have powered battery, and it is provided by the radio-frequency (RF) energy that read write line sends with the energy of keeping data storage, processing, signal generation fully in order to carry out data communication.Battery is equipped with in semi-active label inside, label optionally uses the radio-frequency (RF) energy of read write line emission or the energy of battery that the circuit that label inside is used for data storage, processing and internal signal generation is powered according to the energy size that receives, and is still provided by the radio-frequency (RF) energy of read write line emission in order to the energy that carries out data communication in the label.All required during active label work energy are supplied with by internal cell fully, and label can initiatively outwards send communication request, is often used for the function that realizes that some are complicated.Compare with passive label, semi-active label can be used for realizing the wireless telecommunications of farther distance because littler to the demand of the radio-frequency (RF) energy that receives; Compare with active label, the circuit structure of semi-active label is simple, and also littler for the demand of battery performance, production cost is lower.These advantages of semi-active label provide wide application space for it at numerous areas such as logistics, storage, car and boat monitoring, import and export checks.
Summary of the invention
The objective of the invention is to propose a kind of semi-active RFID tag of supporting wireless charging, reducing the demand of tag system, thereby realize the wireless telecommunications of farther distance for the energy that receives read write line emission.
The semi-active RFID tag of the support wireless charging that the present invention proposes is formed by the part system that changes passive label, and increases modules such as battery, energy measuring, energy selection and battery protection therein.Fig. 2 has provided structured flowchart of the present invention.It comprises antenna 5, battery 6, rectification and load-modulate module 7, battery protection module 8, energy detection module 9, energy selection module 10 and carries out circuit 11 these seven parts of functions such as data storage, processing and signal generation.Modules such as core of the present invention is that energy provides in the system, energy measuring and energy selection.Rectification and load-modulate module 7 are recovered out with the radiofrequency signal that obtains in the antenna 5, form galvanic current and press.When the RFID tag range reader is near, the energy height that antenna 5 receives, thereby the voltage height that rectification goes out; When the radio-frequency (RF) tag range reader was distant, the voltage that rectification goes out was low.Energy detection module 9 is according to rectification and load-modulate module 7 output voltage V RHeight judge the size that receives energy on the antenna 5, control energy selects module 10 to select V RPerhaps battery 6 power supply V BBe used as in the tag system power supply V in order to the circuit 11 of functions such as storage, deal with data and signal generation DD
Fig. 3 has provided the structural diagrams of energy detection module 9 and energy selection module 10.Owing to carry out accurate voltage detecting and need use the bigger circuit of power consumption such as reference voltage source and voltage comparator,, can shorten the maximum reading/writing distance of radio-frequency recognition system if the energy that receives with antenna 5 is powered to this part circuit fully.Therefore, the mode that the present invention proposes a kind of two-stage energy measuring solves this problem.Be that energy detection module 9 comprises elementary detection module 14 and accurate detection module 15, elementary testing circuit 14 uses the radio-frequency (RF) energy power supply, it adopts the minimum electrify restoration circuit of quiescent dissipation to carry out preliminary energy measuring, when it detects energy on the antenna 5 when enough strong, export a wake-up signal V WakeWith K switch 316 conductings.At this moment, use battery 6 power supply V B Accurate testing circuit 15 once more to V RSize detect, the result of detection will be by control line K 1C and K 2C is sent to energy and selects module 10 gauge tap K 112 and K 213 conducting or shutoff, thus carry out the switch and the switching of energy.If the energy that receives on the antenna 5 also has outside the operate as normal of tag system is provided when more than needed, this part energy more than needed will be used for battery 6 is charged, thereby make label to reuse for a long time and need not often change battery 6.
Battery protection module 8 is in order to detecting the voltage and current of battery 6 in charge and discharge process, in case stopcock K immediately occurred overcharging, after mistake is put or electric current the is excessive situation 213, protection battery 6 is not damaged, and simultaneously, label sends alerting signal to read write line.
Description of drawings
Fig. 1 is the structural diagrams of radio-frequency recognition system.
Fig. 2 is the structural diagrams of semi-active RFID tag.
Fig. 3 is the structural diagrams that energy detection module 9 and energy are selected module 10.
Fig. 4 is a physical circuit of the present invention.
Fig. 5 is the structural diagrams of accurate testing circuit 15 in the energy detection module 9.
Number in the figure: 1 is read write line, and 2 is reading and writing device antenna, and 3 is transponder antenna; 4 is transponder, and 5 is antenna, and 6 is battery; 7 are rectification and load-modulate module, and 8 is the battery protection module, and 9 is energy detection module; 10 are energy selection module, and 11 is data storage; functional circuit module such as processing and signal generation, 12 is gauge tap K1; 13 is gauge tap K2, and 14 is elementary detection module, and 15 is accurate detection module; 16 is K switch 3; 17 is reference voltage source, and 18 are voltage stabilizing and filtering circuit, and 19 is bleeder circuit; 20 is voltage comparator; 21 is logical circuit, and 22 is wave detector, and 23 is biasing circuit; 24 is low dropout voltage regulator; 25 is ring oscillator, and 26 is level shift and driving circuit, and 27 is electrify restoration circuit; 28 is non-volatility memorizer and control circuit thereof, and 29 is digital baseband.
Embodiment
Below by an instantiation the present invention is described in further detail.
Fig. 4 has provided the system construction drawing of a complete semi-active label.Wherein, functional circuit 11 is connected to form through circuit by ring oscillator amount 25, level shift and driving circuit 26, electrify restoration circuit 27, non-volatility memorizer and the control circuit 28 thereof of biasing circuit 23, low dropout voltage regulator amount 24, belt current biasing and digital baseband 29.When label entered into the on-site of read write line electromagnetic field, rectification and load-modulate module 7 reverted to a DC voltage V with the radio-frequency (RF) energy on the antenna 5 R, the elementary testing circuit 14 in the energy detection module 9 is subjected to this voltage V RExcitation after, export a wake-up signal V WakeWith K switch 316 conductings, accurately testing circuit 15 is started working.As shown in Figure 5, accurately testing circuit 15 is connected to form by filter circuit of pressure-stabilizing 18, reference voltage source 17, bleeder circuit 19, voltage comparator 20 and logical circuit 21 circuit successively.Wherein, bleeder circuit 19 comprises several divider resistances (being R1-R3 among the figure).Accurately testing circuit 15 is at first used voltage stabilizing and 18 couples of V of filtering circuit RStablize, get wherein two specific intermediate level V with bleeder circuit 19 then 1And V 2Fixed reference level V with reference voltage source 17 outputs CmpCompare.Distance between read write line and label is far, the radio-frequency (RF) energy that antenna 5 receives very hour, the DC level V of rectification and 7 outputs of load-modulate module RVery low, V 1And V 2All less than V CmpSo, the output V of voltage comparator 20 XAnd V YBe low level, after logical circuit 21 is handled this comparative result, export two signal K 1C and K 2C stopcock energy is selected the K in the module 10 112 and K 213, control K simultaneously 3C turn-offs the supply access of himself, and provides the unlatching threshold that feedback signal Logic_Back requires to improve elementary testing circuit 14.When the energy that receives on the antenna 5 is enough to keep communication between read write line and the label and needs, V RRaise, cause V 1Less than V CmpAnd V 2Greater than V CmpSo, the output V of voltage comparator 20 XBe low level, and V YBe high level, after logical circuit 21 is handled this comparative result, with K switch 213 open, and power in 6 pairs of tag systems of battery.Further shorten the distance between read write line and the label, when the energy that receives on the antenna 5 is enough to provide whole tag system to be worked, the output V of bleeder circuit 19 1And V 2All greater than V CmpSo, the output V of voltage comparator XAnd V YBe high level, after logical circuit 21 is handled this comparative result, export two signals K switch 112 and K 213 all conductings, this moment, the energy of tag system was provided by the radio-frequency (RF) energy that obtains on the antenna 5, and label enters passive mode.In K switch 112 and K 213 all under the situation of conducting, if the distance between read write line and the label is very short, when the energy that receives on the antenna 5 was very strong, the output of rectification and load-modulate module 7 will also be charged to battery 6 with unnecessary energy when providing energy for tag system.
In tag system shown in Figure 4, as long as energy selects module 10 to select V RAnd V BIn any one export V as it DD, label promptly enters duty.The envelope signal that wave detector 22 takes out on the antenna 5 converts thereof into digital signal Data; Biasing circuit 23 and low dropout voltage regulator 24 provide current reference I for the ring oscillator 25 of belt current biasing RefWith voltage reference V RefThereby, obtain the signal of frequency stabilization, after handling through level shift and driving circuit 26, this signal becomes the clock signal C lock of system; Electrify restoration circuit 27 provides a power-on reset signal POR.In addition, biasing circuit 23 also provides a current offset signal I for non-volatility memorizer 28 Bias Digital baseband 29 is handled above-mentioned Data, Clock, POR according to the regulation of communication protocol, simultaneously, finish communication with non-volatility memorizer by control bus and data bus, final signal processing results coding back (Mod) is transferred to rectification and load-modulate module 7, change the input impedance of tag system with it, the mode that adopts the electromagnetism back scattering to be coupled realizes the communication between label and the read write line.
In the above-mentioned course of work of tag system, in case energy is selected the K switch in the module 10 213 conductings, battery 6 enters charging and discharging circuit, and battery protection module 8 promptly is waken up, and begins to detect the voltage and current of battery 6 in charge and discharge process.If abnormal conditions have appearred in the work of battery 6, stopcock K at once 213; battery 6 is protected, exported the alerting signal that a battery 6 is made mistakes simultaneously, give the digital baseband 29 in the label together with the state (voltage, electric current, dump energy etc.) of battery 6; digital baseband 29 is transferred to read write line with alerting signal after this signal is encoded.

Claims (4)

1、一种支持无线充电的半有源射频识别标签，其特征在于它包括天线(5)、电池(6)、整流与负载调制模块(7)、电池保护模块(8)、能量检测模块(9)、能量选择模块(10)和进行数据存储、处理和信号发生等功能的电路(11)这七个部分；整流与负载调制模块(7)将天线(5)中得到的射频信号恢复出来，形成稳定的直流电压；能量检测模块(9)根据整流与负载调制模块(7)输出电压VR的高低来判断天线(5)上接收到能量的大小，控制能量选择模块(10)选择VR或者电池(6)电源VB来作为标签系统中用以存储、处理数据和信号发生等功能的电路(11)的电源VDD。1. A semi-active radio frequency identification tag supporting wireless charging, characterized in that it includes an antenna (5), a battery (6), a rectification and load modulation module (7), a battery protection module (8), an energy detection module ( 9), the seven parts of the energy selection module (10) and the circuit (11) for data storage, processing and signal generation; the rectification and load modulation module (7) restores the radio frequency signal obtained in the antenna (5) , forming a stable DC voltage; the energy detection module (9) judges the size of the energy received on the antenna (5) according to the height of the rectification and load modulation module (7) output voltage VR , and controls the energy selection module (10) to select V R or the battery (6) power supply V B is used as the power supply V DD of the circuit (11) in the label system for storing and processing data and signal generation. 2、根据权利要求1所述的支持无线充电的半有源射频识别标签，其特征在于能量检测模块(9)包括初级检测模块(14)和精确检测模块(15)，初级检测电路(14)使用射频能量供电，它采用静态功耗极小的上电复位电路进行初步的能量检测，当它检测到天线(5)上的能量足够强时，输出一个唤醒信号Vwakc将开关K3(16)导通，这时，使用电池(6)电源VB的精确检测电路(15)再次对VR的大小进行检测，检测的结果通过控制线K1C和K2C被送往能量选择模块(10)控制开关K1(12)和K2(13)的导通或关断，从而进行能量的开关和切换。2. The semi-active radio frequency identification tag supporting wireless charging according to claim 1, characterized in that the energy detection module (9) includes a primary detection module (14) and an accurate detection module (15), and the primary detection circuit (14) Powered by radio frequency energy, it uses a power-on reset circuit with minimal static power consumption to perform preliminary energy detection. When it detects that the energy on the antenna (5) is strong enough, it outputs a wake-up signal V wakc to switch K 3 (16 ) conduction, at this time, use the accurate detection circuit (15) of the battery (6) power supply V B to detect the size of VR again, and the detection result is sent to the energy selection module through the control lines K 1 C and K 2 C (10) Controlling the on and off of the switches K 1 (12) and K 2 (13), so as to switch and switch the energy. 3、根据权利要求1所述的支持无线充电的半有源射频识别标签，其特征在于功能电路(11)由偏置电路(23)、低压降稳压器量(4)、带电流偏置的环形振荡器量(5)、电平移位和驱动电路(26)、上电复位电路(27)、非挥发性存储器及其控制电路(28)和数字基带(29)经电路连接组成。3. The semi-active radio frequency identification tag supporting wireless charging according to claim 1, characterized in that the functional circuit (11) is composed of a bias circuit (23), a low dropout voltage regulator (4), and a current biased A ring oscillator (5), a level shifting and driving circuit (26), a power-on reset circuit (27), a non-volatile memory and its control circuit (28) and a digital baseband (29) are connected through circuits. 4、根据权利要求2所述的支持无线充电的半有源射频识别标签，其特征在于精确检测电路(15)由稳压滤波电路(18)、基准电压源(17)、分压电路(19)、电压比较器(20)和逻辑电路(21)依次电路连接组成。4. The semi-active radio frequency identification tag supporting wireless charging according to claim 2, characterized in that the precise detection circuit (15) consists of a voltage stabilizing filter circuit (18), a reference voltage source (17), a voltage dividing circuit (19 ), a voltage comparator (20) and a logic circuit (21) are sequentially connected in circuit to form.
CNB2006101481593A 2006-12-28 2006-12-28 Semi-active RFID tag supporting wireless charging Expired - Fee Related CN100458841C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNB2006101481593A CN100458841C (en) 2006-12-28 2006-12-28 Semi-active RFID tag supporting wireless charging

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNB2006101481593A CN100458841C (en) 2006-12-28 2006-12-28 Semi-active RFID tag supporting wireless charging

Publications (2)

Publication Number Publication Date
CN1996352A true CN1996352A (en) 2007-07-11
CN100458841C CN100458841C (en) 2009-02-04

Family

ID=38251431

Family Applications (1)

Application Number Title Priority Date Filing Date
CNB2006101481593A Expired - Fee Related CN100458841C (en) 2006-12-28 2006-12-28 Semi-active RFID tag supporting wireless charging

Country Status (1)

Country Link
CN (1) CN100458841C (en)

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101762814A (en) * 2010-02-02 2010-06-30 杭州中芯微电子有限公司 Radio-frequency tracking, positioning and monitoring system
CN101901367A (en) * 2010-07-29 2010-12-01 苏州盖娅智能科技有限公司 Dual-power active RFID tag and control and implementation method thereof
CN101939757A (en) * 2007-12-11 2011-01-05 艾利丹尼森公司 RFID device with multiple passive operation modes
CN101937519A (en) * 2010-08-27 2011-01-05 电子科技大学 RFID electronic tags that can be charged wirelessly
CN102027688A (en) * 2008-05-13 2011-04-20 高通股份有限公司 Receive antenna for wireless power transfer
CN102314584A (en) * 2010-07-07 2012-01-11 厦门硅田系统工程有限公司 Micro-energy acquisition control device of novel RFID (Radio Frequency Identification) tag
CN101499118B (en) * 2008-01-31 2012-07-18 西门子公司 Method and apparatus for providing energy to passive label in radio frequency recognition system
WO2013166895A1 (en) * 2012-05-08 2013-11-14 卓捷创芯科技（深圳）有限公司 Passive radio-frequency identification electrification reset circuit and passive radio-frequency identification tag
CN104008022A (en) * 2013-02-20 2014-08-27 三星电子株式会社 Adjusting operation of an electronic device in response to a sudden-power-off (SPO) event
US8854224B2 (en) 2009-02-10 2014-10-07 Qualcomm Incorporated Conveying device information relating to wireless charging
US8878393B2 (en) 2008-05-13 2014-11-04 Qualcomm Incorporated Wireless power transfer for vehicles
US9312924B2 (en) 2009-02-10 2016-04-12 Qualcomm Incorporated Systems and methods relating to multi-dimensional wireless charging
US9583953B2 (en) 2009-02-10 2017-02-28 Qualcomm Incorporated Wireless power transfer for portable enclosures
CN106599971A (en) * 2016-12-12 2017-04-26 北京智芯微电子科技有限公司 Electronic tag power rectification circuit
CN107959505A (en) * 2016-10-14 2018-04-24 河南蓝信科技股份有限公司 A kind of passive balise and its method based on FPGA processor
CN109766980A (en) * 2019-01-17 2019-05-17 卓捷创芯科技（深圳）有限公司 A kind of circuit and method improving the passive radio-frequency identification labeled collection of energy of temperature sensor
CN111095014A (en) * 2017-09-13 2020-05-01 三星电子株式会社 Label and label position determination device and method
CN111742323A (en) * 2017-11-29 2020-10-02 ams有限公司 Method for wirelessly supplying energy by means of radio frequency identification RFID and RFID system
CN111969973A (en) * 2020-08-25 2020-11-20 中国科学院上海高等研究院 Low-power consumption thing networking transceiver system with awaken circuit up
CN112117999A (en) * 2020-08-25 2020-12-22 广东美的白色家电技术创新中心有限公司 Drive circuit and household appliance
CN112241637A (en) * 2019-07-19 2021-01-19 上海双十信息科技有限公司 RFID reader-writer and method for externally controlling on-off of RFID reader-writer
CN117010432A (en) * 2023-06-28 2023-11-07 北京智芯微电子科技有限公司 Radio frequency identification product, control method, device and storage medium

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106203543B (en) * 2015-02-11 2019-03-29 天地融科技股份有限公司 A kind of switching device

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5300875A (en) * 1992-06-08 1994-04-05 Micron Technology, Inc. Passive (non-contact) recharging of secondary battery cell(s) powering RFID transponder tags
US6944424B2 (en) * 2001-07-23 2005-09-13 Intermec Ip Corp. RFID tag having combined battery and passive power source
JP2004303174A (en) * 2003-04-01 2004-10-28 Seiko Epson Corp Electronic circuits and contactless tags for contactless tags
CN1529182A (en) * 2003-10-01 2004-09-15 复旦大学 Battery capacity identification and charging method of active radio frequency identification tag card
CN100481118C (en) * 2003-12-23 2009-04-22 Nxp股份有限公司 Method for generating power supply interruption time information in a contactless data carrier
KR100603986B1 (en) * 2005-03-07 2006-07-25 주식회사 한림포스텍 Battery pack for wireless charge

Cited By (41)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101939757A (en) * 2007-12-11 2011-01-05 艾利丹尼森公司 RFID device with multiple passive operation modes
CN101499118B (en) * 2008-01-31 2012-07-18 西门子公司 Method and apparatus for providing energy to passive label in radio frequency recognition system
US9190875B2 (en) 2008-05-13 2015-11-17 Qualcomm Incorporated Method and apparatus with negative resistance in wireless power transfers
US8611815B2 (en) 2008-05-13 2013-12-17 Qualcomm Incorporated Repeaters for enhancement of wireless power transfer
CN102027688A (en) * 2008-05-13 2011-04-20 高通股份有限公司 Receive antenna for wireless power transfer
US9954399B2 (en) 2008-05-13 2018-04-24 Qualcomm Incorporated Reverse link signaling via receive antenna impedance modulation
US9991747B2 (en) 2008-05-13 2018-06-05 Qualcomm Incorporated Signaling charging in wireless power environment
US8487478B2 (en) 2008-05-13 2013-07-16 Qualcomm Incorporated Wireless power transfer for appliances and equipments
US9178387B2 (en) 2008-05-13 2015-11-03 Qualcomm Incorporated Receive antenna for wireless power transfer
US8965461B2 (en) 2008-05-13 2015-02-24 Qualcomm Incorporated Reverse link signaling via receive antenna impedance modulation
US8629650B2 (en) 2008-05-13 2014-01-14 Qualcomm Incorporated Wireless power transfer using multiple transmit antennas
US9184632B2 (en) 2008-05-13 2015-11-10 Qualcomm Incorporated Wireless power transfer for furnishings and building elements
US9236771B2 (en) 2008-05-13 2016-01-12 Qualcomm Incorporated Method and apparatus for adaptive tuning of wireless power transfer
US9130407B2 (en) 2008-05-13 2015-09-08 Qualcomm Incorporated Signaling charging in wireless power environment
US8878393B2 (en) 2008-05-13 2014-11-04 Qualcomm Incorporated Wireless power transfer for vehicles
US8892035B2 (en) 2008-05-13 2014-11-18 Qualcomm Incorporated Repeaters for enhancement of wireless power transfer
US8854224B2 (en) 2009-02-10 2014-10-07 Qualcomm Incorporated Conveying device information relating to wireless charging
US9312924B2 (en) 2009-02-10 2016-04-12 Qualcomm Incorporated Systems and methods relating to multi-dimensional wireless charging
US9583953B2 (en) 2009-02-10 2017-02-28 Qualcomm Incorporated Wireless power transfer for portable enclosures
CN101762814A (en) * 2010-02-02 2010-06-30 杭州中芯微电子有限公司 Radio-frequency tracking, positioning and monitoring system
CN102314584B (en) * 2010-07-07 2014-05-07 厦门硅田系统工程有限公司 Micro-energy acquisition control device of novel RFID (Radio Frequency Identification) tag
CN102314584A (en) * 2010-07-07 2012-01-11 厦门硅田系统工程有限公司 Micro-energy acquisition control device of novel RFID (Radio Frequency Identification) tag
CN101901367A (en) * 2010-07-29 2010-12-01 苏州盖娅智能科技有限公司 Dual-power active RFID tag and control and implementation method thereof
CN101937519A (en) * 2010-08-27 2011-01-05 电子科技大学 RFID electronic tags that can be charged wirelessly
WO2013166895A1 (en) * 2012-05-08 2013-11-14 卓捷创芯科技（深圳）有限公司 Passive radio-frequency identification electrification reset circuit and passive radio-frequency identification tag
CN104008022A (en) * 2013-02-20 2014-08-27 三星电子株式会社 Adjusting operation of an electronic device in response to a sudden-power-off (SPO) event
CN107959505A (en) * 2016-10-14 2018-04-24 河南蓝信科技股份有限公司 A kind of passive balise and its method based on FPGA processor
CN106599971A (en) * 2016-12-12 2017-04-26 北京智芯微电子科技有限公司 Electronic tag power rectification circuit
CN106599971B (en) * 2016-12-12 2019-06-07 北京智芯微电子科技有限公司 A kind of electronic tag power rectifier circuit
CN111095014A (en) * 2017-09-13 2020-05-01 三星电子株式会社 Label and label position determination device and method
CN111095014B (en) * 2017-09-13 2023-10-31 三星电子株式会社 Label and label position determination device and method
CN111742323B (en) * 2017-11-29 2023-12-12 ams有限公司 Method for wirelessly supplying energy by means of radio frequency identification RFID and RFID system
CN111742323A (en) * 2017-11-29 2020-10-02 ams有限公司 Method for wirelessly supplying energy by means of radio frequency identification RFID and RFID system
CN109766980B (en) * 2019-01-17 2022-05-06 卓捷创芯科技（深圳）有限公司 Circuit and method for improving energy collection of passive radio frequency identification tag of temperature sensor
CN109766980A (en) * 2019-01-17 2019-05-17 卓捷创芯科技（深圳）有限公司 A kind of circuit and method improving the passive radio-frequency identification labeled collection of energy of temperature sensor
CN112241637A (en) * 2019-07-19 2021-01-19 上海双十信息科技有限公司 RFID reader-writer and method for externally controlling on-off of RFID reader-writer
CN112241637B (en) * 2019-07-19 2024-05-14 上海双十信息科技有限公司 RFID reader-writer and method for externally controlling on-off of RFID reader-writer
CN112117999A (en) * 2020-08-25 2020-12-22 广东美的白色家电技术创新中心有限公司 Drive circuit and household appliance
CN111969973B (en) * 2020-08-25 2023-09-15 中国科学院上海高等研究院 A low-power IoT transceiver system with wake-up circuit
CN111969973A (en) * 2020-08-25 2020-11-20 中国科学院上海高等研究院 Low-power consumption thing networking transceiver system with awaken circuit up
CN117010432A (en) * 2023-06-28 2023-11-07 北京智芯微电子科技有限公司 Radio frequency identification product, control method, device and storage medium

Also Published As

Publication number Publication date
CN100458841C (en) 2009-02-04

Similar Documents

Publication Publication Date Title
CN1996352A (en) Semi-active RFID tag supporting wireless charging
US9082057B2 (en) RF device with tamper detection
US20080136594A1 (en) Method and apparatus for stopping power supply in rfid system
CN108596315B (en) RFID label chip circuit capable of preventing repeated use after tearing
US20100277282A1 (en) Radio frequency identification tag
CN102640164B (en) The parameterized RFID antenna extender of oneself
JP2007288718A (en) Information processing terminal, IC card, portable communication device, wireless communication method, and program
CN101923623A (en) Mobile phone platform-based radio frequency identification system
CN104598962A (en) Active passive type double-frequency chip and RFID system
CN101662289B (en) Passive ultrahigh-frequency radio-frequency identification chip decoder and decoding method
US10492140B2 (en) Auxiliary path for low-power device wakeup
EP3862924A1 (en) Agile time-continuous memory operation for a radio frequency identification transponder
CN103679224A (en) Radio frequency tag, mobile terminal, wireless communication system and radio frequency tag charging method
CN201413526Y (en) Novel radio frequency identification (RFID) chip with different frequencies
CN104050561A (en) Financial payment system based on RFID
US20040180637A1 (en) Wireless communication IC and wireless communication information storage medium using the same
CN207965940U (en) RFID tag based on pin interconnection state detection circuit
CN101950349A (en) Non-contact card reader
CN103903045B (en) Mark generation system is taken inventory in the call of ultra-high frequency RFID label chip
CN113792563A (en) Dual-mode radio frequency identification sensor, system and working method
CN102201071A (en) Radio frequency identification tag chip suitable for various frequencies
JP2006350636A (en) Ic tag, reader/writer, and communication method and communication system using them
CN101957926B (en) Radio-frequency card reading and writing circuit controlled and formed by MCU supporting nanoWatt technology
CN114118330B (en) Radio frequency identification integrated integrated circuit and radio frequency identification code providing method
CN112016657A (en) RFID tag chip circuit for preventing secondary utilization and method thereof

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20090204

Termination date: 20131228