CN205160520U - Passive NFC communication interface with independent energy receiving antenna - Google Patents
Passive NFC communication interface with independent energy receiving antenna Download PDFInfo
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- CN205160520U CN205160520U CN201520692890.7U CN201520692890U CN205160520U CN 205160520 U CN205160520 U CN 205160520U CN 201520692890 U CN201520692890 U CN 201520692890U CN 205160520 U CN205160520 U CN 205160520U
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Abstract
The utility model belongs to the radio communication field, concretely relates to passive NFC communication interface with independent energy receiving antenna. Passive NFC communication interface includes the radio frequency energy receiving circuit who is used for the passive communication circuit of NFC of passive communication and is used for the receipt of NFC radio frequency energy. The passive receiving circuit of NFC includes NFC communication antenna, communication antenna matching circuit and NFC transceiver, the NFC communication antenna through communication antenna matching circuit with the NFC transceiver is connected. The utility model discloses the passive communication interface's of NFC energy receive power can be improved greatly, a large amount of electric energy are provided for the device that has passive NFC communication interface. These extra electric energy will allow the device to provide more functions, higher performance, better user experience. The utility model discloses the range of application of the passive communication interface of NFC in reaching over the next several years present has been expanded greatly.
Description
Technical field
The utility model belongs to wireless communication field, is specifically related to a kind of passive NFC communication interface with independent energy reception antenna.
Background technology
NFC (near-field communication), owing to employing magnetic field as information carrier, achieves the communication distance (several centimetres) than traditional wireless communication much shorter, has the advantages such as fail safe is high, easy to use.A pith in NFC standard is the succession to high-frequency RF ID passive interface, allows the communication between active NFC interface and passive NFC interface.Specifically, passive NFC interface receives the radio-frequency (RF) energy from active NFC interface is that self and external device (ED) are powered, to maintain device interior computing and PERCOM peripheral communication.NFC passive interface is extensively used for the application such as wireless payment, Bluetooth pairing, point-to-point transmission, passive label at present, and has a wide range of applications at following Internet of Things.But the design of existing passive NFC communication interface is owing to directly inheriting from RFID, and energy acceptance efficiency is very low, only can obtains little energy (about 10mW) from active NFC interface, therefore can only maintain the simple operations of passive device, as reading and writing internal internal memory etc.For in current and the coming years for the extensive application of NFC passive interface, as bank's double-interface card, Novel visual bank card, Intelligent wearable equipment, sensing network etc., so low received power significantly limit the function and performance that these application can provide.
Existing solution is mainly started with from reduction device power consumption, and the energy making this small amount of also can the normal work of holdout device.These schemes comprise manufacturing technology reduction power consumption (as being upgraded to 90nm processing procedure from 130nm processing procedure), increase device dormancy time, reduction device operating frequency etc. that use and upgrade.But, these means or improve installation cost, or limit the performance of device.
Utility model content
For effectively solving the above problems, the utility model provides a kind of passive NFC communication Interface design with independent energy reception antenna, fundamentally solves the problem that NFC passive interface received power is low.
Have a passive NFC communication interface for independent energy reception antenna, be made up of NFC passive communication circuit and radio-frequency (RF) energy receiving circuit, responsible NFC passive communication and NFC radio-frequency (RF) energy receive respectively;
Further, described NFC passive communication circuit is made up of NFC communication antenna, communication antenna match circuit and NFC transceiver;
Further, described radio-frequency (RF) energy receiving circuit is made up of radio-frequency (RF) energy reception antenna, radio-frequency (RF) energy reception antenna match circuit, bridge rectifier and DC/DC;
Further, described radio-frequency (RF) energy reception antenna connects the input of bridge rectifier by radio-frequency (RF) energy reception antenna match circuit, the output of bridge rectifier connects the input of DC/DC, described radio-frequency (RF) energy reception antenna match circuit regulates resonance frequency and the impedance of radio-frequency (RF) energy reception antenna, the radio-frequency (RF) energy of reception is converted to direct voltage by bridge rectifier, and DC/DC is by this direct voltage voltage stabilizing and export;
Further, described DC/DC is low-power high-efficiency switching regulator;
Further, the rectification output end of described radio-frequency (RF) energy receiving circuit connects the power supply of described NFC passive communication interface, for the work of NFC passive communication interface provides whole electric energy;
Further, described NFC passive communication interface is connected with external device (ED) by bus, sends the NFC data that NFC passive communication circuit receives to external device (ED), and receives from external device (ED) NFC data to be sent;
Further, the power supply of described NFC passive communication interface connects external device (ED) by certain forms, and the work for external device (ED) provides all or part of electric energy.
The beneficial effects of the utility model: the utility model can improve the energy acceptance power of NFC passive communication interface greatly, for providing a large amount of electric energy with the device of passive NFC communication interface.Permission device is provided more function by these extra electric energy, higher performance, better Consumer's Experience.The utility model greatly extend NFC passive communication interface current and over the next several years in range of application.
The utility model is different from traditional passive NFC communication interface and uses same antenna to carry out communicating and energy acceptance, the utility model uses stand-alone antenna to be responsible for communication respectively and receives with NFC radio-frequency (RF) energy, allow to be optimized for each antenna separately, while guarantee NFC communication performance, drastically increase radio frequency reception power.This device with passive NFC communication interface provides a large amount of electric energy, allows device to provide more function, higher performance, better Consumer's Experience.The utility model greatly extend NFC passive communication interface current and over the next several years in range of application.
Accompanying drawing explanation
Fig. 1 is electrical structure schematic diagram of the present utility model.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is explained in further detail.Should be appreciated that specific embodiment described herein only for explaining the utility model, and be not used in restriction the utility model.
On the contrary, the utility model is contained any by the substituting of making on marrow of the present utility model and scope of defining of claim, amendment, equivalent method and scheme.Further, in order to make the public have a better understanding to the utility model, in hereafter details of the present utility model being described, detailedly describe some specific detail sections.Do not have the description of these detail sections can understand the utility model completely for a person skilled in the art yet.
As shown in Figure 1, the utility model provides a kind of design with the passive NFC communication interface of independent energy reception antenna, described passive NFC communication interface 4 comprises NFC passive communication circuit and radio-frequency (RF) energy receiving circuit is formed, and responsible NFC passive communication and NFC radio-frequency (RF) energy receive respectively; Wherein said NFC passive communication circuit comprises NFC communication antenna 1, communication antenna match circuit 2, NFC transceiver 3, provides NFC passive communication function; Described radio-frequency (RF) energy receiving circuit comprises radio-frequency (RF) energy reception antenna 10, radio-frequency (RF) energy reception antenna match circuit 9, bridge rectifier 8, DC/DC7, provides NFC radio-frequency (RF) energy receiving function; Described NFC communication antenna 1 connects NFC transceiver 3 by communication antenna match circuit 2; Described NFC communication antenna 1 receives the signal having source interface from NFC, and sends the signal of NFC transceiver 3 generation; Described communication antenna match circuit 2 by the impedance adjustment of NFC communication antenna 1 to mating with NFC transceiver 3; The demodulation of described NFC transceiver 3 is from the signal of antenna, and the signal of antenna is issued in modulation; Described radio-frequency (RF) energy reception antenna 10 connects the input of bridge rectifier 8 by radio-frequency (RF) energy reception antenna match circuit 9, and the output of bridge rectifier 8 connects the input of DC/DC7; Described radio-frequency (RF) energy reception antenna 10 receives the radio-frequency (RF) energy that NFC has source interface to send; Radio-frequency (RF) energy reception antenna 10 is tuned to the resonance frequency of 13.56Mhz by described radio-frequency (RF) energy reception antenna match circuit 9, and antenna impedance is converted into OK range according to actual loading situation; Radio-frequency (RF) energy is sent to bridge rectifier 8 and carries out rectification after impedance transformation, and the direct voltage of gained is converted to suitable voltage through DC/DC7, for passive NFC communication interface 4 is powered; Described passive NFC communication interface 4 is connected with external device (ED) 5 by data/address bus, and the NFC data that the passive NFC communication interface 4 of process receives is responsible for by external device (ED) 5, and the NFC data providing passive NFC communication interface 4 to send; The power supply of described passive NFC communication interface 4 exports and is also connected with external device (ED) 5, is used for external device to send the energy of passive NFC communication interface 4 reception.
stand-alone antenna structure:
Being different from traditional passive NFC communication interface uses same antenna to carry out communicating and energy acceptance, passive NFC communication interface 4 use stand-alone antenna (NFC communication antenna 1 and radio-frequency (RF) energy reception antenna 10) be respectively responsible for communicate and NFC radio-frequency (RF) energy receive.Use single antenna significantly limit the NFC radio-frequency (RF) energy that system can receive.
Passive NFC communication interface 4 uses at least two antennas, and NFC communication antenna 1 and radio-frequency (RF) energy reception antenna 10 are responsible for communicating and energy acceptance respectively.Owing to can be optimized respectively multiple antenna, communication performance and receiving efficiency can be taken into account.
Passive NFC communication interface 4 can use more than two antennas according to actual conditions, to improve performance and range of receiving.
radio-frequency (RF) energy receiving circuit designs:
Radio-frequency (RF) energy receiving circuit is made up of radio-frequency (RF) energy reception antenna 10, radio-frequency (RF) energy reception antenna match circuit 9, bridge rectifier 8 and DC/DC7, and effect is that the radio-frequency (RF) energy having source interface to send NFC is converted to direct current energy with loss little as far as possible.Radio-frequency (RF) energy reception antenna match circuit 9 be responsible for by radio-frequency (RF) energy reception antenna 10 be tuned to the resonance frequency of 13.56Mhz, and according to actual loading, antenna impedance is adjusted to appropriate level.Bridge rectifier 8 is used for 13.56Mhz radiofrequency signal to be converted into direct current energy, and DC/DC7 is by this direct voltage voltage stabilizing.In order to reduce transition loss as far as possible, bridge rectifier 8 can adopt high velocity, low pressure to fall Schottky diode, and DC/DC7 can use low power consumption high efficiency buck, boost or switching capacity type pressurizer.
Claims (2)
1. have a passive NFC communication interface for independent energy reception antenna, it is characterized in that, described passive NFC communication interface comprises for the NFC passive communication circuit of passive communication and the radio-frequency (RF) energy receiving circuit for the reception of NFC radio-frequency (RF) energy;
Described NFC passive communication circuit comprises NFC communication antenna, communication antenna match circuit and NFC transceiver; Described NFC communication antenna is connected with described NFC transceiver by communication antenna match circuit;
Described radio-frequency (RF) energy receiving circuit comprises radio-frequency (RF) energy reception antenna, radio-frequency (RF) energy reception antenna match circuit, bridge rectifier and DC/DC; Described radio-frequency (RF) energy reception antenna connects the input of bridge rectifier by radio-frequency (RF) energy reception antenna match circuit, and the output of described bridge rectifier connects the input of DC/DC, and the output voltage of described DC/DC is that passive NFC communication interface is powered.
2. a kind of passive NFC communication interface with independent energy reception antenna according to claim 1, it is characterized in that, described passive NFC communication interface is exported by data/address bus and power supply and is connected with external device (ED), external device (ED) receives and processes the NFC data of passive NFC communication interface, and provides passive NFC communication interface to need the NFC data sent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520692890.7U CN205160520U (en) | 2015-09-08 | 2015-09-08 | Passive NFC communication interface with independent energy receiving antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520692890.7U CN205160520U (en) | 2015-09-08 | 2015-09-08 | Passive NFC communication interface with independent energy receiving antenna |
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| Publication Number | Publication Date |
|---|---|
| CN205160520U true CN205160520U (en) | 2016-04-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520692890.7U Withdrawn - After Issue CN205160520U (en) | 2015-09-08 | 2015-09-08 | Passive NFC communication interface with independent energy receiving antenna |
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| CN (1) | CN205160520U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105099527A (en) * | 2015-09-08 | 2015-11-25 | 王清斌 | Passive Near Field Communication (NFC) communication interface having independent energy receiving antenna |
| CN110648446A (en) * | 2019-11-01 | 2020-01-03 | 深圳市红芯微科技开发有限公司 | NFC passive lock with secret key authentication |
| CN114067460A (en) * | 2020-07-27 | 2022-02-18 | 宁波生久柜锁有限公司 | A passive electronic lock system based on NFC wireless power supply to unlock |
-
2015
- 2015-09-08 CN CN201520692890.7U patent/CN205160520U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105099527A (en) * | 2015-09-08 | 2015-11-25 | 王清斌 | Passive Near Field Communication (NFC) communication interface having independent energy receiving antenna |
| WO2017041496A1 (en) * | 2015-09-08 | 2017-03-16 | 王清斌 | Passive nfc communication interface having independent energy receiving antenna |
| CN105099527B (en) * | 2015-09-08 | 2018-07-20 | 王清斌 | A kind of passive NFC communication interface with independent energy reception antenna |
| CN110648446A (en) * | 2019-11-01 | 2020-01-03 | 深圳市红芯微科技开发有限公司 | NFC passive lock with secret key authentication |
| CN114067460A (en) * | 2020-07-27 | 2022-02-18 | 宁波生久柜锁有限公司 | A passive electronic lock system based on NFC wireless power supply to unlock |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Xing Guoliang Assignor: Wang Qingbin Contract record no.: 2017110000006 Denomination of utility model: Passive Near Field Communication (NFC) communication interface having independent energy receiving antenna Granted publication date: 20160413 License type: Exclusive License Record date: 20170426 |
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| EE01 | Entry into force of recordation of patent licensing contract | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160413 Effective date of abandoning: 20180720 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20160413 Effective date of abandoning: 20180720 |
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |