CN203773552U

CN203773552U - Radio frequency identification (RFID) chip having high frequency (HF) and ultra high frequency (UHF) dual bands

Info

Publication number: CN203773552U
Application number: CN201420094540.6U
Authority: CN
Inventors: 邸鹏; 向晓安
Original assignee: JIANGSU KILOWAY ELECTRONIC TECHNOLOGY Co Ltd
Current assignee: Sichuan Kailuwei Technology Co ltd
Priority date: 2014-03-03
Filing date: 2014-03-03
Publication date: 2014-08-13
Anticipated expiration: 2024-03-03

Abstract

A radio frequency identification (RFID) chip having high frequency (HF) and ultra high frequency (UHF) dual bands relates to the RFID technology. The chip provided by the utility model is internally provided with a HF module and a UHF module. The RFID chip provided by the utility model has the advantages of near field communication (NFC) mobile phone read and write and long communication distance; and compared with those in dual-chip schemes, packaging complexity and costs are greatly reduced, and the tag reliability is high.

Description

The RFID chip of a kind of HF and UHF two-band

Technical field

The utility model relates to RFID technology.

Background technology

Every profession and trade widespread use of RFID label at present.RFID label is divided into LF(low frequency), HF(high frequency), UHF(ultrahigh frequency), uW(microwave) etc. frequency range, wherein that conventional is HF and UHF.The feature of HF label is to support the read-write of NFC mobile phone but near distance, the feature of UHF label be communication distance far but do not support the read-write of NFC mobile phone.The RFID label that needs two-band in some field, but the current RFID chip of simultaneously not supporting two-band.If encapsulate each of the RFID chip of HF and UHF on label, will cause that packaging technology complexity and cost rise, reliability declines.

Utility model content

The technical scheme that the utility model solve the technical problem employing is that the RFID chip of a kind of HF and UHF two-band, is characterized in that, is provided with phase HF module and UHF module in a chip simultaneously.

HF module and UHF module can be separate on circuit, also can share a memory storage.

Described HF module comprises that HF AFE (analog front end), HF receipt decoding circuit, HF send coding circuit, HF host state machine circuit, HF memorizer control circuit and HF memory circuitry, and described UHF module comprises that UHF AFE (analog front end), UHF receipt decoding circuit, UHF send coding circuit, UHF host state machine circuit, UHF memorizer control circuit, UHF memory circuitry.

The beneficial effects of the utility model are:

1, have the read-write of NFC mobile phone and the communication distance advantage far away supported concurrently.

2,, compared with dual chip scheme, encapsulation complexity and cost all reduce greatly.

3, compared with dual chip scheme, reliability is high.

Accompanying drawing explanation

Fig. 1 is structural representation of the present utility model.

Embodiment

Referring to Fig. 1.

Feature of the present utility model is: designed a kind of RIFD chip of novel concept, on same chip, have respectively HF and UHF RF AFE (analog front end), receipt decoding circuit, each is a set of to send coding circuit, host state machine circuit, memorizer control circuit, memory circuitry etc.Consider that UHF is very high to low-power consumption requirement, isolated physically UHF circuit is to the current channel of HF circuit.For adapting to encapsulation, two groups of pressure welding point of HF and UHF have been designed.In order to prevent disturbing to each other, the pressure welding point of HF and UHF should be divided and is listed in chip two ends, and position is as far as possible far away.

Specifically, in a chip, be designed with separate HF module and UHF module simultaneously.

HF has two PAD(pressure welding point conventionally), for connecting high frequency antenna; UHF has three PAD conventionally, except two connection ultra-high frequency antennas, also has a public ground.This chip, because will support HF and UHF simultaneously, always has five PAD.In layout design, consider and prevent phase mutual interference, by the PAD subregion design of HF and UHF.

Instructions has absolutely proved principle of the present utility model and necessary technology content, and those of ordinary skill can be implemented according to instructions, thus repeat no more more detailed details, for example HF module and UHF module, its concrete structure is prior art.

Claims

1. a RFID chip for HF and UHF two-band, is characterized in that, is provided with HF module and UHF module in chip.

2. the RFID chip of HF as claimed in claim 1 and UHF two-band, is characterized in that, HF module and UHF module are separate on circuit.

3. the RFID chip of HF as claimed in claim 1 and UHF two-band, is characterized in that, HF module and UHF module share a memory storage.

4. the RFID chip of HF as claimed in claim 1 and UHF two-band, it is characterized in that, described HF module comprises that HF AFE (analog front end), HF receipt decoding circuit, HF send coding circuit, HF host state machine circuit, HF memorizer control circuit and HF memory circuitry, and described UHF module comprises that UHF AFE (analog front end), UHF receipt decoding circuit, UHF send coding circuit, UHF host state machine circuit, UHF memorizer control circuit, UHF memory circuitry.