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Antenna device on ultrahigh frequency RFID chip

An antenna device and ultra-high frequency technology, which is applied to record carriers, instruments, computer parts, etc. used in machines, and can solve the problems of different contact areas, chip-to-chip consistency, and high cost.

Inactive Publication Date: 2020-11-20
上海明矽微电子有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The area of ​​the external antenna is large and the process is cumbersome, resulting in high cost
Flip packaging technology also has disadvantages, such as cumbersome process, high cost, and due to the small size of the chip, the conductive glue will make the contact area between the chip and the antenna different, which will cause consistency problems between the chip and the chip

Method used

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  • Antenna device on ultrahigh frequency RFID chip
  • Antenna device on ultrahigh frequency RFID chip
  • Antenna device on ultrahigh frequency RFID chip

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0012] based on the following figure 2 , image 3 with Figure 4 , specifically describe the preferred embodiment.

[0013] Such as figure 2 As shown, the UHF radio frequency identification system consists of a reader and an UHF electronic tag. A typical reader includes a high-frequency module (transmitter and receiver), a control unit, and an antenna device connected to a transponder; the UHF electronic tag is the real data carrier of the UHF radio frequency identification system, usually It consists of an external antenna and a UHF chip. Outside the response range of the reader, the tag is passive. Tags usually do not have their own power supply, only within the response range of the reader, the tag has energy supply. The energy required for the tag to work is transmitted to the tag through the antenna, just like the clock pulse and data.

[0014] Such as image 3 As shown, the antenna device on a UHF RFID chip of the present invention has a form of an open specifi...

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PUM

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Abstract

The invention discloses an on-chip electromagnetic backscatter coupled antenna device which is characterized in that the antenna device can be manufactured together with an ultrahigh frequency chip through a CMOS process, and an independent ultrahigh frequency electronic tag with a transceiving antenna is formed after the CMOS process is completed; the antenna device can be directly used on a metal surface or other object surfaces capable of interfering with the metal antenna. According to the antenna device, the area of the ultrahigh frequency tag antenna is reduced to a millimeter level; theantenna device does not need to be connected with the chip and the antenna through an inverted packaging technology; the performance and consistency of the ultrahigh frequency tag are improved.

Description

technical field [0001] The invention belongs to the technical field of integrated circuits, specifically, the design field of ultra-high frequency RFID chips. Background technique [0002] RFID stands for Radio Frequency Identification, which is a communication technology that can identify a specific target through radio signals and read and write related data without the need for an identification system to establish physical or optical contact with a specific target. RFID can be used as a unique ID card for each object, and it is also the basis for identification, communication and interconnection of each object in the Internet of Things. In recent years, with the development of technologies such as large-scale integrated circuits, network communications, and information security, RFID systems have become more and more widely used in our lives, and RFID electronic tags are one of them. [0003] RFID can be divided into low frequency (LF), high frequency (HF), ultra high f...

Claims

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Application Information

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IPC IPC(8): G06K19/077
CPCG06K19/07775G06K19/07777
Inventor 韦强张建伟
Owner 上海明矽微电子有限公司
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