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Non-contact Ic Card Antenna Integrated Chip Design,

Posted on:2004-07-25Degree:DoctorType:Dissertation
Country:ChinaCandidate:H NiFull Text:PDF
GTID:1118360125465618Subject:Microelectronics and Solid State Electronics
Abstract/Summary:PDF Full Text Request
The most significant feature of contact-less IC card system is the adopting of RFID technology. Because of this reason, besides the inherent benefits of IC card such as large storage capability, high security, wide application range and low requirement on the network, it has several extra advantages: high reliability and security, high processing speed, ability to identify IC cards moving at high speed or process several IC cards at the same time, and one card can be used for several applications. Since it is contact-less, it can be packaged in different forms according to various requirements. Because of its excellence, contact-less IC card system has already been widely used in advanced nations. And it is more and more widely used in China. So, to study, design, and apply the contact-less IC card system has great practical value.Till now, the RF interface circuit, control logic and data storage module have already been implemented on chip. But the card antenna, which is necessary for energy obtaining and data transmission has not been integrated. This results in high cost and applications restricted. So it is necessary to research on the integration of card antenna and to implement the whole IC card system on single chip, in order to make IC card more and more ubiquitous.Based on the deep study of relative theories and technologies, this thesis did a lot of experiments to verify the feasibility of antenna integration and worked out satisfying results. After that, we finished the system design of the contact-less IC card according to ISO 15693. Some new ideas and design methodologies have been put forward to solve the concrete problems. Main contents of the thesis are as follows:Firstly, an introduction to the system principle of contact-less IC card, including system construction and RF communication technologies. A comparison between the existing standards for contact-less IC card is made, and a description of the IC card operation process is given;Secondly, design of the integrated card antenna. The work includes a deep study of the coupling principle of the antenna, then experiments on antenna miniaturization,a review & summarize on available methods to improve the performance of integrated inductors, analysis of design aspects and modeling for CMOS compatible on-chip antenna, and last the whole design method is demonstrated by experiment result;Thirdly, the RF interface circuits for the contact-less IC card have been studied and designed. In accordance with the integrated antenna which can only provide relative low power, a novel low voltage consumption power supply generating circuit is designed. Referring to ISO15693, a demodulation method for both 10% and 100% ASK signal has been brought forward. And design of other modules in the RF interface is completed;Fourthly, The data security system of the contact-less IC card was studied thoroughly, and the CRC coprocessor and the anti-collision control circuit were designed;Fifthly, on the basis of the full understanding ISO 15693, the operation process of the card was analyzed, and the control logic circuits were designed;Sixthly, an on-chip programming voltage generation circuits and the whole system of 512Bits EEPROM have been studied and designed, a new kind of low-power-dissipation and high-noise-immunity charge pump design has been put forward in this thesis;Finally, an brief introduction to a contact-less IC card based on a protocol established by the author. This work is done previous to the ISO 15693 compatible design, and has got a R/W distance of 20cm.The designed circuits and on-chip antenna in the dissertation were simulated and verified by EDA tools. The design and simulation work of the whole integrated contact-less IC card utilizing the on-chip antenna thus for which no packaging is needed has finished and so does layout work. It will be fabricated on the 1.2m EEPROM process line of Shanghai Belling.
Keywords/Search Tags:Non-contact
PDF Full Text Request
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