Design and Implementation of FSK Demodulation System Application for RFID and Current Feedback Low-Dropout Voltage Regulator
| Autor: | Shi-Yuan Huang, 黃世源 |
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| Rok vydání: | 2008 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 96 The major research of this thesis can be divided into two parts. The first part of the thesis is to implement a FSK demodulation system for RFID. We proposed an analog demodulation system and a digital demodulation system. The both systems use the same AC-DC converter which provides DC power for demodulation circuit. The analog demodulation circuit is composed of a multiplexer, a phase frequency detector, a charge pump, and a current controlled oscillator. The digital demodulation circuit is composed of a multiplexer, a phase frequency detector, a charge pump, and a shift register. The two demodulation systems are implemented by 3.3V TSMC 0.35μm CMOS 2P4M process. The chip area of analog demodulation system is 0.34mm2 without PAD, and the chip area of digital demodulation system is 0.36mm2 without PAD. In the second part of this thesis, we presented a current feedback low-dropout voltage regulator. We adopted a simple circuit architecture and replaced voltage feedback by current feedback. Therefore, the characteristics of the proposed LDO are low quiescent current and fast transient response. The LDO is implemented by 3.3V TSMC 0.35μm CMOS 2P4M process. The chip area of LDO is 0.25mm2 without PAD. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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