本論文為雙頻段15位元CMOS被動式UHF RFID Tag，主要應用於室內定位系統。雙頻段為866/925MHz的power link與433MHz的data link，使用866/925MHz的連續弦波訊號做為電路充電及提供Tag反散射用，而使用433MHz傳送資料調變過後的訊號給Tag做判斷及編碼。
本論文著重於極低讀取功率的RFID Tag設計，無穩壓器及震盪器，利用low power voltage reference電路取代穩壓器達到降低功率損耗、增加動態範圍的目的。使用新型疊接式架構的倍壓器，減少外部匹配電路的使用，使晶片與天線較易匹配在一起以增加RFID tag讀取距離，量測最低讀取功率power link為-23.06 dBm、data link為-41.15 dBm，本論文利用台灣積體電路(TSMC) 0.18um Mixed signal/RF 1P6M CMOS製程實現。

This thesis presents a dual-band CMOS 15-bit passive UHF radio-frequency-identification(RFID) tag chip. The tag is used in an RFID indoor localization system. We employ dual-band communication links (the power link and the data link) respectively in 866/925MHz and 433MHz. The continuous wave operates at 866/925MHz for charging the tag and backscattering the RF signal. The 433-MHz band is for receiving and decoding the modulated signal.
This thesis presents the lowest input sensitivity CMOS RFID design up to now. There are no regulator and oscillator in the proposed tag. In order to reduce the power consumption and increase the dynamic range, we use a low power voltage reference circuit to replace the regulator. We use a new stacked charge pump circuit to simplify the work of input matching. The chip matches the antenna efficiently such that the reading distance is increased. The input sensitivity of the power link can achieve -23.06 dBm and the data link can achieve -41.15 dBm. The proposed RFID tag is fabricated in TSMC 0.18um mixed signal/RF 1P6M CMOS process.

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