Invisible Smart Hybrid Tag

Student thesis: Master's Thesis


Over the past few years, the topics of reliability and security have begun to draw a huge deal of research attention. Nowadays, hardware security using Radio Frequency Identification (RFID) technologies plays a significant role in the UAE and emphasizes the strategic goals of the Abu Dhabi 2030 Vision. RFID system has been developed and used in various applications. Basically, it is composed of various parts - transponders (also called TAGs or labels) and interrogators (also called readers or coupling devices). The aim of this project is to design and simulate a small footprint hybrid tag that can be used in various applications as most of the commercial tags are inapplicable to be integrated due to the size limitation. The inspiration behind such a project comes from the demand of having a smart hybrid tag that cannot be seen with the naked eye and due to its hybrid operation (light and mm-Waves) achieves a high level of security. The hybrid includes a photodiode-stack, a clock extraction stage, a voltage-regulator, fuse memory, shift registers and a back scatter transmitter operating at 240GHz with an integrated antenna. The tag is realized in a bulk CMOS 65nm technology. In this project, the focus was on the hybrid tag which includes photodiodestack, clock extraction and voltage-regulator. Photodiode-stack acts as a power supply for the Smart Tag circuit, biased form the laser light and it is designed to produce about 900mV using two cascade stages. The clock-extraction circuit is working at 10MHz and is capable of extracting the clock with different input voltages supplied by photodiode-stack. Finally, a voltage-regulator delivers a constant voltage of 650mV, independent of power-supply and temperature variations. The regulator will bias all digital circuitry.
Date of AwardDec 2017
Original languageAmerican English


  • hardware security
  • Radio Frequency Identification (RFID) technologies
  • voltage-regulator
  • footprint Hybrid
  • TAGS/labels.

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