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April 2007 [Materials] Developing Designs For RFID Transponder Using DTMOS Transponder design for radio-frequency-identification (RFID) circuits must overcome many of the challenges faced by other low-power electronic applications. RFID transponder circuitry must be low in cost, and must operate over long periods of time on limited power sources. Earlier in the article series (Microwaves & RF, September 2006, p. 57 and October 2006, p. 82), basic design strategies were presented for designing RFID transponder integrated circuits (ICs) and... October 2006 [Systems & Subsystems] Develop Advanced Designs For RFID Transponders Radio-frequency identification (RFID) transponder design techniques were introduced last month, in the opening installment of this two-part article series. This month more advanced methods will be explored for enhancing the performance of UHF RFID transponders, using four design examples in Germany, the United States, Italy, and Switzerland. The German group was involved in pioneering work in UHF RFID, developing a variety of efficient circuit design techniques. However,... September 2006 [Devices & ICs] Developing Designs For RFID Transponders Radio-frequency-identification (RFID) technology has expanded into a wide range of markets. It is particularly well suited to supply-chain management, due to the contact-less, non-line-of-sight nature of the technology. Passive RFID has been on the market at low (125 kHz) and higher (13.56 MHz) frequencies for some time, with various UHF RFID standards established prior to 2003. The Massachusetts Institute of Technology's Auto-ID Center (Cambridge, MA) recognized the... |
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