SHF: Small: AC powered digital circuits

SHF：小型：交流供电数字电路

基本信息

批准号：
1422172
负责人：
Paul Franzon
金额：
$ 44.57万
依托单位：
North Carolina State University
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2014
资助国家：
美国
起止时间：
2014-08-01 至 2020-06-30
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=1422172&HistoricalAwards=false
关键词：
SHF Small AC powered digital

项目摘要

The RFID chips are at the core of the tags typically attached to commercial items in the marketplace - although they can have a lot more uses. The main goal of this project is to reduce the cost of RFID chips by eliminating most of the circuitry needed for managing the recovered power on the chip. This technique has potential to reduce the chip cost by about one-third. Another variant of this technology permits tags to operate at high efficiency, and thus at low RF or magnetic power levels. The research also has potential to increase the range at which the RFID tag can be powered. A successful outcome will open new market opportunities to use RFID technology. The main technique employed in this project is to directly operate the circuits from recovered wireless power. A new chip design technique has been identified for doing this and will be exploited and further explored in this project. At the core of this proposal is a new circuit structure, one that permits digital and some analog operations to be performed from an AC, rather than DC, power supply. Unlike previous AC powered circuit concepts the proposed method can be powered from RF sources up to approximately the unity gain frequency of the device technology at that operating voltage. This circuit structure is likely to work well at next generation RFID frequencies in the 860 to 960 MHz range as well. Demonstrations at the level of complete RFID tags are planned.

RFID 芯片是标签的核心，通常贴在市场上的商品上 - 尽管它们还有更多用途。该项目的主要目标是通过消除管理芯片上恢复电源所需的大部分电路来降低 RFID 芯片的成本。该技术有可能将芯片成本降低约三分之一。该技术的另一种变体允许标签以高效率运行，从而在低射频或磁功率水平下运行。该研究还有可能扩大 RFID 标签的供电范围。成功的结果将为使用 RFID 技术开辟新的市场机会。该项目采用的主要技术是通过恢复的无线电源直接操作电路。已经确定了一种新的芯片设计技术可以实现此目的，并将在该项目中加以利用和进一步探索。该提案的核心是一种新的电路结构，该结构允许通过交流电源而不是直流电源执行数字和一些模拟操作。与之前的交流供电电路概念不同，所提出的方法可以由射频源供电，最高可达该工作电压下设备技术的单位增益频率。这种电路结构也可能在 860 至 960 MHz 范围内的下一代 RFID 频率下正常工作。计划进行完整 RFID 标签级别的演示。