Increasing of Operation Range of System of RFID and Positioning
Increasing of Operation Range of System of RFID and Positioning
复制标题
RFID和定位系统操作范围的扩大
DOI：
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发表时间：
2020
影响因子：
3.1
通讯作者：
I. Shirokov
中科院分区：
文献类型：
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作者：
I. Shirokov
本文是一个大规模的调查对象（标签）的识别和定位领域的一部分。主要关注的是在扩展的操作范围内的距离标签的测量，和相位无线电工程系统与零差信号转换的建议实施。这样的系统可以同时识别和定位多个对象。该系统的功能假设标签操作在接收和发送模式同时和非常接近的频率，每个标签有自己的频移，这确保其识别。本文讨论了RFID系统在扩展工作范围和所需条件下的工作问题。考虑了系统运行的基本方程。提出了一种提高系统链路能量的方法。这种方法假设在转发器设计中使用单端口反射晶体管放大器。单端口谐振晶体管放大器的仿真、设计和实验研究。单口放大器仅由场效应管和谐振电路组成。放大器增益是通过使用正反馈来实现的，这使得该反射放大器成为再生放大器。放大器保证了优良的电气特性：增益约为30 dB，噪声系数约为5 dB。所述信号放大保证了系统工作范围的充分扩展。放大器的设计是最简单的。放大器功耗可以忽略不计。所有上述内容使得所描述的放大器在射频识别和目标定位系统的实施期间的有源应答器设计中非常有用。
The presented paper is a part of large-scale investigations in a field of object (tag) identification and its positioning. The main attention is paid to distance-to-tag measurements in extended operation range, and the phase radio engineering system with homodyne signal conversion is proposed for implementation. Such a system can identify and localize several objects simultaneously. The system functioning assumes the tag operation in receiving and transmitting modes simultaneously and with very close frequencies, and each tag has its own shift frequency, which ensures its identifying. The problems of RFID system operation in extended operation range and mentioned conditions are discussed in the paper. Base equations of system operation are considered. One way of system link energy increasing is suggested. This approach assumes the use of one-port reflection transistor amplifier in transponder design. The simulation, design, and experimental study of one-port resonant transistor amplifier are considered. One-port amplifier consists of field-effect transistor and resonant circuit only. The amplifier gain is achieved by the use of positive feedback, which makes this reflection amplifier the regenerative one. Amplifier ensures excellent electrical characteristics: gain is about 30 dB and noise factor is about 5 dB. Mentioned signal amplification ensures adequate extending of system operation range. The design of amplifier is simplest. The amplifier power consumption is negligible. All of mentioned above makes described amplifier extremely useful in active transponder design during the implementation of system of radio frequency identification and object positioning.