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A single-chip UHF RFID reader transceiver for mobile applications has been fabricated in 0.18μm SiGe BiCMOS technology. The chip includes all transceiver blocks as RX/TX RF front-end, RX/TX analog baseband, frequency synthesizer and I2C with fully-compliant China 800/900MHz RFID draft, ISO/IEC 18000-6C protocol and ETSI 302 208-1 local regulation. The receiver in the presence of −3dBm self-jammer...
This paper proposes a systematic study of IC immunity for a TX/RX digital system, implemented in a FPGA board. A DPI setup is used to measure the immunity of signal I/O ports to conducted continuous-wave interference. The injection path from RF noise source to input pin is characterized to define the injected power level causing a malfunction on the TX/RX system, up to 250 MHz. The impact of data...
We propose an efficient tag collision detection method using the asynchronous mode of the RF transceiver for active RFID systems. In the proposed method, active RFID tags communicate using the synchronous mode of the RF transceiver to reduce the packet processing overheads and power consumption, but the active RFID reader uses the asynchronous mode for packet reception from the tags to detect the...
In the field of embedded wireless data communication system, such as remote measurement and control, wireless meter reading, information appliances, wireless mouse or keyboard, it usually needs to design a small custom protocol to directly access the hardware. To solve this problem, designed an embedded wireless data communication protocol, Using special data frame format to solve unreliable data...
Pervasive applications often require context information about the posture, ambulatory and work activity of the user. This paper reports ongoing work on the development of a low cost ergonomic approach to motion capture that provides the opportunity to examine diverse body movement in home and office environments. In this research case it is applied to the automatic training of Tai Ji Quan at different...
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