用于UHF RFID的无线供电传感器转发器

TRANSDUCERS 2007 - 2007 International Solid-State Sensors, Actuators and Microsystems Conference Pub Date : 2007-06-10 DOI:10.1109/SENSOR.2007.4300074

P. Pursula, J. Marjonen, H. Ronkainen, K. Jaakkola

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引用次数: 16

摘要

介绍了一种具有外接电容式传感器接口的超高频RFID应答器。传感器接口由一个电容分压器和一个10位连续近似模数转换器组成。功率消耗约为30muwdc，并且应答器由来自读取器设备的RF波无线供电。演示了无线测量电容的距离为30厘米，传输功率为0.5 W。在特定的BiCMOS工艺中，肖特基二极管的整流效率低是导致工作距离低的主要原因。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Wirelessly Powered Sensor Transponder for UHF RFID

A transponder for UHF RFID with sensor interface for external capacitive sensors is described. The sensor interface consists of a capacitive voltage divider and a 10 bit successive approximation analog to digital converter. The power consumption is about 30 muWDC and the transponder is wirelessly powered with RF waves from the reader device. Wireless measurement of capacitance is demonstrated at a distance of 30 cm with 0.5 W erp transmission power. Low operation distance is mostly due to low efficiency of the rectifying Schottky-diodes in the particular BiCMOS process.

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TRANSDUCERS 2007 - 2007 International Solid-State Sensors, Actuators and Microsystems Conference

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