Sound card based RFID sniffer/emulator (Too tired after recon.cx to do draw the schematics better than that :) Stay tuned for the next version including Tag emulation.) baudline FFT signal analyzer for sniffing LF RFID tags using our sound card based…

http://www.f4grx.net/projet-module-nfc/ The NFC is a contactless communication technology, which is used for transport cards and other contactless cards CB. The signal is modulated at a frequency of 13.56 MHz, which is a "ISM" band as the 2.4 GH…

不同频段的RFID产品会有不同的特性,本文详细介绍了无源的感应器在不同工作频率产品的特性以及主要的应用. 目前定义RFID产品的工作频率有低频.高频和甚高频的频率范围内的符合不同标准的不同的产品,而且不同频段的RFID产品会有不同的特性. 其中感应器有无源和有源两种方式,下面详细介绍无源的感应器在不同工作频率产品的特性以及主要的应用. 1． 低频(从125KHz到134KHz)   其实RFID技术首先在低频得到广泛的应用和推广.该频率主要是通过电感耦合的方式进行工作, 也就是在读写器线圈和感应…

RFID读写器的工作原理 RFID的数据采集以读写器为主导,RFID读写器是一种通过无线通信,实现对标签识别和内存数据的读出和写入操作的装置. 读写器又称为阅读器或读头(Reader).查询器(Interrogator).读出装置(Reading Device). 扫描器(Scanner).通信器(Communicator).编程/编码器(Programmer)等等. 读写器工作原理 RFID读写器的基本原理是利用射频信号与空间耦合传输特性,使电子标签与阅读器的耦合元件在射频耦合通道内进行能量传…

This 125 kHz RFID reader http://www.serasidis.gr/circuits/RFID_reader/125kHz_RFID_reader.htm http://www.serasidis.gr/circuits/RFID_reader/images/125kHz_RFID_reader_schem.GIF I will try to explain with simple words how the RFID works. The ATtiny13 use…

The inverted-F antenna is shown in Figure 1. While this antenna appears to be a wire antenna, after some analysis of how this antenna radiates, it is more accurately classified as an aperture(孔) antenna. Figure1. Geometry of Inverted-F Antenna The fe…

24GHz和77GHz毫米波雷达技术细节 FMCW Radar Sensitivity Measurement Tech Field Test and Raw Data Analysis Capability Field Test Equipment Setting Structure Vidshow - Range Doppler & X-Y Plot (Target Detection Algorithm Tuning) Test Program - Target Data Recordin…

From: http://liudongdong1.github.io keyword: Human-centered computing , LoRa Paper: WIDESEE WIDESEE: Towards Wide-Area Contactless Wireless Sensing Summary WIDESEE presents solutions across software and hardware to overcome two aspects of challenges…

The Octane SDK includes the core library by acting as a wrapper for extraction, modifying, and the application of a Reader's Low Level Reader Protocol (LLRP) settings, as well as high-level control over Reader settings, tag query, and tag-write opera…

Passive RFID Basics - AN680 INTRODUCTION Radio Frequency Identification (RFID) systems use radio frequency to identify, locate and track people, assets and animals. Passive RFID systems are composed of three components – a reader (interrogator), pass…