RFID systems have been used in numerous applications like asset tracking, toll collection and libraries. The following paper presents our ongoing research for the Auburn University Detection and Food Safety (AUDFS) project to use RFID technology combined with sensors for detection of pathogens in food. AUDFS aims to integrate the breakthroughs in the detection of food borne illnesses with advan...

Electron tube amplifiers may make use of either radio-frequency amplification or audio-frequency amplification, or both. Radio-frequency amplification consists in the amplification of the received radio-frequency current before it is detected. The use of radio-frequency amplification makes it possible to receive a very weak signal which can not be heard at all if only audio-frequency amplificat...