volume | PIER Journals

Abstract

A zero-bias dual-mode mixing antenna for wireless transponders is proposed in this paper. Designed over an Enhancement-mode Pseudomorphic HEMT (E-PHEMT), the mixer takes advantage of the device nonlinear characteristics around cold operation. Simple closed form expressions, obtained from time-varying circuit analysis, predict good conversion efficiency in two different operating modes without requiring DC bias. For validation, a lab prototype has been implemented and tested, to be finally integrated in a compact active printed antenna suitable for wireless sensor networks or other radio frequency identification (RFID) applications.

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Dr. Jose Angel Garcia

Dr. Lorena Cabria de Juan

Dr. Reinel Marante

Dr. Leysi Rizo

Dr. Angel Mediavilla Sanchez