AN UNBIASED DUAL-MODE MIXING ANTENNA FOR WIRELESS TRANSPONDERS

作者：Garcia J A; Cabria L^*; Marante R; Rizo L; Mediavilla A

来源：Progress in Electromagnetics Research-Pier, 2010, 102: 1-14.

DOI：10.2528/PIER09122209

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.

• 出版日期2010