DocumentCode :
3239902
Title :
Taking Advantage of PHEMT Nonlinear Behavior for RFID Applications
Author :
Cabria, L. ; Garcia, J.A. ; Tazon, A. ; Mediavilla, A.
Author_Institution :
Dept. Commun. Eng., Cantabria Univ., Santander
fYear :
2006
fDate :
30-31 Jan. 2006
Firstpage :
42
Lastpage :
45
Abstract :
This paper presents two frequency converting PHEMT-based active antennas to be used in RFID applications. A proper characterization of the transistor nonlinear behavior revealed the existence of two biasing regions where the response signal, the second harmonic or the IF component, can be generated with maximum conversion gain and phase opposition. This attractive issue has been taken advantage of, to BPSK modulate the response in two approaches: in a frequency doubling active antenna and in a phase conjugating circuit for retrodirective arrays. Aperture coupled patch radiators were designed, to integrate these modulators in low cost, compact and high performance transponders
Keywords :
HEMT integrated circuits; UHF frequency convertors; active antennas; aperture antennas; directive antennas; microstrip antennas; radiofrequency identification; transponders; PHEMT; RFID; active antennas; aperture coupled patch radiators; frequency doubling; high electron mobility transistors; phase conjugation; radiofrequency identification; retrodirective arrays; Antenna arrays; Binary phase shift keying; Character generation; Circuits; Frequency conversion; PHEMTs; Phase modulation; Phased arrays; Radiofrequency identification; Signal generators; PHEMT; RFID; active antennas; modulation; nonlinearities; phase conjugation; retrodirective arrays;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Integrated Nonlinear Microwave and Millimeter-Wave Circuits, 2006 International Workshop on
Conference_Location :
Aveiro
Print_ISBN :
0-7803-9722-3
Electronic_ISBN :
0-7803-9723-1
Type :
conf
DOI :
10.1109/INMMIC.2006.283504
Filename :
4062255
Link To Document :
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