Title :
A phase-modulating RF tag
Author :
Wang, Yang ; Tennant, Alan ; Langley, Richard
Author_Institution :
Dept. of Electron. & Electr. Eng., Univ. of Sheffield, Sheffield, UK
Abstract :
A new form of RFID tag based on the concept of a phase-modulating surface is presented. The tag consists of a two by two array of pin diode controlled dipole elements. By applying individual d.c. control signals to each of the diodes, it is possible modulate RF energy scattered from the tag. An experimental system is described and measurements made at 10GHz are presented to show that the tag can impart binary phase modulation onto interrogating signals.
Keywords :
electromagnetic wave scattering; p-i-n diodes; phase modulation; radiofrequency identification; radiofrequency measurement; D.C. control signal; RF energy scattering; RFID tag; binary phase modulation; frequency 10 GHz; interrogating signal; phase modulating RF tag; pin diode controlled dipole element; Arrays; Constellation diagram; Phase modulation; Radio frequency; Scattering; Surface impedance; Switches;
Conference_Titel :
Antennas and Propagation Conference (LAPC), 2011 Loughborough
Conference_Location :
Loughborough
Print_ISBN :
978-1-4577-1014-8
Electronic_ISBN :
978-1-4577-1015-5
DOI :
10.1109/LAPC.2011.6114073
