Title :
Reconfigurable planar directional antennas printed on ferrimagnetic substrates
Author :
Zervos, T. ; Alexandridis, A.A. ; Lazarakis, F. ; Dangakis, K. ; Kakoyiannis, Constantine G. ; Varouti, E. ; Vardaxoglou, J.C.
Author_Institution :
Nat. Centre for Sci. Res. Demokritos, Inst. of Inf. & Telecommun., Athens, Greece
Abstract :
This paper presents two different printed directional antenna designs that use a ferrimagnetic compound (YIG) as part of their substrates. It investigates the influence of this material on the antenna radiation characteristics under the application of an external magnetic field. It was found that the proper application of the magnetic field in each design changes the antenna resonance and the radiation pattern. Especially in the second proposed design the polarization characteristics are also changed and the antenna is reconfigured from linearly to circularly polarized.
Keywords :
antenna radiation patterns; directive antennas; electromagnetic wave polarisation; ferrimagnetic materials; magnetic resonance; microstrip antennas; planar antennas; YIG; antenna radiation characteristics; antenna resonance; circular polarization; external magnetic field; ferrimagnetic substrates; linear polarization; magnetic field application; printed planar directional antennas reconfiguration; radiation pattern; Antenna radiation patterns; Directive antennas; Magnetic fields; Microstrip antennas; Substrates; Yagi-Uda antennas; ferrimagnetic materials; reconfigurability;
Conference_Titel :
Antennas and Propagation (EuCAP), 2014 8th European Conference on
Conference_Location :
The Hague
DOI :
10.1109/EuCAP.2014.6901773
