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A slot antenna with magnetoelectric elements
Author(s) -
Petrov Roman V.,
Murthy Devata V. B.,
Sreenivasulu Gollapudi,
Srinivasan Gopalan
Publication year - 2013
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.27398
Subject(s) - slot antenna , antenna (radio) , materials science , microstrip antenna , optoelectronics , engineering , electrical engineering
A ferrite–ferroelectric bilayer is used in a slot antenna for static magnetic and electric field control of the radiation characteristics of the antenna. A π‐type slot antenna with the resonance frequency ranging from 1.5 to 2.7 GHz, depending on the slot length, is studied. A bilayer of yttrium iron garnet (YIG) on gadolinium gallium garnet bonded to lead zirconate titanate (PZT) is used as the magnetoelectric element. Under a static magnetic field H corresponding to the ferromagnetic resonance in the YIG film, a substantial increase in the power transmitted by the antenna is measured. A dc electric field applied to PZT results in a phase shift of the radiated signal, by 220° for 200 V. The radiation patterns of the antenna show directional characteristics. The demonstrated electric and magnetic field control of antenna characteristics is of interest for applications in phased arrays and beam‐forming antennas. © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:533–535, 2013; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.27398