A slot antenna with magnetoelectric elements

作者：Petrov Roman V; Murthy Devata V B; Sreenivasulu Gollapudi; Srinivasan Gopalan^*

来源：Microwave and Optical Technology Letters, 2013, 55(3): 533-535.

DOI：10.1002/mop.27398

• ferrite
• piezoelectric
• slot antenna
• magnetoelectric

A ferriteferroelectric bilayer is used in a slot antenna for static magnetic and electric field control of the radiation characteristics of the antenna. A p-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 degrees 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.

• 出版日期2013-3