Title :
Antenna array of circular patches on ferrite substrate
Author :
How, Hoton ; Fang, Ta-Ming ; Liu, Wei ; Vittoria, Carmine ; Champion, Michelle H. ; Southall, Hugh L.
Author_Institution :
Massachusetts Tech. Lab. Inc., Belmont, MA, USA
fDate :
1/1/1997 12:00:00 AM
Abstract :
The steering properties of a circular patch antenna array fabricated on a yttrium-iron-garnet substrate containing 6×6 elements have been calculated. The formulation assumes the interaction between patch elements can be neglected. Also, the Voigt permeability is used as the effective permeability of the substrate. As such, the steering rate of the radiation beam at 12 GHz is found to be 1.67°/Oe at the broad side direction. Hexagonal ferrites are suggested to avoid permanent external magnetic bias
Keywords :
antenna phased arrays; antenna radiation patterns; ferrite devices; garnets; magnetic permeability; microwave antenna arrays; yttrium compounds; 12 GHz; Voigt permeability; YFe5O12; YIG; antenna phased array; broad side direction; circular patches; ferrite substrate; hexagonal ferrites; radiation beam; steering properties; Antenna arrays; Costs; Feeds; Ferrites; Frequency; Magnetic fields; Magnetic materials; Permeability; Phased arrays; Polarization;
Journal_Title :
Magnetics, IEEE Transactions on
