Effect of Progressive Phase Excitation on Tunability of Rectangular Patch Array Antenna Printed on Synthesized LiTiZn Ferrite

Abstract

In the present communication effects of progressive phase excitation on the radiation characteristics of microstrip antenna array imprinted on synthesized LiTiZn ferrite substrate in external magnetic field are analyzed. Usually ferrite based microstrip antennas are preferred for the scanning and tracking purpose due to its non-reciprocal behavior under biased condition. The scanning behavior of radiation beam can be controlled by varying magnetic field without any mechanical exercise, moreover this scanning effect enhanced considerably by changing the phase excitation of feeding current of antenna array. Phase excitation technique with magnetic biasing improve the effective radiation which is generally slow down due to high biasing field.