New Ferroelectric Phase Shifters In Phased Array Applications

The theoretically analyses of some ferroelectric phase shifters have been carried out in this thesis.Based on the analysis of the current CPW ferroelectric phase shifter, three novel ferroelectric phase shifter are proposed, including microstrip branch, slot line and SIRW types. The HFSS software and FDTD methods are used to analyze the characteristics of the single-layer and double-layer ferrite phase shifters of microstrip branch and SIRW structures. In addition, the construction and analysis of one-dimension ferroelectric phased array have been investigated, demonstrating the validity of ferroelectric phase shifter design.In this work, the patch antenna and the unequal power divider were designed. The measured results of the fabricated power divider have shown good agreement with the simulation data.Two one-dimension ferroelectric phased arrays have been proposed. The simulation results have shown that the radiation direction can be controlled by the biasing voltage, demonstrating the scanning effect of the phased array.