Full-wave analysis of antenna on the MMIC using modified ADI-FDTD method

In order to design a small antenna on the gallium arsenide monolithic microwave integrated circuit (MMIC), An H-shaped patch is designed. Initial experimental and theoretical characterization of the proposed structure has been carried out. It has been shown that the size of proposed patch antenna can be reduced to as low as one tenth of that of a half wavelength patch resonant at 6 GHz, saving significant substrate space. Ground plane truncation effects, which are important for MMIC applications, have been examined. Resonance frequency, radiation patterns and gain have been simulated by using the modified alternating-direction implicit finite-difference timedomain (ADI-FDTD) method.