Design And Simulation Of Broadband Unidirectional Cpw-Fed Rectangular Slot Antennas

A broadband unidirectional coplanar waveguide (CPW) fed rectangular slot millimeter wave antenna based on Micro-Electro-Mechanical Systems (MEMS) non-silicon micro-fabrication technology is discussed. A wide impedance bandwidth of 75% (S-11 <-10dB) was obtained. By adding special wave guiding structure and reflecting structure, the antenna achieves unidirectional radiation, and the max gain of the antenna increases from 3.8dB to 6.8dB. Ansoft HFSS and CST Microwave Studio, two high frequency structure simulation softwares are used to simulate and analyze the antenna performances.