Research Information System
3rd International Conference on Advanced Technology & Sciences (ICAT’16), Konya, Turkey, 1 - 03 September 2016, pp.1-4, (Full Text)
— Microwave imaging technology has attracted many interests nowadays. This imaging system has been used in a variety of applications such as: non-destructive testing and evaluation, through-the-wall imaging, concealed weapon detection at security check points, structural health monitoring and medical imaging. Microwave imaging techniques have in recent decades experienced strong growth as a research topic in biomedical diagnostics. The basic idea of using microwave imaging system is to transmit electromagnetic waves from a transmitting antenna to the target material and receive the scattered waves at a receiving antenna. Thus, antenna choice plays an important role for the system. There is a need for compact sized, low cost and high efficiency antennas which can radiate ultra-wideband signal to transmit short pulses. Especially, ‘large bandwidth’ is vital to attain good time domain characteristics which is important for microwave imaging systems. In this study; we selected the circular patch antenna with a slot, due to their ease of fabrication, properties, small size and other advantages of microstrip technology. The schematic of the proposed antenna is presented and the dimensions are summarized in the paper. Ansoft HFSS software is used to design the proposed structure and optimize the radiation pattern and return loss. Simulation results such as directivity and return loss are given and discussed in the result part.