Our goal is to develop THz module on chip to visualize bone grinding at the early stage so that arthritis can be visualized and treated early.A critical component of such module is antenna.A compact 4 by 4 beamforming antenna array for biomedical application is presented in this paper.We are proposing a novel antenna which is in the form of a circular ribbon shape with a gold patch.Gold material for the patch is used to enhance its conductivity and to cut down backward radiation.Differential port pin used to increase the bandwidth.Au-posts are finally used for output connection.The proposed antenna operates over the frequency band from 201 GHz to more than 228 GHz.Directivity and gain of the proposed antenna are 13 dB and 7 dB respectively.This makes it applicable for imaging systems because of the frequency band for biomedical imaging.Index Terms-Beamforming antenna,antenna array,Advanced design system(ADS),Biomedical imaging.
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