NOVEL STACKED ARRAY ANTENNA FOR THZ APPLICATION BAND

Nowadays, wireless space communication demands high data rate for communication. The improvement in the bandwidth gives high data rate. THz spectrum is the frequency range of 300GHz to 30THz, in this spectrum the problems of spectrum scarcity and limited bandwidth can be solved. As the Terahertz waves are atmosphere free, hence are good for space communication. With this high gain terahertz antenna it is possible to reduce free space path loss. This proposed work presents a novel, stacked 24-elements array of antenna at 515GHz for Terahertz application band. The antenna is designed on a thin substrate having lower substrate height is 0.2mm with slotted rectangular antenna having conical vias from this layer to ground. While the stacked antenna having substrate height of 0.2mm above the lower layer; with dielectric constant of Ɛr = 3.8. This Terahertz antenna design provides a 11.5 dBi gain and 12.6 dBi directivity . The proposed antenna consists of 24 elements, where these are connected 4 X 6 excites with coplanar waveguide (CPW) feed. This feeding technique gives a good impedance matching at inputs of the radiating elements. The antenna presents a wide bandwidth of 34 GHz and satisfies all performance parameters. It has return loss of -22.5 dB at the resonance frequency of 515GHz (S11< -10dB). The antenna is low cost, less weight and low profile with radiation efficiency of 100%. The antenna is designed, analyzed and optimized on IE3D Zeland software version 15.30