Graphene based nano patch antenna using photonic band gap insertion into substrate for applications at THz band

Abstract

In this work, we present a numerical investigation of the properties of Graphene based Nano Patch Antenna (GNPA) with triangular periodic arrangements of Photonic Band Gap (PBG) insertion into substrate. In the proposed design, we studied the effect on the radiation characteristics, such as return loss, bandwidth, gain, directivity, voltage standing wave ratio (VSWR), and the radiation pattern using the Finite Integration Method (FIM). We analyzed three con gurations of cylindrical air holes with different PBG insertion heights into silicon dioxide (SiO 2 ) substrate, namely h1, h2 and h3, and also reference antennas.The best results obtained are S 11 =-31.5, 2.038 dB gain and 0.4 THz bandwidth for antenna h3. The investigated GNPA-PBG resonates around 1.5THz, enabling the application at THz band.

Design of a High-Gain and Tri-Band Terahertz Microstrip Antenna Using a Polyimide Rectangular Dielectric Column Photonic Band Gap Substrate

“…Previous studies have shown that the air-hole PBG substrate is widely employed in the design of a single-frequency THz microstrip antenna to reduce the return loss and improve the gain [24][25][26][27]. Ullah et al designed a rectangular split ring air-hole PBG antenna with return loss reduced from −31.48 dB to −34.9 dB and gain increased from 6.86 dB to 6.884 dB at 0.696 THz compared to the homogeneous substrate THz microstrip antenna (H antenna) [28].…”