SIW cavity-backed dual inverted L slot antenna array for Ku band applications

Abstract

A novel concept of SIW cavity-backed dual inverted edge curved L slots antenna array with the defective ground plane is proposed in this paper. A linearly placed six-element inverted dual L slots array antenna is designed separated by a distance of 0.55λ g to achieve high gain. Each pair of slots is separated by a column of the vias to form sub-cavities and those are fed individually. Defective ground structure (DGS) is introduced at the ground plane to manage the propagation of wave to the last slots in the array. The slots are enclosed by a SIW cavity of height 0.24λ g in a single substrate. A measured peak gain of 8 dBi is achieved at 14.29 GHz. The antenna shows a front-to-back ratio of 24.9 dB. The design is also compared with various aspects to show the advantages of each element introduced in the design. The validity of the design is proved by the good agreement between the simulated and measured results. This novel design can be used to achieve the performance requirement of a satellite antenna working in Ku band.

A highly directive array of nature‐inspired based patch antennas

“…A concave L‐shaped flap‐oriented coplanar antenna for multi‐band applications is proposed by Bag et al 27 Substrate integrated waveguide (SIW) based hexagonal‐shaped antenna is reported by Liu et al 28 A high‐gain spiral‐shaped printed antenna has been proposed for direct broadcast satellite applications by Kola et al 29 An open‐ended SIW‐based U‐shaped antenna for Ku‐band applications is proposed by Ameen et al 30 The wireless application based high‐gain printed antenna is reported by Kola et al 31 Wang et al 32 claimed that the developed U‐slot inside the radiator helps to enhance the parametric results in terms of directivity and return‐loss bandwidth. A four‐element antenna array could improve parametric results as reported in several literature 33–44 …”

“…A four-element antenna array could improve parametric results as reported in several literature. [33][34][35][36][37][38][39][40][41][42][43][44] A printed antenna 45 and its array with a natureinspired design that gives enormous gain and shallow x-pol. levels throughout its main beam's path are described in this paper by the authors.…”

Customizable Substrate Integrated Waveguide Based Dual Pole Band Pass Filter for X Band Application

“…Half-mode SIW (HMSIW) and Folded half-mode SIW (FHMSIW) designs have significantly reduced the physical footprint of various RF components while maintaining excellent performance. They are widely used in power dividers, filters, and antennas, utilizing complex techniques like quartermode, half-mode, and folding SIW cavities [5,[6][7][8][9][10][11][12][13]. Further, it is especially significant to trace the progress of fixed/tunable filters.…”