Abstract
In this work, the impact of substrate type and design dimensions on bow-tie microstrip antenna performance and bandwidth improvement is presented both numerically and experimentally at 4–8 GHz. The finite integration technique (FIT)-based high-frequency electromagnetic solver, CST Microwave Studio, was used for the simulation analysis. For this purpose, four bow-tie microstrip antennas were designed, fabricated, and measured upon using different materials and substrate thicknesses. Precise results were achieved and the simulated and experimental results showed a good agreement. The performance of each antenna was analyzed and the impact of changing material permittivity, antenna dimensions and substrate thicknesses on antenna performance were investigated and discussed. The measured results indicated that the slot bow-tie antenna, which is one of the novel aspects of this study, is well matched and a 2-GHz bandwidth [5–7 GHz] is obtained, which is about 50% bandwidth in comparison with the wideband applications [4–8 GHz]. The proposed structure is useful in ultra-wideband (UWB) applications. This study provides guidance in selecting material types and thicknesses for microstrip antennas based on desired applications.
Highlights
Microstrip antennas with a wide operation bandwidth have received much attention due to their employment in different applications with easy tuning options [1,2,3,4,5]
The CST Microwave Studio program is used as a main program to design and simulate the antennas
Small sector triangular shapes,shapes, the wideband bow-tie bow-tie antenna antenna is designed and simulated. This smallThis sector plays an plays an important role in increasing bandwidth because the current is strengthened around the important role in increasing bandwidth because the current is strengthened around the stub, which acts stub,improving which actsthe upon improving the electric field distribution
Summary
Microstrip antennas with a wide operation bandwidth have received much attention due to their employment in different applications with easy tuning options [1,2,3,4,5]. Progress in handheld devices requires these devices to be thinner to support small-sized appliances with improved performance [6,7,8]. In this way, antennas with different shapes have been studied to achieve miniaturization and bandwidth enhancement, such as circle [9], ellipse [10], triangle [11], fractal [12], U-shaped [13], etc. Bow-tie antenna, which is a type of microstrip antenna, has been used in different applications. A ground penetrating radar (GPR) was recently designed by Karamzadeh et al in 2016 [17], in which a bow-tie antenna was utilized aiming at improving its performance.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
