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- W2186997411 abstract "Two crossed bowtie antenna with annular ring is a suitable candidate for Ground Penetrating Radars. Here annular ring acts as capacitive load, overcome the hurdle of resistive load, as proposed earlier.Impedance match is a great concern of this design. Here, with the help of Genetic Programming, we have proposed a model to get proper impedance match at antenna resonant frequency for particular values of substrate permittivity and spacing between antenna arm and annular ring. I. Introduction Continuous and sustainable growth of technical research and innovative design in Ultra Wide-Band (UWB) radio has presented a myriad of exciting opportunities and challenges for engineers in the communications arena including antenna design. From the last couple of decades one of the most emerging research arenas under UWB becomes impulse radar, namely Ground Penetrating Radar (GPR) design to detect and locate buriedand sub-surfaceobjects.GPR finds applications in sectors like military (detection of landmines, unexploded ordnance, tunnel etc.), archaeology (inspection of buried archaeological objects), environment (locating geological structures, water levels, trenches and contaminated fluids), civil engineering (identification of buried pipes, imperfections and reinforcing rods within structural concrete, and laminations and voids in roads and bridges) and searching buried victims (avalanches, earthquakes). GPR is based on transmission and reception of electromagnetic (EM) waves. The electromagnetic wave is radiated from a transmitting antenna, travels through the material medium at a velocity which is determined primarily by the permittivity of the material as follows: A. Velocity= (Velocity of Wave in Air) / (Relative Permittivity of Material) 1/2 The wave spreads out and travels downward until it hits an object that has different electrical properties from the surrounding medium, is scattered from the object, and is detected by a receiving antenna. The depth to the top of the object is computed using the following equation: B. Depth= (two-way travel time) / 2 × (velocity of the" @default.
- W2186997411 created "2016-06-24" @default.
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- W2186997411 date "2015-01-01" @default.
- W2186997411 modified "2023-09-27" @default.
- W2186997411 title "Optimal Design of Two-crossed Bowtie Antenna With Genetic Programming" @default.
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