Simulation Design and Transient Analysis of Spark gap Integrated Dipole Antenna for Optimum Performance

Abstract

Today s society cannot be visualized without the dependency of humanity on technology. Every walk of life in human survival today is linked to computers and newlineelectronic systems, which undoubtedly improve the quality of life. This comfort newlinecomes with a restriction because of the vulnerability of the electronic system to newlineanti-electronic threats. Not orienting towards offensive, it is indeed the need of the newlinehour to protect our systems by characterizing their susceptibility levels. Many researchers formulate the threat scenarios, and international committees constituted newlinefor this purpose. High power electromagnetic (HPEM) systems that could generate newlineand radiate few gigawatts were developed worldwide. newlineLikewise, an antenna also plays a crucial role in the HPEM systems in any transmitting system. However, there are more challenges in designing and developing antennas for HPEM systems. Among the categories of antennas developed for newlinethis purpose, wideband/Ultra-wideband (WB/UWB) antennas that are capable of newlinetransmitting transient impulse-like high voltage signals are potential contenders. newlineA well-designed WB/UWB antenna should have high fidelity in transmitting the newlinetransient signal without altering its characteristic parameters. This thesis focuses newlineon the design, analysis, development, and measurements of a wideband antenna, newlinespark gap integrated dipole (SGID) antenna. The main focus is placed on transient newlineanalysis, its construction, and performance evaluation. newlineSpark gap integrated dipole (SGID) are simple in construction, compact, and newlinereliable transient wideband antennas for high power applications. They offer the newlinepromise of utilizing them to very high powers without any complications and can newlineeasily be fabricated with low-cost materials. This makes them a viable alternative newlineto complex horn-based antennas that are generally used in high-power scenarios. newlineDespite the aforementioned advantages, the bandwidth offered by these antennas newlineis limited to mesoband, whereas Transverse Electromagnetic (TEM) based horn antennas can scale up