Comparative Performance Analysis of Microstrip Patch Antenna at 2.4 GHz and 18 GHz Using AN-SOF Professional

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The main aim of this paper is to simulate and analyze the performance of a rectangular patch antenna at frequencies 2.4 and 18 GHz. The simulation results show that the antenna has achieved a gain of 5 dB at 2.4 GHz and 6 dB at 18 GHz. These two frequencies are used in many wireless applications (2.4 GHz) and Ku-band applications (18 GHz). Here, the patch antenna is designed and simulated in AN-SOF PROFESSIONAL V3.5. The simulated results such as the gain, directivity, radiation pattern, and VSWR at both frequencies are compared and discussed in this paper.

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There is a huge increase in design of various wireless antennas for daily and commercial use. They are designed with various specifications. After deeply analyzing the comparisons, this paper is a result of comparison of two designs, namely micro strip patch antenna at 2.4GHZ using EZNEC and another micro strip patch antenna at 10.65GHZ using ADS. This comparison differentiates the results based on directive gain and other parameters.. Patch antenna is a wafer like directional antenna suitable for covering single floor, small office; small stores and other inter locations where access point cannot be placed centrally. Patch antenna produce the hemispherical coverage, spreading away from the mount point at a width of 30-180degree. Patch antenna also known as planar, slap planar or micro strip antennas. They are formed by overlying two metallic plates, one larger than the other, with dielectric sheet in the middle. This type of antenna is usually encased in black plastic or white plastic, not only to protect the antenna but also to make it easy to mount because they are flat , thin and light weight, patch antenna are often hung on walls of ceilings where they virtually cursive and blend easily into the background. The patch conducting in micro strip antenna may have planar or non-planar geometry.
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A bow-tie-shaped meander slot antenna fed by a microstrip line is proposed for 5 GHz applications. A conventional bow-tie slot antenna has a broad bandwidth; however, it is relatively large, and is thus inappropriate for miniaturized communication systems. Meanwhile, the meander slot antenna has small size, but its bandwidth is quite narrow. To realize miniaturized antennas having large bandwidth, we combine the bow-tie slot and meander slot geometries heuristically. Simulation results, confirmed by measured data, show that, for antennas designed to operate at 5.25 GHz, the proposed antenna is 65.5% smaller in size than the bow-tie antenna and the bandwidth is 3 times larger than that of the meander slot antenna.
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