iosr-JECE   Volume-17 ~ Issue-5 ~ Sep. - Oct. 2022

Abstract: In this research, an inset-fed rectangular microstrip antenna is designed and optimized in order to use with 5G communication systems. The proposed antenna is designed and optimized at 28 GHz centered frequency. The optimaldimensions are 3.285 mm and 4.232 mm for patch length and width respectively with microstrip line width of 0.4481mmand length of 4.037 mm. inset distance is varying in order to control input impedance. The proposed antenna resonates at 27.9832 GHz with return loss of -18.85587 dB and bandwidth of 1.46395 GHz.

Key Word: Microstrip Antenna, Patch Antenna, Inset-Fed, Optimization, Millimeter, Return Loss, Bandwidth, 5G.

[1]. Omar Darboe, Dominic Bernard Onyango Koditi and Franklin Manene, "A 28 GHz Rectangular Microstrip Patch Antenna for 5G Applications", 0974-3154, volume 12, number 6 (2019), pp. 854-857
[2]. Youssef El Gholb, Mohamed El Bakkali, AhmedMounsef, Ikram Tabakh, Najiba El Amrani El Idrissi, "A 9-shaped Antenna for 5G Applications", 978-1-5386-2123-3/17/$31.00© 2017 IEEE.
[3]. IlhemGharbi, Rim Barrak, Mourad Menif, HediRagad, "Design of patch array antennas for future 5G applications", 978-1-5386-1084-8/17//$31.00© 2017 IEEE.
[4]. Yassine JANDI, Fatima GHARNATI, Oulad said ahmed, "Design of a compact Dual bands patch antenna for 5G Applications", 978-1-5090-6681-0/17//$31.00© 2017 IEEE.
[5]. David Alvarez Outerelo, Ana Vazquez Alejos, Manuel Garcia Sanchez, Maria Vera Isasa, "Microstrip Antenna for 5G Broadband Communications: Overview of Design Issues", 978-1-4799-7815-1/15/$31.00© 2015 IEEE..

Abstract: Plant disease identification by visual way is increasingly difficult and simultaneously less accurate. However in the event that disease detection technique is used, it will take less time and processing power and proves to be progressively exact. Some broad maladies in plants appear dark coloured, yellow spots, and some are infectious, viral and bacterial diseases. Image processing is being used for estimation of infected area. Image segmentation is the process of collecting images into different parts. Now a day there are various strategies used for preforming image segmentation, stretching out from the fundamental threshholding procedure to forefront concealing picture division systems. A computer does not any special technique for intelligent objects recognition, so a great......

Key Word: Multi Leaf Disease Detection, Pre-processing, Classification algorithms, Feature Extraction, Convolutional Neural Network (CNN) etc

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Abstract: In this article a circularly polarized circular microstrip patch antenna is proposed for 28 GHz, 5 G applications. The proposed antenna is designed on RT duroid of relative dielectric constant of 2.2 and height 0.508 mm. Two orthogonal feed lines are used to excite the circular patch, to generate the two orthogonal fields. The various parameters such as return loss, radiation pattern and axial ratio etcof the purposed antenna has been investigated.

Key Word: 5G, Microstrip Patch Antenna, Circular Polarization.

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