Karakteristik Ultrawideband 1-6 GHz pada Tubuh Manusia secara NLOS dengan Polarisasi Antena Berbeda

Zein, Rifqi Nur Muhammad (2024) Karakteristik Ultrawideband 1-6 GHz pada Tubuh Manusia secara NLOS dengan Polarisasi Antena Berbeda. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Ultra Wideband (UWB) merupakan salah satu sistem yang memiliki bandwidth yang sangat lebar. Dalam pengaplikasian pada tubuh, seringkali kanal UWB bersifat Non-line-of-Sight (NLoS) dimana hal itu berarti sinyalnya ke penerima terhalang oleh benda lain. Hal ini dapat menyebabkan penurunan kualitas sinyal dari UWB seperti menigkatnya loss, delay spread, dan kepadatan energinya. Dalam hal ini, polarisasi antenna ya dapat membantu mengurangi efek Non-line-of-Sight (NLoS) yang terjadi pada aplikasi UWB. Hal ini dikarenakan adanya interaksi antara gelombang elektromagnetik dengan medan listrik dan medan magnet. Selain itu, lingkungan juga sangat mempengaruhi parameter-parameter yang diukur karena ada batas serapan dan batas pantul pada tubuh terhadap lingkungannya sekitarnya sehingga akan dilakukan percobaan di lingkungan yang tertutup. Penelitian ini akan dilakukan pengukuran dimana akan diperoleh data terkait path loss, delay spread respon impuls, serta scattering parameter. Kemudian, akan dibuat dalam bentuk grafik Cumulative Distribution Function (CDF) dengan menggunakan matlab. Dari hasil yang didapatkan magnitude ditambah dengan loss kabel dimana di berbagai lingkungan yang lebih kecil dan luas. Ruangan B306a memperkenalkan lebih banyak kompleksitas dalam transmisi sinyal dibandingkan dengan Ruangan B306. Hal ini terlihat dari nilai magnitudo yang lebih rendah, respon impuls yang lebih kompleks, dan delay spread yang lebih besar di lingkungan tertutup. Variasi dalam performa transmisi juga dipengaruhi oleh jenis polarisasi antena, dengan masing-masing polarisasi menunjukkan respons yang berbeda terhadap kondisi lingkungan dan ruangan.
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Ultra-Wideband (UWB) is a system known for its extremely wide bandwidth. When applied to the human body, the UWB channel often exhibits Non-Line-of-Sight (NLOS) characteristics, meaning its signal path to the receiver is obstructed by surrounding objects. This can result in a degradation of UWB signal quality, leading to increased loss, delay spread, and energy density. In such scenarios, the polarization of the antenna can help mitigate the Non-Line-of-Sight (NLOS) effects in UWB applications. This is due to the interaction between electromagnetic waves and the electric and magnetic fields. Additionally, the environment significantly influences the measured parameters, as there are absorption and reflection boundaries on the body concerning its surroundings. Therefore, experiments will be conducted in closed environments. The research involves simulations to gather data on path loss, delay spread, energy density, impulse response, and scattering parameters. Subsequently, this data will be presented in the form of Cumulative Distribution Function (CDF) graphs using Matlab. From the results obtained, the amount is increased by cable loss which is in various smaller and wider environments. Room B306a introduces more complexity in signal transmission compared to Room B306. This can be seen from the lower magnitude values, more complex impulse responses, and larger delay spreads in closed environments. Variations in transmission performance are also influenced by the type of antenna polarization, with each polarization showing a different response to environmental and room conditions.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Antenna, Characteristic Channel, Polarization, Radiation Pattern, UltraWideband, Antena, Karakteristik Kanal, Polarisasi, Pola Radiasi, UltraWideband
Subjects:	T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK5102.9 Signal processing. T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK7871.6 Antennas (Electronics) T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK5101 Telecommunication
Divisions:	Faculty of Intelligent Electrical and Informatics Technology (ELECTICS) > Electrical Engineering > 20201-(S1) Undergraduate Thesis
Depositing User:	Rifqi Nur Muhammad Zein
Date Deposited:	15 Aug 2024 01:54
Last Modified:	15 Aug 2024 01:54
URI:	http://repository.its.ac.id/id/eprint/115401

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