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Ditemukan 3 dokumen yang sesuai dengan query
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Yorashaki Martha Leza
"[ABSTRAK
Penggunaan energi alternatif untuk saat ini merupakan hal yang sangat
penting, dikarenakan makin menipisnya ketersediaan energi di alam. Energi alternatif
ini berasal dari potensial-potensial alam yang lain, yang dapat diperbaharui, dapat
dihasilkan dalam waktu yang singkat, atau juga berasal dari akibat adanya
penggunaan potensi alam yang lain sehingga menimbulkan potensi energi yang tidak
kita sadari kehadirannya disekitar kita adalah gelombang frekuensi radio atau yang
biasa dikenal dengan gelombang RF.
Pada Tesis ini dibuat rectifier antenna dengan menggunakan antena
mikrostrip patch lingkaran yang dapat digunakan untuk memanen energi RF pada
frekuensi resonan 2,445 GHz dan mengkonversikannya menjadi energi DC, yang
dapat digunakan untuk menghasilkan energi alternatif dari sumber daya yang belum
dimanfaatkan.
Dari hasil simulasi, parameter antena hasil perancangan diperoleh VSWR dan
return loss paling bagus sebesar 1,1664 dan -22,292 dB pada frekuensi 2,445 GHz,
bandwidth sebesar 85 MHz, gain 6,882 dB, dan pola radiasi directional. Kemudian,
dengan diberikan nilai Pin = 20 dBm, RL = 2 KΩ, dan jarak 100 cm rectenna mampu
menghasilkan nilai Vout = 3,3 Volt dengan nilai efisiensi maksimal sebesar 82%.
Dari hasil pengukuran, parameter antena hasil perancangan diperoleh VSWR
dan return loss paling bagus sebesar 1,12 dan -25,08 dB pada frekuensi resonan
2,445 GHz, bandwidth sebesar 72 MHz, dan gain 7,4 dB, dan pola radiasi
directional. Kemudian, dengan diberikan nilai Pin = 20 dBm, RL = 2 KΩ, dan jarak
100 cm rectenna mampu menghasilkan nilai Vout = 0,967 Volt dengan nilai efisiensi
maksimal sebesar 24%

ABSTRACT
Alternative energy becomes a very important issue due to the decrease energy
availability in the nature. For example, one potential energy that we didn?t realize its
presence around us is the Radio Frequency waves or commontly known as RF
waves. There is an effort to harvest the RF energy using rectenna technology.
In this tesis a rectifier antenna using circular microstrip patch antenna that
can be used to harvest RF energy at frequency 2.445 GHz is designed to convert the
RF into DC energy. This design can be used to produce alternative energy from
resources that have not been utilized.
From the simulation results, the results of the antenna parameters VSWR and
return loss is 1.1664 and -22.292 dB respectively at frequency 2.445 GHz, has a
bandwidth of 85 MHz, gain .,882 dB, and radiation pattern is directional. In addition,
with Pin = 20 dBm, RL = 2 KΩ, and distance 100 cm the rectenna is able to give a
value of Vout = 3.3 Volts with maximum efficiency is 82%.
From the measurement results, the results of the antenna parameters VSWR
and return loss is 1.12 and -25.08 dB respectively at frequency 2.445 GHz, has a
bandwidth of 72 MHz, gain 7.4 dB, and radiation pattern is directional. In addition,
with Pin = 20 dBm, RL = 2 KΩ, and distance 100 cm the rectenna is able to give a
value of Vout = 0.967 Volts with maximum efficiency is 24%.;Alternative energy becomes a very important issue due to the decrease energy
availability in the nature. For example, one potential energy that we didn?t realize its
presence around us is the Radio Frequency waves or commontly known as RF
waves. There is an effort to harvest the RF energy using rectenna technology.
In this tesis a rectifier antenna using circular microstrip patch antenna that
can be used to harvest RF energy at frequency 2.445 GHz is designed to convert the
RF into DC energy. This design can be used to produce alternative energy from
resources that have not been utilized.
From the simulation results, the results of the antenna parameters VSWR and
return loss is 1.1664 and -22.292 dB respectively at frequency 2.445 GHz, has a
bandwidth of 85 MHz, gain .,882 dB, and radiation pattern is directional. In addition,
with Pin = 20 dBm, RL = 2 KΩ, and distance 100 cm the rectenna is able to give a
value of Vout = 3.3 Volts with maximum efficiency is 82%.
From the measurement results, the results of the antenna parameters VSWR
and return loss is 1.12 and -25.08 dB respectively at frequency 2.445 GHz, has a
bandwidth of 72 MHz, gain 7.4 dB, and radiation pattern is directional. In addition,
with Pin = 20 dBm, RL = 2 KΩ, and distance 100 cm the rectenna is able to give a
value of Vout = 0.967 Volts with maximum efficiency is 24%.;Alternative energy becomes a very important issue due to the decrease energy
availability in the nature. For example, one potential energy that we didn?t realize its
presence around us is the Radio Frequency waves or commontly known as RF
waves. There is an effort to harvest the RF energy using rectenna technology.
In this tesis a rectifier antenna using circular microstrip patch antenna that
can be used to harvest RF energy at frequency 2.445 GHz is designed to convert the
RF into DC energy. This design can be used to produce alternative energy from
resources that have not been utilized.
From the simulation results, the results of the antenna parameters VSWR and
return loss is 1.1664 and -22.292 dB respectively at frequency 2.445 GHz, has a
bandwidth of 85 MHz, gain .,882 dB, and radiation pattern is directional. In addition,
with Pin = 20 dBm, RL = 2 KΩ, and distance 100 cm the rectenna is able to give a
value of Vout = 3.3 Volts with maximum efficiency is 82%.
From the measurement results, the results of the antenna parameters VSWR
and return loss is 1.12 and -25.08 dB respectively at frequency 2.445 GHz, has a
bandwidth of 72 MHz, gain 7.4 dB, and radiation pattern is directional. In addition,
with Pin = 20 dBm, RL = 2 KΩ, and distance 100 cm the rectenna is able to give a
value of Vout = 0.967 Volts with maximum efficiency is 24%., Alternative energy becomes a very important issue due to the decrease energy
availability in the nature. For example, one potential energy that we didn’t realize its
presence around us is the Radio Frequency waves or commontly known as RF
waves. There is an effort to harvest the RF energy using rectenna technology.
In this tesis a rectifier antenna using circular microstrip patch antenna that
can be used to harvest RF energy at frequency 2.445 GHz is designed to convert the
RF into DC energy. This design can be used to produce alternative energy from
resources that have not been utilized.
From the simulation results, the results of the antenna parameters VSWR and
return loss is 1.1664 and -22.292 dB respectively at frequency 2.445 GHz, has a
bandwidth of 85 MHz, gain .,882 dB, and radiation pattern is directional. In addition,
with Pin = 20 dBm, RL = 2 KΩ, and distance 100 cm the rectenna is able to give a
value of Vout = 3.3 Volts with maximum efficiency is 82%.
From the measurement results, the results of the antenna parameters VSWR
and return loss is 1.12 and -25.08 dB respectively at frequency 2.445 GHz, has a
bandwidth of 72 MHz, gain 7.4 dB, and radiation pattern is directional. In addition,
with Pin = 20 dBm, RL = 2 KΩ, and distance 100 cm the rectenna is able to give a
value of Vout = 0.967 Volts with maximum efficiency is 24%.]"
2015
T43380
UI - Tesis Membership  Universitas Indonesia Library
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Naufal Aulia Amanullah
"

Pertanian 4.0 yang merupakan masa depan teknologi pertanian melambangkan revolusi dalam sektor pertanian melalui integrasi teknologi canggih seperti Internet of Things (IoT), pertanian presisi, dan masih banyak lagi. Salah satu metode untuk melibatkan implementasi IoT generasi mendatang dalam pengisian energi proaktif dan jaringan nirkabel generasi mendatang adalah pemanenan energi Frekuensi Radio (RF). Ini adalah proses menyerap energi dari RF dan mengubahnya menjadi listrik. Sebagai alat pemanen energi, digunakan rectenna (penyearah + antena), yang terdiri dari antena penerima, matching network, penyearah RF ke DC, elemen penyimpanan, dan beban. Penelitian ini mengusulkan rangkaian penyearah RF ke DC dengan frekuensi operasi 920 MHz. Berdasarkan hasil simulasi, rangkaian yang dirancang memiliki tegangan keluaran sebesar 3.3 V, arus keluaran sebesar 2.2 mA, dan tingkat efisiensi sebesar 73.31%. Rangkaian ini dibuat dalam sebuah PCB dengan dimensi 4 x 2.4 cm


Agriculture 4.0, which is the future of agricultural technology, symbolizes a revolution in farming through the integration of advanced technologies such as the Internet of Things (IoT), precision agriculture, and many more. One method for involving the next-generation IoT implementation in proactive energy replenishment and next-generation wireless network is Radio Frequency (RF) energy harvesting. It is the process of absorbing energy from the RF and turns into electricity. As a tool for energy harvesting, a rectenna (rectifier + antenna) is used, which consists of a receiver antenna, matching network, RF-to-DC Rectifier, storage element, and a load. This research proposes an RF-to-DC Rectifier circuit with an operating frequency of 920 MHz. According to simulation results, the designed circuit has an output voltage of 3.3 V, an output current of 2.2 mA, and an efficiency level of 73.31%. This circuit was constructed in a PCB with a 4 x 2.4 cm dimension.

"
Depok: Fakultas Teknik Universitas Indonesia, 2023
S-pdf
UI - Skripsi Membership  Universitas Indonesia Library
cover
Jamalipour, Abbas
"This textbook introduces Wireless Powered Communication Networks (WPCNs) as a promising paradigm to overcome the energy bottleneck suffered by traditional wireless communication networks, as well as emerging Internet-of-Things networks. It selectively spans a coherent spectrum of fundamental aspects in WPCNs, such as wireless energy transfer (WEH) techniques, radio frequency (RF) energy harvesting receiver model, simultaneous wireless information and power transfer (SWIPT), as well as the rate-energy tradeoff arising from the joint transmission of information and energy using the same waveform. It covers network models for WPCNs, including the baseline and dual-hop WPCN models and a variety of related extensions. This book further examines the key factors including throughput, fairness, and security that must be taken into account for impeccable operation of WPCNs. The new IoT applications are targeted as a key element in those factors. It will also include exercises and examples throughout the book, as well as their PLS solutions.
This is the first textbook examining the current research to provide a unified view of wireless power transfer (WPT) and information transmission in WPCNs from a physical layer security (PLS) perspective. Focused on designing efficient secure transmission schemes, analyzing energy evolvement process, and evaluating secrecy outage performance under different channel state information (CSI), the results presented in this book shed light on how to best balance security and throughput with prudent use of harvested energy in WCNs. It also provides an overview of the WPCNs by introducing the background of WPT, followed by a summary of the research conducted in the field. The authors describe the physical-layer security (PLS) problem in WPCNs, including the causes and the impacts of the problem on the performance of WPCNs. The authors extend the discussions by introducing the applications of WPCNs in the IoT.
From the Internet of Things (IoT) point of view, this textbook reviews the opportunities and challenges for the lately-emerged WPCN to seamlessly integrate into the IoT ecosystem. It specifically addresses the maximization problem of uplink and downlink sum-throughout in a dual-hop WPCN, while taking fairness among WPCN users as a constraint. The results provided in this book reveal valuable insights into improving the design and deployment of future WPCNs in the upcoming IoT environment.
This textbook targets advanced-level students studying wireless communications and research engineers working in this field. Industry engineers in mobile device and network development business with an interest in WPCNs and IoT, as well as their PLS solutions, will also find this book useful."
Switzerland: Springer Cham, 2019
e20502860
eBooks  Universitas Indonesia Library