Pengaruh Teknik Modulasi Terhadap Penerimaan Daya Pada Sistem Transfer Daya Nirkabel Frekuensi Radio Berbasis Software-defined Radio

Natha, Tobi Wibialma (2022) Pengaruh Teknik Modulasi Terhadap Penerimaan Daya Pada Sistem Transfer Daya Nirkabel Frekuensi Radio Berbasis Software-defined Radio. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Wireless Power Transfer (WPT) merupakan teknik pengisian daya tanpa kabel sebagai hubungan fisik. Terdapat penelitian yang sedang berlangsung pada Proyek Kolaborasi Pusat ITS berjudul “Wahana Nirawak: Aspek Keamanan Data, Pengisian Enerji, dan Desain Antena 26 GHz” mengenai sistem WPT berupa pesawat nirawak (drone) yang mengisi daya node-node yang sulit dijangkau pada JSN. Gelombang RF ditransmisikan kemudian disearahkan menjadi gelombang DC pada sisi penerima, sehingga dinamakan RF WPT.Diduga PAPR sinyal memengaruhi efisiensi penerimaan daya pada sistem WPT, terutama pada transmisi sinyal multitone. Sehingga Tugas Akhir ini meneliti mengenai pengaruh teknik modulasi yang digunakan terhadap kinerja penerimaan daya pada sistem WPT, dengan sinyal pemodulasi tone tunggal dan jamak. Dengan memodelkan pemancar menggunakan SDR HackRF One dan penerima menggunakan rectenna, teknik modulasi divariasikan melalui pemrograman pada software GNU Radio. Modulasi yang dikaji meliputi: AM, FM, 2-tone, 4-tone, dan tanpa modulasi, dengan frekuensi pembawa 2.45 GHz. Metode penelitian adalah eksperimen, memisahkan pemancar dan penerima pada jarak tertentu dengan komunikasi line-of-sight, kemudian diambil data berupa Daya Terima RF, Output Tegangan DC, dan Efisiensi Konversi Daya RF-to-DC. Apabila dievaluasi dari segi efisiensi konversi daya, teknik modulasi 4-tone merupakan yang paling efisien dengan nRF-DC mencapai 80.34% pada jarak 40 cm. Pada 60 hingga 120 cm, nilai efisiensi dari kelima teknik modulasi mengalami penurunan yang signifikan menjadi 1~10%. Semakin tinggi PAPR maka efisiensi konversi juga naik, dengan membandingkan PAPR dari modulasi AM 1-tone, 2-tone, dan 4-tone. ================================================================================================ Wireless Power Transfer (WPT) is a means of power transfer without wires as a physical link. Research is underway on ITS’ Center Collaboration Project, entitled “Unmanned Vehicle: Aspects of Data Security, Energy Charging, and 26 GHz Antenna Design”, one of which studies about WPT system in the form of drone that charges difficult-to- reach nodes’ power in WSN. RF waves are transmitted, then rectified into DC waves on the receiver end, hence abbreviated RF WPT. Signal’s PAPR is suspected to affects power reception efficiency in WPT system, mainly in multitone signals transmission. Therefore, this Final Project examines the impact of modulation techniques applied, with single and multitone modulator signal, toward power reception performance of a WPT system. By modeling transmitter using HackRF One SDR and receiver using rectenna, the modulation technique is varied through programming in GNU Radio software. Studied modulation covers: AM, FM, 2-tone, 4-tone, no modulation, with carrier frequency of 2.45 GHz. Research method used is experiment, separating transmitter and receiver at a certain distance with line-of-sight communication, then data is taken as follows: RF Input Power, DC Output Voltage, and RF-to- DC Power Conversion Efficiency. Evaluated in terms of power conversion efficiency, 4-tone modulation technique outperforms the others with nRF-DC reaching 80.34% at 40 cm distance. At 60 to 120 cm, efficiency values of the five modulation techniques significantly decreases to 1~10%. Comparing the PAPR of 1-tone, 2-tone, and 4-tone AM modulation, the conversion efficiency increases the higher the PAPR.

Item Type: Thesis (Undergraduate)
Uncontrolled Keywords: WPT, Teknik Modulasi, SDR, GNU Radio, RF Power Transfer, Modulation Technique
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK201 Electric Power Transmission
T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK5102.9 Signal processing.
T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK6564 Radio transmitter-receivers
T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK5101 Telecommunication
T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK5102.5 Modulation (Electronics), Demodulation (Electronics)
Divisions: Faculty of Intelligent Electrical and Informatics Technology (ELECTICS) > Electrical Engineering > 20201-(S1) Undergraduate Thesis
Depositing User: Tobi Wibialma Natha
Date Deposited: 03 Feb 2022 03:37
Last Modified: 03 Feb 2022 03:37
URI: https://repository.its.ac.id/id/eprint/92673

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