Ditemukan 18 dokumen yang sesuai dengan query
Boca Raton: CRC Press, [date of publication not identified]
R 621.3845 MOB
Buku Referensi Universitas Indonesia Library
Aditya Rizki Dwi Putra
"Teknologi implan medis pada saat ini telah menjadi bagian penting dalam suatu metode monitoring kondisi tubuh dari suatu makhluk hidup. Dalam sistem teknologi implan medis yang dijalankan secara nirkabel,diperlukan sistem Wireless Power Transfer. Sistem Pada sistem WPT terdapat 2 bagian penting, yaitu transmitter dan reciever. Pada bagian transmitter memiliki peran penting untuk proses amplifikasi daya, dibagian transmitter yang memiliki peran tersebut adalah Power Amplifier (PA). Topologi PA yang digunakan adalah Class-J yang dikenal memiliki liniearity yang baik tanpa mengorbankan efisiensi yang dimiliki, lalu terdapat komponen MOSFET yang bertugas sebagai switching tegangan-arus yang mengalir diterapkan dalam PA, spesifikasi MOSFET diharapkan memiliki kemampuan switching yang cepat dan memiliki efek parasitik dan resistansi yang rendah. PA akan dioperasikan dengan parameter frekuensi masukan sebesar 13,56 MHz sebagai spesifikasi dari penerapan untuk alat implant biomedis. Desain PA dilakukan dengan menggunakan perangkat lunak Advance System Design 2020 (ADS 2020) untuk mendapatkan efisiensi yang tinggi dengan parameter yang diharapkan. Hasil dari desain merupakan dengan target mendapatkan nilai PAE setinggi-tingginya dengan keluaran daya juga yang besar dalam hal ini Power Gain (dBm), dan hasil penguatan dalam decibel (dB) sebesar-besarya agar daya tidak hilang ketika ditransfer melalui coil menuju reciever. Melalui desain ini diperoleh output power atau P1dB sebesar 12,3 dBm sedangkan pada hasil simulasi P1dB sebesar 32 dBm..
Medical implant technology at this time has become an important part in a method of monitoring the body condition of a living being. In a medical implant technology system that runs wirelessly, a Wireless Power Transfer system is needed. System In the WPT system there are 2 important parts, namely transmitter and receiver. The transmitter section has an important role for the power amplification process, the transmitter section has a Power Amplifier (PA) role. The PA topology used is Class-J which is known to have good linearity without sacrificing its efficiency, then there is a MOSFET component that acts as a current-voltage switching applied in the PA, the MOSFET specification is expected to have fast switching capabilities and has parasitic and parasitic effects. low resistance. The PA will be operated with an input frequency parameter of 13.56 MHz as a specification of the application for biomedical implant devices. The PA design was carried out using the Advance System Design 2020 (ADS 2020) software to obtain high efficiency with the expected parameters. The result of the design is with the target of getting the highest PAE value with a large power output in this case Power Gain (dBm), and the maximum gain in decibels (dB) so that power is not lost when transferred through the coil to the receiver. Through this design, the output power or P1dB is 12.3 dBm, while the P1dB simulation results are 32 dBm."
Depok: Fakultas Teknik Universitas Indonesia, 2022
S-pdf
UI - Skripsi Membership Universitas Indonesia Library
Dandy Bagus Fauzan
Pada skripsi ini telah dipresentasikan desain rectifier untuk aplikasi wireless power transfer dengan topologi novel sebagai studi tahap awal. Topologi ini menggabungkan dan memodifikasi adaptive reconfigurable rectifierdengan active class E rectifier. Modifikasi yang dilakukan adalah mengganti switch NMOS pada active class E rectifiermenjadi PMOS pada topologi active class E rectifier dan mengubah jumlah dioda dan transistor yang digunakanpada topologi adaptive reconfigurable rectifier. Penggantian switch menjadi PMOS meningkatkan efisiensi dan menghasilkan output Wave form yang lebih baik. Penambahan jumlah diodadan jumlah transistor mencegah dioda mencapai breakdown voltage sehingga meningkatkan efisiensidan menjadikan rangkaian dapat mempertahankan dan meningkatkan efisiensi pada nilai inputyang lebih tinggi. Rangkaian usulan terdiri dari switch PMOS IRF9Z24 pada bagian active class E rectifier dan 3 dioda -3 transistor pada bagian adaptive reconfigurable rectifier memiliki efisiensi 76% pada input5 V dan 66% pada input10 V.
ABSTRACTThis thesis has presented a rectifier design for wireless power transfer applications with novel topology as an initial study. This topology combines and modifies the adaptive reconfigurable rectifier with the active class E rectifier. Modifications made were to replace the NMOS switch in the active class E rectifier to PMOS in the active class E rectifier topology and change the number of diodes and transistors used in the adaptive reconfigurable rectifier topology. Switching switches to PMOS increases efficiency and produces better Waveform output. Increasing the number of diodes and the number of transistors prevents the diodes from reaching the breakdown voltage, thereby increasing efficiency and allowing the circuit to maintain and increase efficiency at higher input values. The proposed circuit consists of the PMOS IRF9Z24 switch on the active class E rectifier and 3 diodes -3 transistors on the adaptive reconfigurable rectifier, which has an efficiency of 76% at 5 V."
2020
S-Pdf
UI - Skripsi Membership Universitas Indonesia Library
Toshihiro Kumagai
"Wireless power transmission is being investigated as a means to operate tiny medical devices such as the capsular endoscope, which is able to exist for a long period during diagnostic procedures within the body. In this paper, we examine the wireless power transmission to a capsular endoscope by electromagnetic waves to show its usability for medical applications. A modified helical antenna inside the endoscope is proposed as a power receiving antenna, operating at 915 MHz. By calculating a maximum received power in the stomach using such antenna, the results show that adequate power can be well received."
Depok: Faculty of Engineering, Universitas Indonesia, 2011
UI-IJTECH 2:1 (2011)
Artikel Jurnal Universitas Indonesia Library
Hekal, Sherif
"This book addresses the design challenges in near-field wireless power transfer (WPT) systems, such as high efficiency, compact size, and long transmission range. It presents new low-profile designs for the TX/RX structures using different shapes of defected ground structures (DGS) like (H, semi-H, and spiral-strips DGS). Most near-field WPT systems depend on magnetic resonant coupling (MRC) using 3-D wire loops or helical antennas, which are often bulky. This, in turn, poses technical difficulties in their application in small electronic devices and biomedical implants. To obtain compact structures, printed spiral coils (PSCs) have recently emerged as a candidate for low-profile WPT systems. However, most of the MRC WPT systems that use PSCs have limitations in the maximum achievable efficiency due to the feeding method. Inductive feeding constrains the geometric dimensions of the main transmitting (TX)/receiving (RX) resonators, which do not achieve the maximum achievable unloaded quality factor. This book will be of interest to researchers and professionals working on WPT-related problems."
Singapore: Springer Singapore, 2019
e20503034
eBooks Universitas Indonesia Library
