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Ditemukan 114293 dokumen yang sesuai dengan query
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Priyo Wibowo
"Transverse electromagetic cell (sel TEM) merupakan perangkat alternatif pengujian EMC (Electromagnetic Compatibility). Namun, frekuensi operasi maksimumnya sangat terbatas sedangkan pengujian EMC mensyaratkan pengujian dilakukan hingga frekuensi 1 GHz. Beberapa pengembangan sel TEM untuk meningkatkan frekuensi operasi malah memperkecil luas keseragaman medan sedangkan peningkatan luas keseragaman medan tidak dapat dilakukan hingga frekuensi tinggi. Coplanar waveguide dapat digunakan sebagai sumber medan yang seragam dan sangat berpotensi untuk digunakan dalam perancangan sel TEM dengan rentang frekuensi yang sangat lebar. Pada tesis ini dilakukan perancangan sel TEM sederhana dengan lempeng coplanar waveguide (CPW) untuk membangkitkan medan elektromagnetik seragam yang dapat beroprasi pada frekuensi 30 MHz - 1.GHz. Hasil simulasi menunjukan sel TEM dapat disusun dari dua buah lempeng CPW identik berukuran 510 mm x 750 mm dengan lebar hot-line s = 440 mm, gap w = 7,69 mm dengan jarak antara lempeng CPW sebesar h = 550 mm. Hasil pengukuran menujukan kesesuaian antara hasil pengukuran dengan simulasi. sel TEM menghasilkan uniform area 30 cm x 50.cm dan memenuhi ketentuan standar IEC 61000-4-20.

A transverse electromagnetic cell (TEM cell) is an alternative device for EMC (Electromagnetic Compatibility) test. The highest operating frequency of TEM cell is limited while EMC test requires testing performed up to 1 GHz. The TEM cell developments to increase the operating frequency has decrease the TEM cell field uniformity area while increasing field uniformity area cannot be done to higher frequency. Meanwhile, coplanar waveguide can be used to generate uniform field and potentially can be used to design a TEM Cells with very wide frequency range. In this thesis, a simple TEM cell was designed with coplanar waveguide plates (CPW) for generating uniform electromagnetic field at frequency 30 MHz - 1.GHz. The simulation results show that the TEM cell can be made by two identical CPW plates which has 510 mm x 750 mm in size, wide of hot-line s = 440 mm, gap w = 7.69 mm and the distance between the CPW plates h = 550 mm. The measurement results show in agreement with the simulastion. The TEM cell produces a uniform area of 30 cm x 50 cm which is in accordance with IEC 61000-4-20 standard.
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Depok: Fakultas Teknik Universitas Indonesia, 2014
T42285
UI - Tesis Membership  Universitas Indonesia Library
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Violette, J.L. Norman
"Buku yang berjudul "Electromagnetic compatibility handbook" ini ditulis oleh J. L. Norman Violette, Donald R. J. White, dan Michael F. Violette. Buku ini merupakan sebuah buku panduan mengenai elektromagnetik."
New York: Van Nostrand Reinhold, 1985
R 621.380436 VIO e
Buku Referensi  Universitas Indonesia Library
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"This book systematically explains the fundamentals of system-level electromagnetic compatibility and introduces the basic concept of system-level electromagnetic compatibility quantification design. The topics covered include the critical technologies in the top-down quantification design of electromagnetic compatibility, quantification design of system-level electromagnetic compatibility, evaluation methods and application examples, quality control and application examples of electromagnetic compatibility development process, and real-world engineering example analysis of electromagnetic compatibility.
The book proposes a top-down system-level electromagnetic compatibility quantification design method and is the first book to describe in detail how to quantitatively evaluate and predict system-level electromagnetic compatibility performance. It includes abundant engineering examples and experimental data demonstrating the usage and results of the top-down quantification design methods of system-level electromagnetic compatibility.
It enables readers to obtain a thorough understanding of the theory and methods of system-level electromagnetic compatibility quantification design as well as the methodologies for engineering practice."
Singapore: Springer Nature, 2019
e20509564
eBooks  Universitas Indonesia Library
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Goedbloed, Jasper J.
New York: Prentice-Hall, 1992
621.382 24 GOE e
Buku Teks  Universitas Indonesia Library
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Nefyodov, Eugene I.
"This textbook is intended for a course in electromagnetism for upper undergraduate and graduate students. The main concepts and laws of classical macroscopic electrodynamics and initial information about generalized laws of modern electromagnetics are discussed, explaining some paradoxes of the modern theory. The reader then gets acquainted with electrodynamics methods of field analysis on the basis of wave equation solution. Emission physics are considered using an example of the Huygens-Fresnel-Kirchhoff canonic principle. The representation about strict electrodynamics task statement on the base of Maxwell equations, boundary conditions, emission conditions and the condition on the edge is given. Different classes of approximate boundary conditions are presented, which essentially simplify understanding of process physics. The canonic Fresnel functions are given and their generalization on the case of anisotropic impedance. The free waves in closed waveguides and in strip-slotted and edge-dielectric transmission lines are described.
A large number of Mathcad programs for illustration of field patterns and its properties in different guiding structures are provided. The material is organized for self-study as well as classroom use."
Switzerland: Springer Cham, 2019
e20502456
eBooks  Universitas Indonesia Library
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Paul, Clayton R.
New York: John Wiley & Sons, 1992
621.381 2 PAU i
Buku Teks  Universitas Indonesia Library
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Kodali, V. Prasad
New York: IEEE-Press, 1996
621.382 24 KOD e
Buku Teks  Universitas Indonesia Library
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Muhammad Imam Sudrajat
"ABSTRAK
Faktor keamanan dan kinerja merupakan aspek fundamental pada peralatan medis.
Untuk menjamin kualitas dan keamanan pada peralatan Elektroensefalograf
(EEG), salah satunya ialah harus memenuhi syarat kompatibilitas terhadap
elektromagnetik (EMC) yang secara khusus diatur pada standar IEC 60601-1-
2:2014. Pada penelitian ini, telah dilakukan analisis dan pengembangan aspek
kompatibilitas elektromagnetik terhadap prototipe EEG berbasis Arduino Uno
mengacu standar IEC 60601-1-2:2014. Hasil dari penelitian ini menunjukkan
emisi radiasi elektromagnetik pada prototipe EEG dapat diturunkan dengan
modifikasi PCB, menambah ferrite bead pada kabel USB dan menambah shield.
Dengan menggabungkan ketiga metode tersebut, level emisi radiasi pada rentang
frekuensi 30MHz sampai 1GHz dapat diturunkan, sehingga berada di bawah limit
standar. Penurunan terbesar level emisi radiasi elektromagnetik terjadi pada
frekuensi 35.9MHz yaitu sebesar 27.7 dB. Pengembangan dengan
menggabungkan ketiga metode tersebut tidak berdampak pada level emisi melalui
konduksi, sehingga masih tetap berada dibawah limit standar. Prototipe EEG yang
telah diberi penambahan varistor dan ESD (Electrostatic Discharge) suppressor
juga terbukti mampu bertahan dari kerusakan permanen saat pengujian imunitas
dengan level surge sampai 1kV dan pengujian ESD secara kontak sampai 8kV.

ABSTRACT
Safety and performance of medical devices are fundamental aspects to be
concerned. To ensure the quality and safety of electroencephalograph ( EEG ),
one of the requirement is electromagnetic compatibility (EMC) which is
specifically regulated by IEC 60601-1-2: 2014 standard. EMC aspect of Arduino
Uno based EEG prototype was analyzed and developed refer to IEC 60601-1-
2:2014. The results of this study indicated emission of electromagnetic radiation
on EEG prototype can be derived by PCB modification, added ferrite beads on the
USB cable and added a shield. By combining these three methods, radiated
emission level at frequency range 30MHz until 1GHz was reduced until below the
standard limit. The largest reduction of electromagnetic radiated emission level
occured at frequency 35.9MHz with value 27.7 dB. Combination of these three
methods on a EEG prototype did not impact on the level of emissions through
conduction, and it remained below the standard limit. EEG prototype that has
been fitted with varistor and ESD (Electrostatic Discharge ) suppressor also
proved to be able to withstand from permanent damage at the level surge
immunity testing up to 1kV , and contact ESD testing up to 8kV."
2016
T46376
UI - Tesis Membership  Universitas Indonesia Library
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Chatterson, Paul A.
Chichester: Wiley, 1992
621.382 2 CHA e
Buku Teks  Universitas Indonesia Library
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Tong, Xingcun Colin
Boca Raton: CRC Press, Taylor & Francis Group, 2009
621.382 24 TON a
Buku Teks  Universitas Indonesia Library
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