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"This book comprises select proceedings of the International Conference on Advancement in Energy, Drives, and Control. It covers frontier topics in optimization and control. It covers applications of optimization processes in areas such as computer architecture, communication systems, system optimization, signal processing, fluid dynamics and process control. This book is of use to researchers, professionals, and students from across engineering disciplines."
Singapore: Springer Singapore, 2019
e20501325
eBooks  Universitas Indonesia Library
cover
"The book gathers high-quality research papers presented at the International Conference on Advanced Computing and Intelligent Engineering (ICACIE 2017). It includes technical sections describing progress in the fields of advanced computing and intelligent engineering, and is primarily intended for postgraduate students and researchers working in Computer Science and Engineering. However, researchers working in Electronics will also find the book useful, as it addresses hardware technologies and next-gen communication technologies."
Singapore: Springer Nature, 2019
e20509918
eBooks  Universitas Indonesia Library
cover
Ajeng Diah Ayulakswi
"[ABSTRAK
Perkembangan bisnis dan martketing yang sangat cepat mendorong naiknya
kebutuhan akan media telekomunikasi yang reliable, menarik, dan dinamis. Metode
dalam penyebaran informasi yang populer digunakan saat ini adalah penyiaran. Dimana
penggunaan spektrum frekuensi radio untuk keperluan penyiaran mengacu pada definisi
layanan penyiaran pada peraturan radio ITU. Layanan penyiaran adalah suatu servis
komunikasi radio dimana transmisinya ditujukan untuk penerimaan langsung oleh
masyarakat umum. Penyiaran televisi lebih sering digunakan sebagai sarana penyebaran
informasi dibandingkan dengan radio, karena dapat menyampaikan informasi secara jelas
dengan suara dan gambar. Semakin luas daerah jangkauan siaran suatu stasiun TV, maka
akan semakin banyak manfaat yang dapat dirasakan karena informasi dapat diterima
dengan baik oleh masyarakat.
Terdapat dua stasiun TV swasta di Bandung yang akan melakukan perluasan
wilayah ke kota yang berdekatan, yaitu di kota Garut dan Sukabumi dengan
menambahkan repeater baru serta menaikkan daya pancarnya. Kedua stasiun TV swasta
di Bandung tersebut menempati kanal 42 dan 44. Kedua stasiun TV tersebut merupakan
pemancar TV analog dan akan menggunakan kanal yang sama pada kota Garut dan
Sukabumi. Kedua stasiun TV analog ini memiliki kanal bersebelahan dengan stasiun TV
analog dan stasiun TV digital. Penambahan repeater baru dan menaikkan daya pancarnya
dapat memungkinkan terjadinya interferensi kanal bersebelahan. Untuk mengatasi hal
tersebut, maka dibuat sebuah aturan bahwa kuat medan penerimaan televisi siaran UHF
pada lokasi titik pengujian atau pengukuran setiap wilayah layanan dibatasi paling besar
70 dBμV/m untuk band V.
Skripsi ini bertujuan untuk menganalisis simulasi daya pancar untuk perluasan
wilayah siaran TVdari Bandung ke Garut dan Sukabumi, dengan menentukan pola radiasi
dan menaikan daya pancar repeater baru dengan batasan rasio proteksi agar daerah
jangkauan dan populasi di kota Garut dan Sukabumi terlayani. Hasil dari simulasi
diperoleh daya pancar pada kanal 42 dan 44 di kota Garut sebesar 42 dBW dengan
antena 4-1 dan daya pancar pada kanal 42 dan 44 di kota Sukabumi sebesar 38,3 dBW
dengan antena 730 372. Dengan penggunaan daya pada masing-masing pemancar
tersebut telah memenuhi wilayah cakupan yang terlayani pada kota Garut dan Sukabumi
dan pemancar yang digunakan tidak menginterferensi kanal yang bersebelahan. Namun
terdapat beberapa wilayah yang tidak tercakup sinyal pancar karena kontur wilayah yang
bergunung-gunung.
Kata kunci : interferensi
ABSTRACT
The rapid growth of various business and marketing leads to the needs of reliable,
attractive, and dynamic telecommunication media. Broadcasting is one of the popular
media which ever used in centuries. In the practical utilities, the broadcasting services use
a particular radio spectrum frequency with respect to the ITU-T standard. The
broadcasting services provide the essential informations which are directly served to the
public user. Broadcasting is rather used to publicize the information than the radio due to
its perceptibility through the sound and image repsentations. Consequently, the larger the
coverage area of the broadcasting services the more advantages can be obtained because
the informations can be delivered properly to the user.
In this final project, there are two private television provider where both are
located in Bandung. Theirs location are alongside cities which are Garut and Sukabumi.
In order to broaden their coverage area, they increased the number of repeater and the
level of power used by the transmitter respectively. Unfortunately, this method leads to an
adjacent channel interference. In order to withstand this effect, policies are made to limit
the usage of the bandwidth. For every service area the allocation is set to be at a
maximum of 70 dBμV/m for V band.
This final project is aimed to analyze the power used by the transmission to
broaden the coverage area of the television services from Bandung to Garut and
Sukabumi. The radiation patterns enhancement and the increase of transmitted power by
the new repeaters are used. As a result, it is proved that for Garut and Sukabumi the 42
dBW and 38,3 dBW are appropriate with the use of the 4-1 and 730-372 antennas
respectively in the 42nd and 44th channels. In the attained transmitted power, the adjacent
channel interference can be evaded. In case of the extending the coverage area, there are
still some particular areas which are delicate to overcome due to its geograhical contour
which are mainly mountains.;The rapid growth of various business and marketing leads to the needs of reliable,
attractive, and dynamic telecommunication media. Broadcasting is one of the popular
media which ever used in centuries. In the practical utilities, the broadcasting services use
a particular radio spectrum frequency with respect to the ITU-T standard. The
broadcasting services provide the essential informations which are directly served to the
public user. Broadcasting is rather used to publicize the information than the radio due to
its perceptibility through the sound and image repsentations. Consequently, the larger the
coverage area of the broadcasting services the more advantages can be obtained because
the informations can be delivered properly to the user.
In this final project, there are two private television provider where both are
located in Bandung. Theirs location are alongside cities which are Garut and Sukabumi.
In order to broaden their coverage area, they increased the number of repeater and the
level of power used by the transmitter respectively. Unfortunately, this method leads to an
adjacent channel interference. In order to withstand this effect, policies are made to limit
the usage of the bandwidth. For every service area the allocation is set to be at a
maximum of 70 dBμV/m for V band.
This final project is aimed to analyze the power used by the transmission to
broaden the coverage area of the television services from Bandung to Garut and
Sukabumi. The radiation patterns enhancement and the increase of transmitted power by
the new repeaters are used. As a result, it is proved that for Garut and Sukabumi the 42
dBW and 38,3 dBW are appropriate with the use of the 4-1 and 730-372 antennas
respectively in the 42nd and 44th channels. In the attained transmitted power, the adjacent
channel interference can be evaded. In case of the extending the coverage area, there are
still some particular areas which are delicate to overcome due to its geograhical contour
which are mainly mountains.;The rapid growth of various business and marketing leads to the needs of reliable,
attractive, and dynamic telecommunication media. Broadcasting is one of the popular
media which ever used in centuries. In the practical utilities, the broadcasting services use
a particular radio spectrum frequency with respect to the ITU-T standard. The
broadcasting services provide the essential informations which are directly served to the
public user. Broadcasting is rather used to publicize the information than the radio due to
its perceptibility through the sound and image repsentations. Consequently, the larger the
coverage area of the broadcasting services the more advantages can be obtained because
the informations can be delivered properly to the user.
In this final project, there are two private television provider where both are
located in Bandung. Theirs location are alongside cities which are Garut and Sukabumi.
In order to broaden their coverage area, they increased the number of repeater and the
level of power used by the transmitter respectively. Unfortunately, this method leads to an
adjacent channel interference. In order to withstand this effect, policies are made to limit
the usage of the bandwidth. For every service area the allocation is set to be at a
maximum of 70 dBμV/m for V band.
This final project is aimed to analyze the power used by the transmission to
broaden the coverage area of the television services from Bandung to Garut and
Sukabumi. The radiation patterns enhancement and the increase of transmitted power by
the new repeaters are used. As a result, it is proved that for Garut and Sukabumi the 42
dBW and 38,3 dBW are appropriate with the use of the 4-1 and 730-372 antennas
respectively in the 42nd and 44th channels. In the attained transmitted power, the adjacent
channel interference can be evaded. In case of the extending the coverage area, there are
still some particular areas which are delicate to overcome due to its geograhical contour
which are mainly mountains.;The rapid growth of various business and marketing leads to the needs of reliable,
attractive, and dynamic telecommunication media. Broadcasting is one of the popular
media which ever used in centuries. In the practical utilities, the broadcasting services use
a particular radio spectrum frequency with respect to the ITU-T standard. The
broadcasting services provide the essential informations which are directly served to the
public user. Broadcasting is rather used to publicize the information than the radio due to
its perceptibility through the sound and image repsentations. Consequently, the larger the
coverage area of the broadcasting services the more advantages can be obtained because
the informations can be delivered properly to the user.
In this final project, there are two private television provider where both are
located in Bandung. Theirs location are alongside cities which are Garut and Sukabumi.
In order to broaden their coverage area, they increased the number of repeater and the
level of power used by the transmitter respectively. Unfortunately, this method leads to an
adjacent channel interference. In order to withstand this effect, policies are made to limit
the usage of the bandwidth. For every service area the allocation is set to be at a
maximum of 70 dBμV/m for V band.
This final project is aimed to analyze the power used by the transmission to
broaden the coverage area of the television services from Bandung to Garut and
Sukabumi. The radiation patterns enhancement and the increase of transmitted power by
the new repeaters are used. As a result, it is proved that for Garut and Sukabumi the 42
dBW and 38,3 dBW are appropriate with the use of the 4-1 and 730-372 antennas
respectively in the 42nd and 44th channels. In the attained transmitted power, the adjacent
channel interference can be evaded. In case of the extending the coverage area, there are
still some particular areas which are delicate to overcome due to its geograhical contour
which are mainly mountains., The rapid growth of various business and marketing leads to the needs of reliable,
attractive, and dynamic telecommunication media. Broadcasting is one of the popular
media which ever used in centuries. In the practical utilities, the broadcasting services use
a particular radio spectrum frequency with respect to the ITU-T standard. The
broadcasting services provide the essential informations which are directly served to the
public user. Broadcasting is rather used to publicize the information than the radio due to
its perceptibility through the sound and image repsentations. Consequently, the larger the
coverage area of the broadcasting services the more advantages can be obtained because
the informations can be delivered properly to the user.
In this final project, there are two private television provider where both are
located in Bandung. Theirs location are alongside cities which are Garut and Sukabumi.
In order to broaden their coverage area, they increased the number of repeater and the
level of power used by the transmitter respectively. Unfortunately, this method leads to an
adjacent channel interference. In order to withstand this effect, policies are made to limit
the usage of the bandwidth. For every service area the allocation is set to be at a
maximum of 70 dBμV/m for V band.
This final project is aimed to analyze the power used by the transmission to
broaden the coverage area of the television services from Bandung to Garut and
Sukabumi. The radiation patterns enhancement and the increase of transmitted power by
the new repeaters are used. As a result, it is proved that for Garut and Sukabumi the 42
dBW and 38,3 dBW are appropriate with the use of the 4-1 and 730-372 antennas
respectively in the 42nd and 44th channels. In the attained transmitted power, the adjacent
channel interference can be evaded. In case of the extending the coverage area, there are
still some particular areas which are delicate to overcome due to its geograhical contour
which are mainly mountains.]"
Fakultas Teknik Universitas Indonesia, 2016
S62067
UI - Skripsi Membership  Universitas Indonesia Library
cover
"This book presents select papers from the International Conference on Emerging Trends in Communication, Computing and Electronics (IC3E 2018). Covering the latest theories and methods in three related fields - electronics, communication and computing, it describes cutting-edge methods and applications in the areas of signal and image processing, cyber security, human-computer interaction, machine learning, electronic devices, nano-electronics, wireless sensor networks, antenna and wave propagation, and mobile communication. The contents of this book will be beneficial to students, researchers, and professionals working in the field of networks and communications."
Singapore: Springer Nature, 2019
e20509907
eBooks  Universitas Indonesia Library
cover
Mehta, V.K.
Ram Nagar: New Delhi: S. Chand, 1982
621.319 1 MEH p
Buku Teks  Universitas Indonesia Library
cover
Yunida
"

 

ABSTRAK

   Double perovskite (A2B’B”O6 dan A2B’B”X6) merupakan material yang saat ini banyak diteliti karena memiliki berbagai macam sifat fisika dan kimia sebagai variasi dari kation pada site A maupun site B. Material tersebut dapat memiliki sifat fisika lebih dari satu atau bersifat multiferroic. Beberapa penelitian menemukan bahwa Mn3+ yang didoping pada kation site B sehingga membentuk formasi double perovskite La2FeMnO6 memiliki sifat magnetik yang baik untuk aplikasi thin films. Didalam penelitian ini, material double perovskite La2FeMnO6 (LFMO) telah disintesis menggunakan metode sol-gel dengan variasi durasi sintering. Hasil analisa XRD menggunakan software Fullproof  menunjukkan semua sampel memiliki struktur cubic dan pm-3m space group. Pertambahan nilai pada parameter kisi, volume maupun ukuran kristal terjadi karena semakin berkurangnya octahedral tilting didalam sampel seiring dengan bertambahnya durasi sinter. Hasil analisa XRF menunjukkan unsur utama yaitu La, Fe dan Mn pada sampel memiliki stoichiometric double perovskite dengan perbandingan 2:1:1. Hasil analisa SEM menunjukkan butir partikel sampel yang secara umum memiliki bentuk inhomogeneous spherical. Ukuran grain pada hasil SEM yang tidak linier disebabkan adanya aglomerasi partikel pada sampel setelah melalui proses sintering yang cukup lama yaitu 6 jam. Pengujian sifat listrik dilakukan menggunakan metode spektroskopi impedansi dengan variasi frekuensi (1 kHz – 1 MHz) dan temperatur (30 ° – 125 °C). Optimasi sifat struktur pada double perovskite La2FeMnO6 dapat terlihat pada semakin lama durasi sintering yang digunakan peak intensitas pada pola XRD semakin bertambah yang mengindikasikan bahwa sampel memiliki struktur yang semakin baik. Optimasi sifat listrik terlihat pada sampel dengan durasi sintering selama 1 jam dimana sampel tersebut memiliki nilai konstanta dielektrik yang lebih tinggi dibandingkan dengan yang lainnya.

 


 

ABSTRACT

   Double perovskite (A2B’B”X6) are materials which most intensely studied due to various chemicals and physical properties as a variation of cation at A site or B site. These materials have a multiferroic behavior. La2FeMnO6 double perovskite compounds that have been reported in the literature, it has magnetic properties that matching well for thin films. LFMO materials have been synthesized using a sol-gel method with variation sintering duration. XRD characterization using software fullproof showed that all of the samples have a cubic structure and pm-3m space group. Increasing the value of lattice parameter, volume, and crystallite size due to decreasing octahedral tilts on a sample as increasing sintering duration. The XRF analysis showed that La, Fe, and Mn on the sample had a double perovskite stoichiometric with a ratio of 2:1:1. SEM analysis results showed the particles of samples generally have an inhomogeneous spherical form. Grain size in SEM results that are not linear it is because there are agglomeration on particles with sintering process along 6 H. Optimization on the structural properties of La2FeMnO6 double perovskite showed that the longer sintering duration the peak intensity on XRD pattern is increase which indicates the sample has a better structure. Optimization of electrical properties can be seen in samples with a sintering duration of 1 H where the sample has a higher dielectric constant value than the others.

 

"
Depok: Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Indonesia, 2020
T-pdf
UI - Tesis Membership  Universitas Indonesia Library
cover
"This book highlights cutting-edge research on various aspects of human–computer interaction (HCI). It includes selected research papers presented at the Third International Conference on Computing, Communication and Signal Processing (ICCASP 2018), organized by Dr. Babasaheb Ambedkar Technological University in Lonere-Raigad, India on January 26–27, 2018. It covers pioneering topics in the field of computer, electrical, and electronics engineering, e.g. signal and image processing, RF and microwave engineering, and emerging technologies such as IoT, cloud computing, HCI, and green computing. As such, the book offers a valuable guide for all scientists, engineers and research students in the areas of engineering and technology. "
Singapore: Springer Singapore, 2019
e20502597
eBooks  Universitas Indonesia Library
cover
"The volume presents high quality papers presented at the Second International Conference on Microelectronics, Computing & Communication Systems (MCCS 2017). The book discusses recent trends in technology and advancement in MEMS and nanoelectronics, wireless communications, optical communication, instrumentation, signal processing, image processing, bioengineering, green energy, hybrid vehicles, environmental science, weather forecasting, cloud computing, renewable energy, RFID, CMOS sensors, actuators, transducers, telemetry systems, embedded systems, and sensor network applications. It includes original papers based on original theoretical, practical, experimental, simulations, development, application, measurement, and testing. The applications and solutions discussed in the book will serve as a good reference material for future works."
Singapore: Springer Singapore, 2019
e20502126
eBooks  Universitas Indonesia Library
cover
"Communications, Signal Processing, and Systems is a collection of contributions coming out of the International Conference on Communications, Signal Processing, and Systems (CSPS) held August 2012. This book provides the state-of-art developments of Communications, Signal Processing, and Systems, and their interactions in multidisciplinary fields, such as audio and acoustic signal processing. The book also examines Radar Systems, Chaos Systems, Visual Signal Processing and Communications and VLSI Systems and Applications. Written by experts and students in the fields of Communications, Signal Processing, and Systems."
New York: Springer New York, 2019
e20501286
eBooks  Universitas Indonesia Library
cover
Gustaf Bahtiar
"Motor induksi adalah jenis motor yang paling banyak digunakan baik di industry maupun untuk dipergunakan pada rumah tangga. Salah satu jenis motor induksi adalah motor induksi satu fasa. Jenis motor induksi satu fasa sangat banyak jenisnya salah satunya adalah motor induksi satu fasa jenis fluks radial. Pada simulasi optimasi ketebalan magnet pada rotor magnet permanen fluks radial, diperlukan perancangan dengan menggunakan program bantu komputer, untuk mengetahui bahwa ketebalan magnet mempengaruhi distribusi kerapatan fluks.

Induction motor is a type motor is the most widely used both in industry and for uset at home. One type of induction motor is single phase induction motors. There are many type of single phase induction motor, one of them is the type of single phase induction motor rotor cage type. On the simulation optimization of magnetic thickness permanent magnet rotor radial flux, required design using computer aids program, to know that the thickness of the magnetic flux density affects the distribution."
Depok: Fakultas Teknik Universitas Indonesia, 2012
S43028
UI - Skripsi Open  Universitas Indonesia Library
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