Ditemukan 1392 dokumen yang sesuai dengan query
Siwiak, Kazimierz
Boston : Artech House, 1998
621.384 5 SIW r
Buku Teks Universitas Indonesia Library
Siwiak, Kazimierz.
Boston, MA: Artech House, 1995.
621.384 5IW r
Buku Teks Universitas Indonesia Library
Collin, Robert E.
New York: McGraw-Hill, 1985
621.384 1 COL a
Buku Teks Universitas Indonesia Library
Vaughan, Rodney
"This exceptional book introduces the reader to the principles, theory and applications of physical layer wireless/mobile communications. In the area of wireless, the antennas, propagation and the radio channel used are interrelated; this book offers an explanation of that relationship which is fundamental to the development of systems with high spectral efficiency.
The book emphasises the basic principles needed to establish an understanding of this technology. However, the tools required - such as the mathematics and statistics - are treated in the manner of a practical handbook, avoiding detailed derivations. The reader will develop a clear insight into the physics and effects of multipath and the use of multipath channels for communications. Propagation modelling, simulation and measurement, scattering, antenna principles, array antennas, adaptive antennas and smart antennas are also covered."
London: Institution of Engineering and Technology, 2006
e20451642
eBooks Universitas Indonesia Library
"The book briefs you on energy propagation around and into the body and how to estimate performance of on-body wireless links, and then dives into the nuts-and-bolts of designing antenna systems that deliver the goods. It covers on-body communication channels at microwave frequency bands and at low frequency bands, as well as ultra wideband systems for WPANs and WBANs. You get details on body-centric UWB antennas and channels, as well as advances in wearable mobile, EBG, and ?smart fabric? antennas for cellular and WLAN communications. Chapters on telemedicine applications, such as remote diagnoses, and implantable medical devices cover crucial propagation issues and other obstacles that need to be addressed. Rounding out the coverage is a section on antenna design for body-sensor networks and their emerging military and space applications. Packed with hands-on guidance from noted experts, this volume will be indispensable for your efforts in designing and improving body-centric communication systems. (Publisher)"
Boston, MA: Artech House, 2012
004.019 ANT
Buku Teks SO Universitas Indonesia Library
Ghasemi, Abdollah
"Propagation engineering in wireless communications covers the basic principles needed for understanding of radiowaves propagation for common frequency bands used in radio-communications. This book includes descriptions of new achievements and new developements in propagation models for wireless communication. The book is intended to bridge the gap between the theoretical calculations and approaches to the applied procedures needed for radio links design in a proper manner. The authors intention is to emphasize propagation engineering by giving sufficient fundamental information and then going on to explain the use of basic principles together with technical achievements in this field."
New York: Springer, 2012
e20418393
eBooks Universitas Indonesia Library
Fenn, Alan J.
Boston: Artech House, 2008
621.384 83 FEN a
Buku Teks Universitas Indonesia Library
Sangster, Alan J.
"This book describes and provides design guidelines for antennas that achieve compactness by using the slot radiator as the fundamental building block within a periodic array, rather than a phased array. It provides the basic electromagnetic tools required to design and analyse these novel antennas, with sample calculations where relevant. The book presents a focused introduction and valuable insights into the relevant antenna technology, together with an overview of the main directions in the evolving technology of compact planar arrays.
While the book discusses the historical evolution of compact array antennas, its main focus is on summarising the extensive body of literature on compact antennas. With regard to the now ubiquitous slot radiator, it seeks to demonstrate how, despite significant antenna size reductions that at times even seem to defy the laws of physics, desirable radiation pattern properties can be preserved. This is supported by an examination of recent advances in frequency selective surfaces and in metamaterials, which can, if handled correctly, be used to facilitate physics-defying designs. "
Switzerland: Springer Nature, 2019
e20509677
eBooks Universitas Indonesia Library
Gita Ayu Ardiani
"
ABSTRAKPerkembangan Wireless Body Area Network dalam dunia telemedis terus meningkat seiring kebutuhan dan peningkatan pelayanan, walaupun begitu bentuk komunikasi yang efisien dan efektif menjadi hal yang sangat penting untuk setiap jenis jaringan komunikasi tanpa kabel. Salah satu komponen yang paling penting dalam perhitungan perancangan jaringan komunikasi adalah eksponen path loss. Bedasarkan hal tersebut, maka tujuan dari penelitian ini adalah mengetahui karakteristik propagasi untuk komunikasi on-body dan off-body dengan membandingkan simulasi dan pengukuran menggunakan antena tekstil magnetik pada frekuensi 2.45 GHz dan 924 MHz dengan variasi jarak dalam kondisi LOS dan NLOS. Pada skripsi ini, digunakan friss formula untuk mendapatkan nilai eksponen path loss yang menunjukkan karakteristik dari propagasi. Perhitungan nilai eksponen path loss untuk simulasi dan pengukuran pada komunikasi on-body dengan kondisi LOS dan NLOS berada diantara 1.7-2.1 sedangkan off-body dengan kondisi LOS dan NLOS berada diantara 2.1-5.2. Hasil tersebut menunjukkan bahwa tubuh mempengaruhi nilai eksponen path loss dan memiliki karakteristik tersendiri.Kata Kunci:Antena Tekstil, Pengukuran Path Loss, Komunikasi on-body off-body, Frekuensi Ganda.
ABSTRACTEvolution of Wireless Body Area Network WBAN in telemedicine field keep increased along with needs and enchancement of services, nevertheless an efficient and effective form of communication becomes essential for any type of wireless communication network. One of the most important parameter for designing communication network is path loss exponent. Based on that, the purpose of this research is to know the propagation characteristics for on body and off body communication by comparing the simulation and measurement using magnetic textile antenna at 2.45 GHz and 924 MHz with distance variation in LOS and NLOS conditions. In this thesis, friis formula is used to get the path loss exponent value that shows the characteristics of propagation. The calculation of path loss exponent value for simulation and measurement for on body communication with LOS and NLOS conditions are between 1.7 2.1 while off body with LOS and NLOS conditions are between 2.1 5.2. These results show that the body affects path loss exponents value and has its own characteristics.Keywords Textile Antenna, Path Loss Measurement, On body Off body communication, Dual band"
2017
S-Pdf
UI - Skripsi Membership Universitas Indonesia Library
Goodman, David J.
Reading, Mass.: Addison-Wesley , 1997
621.384 5 GOO w
Buku Teks Universitas Indonesia Library