عنوان

Wide-range and multi-frequency antennas /

شابک

1351043218

شابک

1351043226

شابک

1351043234

شابک

1351043242

شابک

9781351043212

شابک

9781351043229

شابک

9781351043236

شابک

9781351043243

شابک اشتباه

1138487449

شابک اشتباه

9781138487444

عنوان اصلي

Wide-range and multi-frequency antennas /

نام عام مواد

[Book]

نام نخستين پديدآور

Boris Levin, Holon Institute of Technology, Lod, Israel.

محل نشرو پخش و غیره

Boca Raton, FL :

نام ناشر، پخش کننده و غيره

CRC Press/Taylor & Francis Group,

تاریخ نشرو بخش و غیره

[2018]

نام خاص و کميت اثر

1 online resource.

متن يادداشت

"A Science Publishers book."

متن يادداشت

Includes bibliographical references and index.

متن يادداشت

Expanding the range of antenna frequency is the main objective of this book. Solutions proposed are based on the development of new theoretical methods for analyzing and synthesizing antennas. The book shows that concentrated capacitive loads connected along linear and V-antennas provide a high level of matching with a cable over a wide frequency range and improves directional characteristics of antennas, i.e. increases the communication distance. New theoretical methods are proposed for analysis and synthesis of antennas under consideration: 1) method of calculating directional characteristics of radiators with a given current distribution, and 2) method of electrostatic analogy for calculating mutual and total fields of complex multi-element radiating structures. These methods allow us to obtain optimal directional characteristics for director-type antennas (arrays of Yagi-Uda) and log-periodic antennas with concentrated capacitances and show that use of capacitors makes it possible to extend the frequency range of the director antennas and to decrease dimensions of the log-periodic antennas Multi-element (flat and three-dimensional) self-complementary antennas with different variants of connecting generator poles and cable wires to antenna elements are proposed, which improves the matching with a cable. Characteristics of flat structures are compared with characteristics of volume structures: conical, parabolic, and located on a pyramid edges. The book describes new versions of transparent antennas, antennas for cellular communication, multi-tier and multi-radiator antennas, and much more.

عنوان

Wide-range and multi-frequency antennas.

شماره استاندارد بين المللي کتاب و موسيقي

9781138487444

موضوع مستند نشده

Ultra-wideband antennas.

موضوع مستند نشده

SCIENCE / Life Sciences / General

موضوع مستند نشده

TECHNOLOGY & ENGINEERING / Mechanical

موضوع مستند نشده

TECHNOLOGY / Telecommunications

موضوع مستند نشده

Ultra-wideband antennas.

موضوع مستند نشده

SCI-- 086000

موضوع مستند نشده

TEC-- 009070

موضوع مستند نشده

TEC-- 041000

موضوع مستند نشده

TEC-- 061000

موضوع مستند نشده

TJKD

شماره

ويراست

شماره رده

نشانه اثر

مستند نام اشخاص تاييد نشده

Levin, Boris, (Electrical engineer)

تاريخ عمليات

20200822162530.0

قواعد فهرست نويسي ( بخش توصيفي )

pn

نام الکترونيکي

نوع ماده

[Book]

تكميل شده

Y