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1. worldradiohistory.com › Bernards › BP198-An-Introduction-to-Antenna-TheoryAn Introduction to Antenna Theory - World Radio History

   worldradiohistory.com › Bernards › BP198-An-Introduction-to-Antenna-Theory

   1. Definition of the Antenna and Wave-Motion The radio antenna may be defined as the interface between a circuit in which electrical power is constrained to follow conducting paths, and electromagnetic radiation travelling freely through space. The antenna may convert power in the circuit into radiated energy or vice versa, forming either

2. ocw.mit.edu › courses › 6-013-electromagnetics-and-applications-spring-2009Chapter 10: Antennas and Radiation - MIT OpenCourseWare

   ocw.mit.edu › courses › 6-013-electromagnetics-and-applications-spring-2009

   An antenna is a device that couples currents to electromagnetic waves for purposes of radiation or reception. The process by which antennas radiate can be easily understood in terms of the way in which accelerating charged particles or time-varying currents radiate, which is discussed in Section 10.1.

3. onlinelibrary.wiley.com › doi › 10Fundamental Parameters and Definitions for Antennas

   onlinelibrary.wiley.com › doi › 10

   26 lis 2007 · An approximate formula for calculating the directivity of an antenna. Approximate relationship between directivity and beamwidth for broadside collinear arrays. Part II—Geometrical representation of the polarization of a plane electromagnetic wave. Geometrical analysis of partially polarized electromagnetic waves.

4. ocw.mit.edu › courses › 6-661-receivers-antennas-and-signals-spring-2003CHAPTER 3: ANTENNAS - MIT OpenCourseWare

   ocw.mit.edu › courses › 6-661-receivers-antennas-and-signals-spring-2003

   The receiving properties of antennas are characterized by the antenna affective area A(f,T,I), where the available power at the output of the receiving antenna Pr(f) is the product of the effective area of the receiving antenna in direction T,I and the flux density S(Wm-2Hz-1) incident from that direction; i.e.: > @ 1 r 4

5. www.onesdr.com › antenna-length-vs-frequencyAntenna Length vs Frequency – Understanding the Relationship -...

   www.onesdr.com › antenna-length-vs-frequency

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   25 paź 2024 · In radio communications, the length of an antenna is closely related to the frequency of the signal it is designed to transmit or receive. The general rule is that the higher the frequency, the shorter the wavelength, and as a result, the required antenna length decreases.

6. archive.nptel.ac.in › courses › 117/107/117107035Electronics & Communication Engineering - Advanced Antenna Theory...

   archive.nptel.ac.in › courses › 117/107/117107035

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   Modules / Lectures. Introduction, Types of antennas. Radiation mechanism, Poynting vector, Steradian concept, Power intensity. Antenna Parameters: Radiated power, Radiation pattern, Field regions. Antenna Parameters: Directivity, Gain, Antenna polarization.

7. www.researchgate.net › publication › 292263553_Antenna_Theory_Lecture_3Antenna Theory: Lecture #3 [Fundamental Parameters of Antennas]

   www.researchgate.net › publication › 292263553_Antenna_Theory_Lecture_3

   28 sty 2016 · Abstract and Figures. Fundamental Parameters of Antennas To describe the performance of an antenna, definitions of various parameters are necessary. Some of the parameters are interrelated and...