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Antennas

Antennas

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This chapter discusses a system consisting of a transmitting antenna and a receiving antenna that may be represented by a two-port network having the admittance matrix shown in the subsequent figures. An antenna array is used to produce particular directional properties of the radiated field.

Chapter Contents:

  • The Hertzian Dipole
  • Properties of the Far Field
  • Power or Radiation Pattern
  • Radiation Resistance
  • The Magnetic Dipole
  • Finite (Lossless) Dipole Antennas
  • The Angle Factor
  • Input Impedance
  • Lossy Dipole Antennas
  • Radiative Efficiency
  • Antenna Arrays
  • Principle of Pattern Multiplication
  • Radiation Intensity, Directive Gain, and Directivity
  • Coupled Antennas: Equivalent Circuits and the Reciprocity Theorem
  • Effective Aperture of an Antenna
  • (Power) Gain
  • The Friis Transmission Equation
  • Effects of a Ground Plane
  • Beam Solid Angle
  • Effective Antenna Length
  • Diffraction Patterns
  • Polarization Loss Factor (PLF)
  • HPBW and BWFN
  • Hansen-Woodyard Criteria

Inspec keywords: transmitting antennas; dipole antennas; two-port networks; receiving antennas; directive antennas; antenna arrays; antenna radiation patterns

Other keywords: radiated field; receiving antennas; two-port network; directional antennas; antenna arrays; admittance matrix; transmitting antennas; dipole antennas

Subjects: Antenna arrays; Single antennas

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