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