Electromagnetic field near a parasitic cylindrical antenna

Near Fields of a Cylindrical Antenna

“…The limited accuracy of (16) or (17) is mentioned by King and Wu (1966b). King and Wu (1966a) emphasize the close agreement obtained using /(z) and F(z) approximations, and the limitations of this work appear to .be also overlooked in a more recent survey by King (1967). However, the numerical results of the present study are shown to be consistent with (19).…”

Near Fields of a Cylindrical Antenna

“…The limited accuracy of (16) or (17) is mentioned by King and Wu (1966b). King and Wu (1966a) emphasize the close agreement obtained using /(z) and F(z) approximations, and the limitations of this work appear to .be also overlooked in a more recent survey by King (1967). However, the numerical results of the present study are shown to be consistent with (19).…”

Human Body as Antenna and Its Effect on Human Body Communications

“…This is based on the implicit assumption that the ground is perfectly conductive and there are no nearby objects that rescatter the near-field. The calculation of fields near the cylinder model in Section 2.3 is valid for distances very close to the cylinder ρ < 10a [19]. The total axial current for unloaded case (Z L = 0), as well as the magnetic field close to the cylinder, which does not involve a derivative of the total axial current, are excellent approximations.…”

“…Enforcing the thin-wire approximation, fields very close to the cylinder can be approximately calculated by replacing the volume charge distribution with the total charge line density located on the axis of the cylinder [19]. Therefore, the radial electric field E 2z (ρ, z) very close to the cylinder is approximated as…”

Near Fields of a Cylindrical Antenna

“…The limited accuracy of (16) or (17) is mentioned by King and Wu (1966b). King and Wu (1966a) emphasize the close agreement obtained using /(z) and F(z) approximations, and the limitations of this work appear to .be also overlooked in a more recent survey by King (1967). However, the numerical results of the present study are shown to be consistent with (19).…”

Human Body as Antenna and Its Effect on Human Body Communications

“…This is based on the implicit assumption that the ground is perfectly conductive and there are no nearby objects that rescatter the near-field. The calculation of fields near the cylinder model in Section 2.3 is valid for distances very close to the cylinder ρ < 10a [19]. The total axial current for unloaded case (Z L = 0), as well as the magnetic field close to the cylinder, which does not involve a derivative of the total axial current, are excellent approximations.…”

“…Enforcing the thin-wire approximation, fields very close to the cylinder can be approximately calculated by replacing the volume charge distribution with the total charge line density located on the axis of the cylinder [19]. Therefore, the radial electric field E 2z (ρ, z) very close to the cylinder is approximated as…”

Near Fields of a Cylindrical Antenna

“…The limited accuracy of (16) or (17) is mentioned by King and Wu (1966b). King and Wu (1966a) emphasize the close agreement obtained using /(z) and F(z) approximations, and the limitations of this work appear to .be also overlooked in a more recent survey by King (1967). However, the numerical results of the present study are shown to be consistent with (19).…”

Human Body as Antenna and Its Effect on Human Body Communications

“…This is based on the implicit assumption that the ground is perfectly conductive and there are no nearby objects that rescatter the near-field. The calculation of fields near the cylinder model in Section 2.3 is valid for distances very close to the cylinder ρ < 10a [19]. The total axial current for unloaded case (Z L = 0), as well as the magnetic field close to the cylinder, which does not involve a derivative of the total axial current, are excellent approximations.…”

“…Enforcing the thin-wire approximation, fields very close to the cylinder can be approximately calculated by replacing the volume charge distribution with the total charge line density located on the axis of the cylinder [19]. Therefore, the radial electric field E 2z (ρ, z) very close to the cylinder is approximated as…”