Radiation Q of small vertically polarized dipole antennas over a ground planeAlthough the radiation quality factor of small antennas in free space has been investigated extensively in the past, the exact effect of a conducting ground plane on the antenna bandwidth is still not clearly understood. ...
A theory is presented giving far-field radiation patterns and surface-wave behavior for vertically polarized antennas located at zero height over flat ground, with a surface impedance which can be discontinuous along a radius from the antenna. The theory is based on the radiation from the surface...
3. The antenna of claim 1 wherein said dipole has a length of about λ/2. 4. An antenna as in claim 1, wherein said dipole axis is oriented vertically relative to the earth's surface to provide a vertically polarized antenna which has an omnidirectional radiation pattern in a plane para...
3871000Wide-band vertically polarized omnidirectional antenna1975-03-11Tymann343/771 3189908Ridged waveguide slot antenna1965-06-15Provencher343/771 3164834Waveguide tower with stacked slot radiators1965-01-05Nikolayuk343/771 2455224Antenna1948-11-30Buchwalter et al.343/771 ...
Mousavi, "Investigation of wideband substrate-integrated vertically- polarized electric dipole antenna and arrays for mm-wave 5G mo- bile devices," IEEE Access, vol.6, pp.2145-2157, 2018. DOI: 10.1109/ACCESS.2017.2782083W. El-Halwagy, R. Mirzavand, J. Melzer, M. Hossain, and P. Mous...
Dipole antennasAntenna theoryA theory is presented giving far-field radiation patterns and surface-wave behavior for vertically polarized antennas located at zero height over flat ground, with a surface impedance which can be discontinuous along a radius from the antenna. The theory is based on the...
The design emulates the conventional quasi-Yagi antenna by introducing multiple parasitic planar dipole elements that function as directors. However, unlike conventional designs, the proposed antenna radiates a vertically polarized wave by employing virtual dipoles oriented perpendicular to the plane. This ...
Measurements of Vertically Polarized Electromagnetic Surface Waves Over a Calm Sea in HF Band. Comparison to Planar Earth TheoriesGround-wave fieldHF band measurementsplanar earth modelsurface-wave propagationvertical electric dipoleRadio communication over Earth along mixed-paths in the HF band is a ...
A vertically polarized log-period antenna of the dipole type is disclosed, in which the top ends of all the dipole elements are directly coupled to the antenna's main support catenary. The antenna's feed line is used to perform a structural support function, so as to reduce the structural ...
The uni-pole is top-loaded by the horizontally polarized aerial which is formed as a V-aerial 10, 11. The dipole gives omni-directional operation. This aerial is coupled to associated radio equipment via a balun coaxial line transformer 16. The aerials are encased in a streamlined fibre-...