AN EXPERIMENTAL INVESTIGATION OF MODIFIED DIPOLE ANTENNAS
OHIO STATE UNIV COLUMBUS ELECTROSCIENCE LAB
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Dipole antennas with metallic shells for housing electronic equipment at the center which are called modified dipole antennas were investigated. Measurements were made on the input admittances and far field patterns of the modified dipole antennas with cylindrical and spherical shells. The input admittances of 120 degrees vee-antennas with spherical shells were also measured. The metallic shells were constructed in two diameters, 0.0625 wavelength and 0.03125 wavelength. The operating frequency used was 375 MHz. Admittance measurements were made using a Hewlett-Packard Model 803A VHF Bridge. Input admittances were measured as a function of antenna wire length. Radiation patterns were measured in the E sub thetatheta plane for various antenna wire lengths in the resonant region.
- Electrical and Electronic Equipment