BROAD-BAND VLF TRANSMITTING TERMINATED DIPOLE
Abstract
The need is cited for an efficient, easily constructed broad-band VLF transmitting antenna for ionospheric and other research. A multiconductor horizontal dipole is investigated experimentally and theoretically. The radiated E-field equations are derived for the terminated dipole, and field- strength measurements made out to 1400 km confirm the equations. Two such dipoles (a 5 -conductor over soil of 16 mmho/m conductivity, and another with 10 conductors over a lava bed of 0.8 mmho/m conductivity) were constructed in the California desert. Measurements made yielded design data: impedance measurements to obtain propagation constants, bandwidth, attenuation per unit length, and mutual and characteristic impedances. Methods of improving efficiency of the horizontal dipole are discussed.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 07, 1966
- Accession Number
- AD0629353
Entities
People
- Edwin W. Seeley
Organizations
- Naval Ordnance Laboratory