Accession Number:

AD0637580

Title:

AN EASILY CONSTRUCTED VLF TRANSMITTING ANTENNA.

Descriptive Note:

Corporate Author:

NAVAL ORDNANCE LAB CORONA CALIF

Personal Author(s):

• SEELEY,E. W.

Report Date:

1966-08-08

Pagination or Media Count:

21.0

Abstract:

A moderately efficient, low cost, broad-band VLF transmitting antenna that can easily be consstructed over low-conductivity terrain is discussed. The antenna consists of 20 horizontal conductors 12 km in length that are arranged into four dipoles wavelength2 apart which radiate a 26 degrees steeerable beam. The dipoles are 1 wavelength and are fed off-center to obviate vertical radiation their radiation patterns and those of the four-dipole array are presented. Dipole input impedances and antenna efficiency at 20 kHz are derived antenna voltage and current at 1 MW input power are shown to be satisfactory. Author

Descriptors:

• *ANTENNAS
• VERY LOW FREQUENCY
• DIPOLE ANTENNAS
• ANTENNA RADIATION PATTERNS
• BROADBAND
• ELECTRICAL IMPEDANCE

Subject Categories:

• Electrical and Electronic Equipment

Distribution Statement:

APPROVED FOR PUBLIC RELEASE