Accession Number:

AD0360988

Title:

FEASIBILITY OF DESIGN OF OMEGA ANTENNAS BY FERRITE-LOADING TECHNIQUES

Descriptive Note:

Technical rept. Jan 1964-May 1965

Corporate Author:

ITT FEDERAL LABS NUTLEY NJ

Report Date:

1965-05-01

Pagination or Media Count:

83.0

Abstract:

Ferrite-loading techniques for transmitting antennas were investigated extensively for application to the design of VLF, LF, and HF radiators. In a previous technical report the theoretical analysis of linear loading was developed. Experimental verifications conducted at H.F. 2 to 26 mcs provided excellent agreement with the theoretical calculations. On the basis of these results, a design of transmitting antenna system for Omega application was developed. This consisted of a cage-type structure built with 500-ft ferrite-loaded monopoles, supported by means of 500- or 650-ft towers. To provide a check of the validity of the extrapolation, an experimental investigation of a low-frequency antenna representing approximately a 10-to-1 model of the proposed Omega system was undertaken. After a thorough study of ground-plane techniques and requirements, a site was selected at Nutley, NJ. and a 100-fthigh vertical monopole using ferrite-loading techniques was built. Permission for the erection of the required 100-ft towers was granted. Although, at the date of the writing of this report, the investigation of the properties of this transmitting system is not completed, a wealth of experimental results of great technical significance was obtained.

Subject Categories:

  • Electrical and Electronic Equipment
  • Electric Power Production and Distribution

Distribution Statement:

APPROVED FOR PUBLIC RELEASE