Accession Number:

ADD020201

Title:

Omni-Azimuthal Pattern Generator for VLF and LF Communication

Descriptive Note:

Patent application, Filed 18 Feb 2005

Corporate Author:

DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s):

Report Date:

2005-02-18

Pagination or Media Count:

18.0

Abstract:

It is a general purpose and object of the present invention to generate an antenna pattern that does not change as a function of azimuth angle, but has equally good reception from all azimuth angles. It is an additional purpose to generate such an omni-azimuthal antenna pattern over a broad range of frequencies in a manner that does not require manual retuning or adjustment. These objects are accomplished through the introduction of a relative phase shift in a pair of identical orthogonally mounted loop antennas whereby operational-amplifier circuits in a network within the antenna system are all single pole circuits, with the pole frequency of the single pole circuits being adjustable by means of a potentiometer.

Subject Categories:

  • Electrical and Electronic Equipment
  • Direction Finding
  • Radiofrequency Wave Propagation

Distribution Statement:

APPROVED FOR PUBLIC RELEASE