Omni-azimuthal pattern generator for VLF and LF communication

Details Omni-azimuthal pattern generator for VLF and LF communication Omni-azimuthal pattern generator for VLF and LF communication

2006-09-12

2006-09-12

Nguyen, Hoang V. (Department: 2821)

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

C342S361000

Reexamination Certificate

active

07106269

ABSTRACT:
A relative phase shift is induced in the signals of a pair of identical orthogonal antennas such that when the signals are combined the signals are 90 degrees out of phase. This is done in order to eliminate the null along the axis between the two dipole moments of the antennas such that the system has equally good reception from all azimuth angles over a broad range of frequencies. The phase shift is accomplished with the use of single pole operational amplifier circuits whose pole frequencies are adjusted by means of a potentiometer prior to implementation of the antenna system.

REFERENCES:
patent: 4209791 (1980-06-01), Gerst et al.
patent: 4697191 (1987-09-01), Cross
patent: 5343173 (1994-08-01), Balodis et al.
patent: 5943012 (1999-08-01), Sinclair
patent: 6445357 (2002-09-01), Sinclair

Affiliated with

Also associated with

Rating

Omni-azimuthal pattern generator for VLF and LF communication does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Omni-azimuthal pattern generator for VLF and LF communication, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Omni-azimuthal pattern generator for VLF and LF communication will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3583164