Military versus commercial antenna dictionary
Military versus commercial antenna dictionary
(OP)
Please, is there any way one might align the following military antennas to commercial antennas:
AS-3775/A VHF/UHF/LOS
AS-3775/A VHF/UHF/L-Band
AS-3711 HF 2-6MHz
AS-3772 HF 6-30MHz
AS-3018/A UHF SATCOM
OE-424 EHF SATCOM
for purpose of knowing their electrical and physical data (dimensions and weight)?
AS-3775/A VHF/UHF/LOS
AS-3775/A VHF/UHF/L-Band
AS-3711 HF 2-6MHz
AS-3772 HF 6-30MHz
AS-3018/A UHF SATCOM
OE-424 EHF SATCOM
for purpose of knowing their electrical and physical data (dimensions and weight)?





RE: Military versus commercial antenna dictionary
RE: Military versus commercial antenna dictionary
Preston E. Law Jr. "Shipboard Antennas," 2nd Edition, Artech House, Inc., 1986
RE: Military versus commercial antenna dictionary
RE: Military versus commercial antenna dictionary
1.
http://www.valcom-guelph.com/highfreq/oe416.html
for AS-3771B/U
2.
http://www.fas.org/man/dod-101/sys/ac/equip/an-alq-136.htm
for AS-3711
RE: Military versus commercial antenna dictionary
Anyone know of an prior art on this concept ?
The turnstiles are the usual crossed dipoles fed to produce CP. The End Fire Array is the usual one quarter wavelength spacing and 90 degree phasing to produce a uni-directional pattern. The combination of these two concepts will produce the Whirligig - an antenna that (aimed horizontally) would look a bit like a small Quad Antenna support structure less the wires.
It would be advantageous to orient it as an X rather than a cross. Less height, more symmetry and better circularity.
Obviously the relative phases could be fiddled to send RHCP or LHCP either forward or backward.
The application (for those that are curious) is UHF SatCom on aircraft where it is easy to provide coverage up, left and right; but difficult to provide coverage front and rear. With this Whirligig Antenna, the front and rear could be filled in quite easily to provide complete coverage for highly mobile platforms.
I haven't found any references to prior art, but I would not be surprized that someone out there somewhere has mentioned this concept before.
Email your comments or pointers to VE1BLL@rac.ca
RE: Military versus commercial antenna dictionary