Maryland's Defense Patent Database

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Wide-band active antenna system for HF/VHF radio reception

Patent image
NRL

An active antenna system for receiving electromagnetic radiation at frequencies below 100 MHz. The system includes a vertical support mast; a front end electronics unit including an active balun, the front end electronics unit affixed to the support mast; two crossed-dipole antennas affixed oriented at about 90 degrees to each other, each crossed-dipole antenna having two arms formed of electrically conductive material, each arm having an isoceles triangular frame with an apex of the frame electrically connected to a feedpoint of the front end electronics unit, each arm also having a longitudinal member extending from the apex to the center of the base of the triangular shape and a cross member extending between sides of the triangular frame. The system can operate independently or as part of a long wavelength array for astronomical radio telescope applications.

Inventors: 
Hicks, Brian C.; Stewart, Kenneth P.; Clarke, Tracy; Dalal, Nagini P.; Schmitt, Henrique; Ray, Paul S.; Burns, Stephen J.; Kassim, Namir E.; Polisensky, Emil J.; Mcglothlin Jr., Norman R.
Patent Number: 
Technical domain: 
Communications
FIle Date: 
2013-11-05
Grant Date: 
2015-12-29
Grant time: 
784 days
Grant time percentile rank: 
14
Claim count percentile rank: 
2
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US NAVY