Localizer antenna system
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Feb 12, 2002
Grant Date -
N/A
app pub date -
Jan 20, 1999
filing date -
Jan 20, 1999
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
This invention relates to improvements in runway localizer antennas for the Instrument Landing System (ILS). The environment of modern airports has required that localizer antenna systems have larger apertures, with more elements, in order to produce the narrow beams needed to reduce multi-path interference. This, in turn, causes increases in the cost and complexity of the DU and associated coaxial feed cables. This invention uses features of a slotted cable antenna to replace a central distribution unit with a low-loss rigid copper transmission line running the entire length of the array. The radiating elements are fed from short cables through adjustable capacitors connected periodically along the rigid line.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully