Antenna system employing a self-referencing microwave interferometer for direction finding
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
May 31, 1983
Grant Date -
N/A
app pub date -
Oct 17, 1979
filing date -
Oct 17, 1979
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A direction finding antenna system including a self-referencing interferometer for determining the direction of a source that emits plane wave radiation. The interferometer includes a slab of dielectric material for passing incident plane waves and for guiding coherent waves excited by the incident plane waves, whereby the guided waves interfere with the incident plane waves passing through the slab to form intensity fringe patterns, wherein the fringe spacing in a given dimension along the non-incident surface of the slab equals 2.pi.(K.sub.g -K.sub.o sin .theta.).sup.-1, wherein K.sub.g is the propagation constant of the dielectric material, K.sub.o is the propagation constant of free space, and .theta. is the angle between the normal to the incident surface of the slab and the direction of the incident plane waves. The interferometer further includes an array of sensors distributed on the non-incident surface of the slab for providing sensing signals that indicate the intensity of the interfering waves at predetermined locations on the non-incident surface of the slab. The antenna system is particularly useful in a randome of a guided missile or aricraft.
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