Communications: radio wave antennas – Antennas – With spaced or external radio wave refractor
Patent
1987-12-28
1989-12-05
Hille, Rolf
Communications: radio wave antennas
Antennas
With spaced or external radio wave refractor
343770, 343771, 342372, H01Q 1310
Patent
active
048855928
ABSTRACT:
A lightweight antenna array which can quickly scan or switch radiation patterns, characterized by an array of slot-type radiators wherein the impedance of each radiating element can be varied, preferably by a computer controlled circuit containing particular groups of the radiators, wherein each grouping is defined by a unique set of impedance values for the radiators. The groups of radiators in the array can be slectively generated to scan and/or switch pattern footprints and/or change near-field radiation characteristics and/or alter antenna aperture size, density, distribution, spacing or frequency of operation. An adaptive technique, using an algorithm, can be employed to generate the radiator groupings.
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Kofol J. Stephen
Schroepfer Daniel A.
Hille Rolf
Shudy, Jr John G.
Wimer Michael C.
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