U-dipole radiating elements and antennas
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United States of America Patent
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Jun 29, 1999
Grant Date -
N/A
app pub date -
Feb 21, 1997
filing date -
Feb 21, 1997
priority date (Note) -
Expired
status (Latency Note)
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Abstract
U-dipole radiating elements (10) and associated feed conductors (20, 22) are cut or stamped from brass sheet stock. Each U-dipole (10) is then bent up at 90 degrees to the signal distribution conductor (22) which is supported in front of a reflector (12). The U-dipole element (10) includes a first dipole-type conductor segment (14) connected near one end to a feed segment (20) which is the sole signal feed path to the U-dipole element. A second dipole-type conductor segment (16), which is spaced from and parallel to and coextensive with first segment (14), is connected to the other end of the first segment (14). An antenna may include one or more individual U-dipole elements cut from sheet stock and connected to feed points. In a linear array antenna configuration, a group of U-dipole elements (10a-10b) and associated signal feed network components may be cut in a unitary form from a sheet of conductive material and supported in front of a reflector surface. This provides a relatively simple, low cost antenna with a minimum of junctions between components and capable of providing low intermodulation product performance.
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