Antenna array
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United States of America Patent
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-
Jul 11, 2006
Grant Date -
Dec 30, 2004
app pub date -
Apr 5, 2004
filing date -
Mar 20, 2001
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An antenna (10) having a plurality of unitary dipole antennas (12) formed by folding a stamped piece of sheet metal. Each of the unitary dipole antennas (12) are fed by two stripline feed systems (20, 22). Each of these feed systems are separated above and extend over a groundplane (14) and are separated by an air dielectric to minimize intermodulation (IM). Phase shifters (40, 42, 44) in combination with a downtilt control lever (52) are slidably adjusted beneath the respective dividing portions of the stripline feed system to adjust signal phase and achieve a uniform beam tilt having uniform and balanced side lobes. These stripline feed systems can also be formed from stamped sheet metal and which have distal ends bent 90.degree. upward to couple to the respective dipole antennas (12).
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