Microwave antennas having both wide elevation beamwidth and a wide azimuth beamwidth over a wide frequency bandwidth
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United States of America Patent
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Apr 6, 1993
Grant Date -
N/A
app pub date -
May 22, 1991
filing date -
May 23, 1990
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A microwave horn antenna comprising a hollow cylindrical horn (11) having a rear section of tapered internal dimension extending towards a tubular radiation open end. The open end incorporates a number of parallel-sided slots (17), which extend at angles of 45 degrees to the horn axis. The slots (17) terminate at the open end in semi-circular cut-out portions (17B). A dielectric lens (19) is fitted over the open end of the horn. The antenna provides a wide beamwidth of approximately 90 degrees over a frequency ban of 8 to 18 GHz.
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