Cellular antennas with improved front-to-back performance
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United States of America Patent
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Feb 16, 1999
Grant Date -
N/A
app pub date -
Feb 4, 1997
filing date -
Feb 4, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A 90 degree azimuth beamwidth is achieved in a narrow cellular antenna, by inclusion of sidewalls. To improve front-to-back performance, slot radiating elements extending through the sidewalls re-radiate signals behind the antenna. Signals re-radiated from the slot elements are effective to partially cancel signals otherwise radiated behind the antenna as a result of diffraction. H-shaped slots are described for sidewall use and side-to-side slots are described for endwall use. Slots may be dielectrically loaded by contiguous portions of a radome.
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Cited Art Landscape
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