Phase slope equalizer for satellite antennas
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United States of America Patent
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-
Sep 19, 1989
Grant Date -
N/A
app pub date -
Nov 30, 1987
filing date -
Dec 4, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A phase slope equalizer is a recent device used to replace phase shifters in feed networks for satellite communications antennas. The phase slope equalizer has been further refined so that, once manufactured, it does not require tuning and is well suited to integration in larger systems. Three main embodiments are disclosed, one based on a waveguide configuration and the other two on a square coaxial configuration. In the case of the waveguide configuration half wavelength short-circuited stubs spaced by a quarter wavelength are used and in the case of one of the square coaxial configurations half wavelength open-circuited stubs spaced by a quarter wavelength are used. The third embodiment uses quarter wavelength short-circuited stubs spaced by a quarter wavelength.
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