Reflector antenna with injection molded feed assembly
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United States of America Patent
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Jan 10, 2006
Grant Date -
Jan 27, 2005
app pub date -
Jul 25, 2003
filing date -
Jul 25, 2003
priority date (Note) -
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Abstract
A reflector antenna with a self supported feed assembly that may be formed by injection molding. A waveguide portion of the feed assembly has a dielectric cone at a distal end that supports and retains a sub reflector, for example along a periphery of the sub reflector. A conductive surface coating on an internal surface of the waveguide and a bottom surface of the sub reflector creates surfaces with RF reflective and conductive properties. The return loss of the feed assembly is reduced due to a reduction of the thickness of the material forming the dielectric cone, compared to prior dielectric block designs and a soft boundary condition produced by dielectric coating of the waveguide which aids in reducing reflections to the vertex area of the reflector.
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