High power broadband feed
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United States of America Patent
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Aug 5, 2003
Grant Date -
Aug 22, 2002
app pub date -
Feb 22, 2002
filing date -
Feb 22, 2001
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A ridged feed horn antenna for use in broadband satellite communications. This multi-ridged feed horn operates in a receive band of 10-13 GHz and a transmit band of 14-15 GHz. The ridged feed horn antenna comprises excitation conductors which excite the field between each of the ridges in the feed horn antenna. The excitation conductors are connected to each of the ridges. A waveguide, terminated at the back of the horn antenna, enables the ridges to guide the energy from their respective excitation conductors toward the mouth of the feed horn antenna. A planar balun and matching circuit, located at the back of the horn antenna, may be used to feed each of the excitation conductors. Furthermore, the cross-section of each excitation conductor is chosen so as to optimize horn antenna performance. Each excitation conductor extends outwardly from the back of the horn and is parallel to the longitudinal axes of the horn waveguide. Essentially, a dual-ridged feed horn would require two excitation conductors and a quad-ridged feed horn would require four excitation conductors.
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