Wave transmission lines and networks – Plural channel systems – Having branched circuits
Reexamination Certificate
2006-11-07
2006-11-07
Lee, Benny (Department: 2817)
Wave transmission lines and networks
Plural channel systems
Having branched circuits
C333S02100R, C333S126000
Reexamination Certificate
active
07132907
ABSTRACT:
The module comprises an input/output access point at a first end of a waveguide with a square cross section, called a square waveguide, two access points made of waveguides with a rectangular cross section, called rectangular waveguides, placed side by side at a second end of the square waveguide and a septum positioned in the square waveguide at the end of a separation region common to the two rectangular waveguides in order to allow the production of two circular polarizations of opposite handedness each associated with a rectangular waveguide. The module is arranged so as to form a diplexer in which the septum is included and where the access points by rectangular waveguide are extended by filters, each access point being endowed with a filter provided in order to transmit a frequency band which is different. The steps of the septum are dimensioned so as to compensate for reflections.
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patent: 3958193 (1976-05-01), Rootsey
patent: 6166699 (2000-12-01), Khammouni et al.
patent: 6812804 (2004-11-01), Rosenberg et al.
patent: 178259 (1986-04-01), None
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patent: 99/14815 (1999-03-01), None
V.K. Lakshmeesha et al “A compact high power S-band dual frequency, dual polarized feed” Proceedings of the Antennas and Propagation Society Annual Meeting. 1991, New York, NY, vol. 2, Jun. 24, 1991, pp. 1607-1610.
Copy of search report dated Jan. 2, 2003.
Chambelin Philippe
Hirtzlin Patrice
Le Naour Jean-Yves
Cromarty Brian J.
Glenn Kimberly E
Laks Joseph J.
Lee Benny
Shedd Robert D.
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