| US 7,463,110 B2 | ||
| Transition device between a waveguide and two redundant circuits coupled each to a coplanar line | ||
| Luc Lapierre, Toulouse (France); Jerome Puech, Toulouse (France); Odile Picon, Paris (France); Ahlem Ramdane, Noisy le Grand (France); and Elodie Richalot-Taisne, Neuilly sur Marne (France) | ||
| Assigned to Centre National d'Etudes Spatiales (C.N.E.S.), Paris (France) | ||
| Appl. No. 11/629,303 PCT Filed Jun. 15, 2005, PCT No. PCT/FR2005/001491 § 371(c)(1), (2), (4) Date Feb. 16, 2007, PCT Pub. No. WO2006/005841, PCT Pub. Date Jan. 19, 2006. |
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| Claims priority of application No. 04 06596 (FR), filed on Jun. 17, 2004. | ||
| Prior Publication US 2007/0285143 A1, Dec. 13, 2007 | ||
| Int. Cl. H03H 5/00 (2006.01); H03H 7/38 (2006.01); H01P 1/10 (2006.01); H01P 5/12 (2006.01) | ||
| U.S. Cl. 333—26 [333/33; 333/105; 333/262] | 25 Claims |
| 1. Redundant transition device between an electromagnetic waveguide (1) and at least two redundant circuits (2, 3), called processing circuits, this transition device comprising two coplanar lines (5, 6) formed on a plate, called a substrate, of dielectric material, each coplanar line comprising, in a same plane, a central
transmission strip (7; 10) and two lateral ground strips (8, 9; 11, 12), one on each side of said transmission strip, separated from the latter by electromagnetic waveguide slots (21, 22; 23, 24), said transmission strip and ground strips extending primarily in a direction called the longitudinal line direction, each
coplanar line (5) having a longitudinal end (17), called the connection end, for coupling to one (2) of the processing circuits associated with said coplanar line,wherein:
the two coplanar lines (5, 6) extend one on each side of a single substrate (4), on two principal opposite faces (27, 28) thereof,
the two coplanar lines (5, 6) extend, in part at least, into the waveguide (1);
each coplanar line (5) has a longitudinal end (16), called the transfer end, opposite its connection end, adapted to channel an electromagnetic wave between the waveguide
and the slots (21, 22) of said coplanar line;
each coplanar line (5, 6) is provided with means (25, 26), called phase shifting means, adapted for inverting the phase of an electric field on one side of the central transmission
strip (7, 10) of said coplanar line, in order to transmit electrical energy essentially in a coplanar mode along said transmission strip
between the phase shifting means and the processing circuit, and to transmit electrical energy essentially in a guide mode
in the waveguide beyond the transfer end.
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