Wave transmission lines and networks – Plural channel systems – Having branched circuits
Patent
1996-08-29
1998-04-07
Gensler, Paul
Wave transmission lines and networks
Plural channel systems
Having branched circuits
333 21R, H01P 518
Patent
active
057369070
ABSTRACT:
A travelling wave coupler autotracking system 10 controls the pointing of an antenna aboard an orbiting satellite by generating tracking signals covering a wideband frequency. The system 10 comprises a waveguide manifold 22 for exciting circular TE.sub.11 and TM.sub.01 modes covering a wideband frequency range, coupling arm waveguides 24, 26 for propagating signals having a phase velocity of TE.sub.10 mode that is the same as the phase velocity of TM.sub.01 mode, and couplers 30 for transforming microwave energy of the TM.sub.01 mode of the circularly polarized microwave signals into TE.sub.10 modes in the coupling waveguide. The system 10 can further comprise 180.degree.-hybrid 20 for combining the TE.sub.10 modes in the coupling waveguides in phase and for generating one or more error signals at different frequencies.
REFERENCES:
patent: 2748350 (1956-05-01), Miller
patent: 4420756 (1983-12-01), Hamada et al.
patent: 5410318 (1995-04-01), Wong et al.
Chen C. Harry
Pacente John P.
Simkins George H.
Gensler Paul
TRW Inc.
Yatsko Michael S.
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