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US 5,402,089 AGranted
Asymmetrically coupled TE.sub.21 coupler
AssigneeHughes Aircraft Company
InventorsGeorge I. Tsuda, Harold A. Uyeda
Life of this patent
Estimating the term…
Abstract
A TE.sub.21 coupler having at least two auxiliary rectangular waveguides asymmetrically disposed around the center line of a TE.sub.21 circular waveguide, the waveguides sharing common walls in which coupling slots are disposed, the slots providing for rectangular TE.sub.10 mode propagation coupling to orthogonally aligned TE.sub.21 modes in the circular waveguide.
Claims9
An asymmetrically coupled TE.sub.21 coupler, comprising:
- TE.sub.21 circular waveguide means dimensioned to support no higher order circular waveguide modes and having a center line therethrough, and for supporting orthogonally aligned TE.sub.21 modes therein;
- auxiliary waveguide means including at least one pair and no more than two pairs of auxiliary rectangular waveguides supporting TE.sub.10 modes, each of the rectangular waveguides of said one or two pairs being asymmetrically disposed around said circular waveguide means relative to said center line, said circular and rectangular waveguides sharing respective common walls;
- coupling means disposed in said common walls for providing rectangular TE.sub.10 mode propagation coupling to said orthogonally aligned TE.sub.21 modes;
- and
- combining circuitry coupled to said auxiliary waveguide means for combining signals at said auxiliary rectangular waveguides.
2 more elements
An asymmetrically coupled TE.sub.21 coupler, comprising:
- TE.sub.21 circular waveguide means dimensioned to support no higher order circular waveguide modes and having a center line therethrough, and for supporting orthogonally aligned TE.sub.21 modes therein;
- auxiliary waveguide means including at least two auxiliary rectangular waveguides supporting TE.sub.10 modes, asymmetrically disposed around said circular waveguide means relative to said center line, said circular and rectangular waveguides sharing respective common walls;
- coupling means disposed in said common walls for providing rectangular TE.sub.10 mode propagation coupling to said orthogonally aligned TE.sub.21 modes;
- and
- quadrature hybrid means coupled to said rectangular waveguides for combining said two equal orthogonally aligned TE.sub.21 modes with a 90.degree. time phase offset.
2 more elements
An asymmetrically coupled TE.sub.21 coupler, comprising:
- TE.sub.21 circular waveguide means dimensioned to support no higher order circular waveguide modes and having a center line therethrough, and for supporting orthogonally aligned TE.sub.21 modes therein;
- auxiliary waveguide means including at least two auxiliary rectangular waveguides supporting TE.sub.10 modes, asymmetrically disposed around said circular waveguide means relative to said center line, said circular and rectangular waveguides sharing respective common walls, said auxiliary waveguide means including two pairs of oppositely disposed auxiliary waveguides, each pair being disposed asymmetrically around said circular waveguide means relative to said center line;
- coupling means disposed in said common walls for providing rectangular TE.sub.10 mode propagation coupling to said orthogonally aligned TE.sub.21 modes;
- and
- quadrature hybrid combiner and combining circuitry means including a 1:2 combiner coupled to each said pari of auxiliary waveguides, the output of each of said 1:2 combiners being coupled to separate inputs of said quardrature hybrid combiner.
2 more elements
Dependencies are inferred from the claim text.