US 7,397,323 B2Granted

Orthomode transducer

AssigneeWide Sky Technology, Inc.

InventorBehzad Tavassoli Hozouri

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Abstract

A waveguide orthomode transducer. In a first layer a turnstile junction having a main waveguide and four waveguide ports, and four hybrid tees each have an e-port, two opposed side-ports, and an h-port. The hybrid tees are ring-arranged around the turnstile junction so the waveguide ports each communicate with one h-port, so adjacent hybrid tees inter communicate with their respective side-ports, and so the e-ports form two sets of opposed e-ports. In a second layer two h-plane power dividers/combiners each have an axial-port and two opposed side-ports. The h-plane power dividers/combiners are arranged so their respective side-ports communicate with different ones of the two sets of opposed e-ports and so their axial-ports are polarization ports. This permits a single signal with two fundamental orthogonally polarized modes to enter the main waveguide and exit separated at the polarization ports vice versa.

Claims4

Dependent claims

A waveguide orthomode transducer, comprising:

in a first layer:
a turnstile junction having a main waveguide and four waveguide ports;
four hybrid tees each respectively having an e-port, two opposed side-ports, and an h-port;
and wherein said hybrid tees are ring-arranged around said turnstile junction such that said waveguide ports each communicate with said h-port of one said hybrid tee, such that adjacent said hybrid tees communicate with each other via their respective said side-ports, and such that said e-ports of said hybrid tees form two sets of opposed e-ports;
in a second layer:
two h-plane power dividers/combiners each respectively having an axial-port and two opposed side-ports;
and wherein said h-plane power dividers/combiners are each arranged such that their respective said side-ports communicate with different ones of said two sets of opposed e-ports and such that said axial-ports of said h-plane power dividers/combiners are polarization ports, thereby permitting a single radio frequency signal including two orthogonally polarized modes to enter the transducer at said main waveguide and exit the transducer separated at said polarization ports or permitting two radio frequency signals each including a different orthogonally polarized mode to enter the transducer at a respective said polarization port and exit the transducer combined at said main waveguide.

4 more elements

Dependencies are inferred from the claim text.