Integrated microwave radio frequency feed network
AssigneeLockheed Martin Corporation
InventorsJason Stewart Wrigley, Erik Lier, Timothy Patrick Wink
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Abstract
Provided herein are various enhancements for waveguide structures used in radio frequency feed components. In one example, an apparatus includes a septum polarizer having first feed ports and a common port, a high-pass filter coupled to the common port of the septum polarizer, and a multi-port orthomode transducer (OMT) coupled to the high-pass filter and providing an antenna port. The apparatus also includes hybrid couplers coupled to low-pass filters fed from the multi-port OMT, and magic tee elements cross-coupled to the hybrid couplers and providing second feed ports.
Claims20
An apparatus, comprising:
- a septum polarizer having first feed ports and a common port;
- a high-pass filter coupled to the common port of the septum polarizer;
- a multi-port orthomode transducer (OMT) coupled to the high-pass filter and providing an antenna port;
- hybrid couplers coupled to low-pass filters fed from the multi-port OMT;
- and
- magic tee elements cross-coupled to the hybrid couplers and providing second feed ports.
A method, comprising:
- forming a first assembly comprising a first unified cavity having:
- a septum polarizer with first feed ports and a common port;
- a first segment of a high-pass filter coupled to the common port of the septum polarizer;
- first segments of hybrid couplers;
- and
- magic tee elements comprising difference ports providing second feed ports, sum ports, and co-linear ports cross-coupled to the first segments of the hybrid couplers;
- forming a second assembly comprising a second unified cavity having:
- a second segment of the high-pass filter;
- second segments of the hybrid couplers;
- low-pass filters coupled to second segments of the hybrid couplers;
- an antenna port;
- and
- a multi-port orthomode transducer (OMT) coupled to the second segment of the high-pass filter, the low-pass filters, and the antenna port;
- and
- joining the first assembly to the second assembly to form a joined cavity.
A waveguide cavity structure, comprising:
- a septum polarizer with first feed ports and a common port;
- a high-pass filter coupled to the common port of the septum polarizer;
- a multi-port orthomode transducer (OMT) coupled to the high-pass filter and providing an antenna port;
- hybrid couplers coupled to low-pass filters fed from the multi-port OMT;
- and
- magic tee elements cross-coupled to the hybrid couplers and providing second feed ports and sum ports.
Dependencies are inferred from the claim text.