Custom Microwave Inc.

Northrop Grumman Systems Corporation

Isco International, Inc.

Jonathan Raymond Scupin

Philip Elwood Venezia

Clency Lee-Yow

Amr Abdelmonem

Sudhakar K Rao

Stephen K Remillard

Scott C Bundy

Michael W Cromar

A phased array antenna including a plurality of antenna element units mounted to a panel having a first side and a second side. Each antenna unit includes a step aperture integrated radiating (STAIR) antenna element mounted to the first side of the panel and having an outer cylindrical waveguide, a septum polarizer including a plurality of steps and a septum feed structure, and a right hand circularly polarized (RHCP) feed structure electrically coupled to the septum feed structure. Each antenna unit further includes a triplexer module mounted to the second side of the panel and being responsive to a plurality of linearly polarized signals to be transmitted by the STAIR element, where the triplexer module operates to combine the plurality of linearly polarized signals and provide the combined signal to the RHCP feed structure to be converted by the septum polarizer to a circularly polarized signal for transmission.

L-band array element with integrated triplexer for GPS payloads

A method and apparatus forming an efficient and compact waveguide feed with all components for processing signals in multi-frequency band antenna feeds with single/dual linear/circular polarizations with/without tracking. The layout can be realized in a split block configuration using any number of fabrication methods, such as brazing, electroforming, and machining and is most effective when it is realized in a split-block construction, in which the waveguide components are formed in the recesses split about the zero current line. This layout results in a very compact feed, which has excellent electrical characteristics, is mechanically robust, eliminates flange connections between components, and is very cost effective.

Compact multi-frequency feed with/without tracking

A system handles both reception signals collected via an antenna and transmission signals generated by a communication station for transmission via the antenna. The system includes a cryostat, a receive path carrying the reception signals and disposed in the cryostat, and a transmit path carrying the transmission signals. The receive path and the transmit path are coupled between the system and the antenna and between the system and the communication station. Accordingly, the receive path is duplexed with the transmit path such that the front-end system has a first single input/output connection for coupling the front-end system to the antenna and a second single input/output connection for coupling the front-end system to the communication station.

Dual-duplexed, tower-top front-end for a radio transceiver system

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Longmont, CO, United States of America

Jonathan Raymond Scupin