Beijing Boe Sensor Technology Co., Ltd.

Arshad Mehmood

Alexander Gäbler

Ahmet Kenan Keskin

Yordan Bozmarov

Kashan Mobeen

A phased array antenna device includes at least one antenna element arranged in a spatial distribution to emit and receive superposing radio frequency signals to and from different directions. Each antenna element is positioned within a corresponding unit cell. The unit cells are arranged in a non-overlapping manner next to each other. A feeding network for transmitting the antenna signals between a common feeding point and the respective antenna element includes a plurality of antenna element transmission line segments each running into an antenna element and a corresponding plurality of phase shifting devices. The feeding transmission line segments each includes more than two transition structures distributed along the feeding transmission line segment. Each transition structure provides for a signal coupling between the feeding transmission line segment and the corresponding antenna element transmission line segment, thereby connecting several antenna element transmission line segments with the same feeding transmission line segment.

Phased array antenna device

A transition unit of a radio frequency device provides a transition between a planar differential pair transmission line and a hollow radio frequency waveguide. It comprises a substrate layer arrangement with a planar differential pair transmission line arranged on one or more surfaces of at least one substrate layer, whereby an end section of the differential pair transmission line is configured as a radio frequency signal transition pattern. It further comprises an end section of a waveguide that is attached to the substrate layer arrangement and that superposes the radio frequency signal transition pattern. The waveguide is directed perpendicular to the substrate layer arrangement. An open end of the end section of the waveguide is attached to a first outer surface or a second outer surface of the substrate layer arrangement. The transition pattern comprises open loop shaped end sections of a first and second transmission line segment.

Radio frequency device providing a transition unit for coupling a hollow waveguide to a differential pair transmission line having overlapping open loops

A phased array antenna device comprises antenna elements arranged in a spatial distribution to emit and receive superposing radio frequency signals to and from different directions. Each antenna element is positioned within a corresponding unit cell. The unit cells are arranged in a non-overlapping manner next to each other. A feeding network for transmitting the antenna signals between a common feeding point and the respective antenna element comprises a plurality of antenna element transmission line segments each running into an antenna element and a corresponding plurality of phase shifting devices. The feeding transmission line segments each comprises more than two transition structures distributed along the feeding transmission line segment. Each transition structure provides for a signal coupling between the feeding transmission line segment and the corresponding antenna element transmission line segment, thereby connecting several dedicated antenna element transmission line segments with the same feeding transmission line segment.

A phased array antenna device comprises antenna elements positioned within a corresponding unit cell. The unit cells are arranged non-overlappingly next to each other. A feeding network transmits antenna signals between a common control unit and the respective antenna element. The feeding network comprises a plurality of antenna element transmission line segments, each running into an antenna element, and a plurality of phase shifting devices. Several feeding transmission line segments, each comprising more than two transition structures are provided. Each transition structure couples a signal into a corresponding antenna element transmission line segment. The transition structure for an antenna element transmission line segment that runs into a unit cell is positioned in the direction of the feeding transmission line segment passing by or traversing this unit cell at a phase shifting distance that is larger than an extension of the unit cell measured in this direction.

Growing community of inventors

Darmstadt, Germany

Arshad Mehmood