# US 10,483,651 B2 · Transmit-array antenna comprising a mechanism for reorienting the direction of the beam > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,483,651 B2 - Document ID: US10483651B2 - Status: Granted - Kind: B2 - Application number: 16/022,342 - Filed: 2018-06-28 - Published: 2019-01-03 - Granted: 2019-11-19 - Earliest claimed: 2017-06-30 - Assignees: Radiall - Applicants: Radiall - Inventors: Mathieu Huchard; Cyril Barbier; Laurent Petit - Web page: https://patentgrep.com/patent/US10483651B2 ## CPC - H01Q 19/062: {for focusing} - G01S 13/426: {Scanning radar, e.g. 3D radar (G01S13/66 takes precedence)} - H01Q 3/14: for varying the relative position of primary active element and a refracting or diffracting device - H01Q 15/06: comprising plurality of wave-guiding channels of different length - H01Q 19/08: for modifying the radiation pattern of a radiating horn in which it is located {(corrugated horns H01Q13/0208; producing a circular polarisation H01Q13/0241)} - H01Q 21/0018: {Space- fed arrays} - H01Q: ANTENNAS, i.e. RADIO AERIALS (radiators or antennas for microwave heating H05B6/72) - G01S: RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES ## Abstract The present invention relates to a transmit-array radiofrequency antenna comprising: a support; a transmit-array arranged in a plane, called a transmission plane; at least one focal source fixed on the support and arranged at the focal length from the array; and a displacement mechanism for moving the transmit-array, the mechanism being connected to the support and being adapted to translationally move the transmit-array in at least one of the two directions in the transmission plane. ## Claims ### Claim 1 A transmit-array radiofrequency antenna comprising: a support; a transmit-array arranged in a transmission plane, the transmit-array comprising a printed circuit and a plurality of basic cells produced in a central zone of the printed circuit, at least one focal source, fixed on the support and arranged at the focal length from the array; a displacement mechanism for moving the transmit-array, the mechanism being connected to the support and being adapted to translationally move the transmit-array in at least one of the two directions in the transmission plane, the displacement mechanism being connected to the printed circuit in its peripheral zone; wherein the displacement mechanism comprises: two servomotors; two first pantograph devices, each comprising two deformable parallelograms each formed by four articulation segments connected pairwise by a flexible articulation forming a pivot link and one of the segments of which is common to the two parallelograms, in which displacement mechanism, the common segment of each of the two first pantograph devices is connected to one of the two servomotors, whereas one of the segments parallel to the common segment is fixed on the printed circuit in its peripheral zone and the other one of the segments parallel to the common segment is fixed on the support, the connection between each of the common segments with one of the two servomotors being carried out such that one of the servomotors may move the common segment of one of the two first devices and hence move the printed circuit in approximately one of the two directions (X) in the transmission plane, whereas the other one of the servomotors may move the common segment of one of the two first devices and hence move the printed circuit in approximately the other one of the two directions (Y) in the transmission plane. ### Claim 2 (depends on 1) The transmit-array radiofrequency antenna according to claim 1, wherein the displacement mechanism is adapted to translationally move the transmit-array in the two directions of the transmission plane. ### Claim 3 (depends on 1) The transmit-array radiofrequency antenna according to claim 1, wherein the basic cells are patch antennae. ### Claim 4 (depends on 1) The transmit-array radiofrequency antenna according to claim 1, wherein each of the two common segments is connected by a shaft to one of the two servomotors, which shaft is adapted to slide in an opening produced in the support, the shape of the opening being adapted to move the printed circuit in approximately one of the directions (X or Y) in the transmission plane. ### Claim 5 (depends on 1) The transmit-array radiofrequency antenna according to claim 1, wherein the displacement mechanism further comprises: two other pantograph devices, each comprising two deformable parallelograms each formed by four articulation segments connected pairwise by a flexible articulation forming a pivot link and one of the segments of which is common to the two parallelograms, in which displacement mechanism: the common segment of each of the two other pantograph devices is free; one of the other parallel segments is fixed on the printed circuit in its peripheral zone; the other one of the parallel segments is fixed on the support in its peripheral zone; and the four pantograph devices are distributed at 90° to each other around the central zone of the printed circuit. ### Claim 6 (depends on 1) The transmit-array radiofrequency antenna according to claim 1, wherein each pantograph device is a one-piece part. ### Claim 7 (depends on 6) The transmit-array radiofrequency antenna according to claim 6, wherein the one-piece part is made of thermoplastic. ### Claim 8 (depends on 1) The transmit-array radiofrequency antenna according to claim 1, wherein the focal source is of the horn antenna type. ### Claim 9 (depends on 1) An antenna array comprising a plurality of radiofrequency antennae according to claim 1. ### Claim 10 (depends on 7) The transmit-array radiofrequency antenna according to claim 7, wherein the thermoplastic comprises polypropylene.