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.

An electromagnetic phased array antenna system comprising a plurality of isotropic radiating elements addressing close in fields and a plurality of non-isotropic radiating elements addressing remote fields with the combined elements used to extend the maximum range of the antenna system. The non-isotropic radiating elements can be formed by adding focusing structures such as lenses or horns in the radiating path of isotropic radiating elements. Antennas with combined isotropic radiating and non-isotropic radiating elements can be utilized for radar, communication and imaging systems. An electromagnetic phased array antenna system comprising a first plurality of radiating elements with a first field of view and a second plurality of radiating elements with a second field of view that is at least 50% narrower. An electromagnetic phased array antenna system with a plurality of omnidirectional receivers and a plurality of non-omnidirectional receivers to extend the far range of the system.

Microwave radar systems using compact form factor devices are described. Examples of such devices include a folded beamformer. The beamformer includes: a linear array of microwave antennas; a principal plane including: a Rotman lens; a first set of coplanar microwave waveguides; and a second set of coplanar microwave waveguides; and a series of one or more first planes parallel to the principal, each first plane including the first set of waveguides. Each plane of the beamformer includes one or more sets of miter bends, each set of miter bends configured to redirect waveguides of the first or second set. The beamformer can be configured for use in a radar system, either as a receiver (RX) beamformer, a transmitter (TX) beamformer, or as a combined transceiver (TRX) beamformer. The radar system can also include a second beamformer for receiving and transmitting using two separate beamformers.

Microwave radar systems using compact form factor devices are described. Examples of such devices include a folded beamformer. The beamformer includes: a linear array of microwave antennas; a principal plane including: a Rotman lens; a first set of coplanar microwave waveguides; and a second set of coplanar microwave waveguides; and a series of one or more first planes parallel to the principal, each first plane including the first set of waveguides. Each plane of the beamformer includes one or more sets of miter bends, each set of miter bends configured to redirect waveguides of the first or second set. The beamformer can be configured for use in a radar system, either as a receiver (RX) beamformer, a transmitter (TX) beamformer, or as a combined transceiver (TRX) beamformer. The radar system can also include a second beamformer for receiving and transmitting using two separate beamformers.

A passive electronically scanned array in a number of phases. Initially, the array system configuration is determined followed by sizing the array, designing, building, and testing a 1D lens, and designing, building, and testing a 1N switch network. This is followed by building and testing the array with associated 1D lenses, and integrating and testing switch networks connected to each lens in array. This is followed by design, build, test, and integration of the orthogonal switch matrix that connects to all of the lens switch matrixes, and system integration.

A passive electronically scanned array in a number of phases. Initially, the array system configuration is determined followed by sizing the array, designing, building, and testing a 1D lens, and designing, building, and testing a 1N switch network. This is followed by building and testing the array with associated 1D lenses, and integrating and testing switch networks connected to each lens in array. This is followed by design, build, test, and integration of the orthogonal switch matrix that connects to all of the lens switch matrixes, and system integration.

A re-configurable magnetoinductive waveguide (300), comprising a plurality of resonator cells, wherein each resonator cell comprises a primary resonator (110) that is inductively coupled to a primary resonator (110) of at least one other resonator cell, and wherein at least one of the plurality of resonator cells is a controllable cell (100) which further comprises a control element (120), the control element (120) having an active control component (125) that is operable to adjust the impedance of the primary resonator (110) of the controllable cell (100) in response to a control signal; wherein: the control element (120) comprises a secondary resonator, the secondary resonator is inductively coupled to the primary resonator (110), and the active control component (125) is arranged to vary the electrical properties of the secondary resonator in response to the control signal.

A quasi-optical beamformer includes a power distributor composed of a succession of parallel-plate dividers extending in a YZ-plane from a first stage to a last stage, each parallel-plate divider comprising, in each of the stages of the corporate structure located under a higher stage, first and second parallel-plate waveguide branches leading to respective parallel-plate dividers of the following stage of the corporate structure, the beamformer furthermore including a plurality of lenses extending longitudinally along the X-axis in at least one stage of the power distributor, so as to apply a delay that is continuously variable along the X-axis, the lenses being placed in each of the branches of the dividers of at least one stage in the power distributor.

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.

A wireless node described herein transmits and receives high frequency signals with three or more different polarizations simultaneously thereby increasing network capacity. The different polarizations can be achieved by using polarizer sheets and/or orthomode transducer assemblies or Cassegrain antennas with multiple subreflectors.