A radar level gauge system, comprising a transceiver; an antenna; a feed-through connecting the transceiver and the antenna; and processing circuitry coupled to the transceiver. The feed-through comprises a first waveguide section comprising a dielectric plug sealingly arranged in a cylindrical first hollow conductor section having a diameter selected for single mode propagation; a second waveguide section arranged between the transceiver and the first waveguide section and comprising a cylindrical second hollow conductor section having a second diameter selected for single mode propagation, a third waveguide section arranged between the antenna and the first waveguide section comprising a cylindrical third hollow conductor section having a third diameter selected for single mode propagation; a first impedance matching waveguide section arranged between the first waveguide section and the second waveguide section, and a second impedance matching waveguide section arranged between the first waveguide section and the third waveguide section.

A microwave prism is used to repoint an operational Direct-to-Home (DTH) or Very Small Aperture Terminal (VSAT) reflector antenna as part of a ground terminal to receive (or transmit) signals from a different satellite or orbital position without physically moving the reflector or the feed horn antenna. The microwave prism operates by shifting the radiated fields from the horn antenna generally perpendicular to the focal axis of the parabolic reflector in order to cause the main beam of the reflector to scan in response. For an existing reflector antenna receiving signals from an incumbent satellite, a prism has been designed to be snapped into place over the feed horn and shift the fields laterally by a calibrated distance. The structure of the prism is designed to be positioned and oriented correctly without the use of skilled labor. This system allows a satellite service provider to repoint their subscribers to a new satellite by shipping a self-install kit of the prism that is pre-configured to have the correct orientation and position on the feed antenna to correctly re-point the beam at a different satellite once the prism is applied. One benefit of the system is that unskilled labor, i.e., the subscribers themselves, can be used to repoint a large number of subscriber antennas in a satellite network rather than requiring the cost of a truck roll and a technician to visit every site. The microwave prisms to implement this functionality can be constructed in different ways, with homogeneous slabs or blocks, Gradient-Index (GRIN), multi-layered dielectric, geometric or graded-index Fresnel-zone, metasurface, or metamaterial prisms. The geometric and electrical constraints of the design are determined by the incumbent and target satellites, and the ground terminal location.

A method for forming 3D image data representative of the subsurface of infrastructure located in the vicinity of a moving vehicle. The method includes: rotating a directional antenna, mounted to the moving vehicle, about an antenna rotation axis; performing, using the directional antenna whilst it is rotated about the antenna rotation axis, a plurality of collection cycles in which the directional antenna emits RF energy and receives reflected RF energy; collecting, during each of the plurality of collection cycles performed by the directional antenna.

A method for forming 3D image data representative of the subsurface of infrastructure located in the vicinity of a moving vehicle. The method includes: rotating a directional antenna, mounted to the moving vehicle, about an antenna rotation axis; performing, using the directional antenna whilst it is rotated about the antenna rotation axis, a plurality of collection cycles in which the directional antenna emits RF energy and receives reflected RF energy; collecting, during each of the plurality of collection cycles performed by the directional antenna.

An orthomode transducer including a first Boifot junction and a second Boifot junction. Each of the first and second Boifot junctions includes a dual polarized port, a first lateral port, a second lateral port, the first and second lateral port being single polarized, and a third single polarized port along the propagation direction of a signal in the dual polarized port. A first power divider for coupling the first lateral port of the first Boifot junction with the first lateral port of the second Boifot junction to a third port. A second power divider for coupling the second lateral port of the first Boifot junction with the second lateral port of the second Boifot junction to a third port. A third power divider for coupling the third port of the first power divider with the third port of the second power divider to a fourth single polarization port.

An orthomode transducer including a first Boifot junction and a second Boifot junction. Each of the first and second Boifot junctions includes a dual polarized port, a first lateral port, a second lateral port, the first and second lateral port being single polarized, and a third single polarized port along the propagation direction of a signal in the dual polarized port. A first power divider for coupling the first lateral port of the first Boifot junction with the first lateral port of the second Boifot junction to a third port. A second power divider for coupling the second lateral port of the first Boifot junction with the second lateral port of the second Boifot junction to a third port. A third power divider for coupling the third port of the first power divider with the third port of the second power divider to a fourth single polarization port.

The present disclosure relates to a phased array antenna module. The phased array antenna module comprises: multiple antenna units, each of which comprises a first antenna electrode part, a second antenna electrode part spaced apart from the first antenna electrode part, a sensing electrode part electrically connected to the second antenna electrode part, and a ground electrode part spaced apart from the first antenna electrode part with the second antenna electrode part interposed therebetween; a capacitance sensing part to which the sensing electrode part is connected and which senses at least one among the capacitance change between the first antenna electrode part and the second antenna electrode part, the capacitance change between the first antenna electrode part and the ground electrode part, and the capacitance change between the second antenna electrode part and the ground electrode part, and outputs a capacitance sensing signal; and a module control part which is electrically connected to the capacitance sensing part and the second antenna electrode part of each of the antenna units, and controls the antenna units on the basis of the capacitance sensing signal generated by the capacitance sensing part.

A monocone antenna is described for V2X wireless communications. To achieve ultrawide bandwidth, low-profile, omnidirectional radiation, an implementation comprises various components including a circular monocone, a capacitive feed, a ring with grounding vias, capacitive bars, and conductive cylinders. Another implementation comprises a monocone, a capacitive feed, a ground ring with grounding vias, a plurality of first meander lines, each having a first size, and a plurality of second meander lines each having a second size, wherein the second size is larger than the first size.

A radar measuring device with an array antenna for topology detection and a level measurement antenna for fill level measurement. The array antenna is arranged around the level measurement antenna.

A radar measuring device with an array antenna for topology detection and a level measurement antenna for fill level measurement. The array antenna is arranged around the level measurement antenna.