A horn antenna including a ground plane delimiting an upper half-space, a horn forming one end of a waveguide, the horn crossing through the ground plane so that a mouth of the horn is arranged at a predetermined height above the ground plane in the upper half-space. The antenna is characterized in that it includes at least one resistive film arranged around the horn, parallel to an upper face of the ground plane, the resistive film having an electrical resistance suitable for limiting creeping waves.

An apparatus and method for mitigating polarization mismatch in reflector antenna systems. A feed unit is configured to determine a polarization mismatch between a first polarization associated with a first wave and a second polarization associated with a reflector unit. The feed unit pre-distorts the first wave to achieve a compensated polarization for reducing and/or eliminating a polarization mismatch. The pre-distorted first wave having the compensated polarization is used to illuminate the reflector unit. A re-radiated wave is reflected by the reflector unit. Furthermore, the level of the re-radiated wave is increased as a result of the pre-distortion.

A radiating element comprises a radiator, a feed stalk and a parasitic element. The radiator is fed by the feed stalk, and the parasitic element includes an electrically conductive structure that includes a meandered electrically conductive path. A coupling capacitor is formed between the electrically conductive structure and the radiator, and a center frequency of an operating frequency band of the radiator is higher than a center frequency of a first operating frequency band of the parasitic element.

An assembly comprising a device and an obstacle subjected to an incident electromagnetic wave of wavelength λ. The obstacle is formed from an electrically conductive material and has a substantially cylindrical shape of transverse dimensions r with respect to a longitudinal axis (O, ez). The longitudinal axis is substantially perpendicular to a propagation direction of the incident electromagnetic wave. The obstacle further has a maximum transverse dimension d such that the ration λ/d is less than 1. The device is placed on all or a part of a surface of the obstacle and comprises a sleeve with a dielectric coating of equivalent relative permittivity EREQ, of height hP along a longitudinal axis of the sleeve, substantially equal to formula A, and a sleeve with an electrically conductive coating placed on the periphery of the dielectric coating.

The present disclosure relates to an electronic component for the bunched emitting and/or receiving of radar signals. For this, the electronic component comprises: a semiconductor chip, which is embodied to emit and/or to receive the radar signal by means of a primary radiator, and a support, on whose surface the semiconductor chip is arranged for electrical contacting. According to the present disclosure, the surface of the support has at least a first step embodied in such a manner that the radar signal in the case of the emitting and/or receiving is bunched approximately perpendicularly to the surface of the support. In this way, the electronic component-of the present disclosure is suited especially for those applications of radar based distance measurement, which benefit from bunched emitted and received radar signals.

An electronic device with an antenna, according to the present invention, has a cone antenna comprising: a cone radiator which is provided between a first substrate and a second substrate, has the upper part thereof connected to the first substrate and the lower part thereof connected to the second substrate, and has an opening at the upper part; a metal patch formed on the first substrate and spaced apart from the upper opening; and a shorting pin formed to electrically connect the metal patch and a ground layer of the second substrate. The electronic device may further comprise a transceiver circuit which is connected to the cone radiator via a feed and controls so as to radiate a signal via the cone antenna. Accordingly, the size of the entire antenna can be minimized by arranging the metal patch on only one side of the upper opening of the cone antenna.

A nanoscale circuit has an optical antenna receiving the radiation from a mode-locked laser and it responds by transmitting selected microwave or terahertz frequencies with a separate orthogonal antenna. Only MIM diodes, low-pass filters, and a load resistor are used to generate, separate, and transmit at the harmonics of the laser pulse-repetition rate.

A radio module for a wireless communication node comprises (i) a phased antenna array comprising a first set of antenna elements having a first polarization and a second set of antenna elements having a second polarization, (ii) a radio frequency (RF) module comprising a plurality of RF chains that are configured to feed the first and second sets of antenna elements in the phased antenna array, and (iii) a control unit that is configured to control an activation state of each antenna element in the phased antenna array. The radio module further comprises at least one beam narrowing module that is configured to (i) receive signals emitted by any active antenna element in the phased antenna array and (ii) consolidate the received signals into a respective narrow beam composite signal.

An array antenna (A) in a medium (M) comprises a plurality of radiating elements (ER.sub.T) ensuring the transition between the antenna and the medium, the reflectivity of each element depending on a parameter, the reflectivity of a first element being close to that of the medium, the reflectivity of a last element being close to that of the antenna, the reflectivity parameter of the elements varying from one element to the next. A method comprises calculation of a path equal to the sum of the variations of the reflectivity from one element to the next element, optimization of the variation of the reflectivity parameter so that equivalent radar cross-section of the antenna is the lowest possible or the antenna best observes the radiation objectives, determination of the different elements as a function of said parameter, and simulation of the overall reflectivity and/or of the radiation of the antenna.

Embodiments of the present disclosure provide example antennas, example microwave devices, and example communications systems. One example antenna includes an antenna body and a filter component. The antenna body includes an antenna aperture and an optical axis. The antenna body is configured to send and receive a radio frequency signal that passes through the antenna aperture. The filter component is located at the antenna aperture and is disposed perpendicular to the optical axis, where the filter component is configured to filter an interference signal in the radio frequency signal. The filter component includes a filter layer and a support component, where the filter layer is formed by a lossy dielectric, where the support component is configured to support the filter layer, and where the filter layer forms a spatial structure similar to a shutter.