Abstract: An antenna device includes a substrate having a base material containing a dielectric and a conductor, a waveguide, an antenna, and a matching portion arranged in the base material as a part of the conductor. The antenna faces the upper wall portion, and has a plurality of patch portions arranged in an array, a plurality of feeding lines extending in a direction from the patch portion and individually provided for the patch portions, and a plurality of short-circuit portions individually provided for the patch portions and electrically connecting the patch portion and the upper wall portion. The upper wall portion has a plurality of openings 34 individually formed with respect to the feeding lines. Each of the feeding lines extends into the waveguide through the corresponding opening.

Abstract: The invention relates to a multiband antenna, in particular for wireless networks, comprising: —a ground plane (7) extending along a longitudinal axis (A), —high band radiating elements (9a) set at the extremities of crosses, inclined at 45° with respect to the longitudinal axis (A), with an arm length being a dyadic fraction of a high-band wavelength (OHB), —low band radiating elements (9b) set at the extremities of crosses, inclined at 45° with respect to the longitudinal axis (A), with an arm length being a dyadic fraction of a low-band wavelength (OLB), characterized in that the high and low band radiating elements (9a, 9b) crosses are arranged along the longitudinal axis (A) of the metallic ground plane (7), in that the antenna comprises tubular separation walls (13) in electric contact with the ground plane (7), and in that the crosses are arranged in a pattern, wherein: —at least part of the high-band radiating elements (9a) are set inside the tubular separation walls (13), —the low-band radiating elem

Abstract: An array antenna (A) in a medium (M) comprises a plurality of radiating elements (ERT) 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.

Abstract: An electronic device includes: a first pair of antennas having a first polarization along a first direction in a plane, where the first pair of antennas are spatially offset from each other along a second direction in the plane; and a second pair of antennas having a second polarization along the second direction, where the second pair of antennas are spatially offset from each other along the first direction. During operation, the electronic device may configure switching elements to: select the first pair of antennas and electrically couple the second pair of antennas to ground; or select the second pair of antennas and electrically couple the first pair of antennas to ground. Then, the electronic device may communicate a packet or a frame with a second electronic device via the selected first pair of antennas or the second pair of antennas.

Abstract: This document describes techniques, apparatuses, and systems directed to a waveguide end array antenna to reduce grating lobes and cross-polarization. Referred to simply as the waveguide, for short, utilizes a core made of a dielectric material to guide electromagnetic energy from a waveguide input to one or more radiating slots. The dielectric core includes a main channel and one or more forks. Each fork connects the main channel to one or more tine sections, and each tine section is terminated by a closed end and a radiating slot. These radiating slots are separated from each other by a distance to enable at least a portion of the electromagnetic energy to dissipate in phase through the radiating slots. The dielectric core of the waveguide reduces grating lobes and cross-polarization associated with the electromagnetic energy. An automobile can rely on the waveguide to detect objects with increased accuracy.

Abstract: Methods and systems for creating a device having a switch trace are disclosed. The systems and methods described herein may include a device that has a chassis, the chassis having a top and a bottom, at least one antenna affixed to the top of the chassis, a first laser direct structuring-fabricated (LDS) trace, a second LDS trace, and a button, the button connected to the first LDS trace and the top of the chassis, wherein the button is configured to contact the second LDS trace when the button is depressed and complete a circuit between the first LDS trace and the second LDS trace upon contact.

Abstract: An antenna structure includes a loop radiation element, a balance radiation element, a first additional radiation element, and a second additional radiation element. The loop radiation element has a first feeding point. The balance radiation element has a second feeding point. The balance radiation element is coupled to at least a first connection point on the loop radiation element. The balance radiation element is substantially surrounded by the loop radiation element. The first additional radiation element is coupled to a second connection point on the loop radiation element. The second additional radiation element is coupled to a third connection point on the loop radiation element. The loop radiation element is disposed between the first additional radiation element and the second additional radiation element.

Abstract: To accurately estimate frequency characteristics from structural parameters of a frequency selective surface.

Abstract: Apparatus for transmitting and/or receiving radio frequency, RF, signals, particularly for a mobile radio device for a wireless communications system, particularly a cellular communications system, said apparatus comprising a primary antenna module having a first radiation pattern, at least one secondary antenna module having a second radiation pattern, which is different from said first radiation pattern, and a control unit configured to selectively activate and/or deactivate said primary antenna module and/or said at least one secondary antenna module.

Abstract: The present invention discloses an antenna module and an electronic device. The antenna module is used in the electronic device. The electronic device includes a first housing. The antenna module includes a first antenna, a second antenna and a third antenna. The first antenna is disposed in the first housing and operates at a first frequency band. The second antenna is disposed in the first housing and operates at a second frequency band. The third antenna is disposed in the first housing and is located between the first antenna and the second antenna, and operates at a third frequency band. The first frequency band partially overlaps with the second frequency band, and the third frequency band does not overlap with the first frequency band and the second frequency band.

Abstract: A radio frequency (RF) test hat. The RF test hat may comprise: a body having a substantially rectangular portion with open forward and aft ends, an end cap, arm and strap assembly, absorber material, a receiving antenna, lens, and upper and lower mesh screens. The end cap may couple to the open forward end of the body. The arm and strap assembly may hingedly couple to the open aft end of the body. The absorber material may be within the end cap. The receiving antenna may be disposed within the first absorber material and may measure the intensity of a beam of electromagnetic radiation. The lens may be located within the middle portion of the body and may spread the beam across a larger surface area of the absorber material. The upper and lower mesh screens may be disposed between the end cap and lens and may comprise openings that are substantially hexagonal in shape.

Abstract: A radio frequency (RF) test hat. The RF test hat may comprise: a cylinder having forward and aft ends, end cap, arm and strap assembly, first and second absorber materials, a receiving antenna, and lens. The end cap may couple to the forward end of the cylinder. The arm and strap assembly may hingedly couple to the aft end of the cylinder and may be configured to mount the RF test hat onto a pod or transmitting antenna. The first absorber material may be located within the forward end of the cylinder. The second absorber material may be located near the aft end of the cylinder. The receiving antenna, which may be disposed within the first absorber material, may measure the intensity of a beam of electromagnetic radiation. The lens, which may be located within the middle portion of the cylinder, may spread the beam across a larger surface area of the first absorber material.

Abstract: An antenna element includes a first conductor at a first lateral surface of a substrate having a feed line portion and a monopole portion with a neck extending from the feed line portion and a head at a distal end of the neck. The head has a width greater than a width of the neck and greater than a width of the feed line portion. The head has a slot to increase a bandwidth of the first conductor to at least a first frequency band and a second frequency band. A second conductor is provided on the first lateral surface having first and second ground planes and first and second stubs. The ground planes are disposed adjacent to the feed line portion at opposite sides thereof. The stubs are disposed at opposite sides of the ground planes and extend in a direction essentially parallel to the feed line portion. The ground planes and the stubs are arranged relative to the first conductor to form a coplanar waveguide.

Abstract: A deployable antenna structure is provided that, in one embodiment, implements an offset feed, cylindrical parabolic antenna. The antenna structure employs a semi-rigid panel that can transition from a stowed state characterized by the retention of substantial strain energy to a deployed state characterized by less strain energy than in the stowed state but more than if the panel were in a strain-free state and a portion of the panel having a shape that closely conforms to a cylindrical parabolic shape.

Abstract: A plug-in device is provided for adapting a building's electrical wiring system as an antenna for receiving radio or over-the air television signals. The device has a plug for insertion into an electrical receptacle in the building, a coaxial connector for providing the communication signal captured by the antenna to a signal receiver, and a plurality of conducting wires extending from the plug to the coaxial connector. The conducting wires comprise first and second wires, and a third wire in electrical contact with the coaxial connector. The first and second wires are electrically insulated from each other and from the third wire to prevent passage of alternating current (AC) power to the signal receiver. The wires are wound to inductively transfer the communication signal captured by the antenna to the third wire for output to the signal receiver via the coaxial connector.

Abstract: A measurement device for measuring performance of at least one antenna system in a first frequency band and in a second frequency band. The measurement device including an outer chamber having inwardly radio frequency reflective walls configured to enclose the antenna system, an inner chamber deployable inside the outer chamber, the inner chamber having radio frequency absorptive walls configured to enclose the antenna system, a first test antenna arrangement arranged inside the outer chamber and configured for a measurement operation in the first frequency band, and a second test antenna arrangement arranged inside the inner chamber and configured for a measurement operation in the second frequency band, thereby enabling measuring performance of the antenna system in a reflective radio frequency environment by the first test antenna arrangement and measuring performance in an essentially anechoic radio frequency environment by the second test antenna arrangement.

Abstract: The invention relates to a wire antenna adapted to operate in at least one predetermined frequency band, comprising a plurality of superimposed layers, comprising at least one radiating element placed on a support layer, wherein the support layer is placed on a spacer substrate, and wherein the spacer substrate is placed on a reflector plane comprising at least one resistive layer between the support layer of the radiating element(s) and the substrate spacer, while the resistive layer comprises at least two sets of nested resistive patterns. This antenna is such that the sets of resistive patterns have resistance values gradually varying between a central antenna point and an outer edge of the antenna, in order to achieve a resistance gradient.

Abstract: A two-port antenna system is proposed that uses a polarization-independent spatial power divider to align the beams from two orthogonally oriented dual-polarized feeds. This antenna system is compatible with fully polarimetric radar and provides high port isolation. It simultaneously provides a common aperture for transmit and receive to minimize radar parallax. The spatial power divider is designed using a combination of all-dielectric metamaterial techniques and the concept of miniaturized-element frequency selective surfaces, and is fabricated on a silicon wafer using standard microfabrication technology.

Abstract: A stimulation device notably for testing radio reception devices is provided. It includes a signal generator delivering an amplitude-phase law for beam-forming purposes, transmitted in the form of a composite laser beam which illuminates a matrix of photodiodes of an emission subassembly with active modules separate from the generator, each wavelength of the beam carrying one of the signals defining the amplitude-phase law, intended for an active module. The device comprises means for measuring the orientation of the composite laser beam relative to the matrix of photodiodes of the emission subassembly and the distance traveled by the beam thereto, and correcting the phase law generated by the signal generator so as to neutralize the stray phase-shifts induced by these parameters on the signals transmitted to the emission subassembly.

Abstract: The present invention discloses a reconfigurable wideband phase-switched screen (PSS) based on an artificial magnetic conductor (AMC). Gap capacitance between patches is controlled by changing the capacitance of varactors, so that periodic units have a plurality of continuous frequency points. A phase difference between two adjacent frequency bands is 143°-217°, so that the periodic structure absorbs incident electromagnetic waves in a wide frequency band, and the broadband PSS is implemented with a relative bandwidth of 45.2%. The AMC structure according to the present invention is simple in structure and easy to process, with a thickness less than one twentieth of the working wavelength, and greatly reduces size and costs.