Abstract: Example embodiments relate to substrate integrated waveguide (SIW) transitions. An example SIW may include a dielectric substrate having a top surface and a bottom surface and a first metallic layer portion coupled to the top surface of the dielectric substrate that includes a single-ended termination, an impedance transformer, and a metallic rectangular patch located within an open portion in the first metallic layer portion such that the open portion forms a non-conductive loop around the metallic rectangular patch. The SIW also includes a second metallic layer portion coupled to the bottom surface of the dielectric substrate and metallic via-holes electrically coupling the first metallic layer to the second metallic layer. The SIW may be implemented in a radar unit to couple antennas to a printed circuit board (PCB). In some examples, the SIW may be implemented with only a non-conductive opening that lacks the metallic rectangular patch.

Abstract: Systems and methods for designing, optimizing, patterning, forming, and manufacturing symphotic structures are described herein. A symphotic structure may be formed by identifying a continuous refractive index distribution calculated to convert each of a plurality of input reference waves to a corresponding plurality of output object waves. The continuous refractive index distribution can be modeled as a plurality of subwavelength voxels. The system can calculate a symphotic pattern as a three-dimensional array of discrete dipole values to functionally approximate the subwavelength voxels. A symphotic structure may be formed with a volumetric distribution of dipole structures. A dipole value, such as a dipole moment (direction and magnitude) of each dipole is selected for the volumetric distribution to convert a plurality of input reference waves to a target plurality of output object waves.

Abstract: An electronic package is provided and includes a first carrier structure having a plurality of antenna feed lines, and an antenna module disposed on the first carrier structure. The antenna module includes a substrate body having a plurality of recesses with different depths. Further, antenna layers are formed in the plurality of recesses and electromagnetically coupled to the antenna feed lines so as to improve the overall radiation efficiency of the antenna assembly.

Abstract: Example embodiments relate to substrate integrated waveguide (SIW) transitions. An example SIW may include a dielectric substrate having a top surface and a bottom surface and a first metallic layer portion coupled to the top surface of the dielectric substrate that includes a single-ended termination, an impedance transformer, and a metallic rectangular patch located within an open portion in the first metallic layer portion such that the open portion forms a non-conductive loop around the metallic rectangular patch. The SIW also includes a second metallic layer portion coupled to the bottom surface of the dielectric substrate and metallic via-holes electrically coupling the first metallic layer to the second metallic layer. The SIW may be implemented in a radar unit to couple antennas to a printed circuit board (PCB). In some examples, the SIW may be implemented with only a non-conductive opening that lacks the metallic rectangular patch.

Abstract: An antenna according to one embodiment comprises: a substrate; a radiator attached to the substrate and radiating an electromagnetic signal; a metal plate antenna disposed to be spaced apart from the radiator in the vertical direction of the radiator; a fixing rod for supporting the metal plate antenna; and a sub patch antenna comprising a first surface attached to the fixing rod and a second surface attached to the substrate, wherein a partial region of the metal plate antenna and a partial region of the radiator overlap in the vertical direction.

Abstract: A radiating element includes at least two feeding guides and one horn common to at least two feeding guides and having an excitation interface, each feeding guide comprising a port guide and an excitation guide connected to the port guide by a port interface and connected to the common horn by the excitation interface, each excitation guide being flared in the direction from the port interface to the excitation interface, each excitation guide not having an axis of symmetry, the two feeding guides being disposed symmetrically relative to one another.

Abstract: A ceiling antenna includes a first antenna element, a second antenna element, a base plate, a spiral tail and a feeder. The second antenna element is fixedly connected to the first antenna element. The second antenna element is fixed to the base plate. The spiral tail is disposed around the edge of the second antenna element and provided with a notch. The feeder is connected to the first antenna element and the second antenna element, and feeds the first antenna element and the second antenna element.

Abstract: A signal transceiver apparatus includes at least one plug-in card and a backplane. The plug-in card includes two waveguide boards, a multi-layer circuit board disposed between the two waveguide boards, and an antenna array and a first waveguide interface that are mounted on each of the two waveguide boards. A waveguide slot is provided on one side, facing the multi-layer circuit board, of each of the two waveguide boards. A metal layer corresponding to the waveguide slot is disposed on each of two sides of the multi-layer circuit board, wherein the metal layers and the waveguide slots cooperate to form two waveguide channels that are respectively located on two sides of the multi-layer circuit board and that each are connected to the antenna array and the first waveguide interface.

Abstract: Embodiments of the invention include a dispersion reduced dielectric waveguide and methods of forming such devices. In an embodiment, the dispersion reduced dielectric waveguide may include a first dielectric material that has a first Dk-value, and a second dielectric material that has a second Dk-value that is greater than the first Dk-value. In an embodiment, the dispersion reduced dielectric waveguide may also include a conductive layer formed around the first and second dielectric materials. According to an embodiment, a first portion of a bandwidth of a signal that is propagated along the dispersion reduced dielectric waveguide is primarily propagated along the first dielectric material, and a second portion of a bandwidth of the signal that is propagated along the dispersion reduced dielectric waveguide is primarily propagated along the second dielectric material.

Abstract: In a general aspect, a radar system includes a photonic crystal receiver. In some aspects, the radar system includes a transmitter station configured to emit probe signals of RF electromagnetic radiation into a region. The radar system also includes a receiver station configured to process return signals of RF electromagnetic radiation from the region. The return signals are based on probe signals scattered from one or more objects in the region. The receiver station includes a photonic crystal receiver formed of dielectric material. The photonic crystal receiver includes an antenna structure, a photonic crystal structure, and a vapor. The receiver station also includes an optical system and a data processing subsystem. The optical system is configured to generate spectroscopic data based on optical signals from the photonic crystal receiver. The data processing subsystem is configured to generate a time series of property data based on the spectroscopic data.

Abstract: An apparatus is disclosed herein for a cylindrically fed antenna and method for using the same. In one embodiment, the antenna comprises an antenna feed to input a cylindrical feed wave and a tunable slotted array coupled to the antenna feed.

Abstract: In an embodiment, an antenna includes a one-dimensional array of antenna cells, a signal feed, and signal couplers. The antenna cells are each spaced from an adjacent antenna cell by less than one half a wavelength at which the antenna cells are configured to transmit and to receive, are configured to generate an array beam that is narrower in a dimension than in an orthogonal dimension, and are configured to steer the array beam in the dimension. And the signal couplers are each configured to couple a respective one of the antenna cells to the signal feed in response a respective control signal having an active level. For example, the antenna cells can be arranged such that a straight line intersects their geometric centers.

Abstract: A fill level measurement device includes a potential isolation in a waveguide assembly. The waveguide portion is connected to measurement electronics and inserted into a cylindrical recess in the potential isolation and is rotatable therein. A front region of the potential isolation consists of a tubular or conical region having a smaller inner diameter.

Abstract: A method and apparatus is disclosed herein for antenna element placement are disclosed. In one embodiment, an antenna comprises an antenna feed to input a cylindrical feed wave; a single physical antenna aperture having at least one antenna array of antenna elements, where the antenna elements are located on a plurality of concentric rings concentrically located relative to an antenna feed, wherein rings of the plurality of concentric rings are separated by a ring-to-ring distance, wherein a first distance between elements along rings of the plurality of concentric rings is a function of a second distance between rings of the plurality of concentric rings; and a controller to control each antenna element of the array separately using matrix drive circuitry, where each of the antenna elements is uniquely addressed by the matrix drive circuitry.

Abstract: An antenna substrate includes a cap substrate including first antenna conductors arranged lengthwise and crosswise on a first insulating layer facing each other, and a first connection pad on the outer peripheral edge of the first insulating layer's lower surface; a frame substrate including a second connection pad on an outer peripheral edge of a second insulating layer's upper surface and a third connection pad on an outer peripheral edge of the second insulating layer's lower surface; and a base substrate including a plurality of second antenna conductors arranged on a third insulating layer's upper surface and a fourth connection pad on an outer peripheral edge of the third insulating layer's upper surface. The base, frame and cap substrates are layered in this order. First opening portions in the second insulating layer have an outer periphery located radially outward from the first antenna conductor's outer periphery in a top view.

Abstract: An antenna substrate includes a cap substrate including a first antenna conductor located on upper and lower surfaces of a first insulating layer; a frame substrate including an opening located in the second insulating layer and having an outer periphery that surrounds an individual of or a collective number of outer peripheries of the plurality of first antenna conductors in a top view; a base substrate including a second antenna conductor located on an upper surface of a third insulating layer; a first adhesive material adhering the first insulating layer and the second insulating layer; and a second adhesive material adhering the second insulating layer and the third insulating layer; and the first adhesive material and the second adhesive material include a first bonding member and a second bonding member having an adhesive strength to the second insulating layer greater than that of the first bonding member.

Abstract: Antenna (1) for railway vehicles comprising: a plurality of photonic band gaps PGB cells (2), placed adjacent each other and made of a layer of low dielectric properties material placed on a metal ground plane (4), wherein each photonic band gap cell (2) form a reflector (6) of the antenna (1); a plurality of first metallic bars (8), placed on top of the PBG cells (2); a plurality of second metallic bars (10), each embedded, at least partially, in the thickness of the low dielectric properties material; wherein the second metallic bars (10) are each roughly perpendicular to the respective reflector (6).

Abstract: The present invention relates to a waveguide for transmission of electromagnetic wave signals and a chip-to-chip interface apparatus comprising the same. According to one aspect of the invention, there is provided a waveguide for transmission of electromagnetic wave signals, comprising: a dielectric part; and a conductor part surrounding at least a part of the dielectric part, wherein a signal of a first frequency band is transmitted through the dielectric part, and a signal of a second frequency band lower than the first frequency band is transmitted through the conductor part.

Abstract: A wireless communication module includes a horn antenna and a semiconductor chip, and the horn antenna and the semiconductor chip are integrally formed by a mold resin and are connected through a transmission line. The horn antenna includes an open end provided on a longitudinal end face of the wireless communication module; an antenna conversion unit located on an opposite side of the open end and connected with the semiconductor chip through the transmission line; and a side face part whose shape is varied in a thickness direction of the wireless communication module in a manner such that an opening area is widened from the antenna conversion unit toward the open end.

Abstract: Higher isolation solutions for printed circuit board mounted antenna and waveguide interfaces are provided herein. An example waveguide mounted onto a dielectric substrate can enclose around a periphery of an antenna and contain radiation produced by the antenna along a path that is coaxial with a centerline of the waveguide. The waveguide can have a first portion having a first cross sectional area that is substantially polygonal that transitions to a second cross sectional area that is substantially conical. A shape of the radiation produced by the antenna is altered by the first portion as the radiation propagates through the first portion. A second portion includes an elongated tubular member coupled with the first portion.

Abstract: A waveguide device includes: an electrically conductive member having an electrically conductive surface; a waveguide member having an electrically-conductive waveguide face of a stripe shape opposing the electrically conductive surface, the waveguide member extending along the electrically conductive surface; and an artificial magnetic conductor extending on both sides of the waveguide member. The waveguide member has a bend at which the direction that the waveguide member extends changes. A waveguide which is defined by the electrically conductive surface, the waveguide face, and the artificial magnetic conductor includes a gap enlargement where a gap between the electrically conductive surface and the waveguide face is locally increased. In a perspective view along a direction perpendicular to the electrically conductive surface, at least a portion of the bend has an overlap with the gap enlargement.

Abstract: A panel array antenna comprises an input layer including a waveguide network coupling an input feed on a first side thereof to a plurality of primary coupling cavities on a second side thereof, and an output layer on the second side of the input layer. The output layer includes an array of horn radiators, respective horn radiator inlet ports in communication with the horn radiators, and respective slot-shaped output ports in communication with the respective horn radiator inlet ports to couple the horn radiators to the primary coupling cavities. The horn radiators, the respective horn radiator inlet ports, and the respective slot-shaped output ports are integrated in a monolithic layer, which is configured to provide respective output signals from the horn radiators having a polarization orientation that is rotated by a desired polarization rotation angle relative to respective input signals received at the respective slot-shaped output ports coupled thereto.

Abstract: The invention compensates for abnormal operating temperatures and/or abnormal behaviors of a holographic metasurface antenna (HMA) that is generating a beam based on a holographic function. The HMA is characterized with different holographic functions for a plurality of operating temperatures and a plurality of behaviors during the manufacturing process. The characterization of the HMA identifies different hologram functions that cause the HMA to generate more or less heat or exhibit more or less abnormal behavior while generating equivalent beams. Further, or more characterizations of a hologram function may be performed remotely after the HMA is installed in a real world environment. An operating temperature and/or a temperature gradient may be detected by temperature sensors physically located on a circuit board for the HMA.

Abstract: Radio frequency (RF) isolators are described, coupling circuit domains operating at different voltages. The RF isolator may include a transmitter which emits a directional signal toward a receiver. Layers of materials having different dielectric constants may be arranged to confine the emission along a path to the receiver. The emitter may be an antenna having an aperture facing the receiver.

Abstract: An apparatus includes a first waveguide configured to propagate electromagnetic energy along a propagation direction. The apparatus further includes a first waveguide flange configured to selectively operate in one of a plurality of modes. When operating in a first mode, the apparatus radiates at least a portion of the electromagnetic energy from the first waveguide via at least one radiating feature of the first waveguide flange. The at least one radiating feature is located on a surface of the first waveguide flange that is perpendicular to the propagation direction. Additionally, when operating in a second mode, the apparatus conducts at least a portion of the electromagnetic energy from the first waveguide to a subsequent element (e.g., a second waveguide). The at least one radiating feature is shorted to a portion of the subsequent element when operating in the second mode.

Abstract: The omnidirectional ultra-wideband antenna is a variant on a monocone antenna, particularly including a supplemental radiating element. The omnidirectional ultra-wideband antenna includes an electrically conductive conical surface having a vertex end and a base end, and a supplemental radiating element having a first portion and a second portion. The first portion extends from the base end of the electrically conductive conical surface, the first portion being positioned between the base end of the electrically conductive conical surface and the second portion. The vertex end of the electrically conductive conical surface is positioned adjacent to, and spaced apart from, a first surface of a ground plane plate. At least one electrically conductive rod is provided, a first end of the rod being secured to the second portion, and a second end of each rod being mounted on the first surface of the ground plane plate.

Abstract: A multi-polarized continuous transverse stub (CTS) antenna includes a first feed network operative to at least one of receive or transmit a signal having a first polarization, and a second feed network different from the first feed network and operative to at least one of receive or transmit a signal having a second polarization different from the first polarization. At least one parallel-plate region is defined by a first plate structure and a second plate structure spaced apart from the first plate structure, where a first coupling structure connecting the first feed network to the parallel-plate region and a second coupling structure connecting the second feed network to the parallel-plate region. A common aperture is arranged on one side of the parallel-plate region, wherein wavefronts produced by the first and second coupling structures and propagated within the parallel-plate region radiate to free-space through the common aperture.

Abstract: A radio frequency (RF) module may comprise: (a) a substrate including a plurality of integral waveguides formed therein, each of the plurality of waveguides orthogonally-oriented with respect to the one or more adjacent waveguides; and (b) a plurality of antenna radiator elements attached to the dielectric substrate and oriented such that a pair of antenna radiator elements is electrically coupled to one of the plurality of waveguides. Each of the integral waveguides is electrically coupled to electrical circuitry of the RF module.

Abstract: A mounting base (14) is fixed to an antenna (13) or an antenna bracket (15) for supporting the antenna (13). A baseband unit (11) and an RF unit (12) are fixed to the mounting base (14). The baseband unit (11) fixed to the mounting base (14) is disposed to face a back part (132) of the antenna (13) and to form a space between the back part (132) and the first enclosure (111). The RF unit (12) fixed to the mounting base (14) is disposed in the space formed between the back part (132) of the antenna (13) and the baseband unit (11) and is coupled to a waveguide flange (132) of the antenna (13). Thus, for example, in a configuration of a point-to-point wireless apparatus in which an RF unit and a baseband unit are separated, restrictions on installation space of the apparatus can be facilitated.

Abstract: Microelectronic package communications are described that use radio interfaces that are connected through waveguides. One example includes an integrated circuit chip, a package substrate to carry the integrated circuit chip, the package substrate having conductive connectors to connect the integrated circuit chip to external components, and a radio on the package substrate coupled to the radio chip to modulate the data over a carrier and to transmit the modulated data. A waveguide connector is coupled to a dielectric waveguide to receive the transmitted modulated data from the radio and to couple it into the waveguide, the waveguide carries the modulated data to an external component.

Abstract: Aspects of the subject disclosure may include, for example, a system for receiving a first electromagnetic wave supplied by a dielectric antenna in a first position, where the first electromagnetic wave propagates along an outer surface of a feedline of the dielectric antenna, receiving a second electromagnetic wave supplied by the dielectric antenna in a second position, where the second electromagnetic wave propagates along the outer surface of the feedline of the dielectric antenna, measuring a ratio of a first signal strength of the first electromagnetic wave and a second signal strength of the second electromagnetic wave, detecting that the ratio is below a threshold, and adjusting an operational characteristic of a system to increase the ratio. Other embodiments are disclosed.

Abstract: A band latch mechanism that is configured to connect a wristband to a fitness tracker is provided. The band latch mechanism may be configured to be inserted into a cavity of a housing of the fitness tracker and configured so that any metallic body of the band latch mechanism does not contact metallic surfaces of the cavity in order to prevent an electrical ground from being positioned within a keep-out zone of an antenna of the fitness tracker. A housing with integrated antenna structures is also disclosed.

Abstract: The present disclosure provides a polarized antenna including a waveguide power divider, a waveguide phase shifter and a radiating unit. The waveguide power divider is configured to have an input waveguide for receiving a transmission signal, and first and second output waveguides for distributing and outputting the transmission signal. The waveguide phase shifter is configured to receive two output signals outputted respectively from the first and second output waveguides of the waveguide power divider, to variably change a phase difference between the two input signals, and to output respective changed signals. The radiating unit is configured to receive the respective changed signals from the waveguide phase shifter, and to combine and radiate the respective changed signals as a radio signal.

Abstract: A photonic modulator is provided that includes a transducer element that receives a RF input signal and converts the RF input signal into an elastic wave. One or more optical waveguides receive the elastic wave that has propagated a specified distance through an acoustic delay line. The one or more optical waveguides perform optomechanical transduction on the elastic wave in the presence of an optical wave, which produces one or more scattered optical waves. An optical circuit sums the one or more scattered waves to produce an optical signal output.

Abstract: An antenna includes a horn including an axial waveguide and a circular radome including a central cavity. The circular radome is configured to protrude into the axial waveguide. The antenna further includes a coil element provided over a coil frame and configured to fit inside the central cavity. The horn includes a conical structure having multiple circular chokes that are configured to shape a beam of the antenna to provide a desired gain by reducing sidelobes.

Abstract: Antennas suitable for use in compact radio frequency (RF) applications and devices, and methods of fabrication thereof. Described are resonator antennas, for example dielectric resonator antennas fabricated using polymer-based materials, such as those commonly used in lithographic fabrication of integrated circuits and microsystems. Accordingly, lithographic fabrication techniques can be employed in fabrication. The antennas have metal inclusions embedded in the resonator body which can be configured to control electromagnetic field patterns, which serves to enhance the effective permittivity of the resonator body, while creating an anisotropic material with different effective permittivity and polarizations in different orientations.

Abstract: A method for beam forming includes providing multiple instances of holographic metasurface antennas (HMAs), a reference wave source coupled to the HMAs, and a hologram function for each of the HMAs; combining the object waves of the plurality of HMAs, generated in response to the reference wave, to produce a composite beam; and modifying a phase angle of the object wave from one or more of the HMAs by modifying the hologram function of the one or more HMAs in order to modify the composite beam.

Abstract: Wireless communication is facilitated via communication assembly apparatuses. A system includes: a wireless gateway device located within a housing and having electrical connection elements for power and network connectivity; and an antenna coupled to the housing and electrically coupled to the wireless gateway device. The housing is adapted to be masked on a surface of a support structure exposed to a defined environment, and is configured to serve a first function and the support structure is configured to serve a second function. The first function is distinct from the second function. In various embodiments, the antenna can be a resonant slot antenna, a horn antenna, a dipole antenna, a patch antenna or a custom antenna element. The wireless gateway device can include circuitry that facilitates multiple-input and multiple-output communication of the antenna, and is configured to be powered via power over Ethernet in some embodiments.

Abstract: An antenna is provided from a dielectric wedge waveguide having an AMC wall feed structure 15 coupled thereto through a transition which matches the impedance of the AMC feed structure to dielectric wedge so as to ensure efficient transmission of RF signals between the AMC wall feed structure and the dielectric wedge. In some embodiments, the antenna may be implemented as a flush mounted or conformal antenna on an outer surface of a supporting platform.

Abstract: An antenna includes a plurality of superconducting quantum interference device (SQUID) arrays on a chip, and a printed circuit board (PCB) formed with a cutout for receiving the chip. The PCB is formed with a set of coplanar transmission lines, and the chip is inserted into the cutout so that each said transmission line connects to a respective SQUID array. A cryogenic system can cool the chip to a temperature that causes a transition to superconductivity for the SQUID arrays. A thermal radome can be placed around the chip, the PCB and the cryogenic system to maintain the temperature. A DC bias can be applied to the SQUID arrays to facilitate RF detection. The SQUID array, chip and CPW transmission lines can cooperate to allow for both detection of said RF energy and conversion of said RF energy to a signal without requiring the use of a conductive antenna dish.

Abstract: Antenna arrangement for a fill-level measuring device for ascertaining and monitoring a fill level of a medium in a container by means of a microwave, travel-time measurement method, comprising a horn antenna having a horn shaped component for focusing microwaves and a microwave transmissive, process isolating element, which is provided in the region of the exit opening of the horn shaped component facing the medium and which isolates the interior of the horn shaped component from the interior of the container. There is provided for additional focusing of the microwaves a lengthening component, which lengthens the horn shaped component in the radiated direction of the microwaves. The process isolating element is embodied and arranged in such a manner that it isolates the horn shaped component and the lengthening component galvanically from one another.

Abstract: The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long Term Evolution (LTE). The present invention relates to an antenna structure for signal radiation in a transmission device. An apparatus for signal radiation includes a feeding unit configured to radiate a signal, and a guiding unit, that consists of a plurality of elements physically spaced from one another, configured to adjust a radiation pattern of the signal radiated by the feeding unit by generating a radio wave in a Transverse Electric (TE) mode. Further, the present invention also includes embodiments different from the above-described embodiment.

Abstract: A waveguide device includes a first electrically conductive member having a first electrically conductive surface; a second electrically conductive member having a second electrically conductive surface which opposes the first electrically conductive surface; and a ridge-shaped waveguide member on the second electrically conductive member. The second electrically conductive member has a throughhole which splits the waveguide member into first and second ridges. The first and second ridges each have an electrically conductive end face, the end faces opposing each other via the throughhole. The opposing end faces and the throughhole together define a hollow waveguide. The hollow waveguide is connected to a first waveguide extending between the waveguide face of the first ridge and the first electrically conductive surface, and to a second waveguide extending between the waveguide face of the second ridge and the first electrically conductive surface.

Abstract: A mounting base (14) is fixed to an antenna (13) or an antenna bracket (15) for supporting the antenna (13). A baseband unit (11) and an RF unit (12) are fixed to the mounting base (14). The baseband unit (11) fixed to the mounting base (14) is disposed to face a back part (132) of the antenna (13) and to form a space between the back part (132) and the first enclosure (111). The RF unit (12) fixed to the mounting base (14) is disposed in the space formed between the back part (132) of the antenna (13) and the baseband unit (11) and is coupled to a waveguide flange (132) of the antenna (13). Thus, for example, in a configuration of a point-to-point wireless apparatus in which an RF unit and a baseband unit are separated, restrictions on installation space of the apparatus can be facilitated.

Abstract: An antenna may include a reflector and a multi-band feed assembly. A support member may be coupled to the multi-band feed assembly to orient the multi-band feed assembly for direct illumination of the reflector. The multi-band feed assembly may include first and second feeds, each having a respective septum polarizer coupled between a respective common waveguide and a respective pair of waveguides. A housing of the support member may contain the respective septum polarizers and the respective pairs of waveguides.

Abstract: Devices and systems, and methods of using them, for point-to-point transmission/communication of high bandwidth signals. Radio devices and systems may include a pair of reflectors (e.g., parabolic reflectors) that are adjacent to each other and configured so that one of the reflectors is dedicated for sending/transmitting information, and the adjacent reflector is dedicated for receiving information. Both reflectors may be in a fixed configuration relative to each other so that they are aligned to send/receive in parallel. In many variations the two reflectors are formed of a single housing, so that the parallel alignment is fixed, and reflectors cannot lose alignment. The device/systems may be configured to allow switching between duplexing modes. These devices/systems may be configured as wide bandwidth zero intermediate frequency radios including alignment modules for automatic alignment of in-phase and quadrature components of transmitted signals.

Abstract: An antenna module is disclosed. The antenna module is applied to a mobile communication device and includes a first radiating element and a second radiating element. The first radiating element is disposed on a base board inside the mobile communication device, and one point of the first radiating element is a feed point of the antenna module. The second radiating element is disposed on the base board and is grounded by connecting to a P-sensor inside the mobile communication device. There is a gap between one part of the second radiating element and the first radiating element.

Abstract: According to one aspect, a radar-radiometric imaging method is disclosed that includes cyclical observation, with a time period T, of a selected space section due to antenna beam rotation with a period Ta (Ta?T) around a rotation axis misaligned with the antenna's beam axis, along with the simultaneous change of the spatial orientation of this rotation axis using an antenna positioning device to ensure survey of the selected space domain for the time T without gaps.

Abstract: A horn (12) for elementary antennas for telecommunications, in particular satellite telecommunications, characterized in that the horn (12) includes a first emitting-receiving portion (22) adapted to emit and receiving an electromagnetic wave at a first frequency and a second emitting-receiving portion (24) adapted to emit and receiving an electromagnetic wave at a second frequency, the second emitting-receiving portion (24) being distinct and separate from the first emitting-receiving portion (22) and the ratio between the second frequency and the first frequency being greater than 1.2, preferably greater than 1.5.

Abstract: According to an embodiment, there is provided a leak preventing device of electromagnetic wave, including a metal pipe and a magnetic material part. The metal pipe is arranged to surround a periphery of a first electric power transmission device. The first electric power transmission device wirelessly transmits electric power to a second electric power transmission device via an electromagnetic wave. The second electric power transmission device is opposed to the first electric power transmission device. An opening is formed on the metal pipe along a circumferential direction of the metal pipe. The magnetic material part is arranged within the metal pipe along the circumferential direction the metal pipe.