Abstract: The present disclosure is directed to a dual polarized antenna array including a first BAVA (a horizontal polarization input), a second BAVA (a vertical polarization input), and a cradle assembly. The substrates of the first and second BAVAs each include a notched portion. The cradle assembly includes a base plate having four channel modules connected thereto. Edge portions of the substrates of the first and second BAVAs are received by the cradle assembly via channels of the channel modules and apertures of the base plate. The substrates of the BAVAs are interleaved via their notched portions so that the substrate of the second BAVA is an orthogonal orientation relative to the substrate of the first BAVA.

Abstract: A dual-polarized antenna array is disclosed. The antenna array includes a plurality of self supporting, electrically conductive members. Tapered elements of neighboring electrically conductive members define tapered slots that form part of radiating structures. The radiating structures additionally include a slot line in communication with the tapered slot. A back cavity can be included as part of a BALUN structure that is integral to an electrically conductive member.

Abstract: An apparatus, system, and/or method for a single planar feeding structure or antenna that may be integrated with one or more other system blocks is provided. The antenna may provide high radiation gain due to a large number of the radiating elements, which may be represented by one or more periodic openings or slots in a partially reflective surface (PRS). A feed network for the antenna may be provided by a wave bouncing between a ground plane and the PRS. The feed may be substantially in air, thereby suffering little to no loss. The fabrication process and/or method for the antenna is simple and low-cost. In one embodiment, the antenna may be formed at least in part by micromachining. The antenna may be designed at least in part using the Fabry-Pérot Cavity (FPC) method.

Abstract: An antenna array formed of individual electrically connected pluralities of wideband antenna elements. The array features a centrally located rectangular ground plane having a top surface defined by four edges. Each of said pluralities of elements is engaged to a separate substrate which is engaged along one of the four edges. The substrates may be angled to adjust the footprint of the antenna.

Abstract: An antenna using a slot formed by assembling a mobile terminal case and a metal structure (e.g., a bracket), is disclosed. The antenna reduces deterioration of antenna performance resulting from frequency interference or electromagnetic interference. The antenna can be used in various frequency bands.

Abstract: An antenna structure including at least two stacked antenna apertures, a first antenna aperture with first antenna elements and at least a second antenna aperture with second antenna elements. The antenna structure is arranged for operation in at least a high and a low frequency band. The first antenna elements are arranged for operation in the high frequency band and the second antenna elements for operation in the low frequency band. The first antenna elements are arranged to have a polarization substantially perpendicular to the polarization of the second antenna elements. The second antenna elements are arranged in at least one group and each of the group includes a number of second antenna elements coupled in series and arranged to have a common feeding point on a straight feeding structure. One feeding structure is located adjacent to each group of second antenna elements. The direction of the feeding structure is substantially perpendicular to the polarization of the first antenna elements.

Abstract: The present invention relates to a compact slot antenna formed, in a multilayer substrate comprising, in order, at least one first conductive layer, a first dielectric layer, a second conductive layer, a second dielectric layer and a third conductive layer, of a first slot-line realised in the second conductive layer, said first slot-line being connected to the supply of the antenna, of a second and a third slot-lines realised respectively in the first and in the third conductive layers, the second and third slot-lines each being delimited by two conductive strips of which a first extremity, supply side, is interconnected by a via passing through a window realised in the second conductive layer and a second extremity connected to the second conductive layer, both conductive strips on the side of the second extremity being, either in open circuit, or in short circuit, the electrical length of the first, second and third slot-lines being a function of the wavelength at the operating frequency of the antenna.

Abstract: An antenna apparatus comprises selectable antenna elements including a plurality of dipoles and/or a plurality of slot antennas (“slot”). Each dipole and/or each slot provides gain with respect to isotropic. The dipoles may generate vertically polarized radiation and the slots may generate horizontally polarized radiation. Each antenna element may have one or more loading structures configured to decrease the footprint (i.e., the physical dimension) of the antenna element and minimize the size of the antenna apparatus.

Abstract: A dual-band antenna utilized in a wireless communication device for receiving or transmitting wireless signals of a first frequency band and a second frequency band includes a rectangular metal plane formed with a slot structure substantially extending from a first side to a second side of the rectangular metal plane, a feeding terminal formed on the rectangular metal plane, and a grounding element, disposed on a third side or a fourth side of the rectangular metal plane, for electrically connecting the rectangular metal plane and a system ground of the wireless communication device, wherein the first side is substantially parallel to the second side, the third side is substantially parallel to the fourth side, and the first side is substantially perpendicular to the third side or the fourth side.

Abstract: A system and method for providing communications service to individual units of a multiple dwelling unit (“MDU”) is disclosed. The system may comprise a communications service unit configured to distribute communications signal to at least one unit of a MDU via at least one cable, wherein the at least one cable are distributed along the exterior of the MDU, one or more network interface elements communicatively coupled to the at least one cable, wherein each of the one or more network interface elements are positioned near a window of the MDU, and an antenna communicatively coupled to each of the one or more network interface elements, wherein the antenna is configured to transmit the communications signal to one or more network elements in at least one unit of the MDU.

Abstract: A dual-band antenna is disclosed including: a first antenna comprising: a first radiating portion including a plurality of separated radiating strips positioned on a first plane of a circuit board; a second radiating portion including a plurality of separated radiating strips positioned on a second plane of the circuit board; and a plurality of vias for coupling the plurality of radiating strips on the first plane with the plurality of radiating strips on the second plane to form a spiral radiating body; a second antenna having a radiating plane coupled with the first radiating portion or the second radiating portion; a shorting element coupled with the radiating plane and shared by the first and second antennas; and a feeding element coupled with the radiating plane and shared by the first and second antennas; wherein the width of part of the radiating plane gradually increases along a direction.

Abstract: A broadband antenna element for RF transmission and reception over cellular frequencies. The antenna element is formed of conductive material on a substrate surface of conductive material in the form of a pair of half portions extending in opposite directions to distal tips defining the widest distance of a mouth of a cavity. The mouth converges to reduce in cross-section to a narrowest point at a plurality of different flare angles defined by the edges of the two half portions in between the pair of half portions forming the element. The resulting antenna element radiates and receives a wide band cellular frequencies enabling a single element to serve different providers operating on different frequency bands in the cellular spectrum between 680 MHz to 1900 MHz.

Abstract: A multimode antenna structure is described for a communications device. The communications device includes circuitry for processing signals communicated to and from the antenna structure. The antenna structure is configured for optimal operation in a given frequency range. The antenna structure includes a plurality of antenna ports operatively coupled to the circuitry, and a plurality of antenna elements, each operatively coupled to a different one of the antenna ports. Each of the plurality of antenna elements is configured to have an electrical length selected to provide optimal operation within the given frequency range. By way of one or more connecting elements, electrical currents on one antenna element flow to a connected neighboring antenna element and generally bypass the antenna port coupled to the neighboring antenna element.

Abstract: According to one embodiment, an antenna device is provided with a dielectric substrate whose both surfaces are covered by first and second metal films, a via-hole row in which via-holes are arranged in two rows on the dielectric substrate, and a waveguide line is formed by the first and the second metal films, and a slot pair provided in the first metal film. The slot pair has a first slot and a second slot provided so that a slot length direction is oblique to a line direction of the waveguide line. A center of the first slot and a center of the second slot are spaced apart from each other by not less than a half of the shorter one of the slot length of the first slot and the slot length of the second slot along the slot length direction.

Abstract: According to one embodiment, a wireless device includes a circuit board, a semiconductor chip, a nonconductive layer, and a conductive film. The semiconductor chip includes a transmitting/receiving circuit and is mounted on the circuit board. The nonconductive layer is to seal the semiconductor chip. The conductive film is to cover a surface of the nonconductive layer, the conductive film being provided with a plurality of apertures serving as radiating elements. At least one aperture of the plurality of apertures is fed with power.

Abstract: A system and method for controlling azimuth beamwidth in a wide band antenna array, the system including radiating element(s) disposed above a ground plane and parasitic element(s). The parasitic element(s) include a slot formed therein, the parasitic element(s) and slot(s) configured to control beamwidth across a specific frequency range. The parasitic element(s) and the slot(s) may be configured to control beamwidth across contiguous or non-contiguous frequency ranges.

Abstract: Provided herein are devices, systems and techniques for establishing a variable height conformal antenna array having a planar backplane. More particularly, positioning of radiating elements can be made insensitive to variable ground height by selecting a suitable radiating element, such as a flared notch and arranging them to have a profile such that their outer extremities are positioned along a conformal, curved shape. Differences in radiator heights can be taken up by the addition of parallel vertical ground planes disposed between the radiating elements and the backplane. Adjacent vertical ground planes effectively form cutoff waveguide sections that naturally isolate the backplane from the radiating elements. The vertical ground planes edges effectively form a virtual curved ground for the radiating elements, following curvature of the array profile. Accordingly, heights of radiating elements are uniform with respect to the virtual ground, while being allowed to vary with respect to the backplane.

Abstract: The embodiments described herein are directed to providing a notched antenna element for improving polarization control without sacrificing gain, bandwidth, scan volume, recurring cost, or manufacturability. The notched antenna element includes a base portion comprising a plurality of contiguous first cross-sectional notched antenna elements, each of the plurality of first cross-sectional notched antenna elements configured in an end-loaded structure for increasing polarization stability; and an upper portion coupled to the base portion, the upper portion comprising a plurality of contiguous second cross-sectional notch antenna elements.

Abstract: A wideband cavity-backed slot antenna includes an enclosure having a slot, a balun located proximate the slot, a feed extending through the enclosure to the balun, and a plurality of coupled lines proximate the balun and distal to a location at which the balun is coupled to the feed.

Abstract: Disclosed is an antenna device for a portable terminal, including a circuit board having a conductive layer attached on a surface, a first slit formed by partially removing the conductive layer in a position adjacent to one side of the circuit board, the first slit extending in parallel with a lateral periphery of the circuit board, a radiation portion comprising part of the conductive layer positioned on the lateral periphery of the circuit board in one side of the first slit, and a feed line placed on the first slit and adapted to feed the radiation portion from the other side of the first slit. The radiation portion further comprises a second slit extending from the first slit to the lateral periphery of the circuit board across part of the conductive layer forming the radiation portion, and a frequency adjustment element placed on the second slit.

Abstract: An antenna apparatus and method includes an orthogonal slot antenna which overcomes the limitations associated with RF choke between the adjacent slots through various feed techniques. A cavity backed cross-slot antenna includes a horizontal slot antenna, a vertical slot antenna sharing a center portion with the horizontal slot antenna, a first feed for the horizontal slot antenna, and a second feed for the vertical slot antenna, the first feed and the second feed provided to the shared center portion. Another cavity backed cross-slot antenna includes a horizontal slot antenna, a vertical slot antenna, the horizontal slot antenna and the vertical slot antenna share a center portion therebetween, a first feed feeding both halves of the horizontal slot antenna, and a second feed feeding both halves of the vertical slot antenna.

Abstract: A wireless communication device includes a housing and an antenna assembly. The antenna assembly includes a base board, a feed member electronically connecting with the base board to carry an electrical current, and a radio member including a first radio portion, the first radio portion defining a first slot. The radiator couples with the feed member, inducing an electrical current in the first radio portion. The radio member is electronically connected to the base board through the metal housing, enabling the induced electrical current to flow through the first radio portion, the metal housing, and the base board to form a current loop. The induced electrical current flows through the first slot to excite a first resonance mode, enabling the antenna assembly to receive/transmit a first wireless signal.

Abstract: This antenna unit comprises an antenna having a radiating front surface, a back surface and a lateral outline having at least one electric field reinforcing region. It is characterized in that it further comprises a device protecting the antenna from lightning, having an internal surface at least partially capping the lateral outline of said antenna by being in electrical contact with said lateral outline, said internal surface covering the or each electric field reinforcing region, said protecting device having a curved external surface opposite said internal surface.

Abstract: A mobile communications device having a patch antenna which has defined therein at least two slots each having two or more parts. The at least two slots may include an L-shaped slot and a C-shaped slot, wherein the slots can be open or closed. The L-shaped slot may be an open-slot projecting into the patch antenna from the edge. Ground and signal connections may be at the edge of the patch on either side of the L-shaped slot. The C-shaped slot may be nested within the L-shaped slot.

Abstract: A metal pipe includes a slot having a predetermined length in a longitudinal direction of the metal pipe and a wireless tag that is placed inside the metal pipe and includes a power feeding unit to feed electric power to the slot and an IC chip connected to the power feeding unit, thereby functioning as an antenna of the wireless tag. The metal pipe is thus managed by the wireless tag.

Abstract: A dual polarized waveguide slot array includes a first waveguide and a second waveguide. The first waveguide includes major and minor cross-sectional axes and extends along a common longitudinal axis. The first waveguide further includes a plurality of slots disposed thereon for radiating or receiving signals of a first polarization. The second waveguide is coupled to the first waveguide, extending along the common longitudinal axis and having major and minor cross-sectional axes. The major cross-sectional axis of the second waveguide oriented substantially orthogonally to the cross-sectional axis of the first waveguide, and the second waveguide includes a plurality of slots disposed thereon for radiating or receiving signals of a second polarization substantially orthogonal to the first polarization.

Abstract: An antenna element employable singularly or in an array and configured for concurrent RF transmission and receipt on a plurality of frequencies concurrently. The element is formed of conductive material on a substrate by a pair of substantially identical horns extending in opposite directions to distal tips. A cavity formed between the horns narrows to a narrowest point prior to curving. The element is capable of wideband RF communication on any frequency between a low frequency defined by the distance between the distal tips to a highest frequency defined by the narrowest point of the cavity. The antenna is especially well adapted for portable devices such as smartphones where concurrent cellular, Wi-Fi, and bluetooth communications may be accomplished with a single element.

Abstract: An antenna is provided and includes a radiator aperture assembly including a plurality of radiator sticks, each radiator stick including a row of radiating elements configured to transmit and receive RF energy and a body having opposite sides, conductive elements coupled to the radiating elements and a plate disposed proximate to the radiator aperture assembly through which the conductive elements extend. Complementary opposite sides of the respective bodies of adjacent radiator sticks and a surface of the plate are configured to form a slot radiator.

Abstract: The invention relates to an array antenna (1), comprising a first plate (2), which has means for distributing an electromagnetic signal to be emitted by the array antenna (1), a second plate (3), which has first openings (7) for conducting the electromagnetic signal to be emitted therethrough, and a third plate (4), which has means (12) used to emit the electromagnetic signal. The second plate (3) is arranged between the first plate and the third plate (2, 4) and is operatively connected to same. The second plate (3) has substantially plane-parallel, smooth lateral surfaces (5, 6), in which the first openings (7) are arranged.

Abstract: Electronic devices may be provided with antennas. The antennas may include conductive antenna cavities. Antenna resonating elements may be mounted in the antenna cavities to form cavity antennas. An antenna cavity may be formed from metal structures with curved edges that define a curved cavity opening. A flexible printed circuit substrate may be coated with a layer of metal. Slot antenna structures such as a directly fed antenna slot and a parasitic antenna slot may be formed from openings in the metal layer. The flexible printed circuit substrate may be flexed so that the antenna resonating element forms a non-planar curved shape that mates with the opening of the antenna cavity. A ring of solder may be used to electrically seal the edges of the cavity opening to the metal layer in the antenna resonating element. The curved opening may be aligned with curved housing walls in an electronic device.

Abstract: Dual slot antennas are provided for portable electronic devices such as handheld electronic devices. A dual slot antenna may have an open slot that has an open end that is not encircled by conductive material and may have a closed slot in which each end is surrounded by conductor. The closed and open slots may have portions that run parallel to each other. The antenna may be fed using feed terminals that bridge the closed and open slots in the vicinity of the portions of the slots that run parallel to each other. The slots may have portions that are angled with respect to each other. An end portion of one of the slots may be bent and widened for impedance matching and broadened bandwidth. Other portions of the slots may also be angled with respect to their main longitudinal axes.

Abstract: This disclosure provides an antenna device that includes an electromagnetic wave radiation source for radiating an electromagnetic wave, and an electromagnetic wave shaping module, arranged forward of the electromagnetic wave radiation source, where a plurality of slot array rows each including a plurality of slots arranged in the horizontal direction are arranged in the vertical direction.

Abstract: Provided is a waveguide slot array antenna apparatus having a polarized wave plane in a direction oblique to a tube shaft of a waveguide, in which an excitation distribution of opening portions for radiating or receiving electromagnetic waves is appropriately attained.

Abstract: The Figures illustrate an apparatus 2 comprising: a conductive element 4 comprising an area of conductive material 5 defined by a plurality of edges 6, 7 including a first edge 7 wherein the conductive element 4 comprises an interior aperture 12 in the area of conductive material 5 and an elongate portion 20 defined by a gap 14 at the first edge 7 of the conductive element 4 and by at least a portion of the interior aperture 12. The apparatus 2 may comprise a further interior aperture in the area of conductive material and a second elongate portion defined by a second gap, by at least a portion of the interior aperture and by at least a portion of the further interior aperture.

Abstract: The present invention relates to a multi-sector radiating device intended to receive and/or transmit electromagnetic signals, comprising at least, arranged on a plane substrate: a first set of antennas, with: a first antenna, a second antenna, a third antenna, arranged in the opposite manner to the first antenna, a fourth antenna, arranged in the opposite manner to the second antenna, the antennas being longitudinal radiation slot type antennas, said antennas each presenting a bisector, wherein the radiating device comprises a switching circuit capable of activating one or more of the antennas, and notably all the antennas of the first set of antennas, -and in that the bisectors of the opposed antennas on the substrate are not combined.

Abstract: A mobile communications device is disclosed as having a patch antenna, which has defined therein at least two slots each having two or more parts. The at least two slots may include an L-shaped slot and a C-shaped slot, wherein the slots can be open or closed. The L-shaped slot may be an open-slot projecting into the patch antenna from the edge. Ground and signal connections may be at the edge of the patch on either side of the L-shaped slot. The C-shaped slot may be nested within the L-shaped slot.

Abstract: A THz antenna array has a plurality of THz antennae, a THz antenna having a photoconductive region and a first electrode and a second electrode which are arranged interspaced from each other via a spacer region that extends laterally across at least a part of the photoconductive region. In order to simplify the structure and facilitate its production, a lateral region between adjacent THz antennae of the array is not photoconductive. It is especially free from photoconductive material.

Abstract: An antenna for diversity operation comprising a plurality of connected antenna units (100). The antenna units each having a first radiation element (102) with length of a quarter of a wavelength at a first operating frequency a second radiation element (104) with length of a quarter of a wavelength at a second operating frequency distinct from the first operating frequency, the second radiation element sharing with the first radiation element a segment of the first radiation element. A feed point for coupling a feed to one of said first or second radiation elements such that the elements resonate at the first and second operating frequencies respectively and at substantially orthogonal polarizations. Diversity antennas configured with two or more of the antenna units.

Abstract: A dual band antenna providing a high forward gain includes a radiator, a director disposed in front of the radiator, and a reflector disposed behind the radiator. A dual resonance notch antenna including a conducting plate and a feeding portion is used as the radiator. The director includes a conducting plate and a short-circuiting portion and the reflector includes a conducting plate and a short-circuiting portion. Each conducting plate is disposed such that the direction of a normal to the conducting plate is a front-rear direction. Two slots having different lengths are formed in each conducting plate so as to be aligned with each other. The feeding portion is disposed in one of the slots. Each short-circuiting portion is disposed in one of the two slots at a position corresponding to the feeding portion.

Abstract: A panel array antenna has a waveguide network coupling an input feed to a plurality of primary coupling cavities. Each of the primary coupling cavities is provided with four output ports, each of the output ports coupled to a horn radiator. The waveguide network is provided on a second side of an input layer and a first side of a first intermediate layer. The primary coupling cavities are provided on a second side of the first intermediate layer and the output ports provided on a first side of an output layer, each of the output ports in communication with one of the horn radiators. The horn radiators are provided as an array of horn radiators on a second side of the output layer. Additional layers, such as a second intermediate layer and/or slot layer, may also be applied, for example to further simplify the waveguide network and/or rotate the polarization.

Abstract: A multi-service antenna may comprise: a support structure, a reflector mounted to the support structure, a signal processing assembly mounted with the support structure, a first wire strung between the reflector and the support structure and/or the signal processing assembly, and circuitry for processing a first signal received as a result of electromagnetic radiation (e.g., terrestrial television and/or cellular signals) incident on the first wire. The circuitry for processing the first signal may be housed in the signal processing assembly. A second wire may also be strung between the reflector and the support structure and/or the signal processing assembly, and the circuitry may be operable to perform diversity processing of signals received via the two wires.

Abstract: A multiple input-multiple output antenna assembly with high isolation between the antennas is disclosed. The antenna assembly includes a substrate with a ground layer at its surface. Two antennas are disposed opposing each other on the substrate. A meandering slot is interposed between the first and second antennas on the ground plane. A first signal port is provided for applying a first signal to excite the first antenna and a second signal port is provided for applying a second signal to excite the second antenna. The meandering slot provides isolation that inhibits electromagnetic propagation between the first and second antennas. A third signal port is provided for applying a third signal to excite the meandering slot to act as another antenna for multiple input, multiple output operation.

Abstract: Horizontally polarized and dual polarized antennas are described herein. In some examples, a horizontally polarized and dual polarized antenna may be mounted or operated with the physical vertical axis of the antenna being substantially perpendicular to a plane defined by the surface of the earth, and emanate an electric field that is parallel to the surface of the earth. The antenna may have a multi-slot aperture that reduces a variation in the far field omni-directional pattern. The antenna may have various cross-sectional configurations, and may have a radome at least partially surrounding the antenna and a supporting structure.

Abstract: A planar antenna comprising: a substrate, a resonant element generating an electromagnetic wave, a plurality of parallel, spaced apart conductive strips on the substrate, wherein conductive strips form collinear rows of at least two strips that are physically separated by a slot to guide the electromagnetic wave in a specific direction.

Abstract: The invention concerns a system of antennas on the same support. Each antenna is connected to a first port for the emission/reception in a first frequency band, and to a second port for the emission/reception in a second frequency band. The invention consists in a specific dimensioning of the support, such that the difference of the perimetric lengths separating the median points is a function of the half wavelength ?/2 modulo k ?, k positive integer, where ? is the wavelength corresponding to a working frequency fr.

Abstract: An antenna sheet includes a mounting section on which an integrated circuit (IC) chip electrically connected with an antenna pattern is mounted, a first loop forming section that extends from both ends of the mounting section that holds the IC chip therebetween and forms a first loop, an intersection portion in which at least parts of both forefronts of the first loop forming section intersect with each other, and a second loop forming section that extends from the forefronts of the first loop forming section that intersect in the intersection portion and forms a second loop outside the first loop.

Abstract: The present invention relates to panel array antennas, and more particularly to a cooling system for an antenna such as a jet stream conformal panel array antenna. In one embodiment, a panel array antenna for an aircraft includes a closed-loop fluid flow path that passes through the panel array assembly and dissipates heat to the jet stream outside the aircraft. A fluid such as pressurized air passes through this closed-loop path, flowing through strategically-placed openings in the layers of the panel array assembly and flowing over and around the hot electrical components in the panel assembly. The air is heated by these electrical components, and the heated air then flows through the flow path under the top sheet, dissipating the heat to the jet stream outside. In one embodiment, a panel array antenna includes a panel assembly having a top layer through which the antenna radiates or receives a signal, and a fluid flow path through the panel assembly.

Abstract: A multiple-band antenna having first and second operating frequency bands is provided. The antenna includes a first patch structure associated primarily with the first operating frequency band, a second patch structure electrically coupled to the first patch structure and associated primarily with the second operating frequency band, a first slot structure disposed between a first portion of the first patch structure and the second patch structure and associated primarily with the first operating frequency band, and a second slot structure disposed between a second portion of the first patch structure and the second patch structure and associated primarily with the second operating frequency band. A mounting structure for the multiple-band antenna is also provided. The mounting structure includes a first surface and a second surface opposite to and overlapping the first surface.

Abstract: Exemplary embodiments are provided of multi-band Planar Inverted-F antennas and antenna systems including the same. In an exemplary embodiment, a Planar Inverted-F antenna (PIFA) generally includes a planar radiator or upper radiating patch element having a slot. A lower surface of the PIFA is spaced apart from the upper radiating patch element. First and second shorting elements electrically connect the planar radiator to the lower surface. The PIFA also includes a feeding element electrically connected between the upper radiating patch element and the lower surface. The PIFA may be mounted on a ground plane that is larger than the lower surface of the PIFA.

Abstract: An antenna has an antenna body having a plurality of first antenna elements situated along a first straight line. The antenna body includes a first conductive grounded surface and a second conductive grounded surface, the first and second grounded surfaces being situated essentially parallel to one another. A dielectric is situated between the first and second grounded surfaces. A signal conductor is also situated between the first and second grounded surfaces. The first antenna elements are designed as apertures situated above the signal conductor in the first grounded surface. Furthermore, the antenna is designed to emit a signal in a direction in space, depending on a frequency of the signal. At least two of the first antenna elements differ from one another in such a way that their power emissions are different.