Abstract: A radio-frequency (RF) heat shield for electronics includes a first and second outer skin formed of an insulating material, an insulating core layer arranged between the first and second outer skin, wherein the insulating core layer has a lower dielectric constant as compared with a higher dielectric constant of the first and second outer skin, and a frequency selective surface (FSS) layer including a reflective metallization pattern that is RF transparent and formed on an exterior surface of each of the first and second outer skin.

Abstract: An RF antenna assembly and system are provided that can employ cost-effective geometry and manufacturing methods to control tolerance variations, thereby precisely controlling an antenna element of the RF antenna assembly during manufacturing and operation and enabling the RF antenna system to properly operate at high frequencies, such as in a 6-67 GHz frequency range. The RF antenna assembly can include a top alignment collar, a bottom alignment collar coupled to the top alignment collar by a press fit connection, and the antenna element secured from movement in all degrees of freedom and aligned for consistent RF operation by the top alignment collar and the press fit connection.

Abstract: A cover for a radar sensor, the cover comprising a plastic body and a foam material. The plastic body has a first surface and a second surface facing in an opposite direction to the first surface. The second surface includes a plurality of spaced-apart recesses formed in the second surface. The foam material at least partly contacts the second surface to prevent debris of water from entering the recesses.

Abstract: Included are: a waveguide in which multiple probe inserting holes are provided in a first wall surface, and multiple connection shaft inserting holes are provided in a second wall surface; multiple feed probes each of which is inserted in one of the probe inserting holes, and to a first end of each of which one of multiple circularly polarized element antennas is connected; multiple connection shafts each of which is inserted in one of the connection shaft inserting holes, and a third end of each of which is connected to a second end of one of the feed probes; multiple rotation shafts, a fifth end of each of which is connected to a fourth end of one of the connection shafts; multiple rotation devices each of which rotates one of the rotation shafts; and a control device that individually controls rotation of the rotation devices.

Abstract: A microwave antenna includes an antenna housing and a radome fabric attached to the housing, which is configured to pass microwave electromagnetic signals therethrough. The radome fabric has an opening formed therein. A vent component is attached to the radome fabric so as to cover the opening in the radome fabric when the radome fabric is viewed from an elevation view in a direction parallel to an axis extending through and perpendicular to the opening in the radome fabric. The vent component is configured to allow air to pass between the atmosphere and the antenna housing.

Abstract: A radome for a base station antenna comprises a cover and a bracket. The cover spans over radiators of the base station antenna. The cover includes a front wall, first and second side walls that extend rearwardly from the front wall, and first and second rear flanges that extend inwardly from the respective first and second side walls. The bracket includes a body and first and second mounting flanges that extend forwardly from the body. The first and second mounting flanges cooperate with the respective first and second rear flanges of the cover to connect the cover to the bracket. The radome has an aesthetic appearance, and reduces the possibility that a screw is loosened as a result of lateral wind forces.

Abstract: A radome wall for communication in a frequency band of from 17 to 31 GHz for use on commercial aircraft includes a multilayer structure having an alternating arrangement of force-absorbing solid cover layers and sheer-rigid core layers. The radome wall includes at least four of the cover layers, of which two form outer sides of the radome wall, the cover layers and the core layers being made of a dielectric material.

Abstract: A method of fabricating a monolithic feedboard assembly for a base station antenna, the method comprises injection molding a unitary frame that includes a feedboard section and at least one radiating element section and then selectively depositing metal on the unitary frame to form radio frequency transmission lines and radiators on the unitary frame to provide the monolithic feedboard assembly.

Abstract: A satellite dish cover apparatus for protecting a satellite dish and preventing signal interference includes a main dish cover comprising a circular front panel, a perimeter extension, and a rounded back panel. The back panel has an installation aperture configured to receive a satellite dish such that a front face of the satellite dish is fully covered by the front panel. A feed horn cover hood is coupled to a feed horn cover arm extending from the front panel and is configured to receive the feed horn of the satellite dish. A mounting arm is coupled to the back panel and extends out of the installation aperture. A mounting clamp is coupled to the mounting arm and is configured to selectively engage a support post of the satellite dish.

Abstract: An aircraft nose radome has a first portion that is transparent to X band microwave energy, and a second portion that is transparent to W band microwave energy. The second portion may be an insert that is secured to the radome at an opening formed therein. The insert may have a multi-layer structure with first, second and third layers, a fourth layer of foam between the first and second layers, and a fifth layer of foam between the second and third layers. The insert may include a plurality of spaced-apart, elongated reinforcing members or ribs between the first and second layers and between the second and third layers that extend along a longitudinal direction defined by the insert. The insert may have a serrated cross-sectional configuration.

Abstract: A method and apparatus are provided for nulling a radio frequency (RF) beam for a high-altitude platform (HAP). A transmitter generates an RF signal. A primary antenna system generates an RF beam based on the RF signal. One or more processors determine a result indicating whether to modify the RF beam. When the result indicates to modify the RF beam, a detachable nulling subassembly generates nulling signals based on the RF signal to modify the RF beam generated by the primary antenna system.

Abstract: A radio wave transparent cover is arranged in front of a radio wave radar device with a space in between in a radio wave emitting direction of the radio wave radar device such that radio waves emitted from the radio wave radar device pass through the inside of the radio wave transparent cover. A formation area, which includes the entire radio wave transparent area on the back side of the cover, is formed by an embossed uneven surface having an embossing depth of a range of 5 ?m to 200 ?m, inclusive.

Abstract: A home television antenna with a detachable bracket includes a casing, an antenna mainboard and a bracket. The antenna mainboard is disposed inside the casing and connected to a transmission line, and the transmission line extends to the exterior of the casing. The bracket is detachably connected to the casing for supporting the casing. By setting a bracket structure, the home television antenna can be supported and placed on the desktop to avoid impacts on signal transmission while being hung on a wall, and the antenna is conveniently placed on any plane without the need of construction on the wall for fixing the television antenna. The detachable connection between the bracket and the casing facilitates installation and disassembly, and it's convenient for transportation as the volume is reduced after the disassembly and it is convenient to install when the use is needed.

Abstract: An antenna device to be mounted to a vehicle roof, includes: a case unit having an accommodating space formed therein and having a radio wave permeability; and an antenna unit to be accommodated in the accommodating space, wherein the antenna unit has: a pair of capacitance loading elements facing across a plane, as a center, perpendicular to the vehicle roof at a predetermined interval and at a predetermined angle to each other; a coupling portion provided at a portion lower than an upper edge of the pair of the capacitance loading elements to conduct each of the pair of capacitance loading elements each other via each of the coupling portions; and a helical element electrically connected to the coupling portions.

Abstract: A vehicle decorative part includes a decorative main body and a heater. The decorative main body is configured to be attached to a vehicle at a front side in a transmission direction of millimeter waves from a millimeter wave radar and has a millimeter wave transparency. The heater has a heating element that emits heat when energized. At least a part of the heating element is located in an irradiation region of the millimeter waves in the heater. As a millimeter wave attenuation reducing configuration that reduces attenuation of the millimeter waves passing through the heater, the heating element is incorporated in the heater in a condition where an area proportion of an area of a section of the heating element that occupies the irradiation region to an area of the irradiation region is set such that an attenuation amount of the millimeter waves is less than or equal to a permissible value.

Abstract: A novel system and method for creating a lightweight antenna is disclosed. Each lightweight antenna is formed using a foam material. This foam material is coated with a machinable material, which is machined to the desired dimensions. The machinable material is then plated with a metal. This creates a radiator that has the size and performance of traditional notch antennas, but weighs far less. This foam radiator may be mounted to a variety of substrate types, not limited to microwave laminate materials. Embodiments of mixed substrates or even multi-layered foam substrates are possible. The substrate may be a conventional printed circuit board (PCB), a PCB with sleeved coaxial vias, or a foam substrate. The lightweight antenna may be used in a plurality of applications, including ultra-wideband array systems and space-based applications.

Abstract: A device for improving the aerodynamic feature of a projectile is disclosed. The projectile has a front part and a rear part. The external diameter of the front part of the projectile is larger than the external diameter of the front end of a rear part of the projectile. The front end of the rear part of the projectile is conical having larger diameter at locations behind the front end. The device comprises an annular cut-off cone sleeve slidably disposable over the front part of the projectile. The diameter of the narrower end of the annular cone sleeve is slightly larger than the diameter of the front part of the projectile and the length of the annular cut-off cone sleeve is larger than the distance between the front end of the rear part of the projectile and a location on rear part having a diameter equal to the diameter of the rear end of the annular cut-off cone sleeve.

Abstract: Cellular tower sites generally include a remote radio head conductively connected to a base station. A system for protecting the site from an electromagnetic pulse (“EMP”) includes an antenna array; an EMP detection circuit in communication with the antenna array; and a disconnect switch in communication with the EMP detection circuit. The disconnect switch is conductively connected between the remote radio head and the base station; when opened, it physically interrupts the connection between the remote radio head and the base station. For instance, if a comparison, within the EMP detection circuit, between the pulse duration and/or frequency of an electromagnetic signal received by the antenna array to the frequency and/or pulse duration of an EMP E3 signal component determines a match, the EMP detection circuit can output an EMP detection signal to the disconnect switch, thereby disconnecting the remote radio head from the base station.

Abstract: A mobile device includes a metal mechanism element, a feeding radiation element, a first radiation element, a second radiation element, and a dielectric substrate. The metal mechanism element has a slot. The slot has an open end and a closed end. The feeding radiation element has a feeding point. The first radiation element extends across the slot of the metal mechanism element. The feeding radiation element is coupled through the first radiation element to a ground voltage. The second radiation element is coupled to the feeding radiation element. The dielectric substrate is adjacent to the metal mechanism element. The feeding radiation element, the first radiation element, and the second radiation element are disposed on the dielectric substrate. An antenna structure is formed by the feeding radiation element, the first radiation element, the second radiation element, and the slot of the metal mechanism element.

Abstract: A mobile device includes a system circuit board, a metal frame, a first feeding element, a second feeding element, and an RF (Radio Frequency) module. The system circuit board includes a system ground plane. The metal frame includes a first portion and a second portion. The metal frame has a first cut point positioned between the first portion and the second portion. The first feeding element is directly or indirectly electrically connected to the first portion. A first antenna structure is formed by the first feeding element and the first portion. The second feeding element is directly or indirectly electrically connected to the second portion. A second antenna structure is formed by the second feeding element and the second portion. The RF module is electrically coupled to the first feeding element and the second feeding element, so as to excite the first antenna structure and second antenna structure.

Abstract: A portable common geometry non-linear antenna apparatus including a partially transparent housing defining a cavity, and a generally hemispherical antenna disposed within the cavity. The generally hemispherical antenna further includes an electrically conductive ground portion, an electrically conductive signal portion, an electrically insulating portion disposed between the electrically conductive ground and signal portions, and an electrically conducting mesh portion connected in electric communication with the signal portion. A first contact operationally connected to the ground portion and a second contact operationally connected to the signal portion. The electrically conductive mesh portion typically extends or bulges away from the electrically insulating portion to define a Faraday cage.

Abstract: A radome having localized areas of reduced radio signal attenuation includes a body having a first portion and a second portion. The first portion has a reduced radio signal attenuation property in a transmit band and a second portion has a reduced radio signal attenuation property in a reception band.

Abstract: A low profile, low loss, wide band, wide scan volume radome assembly is provided for an antenna. The radome assembly includes a fabric radome element disposable over the antenna, first radome securing elements securably embedded within the fabric radome element and second radome securing elements securably embedded within the antenna. The second radome securing elements are respectively engageable with the first radome securing elements to thereby secure the fabric radome element over the antenna.

Abstract: A package structure is provided. The package structure includes a substrate, a plurality of active components, a plurality of separated metal parts and an encapsulation material. The substrate has a first surface and a second surface. Each active component has a first surface and a second surface. Each metal part has a first surface and a second surface. The first surface of each active component is connected to the first surface of the substrate. The first surface of one metal part is connected to the second surface of one active component. Each metal part extends to connect to the first surface of the substrate. The encapsulation material covers the first surface of the substrate and surrounds the active components and the metal parts. The second surface of each metal part and the second surface of the substrate are exposed from the encapsulation material.

Abstract: A single-unit nose cone for a ram air including: a dome portion located at a forward end of the single unit nose cone; a dome stand portion adjacent to the dome portion; a seat portion adjacent to the dome stand portion; and a stem portion adjacent to the seat portion and located at an aft end of the single-unit nose cone, wherein the dome portion, the dome stand portion, the seat portion, and the stem portion are composed from a single piece of material having a density of about 0.286 pound/cubic inch (7916 kilogram/cubic meter).

Abstract: A stackable antenna enclosure is generally dome-shaped with a top and a side wall tapering inward from its base. An antenna and associated electronic components are mounted on the interior top surface of the enclosure. A series of enclosures can be stacked together for storage or shipment, but the side wall of the enclosure includes a number of stops that limit how far the enclosure can be inserted into the interior cavity of an adjacent enclosure to prevent the antenna and related electronic components from coming into contact with the top of the adjacent enclosure. For example, the stops can be a series of vertical ribs extending radially outward from the side wall of the enclosure. The upper ends of these ribs will abut the base of an adjacent enclosure when stacked and prevent contact against the antenna and related electronic components.

Abstract: Disclosed are a heat radiating sheet and a wireless power transmitting module including the same. A heat radiating sheet according to an exemplary embodiment of the present invention includes a plate-shaped heat radiating member having a predetermined area for radiating a heat generated from a heat source and a metallic protecting member, attached to a surface of the heat radiating member via an adhesive layer for protecting the heat radiating member in addition to for serving as an auxiliary heat radiating member.

Abstract: A method and system facilitate communication between a constellation of satellites and a mobile platform-mounted mobile communicator. The method and system may include the use of a first antenna suited for operation using a first frequency band in a first geographic region and a second antenna suited for operation using either the first or a second frequency band in a second geographic region. The method and system may use a controller to determine which antenna to activate based on one or more of a geographic indicator or a signal indicator. The system used by the method to facilitate the communication may have one or more enclosures over the antennas and controller for mounting to a mobile platform.

Abstract: A lighting-up device includes: a power supply circuit which supplies power to a light source; a wireless communication circuit including an antenna; and a metallic casing which includes metal, and houses the power supply circuit and the wireless communication circuit. The metallic casing has a first side face and a second side face which share a side, the first side face is provided with a first slit which extends in a first direction intersecting with the side, from a first portion of the side other than both ends of the side, the second side face is provided with a second slit which extends in a second direction intersecting with the side, from a second portion of the side other than the both ends of the side, and each of the first slit and the second slit is electromagnetically coupled to the antenna and functions as a slot antenna.

Abstract: A small antenna device having good communications performance and a wide communications area even when a metal plate is present in the antenna communications direction, even when the antenna is arranged, for example, inside a box-shaped metal case, and even when a through hole is used that has a smaller area than the antenna. This device comprises: the antenna; a rear surface cover overlapping with the antenna and being a conductor that faces the winding of the antenna; two first insulating areas provided in the rear surface cover and extending in a direction that intersects the winding axis of the antenna; and a second insulating area that connects between the first insulating areas. At least part of the area sandwiched by the first insulating areas faces the antenna.

Abstract: Unit cells for phased array antennas are described. The unit cells include a plurality of dipole antennas that are used to form a phased array antenna. In particular, the unit cells that form the phased array antenna each include a plurality of dipole antennas formed on a surface of a substrate that are arranged to collectively form a triangle. A plurality of the unit cells may be linked together to form a triangular lattice array having almost any desired size and aperture, thereby allowing the RF engineer the freedom to achieve a wide variety of performance goals when designing a phased array antenna.

Abstract: An antenna structure includes a housing, a first feed source, a first radiator, a second radiator, and a second feed source. The housing includes a first radiating portion. The first feed source feeds current to the first radiating portion and the first radiating portion activates a first mode to generate radiation signals in a first frequency band. The first radiator is positioned in the housing. The first radiating portion further couples the current to the first radiator and the first radiator activates a second mode to generate radiation signals in a second frequency band. The second radiator is positioned in a space formed by the first radiator. The second feed source feeds current to the second radiator and the second radiator activates a third mode to generate radiation signals in a third frequency band.

Abstract: An adaptive detection and nulling system includes an antenna or radio frequency aperture, an electronically tunable radome placed over the antenna or radio frequency aperture, the radome including a plurality of scatterers on a substrate, and one or more tunable reactance elements connecting at least two of the scatterers, a microcontroller coupled to the tunable reactive elements and configured to control the reactance values of the one or more tunable reactance elements, and a sensing circuit coupled to the microcontroller, wherein inputs from the sensing circuit are used by the microcontroller to adaptively determine bias voltages to the one or more tunable reactance elements using characterization data of the radome to control the tunable reactance elements to form one or more nulls in a receive radiation pattern of the antenna.

Abstract: A conical radiator coupled to an antenna patch disposed along a first end of the radiator, said patch disposed on an insulator. A ground plane is connected to the insulator and a radome is disposed opposite a second end of the radiator. The radome has a first region presenting a convex surface towards the radiator, and a second region presenting a concave surface towards the radiator. The first end of the conical radiator is the apex of the cone. A ground plane is included and a portion of the ground plane is a planar surface and another portion extends away from the planar portion towards the radome. Also disclosed is a method for forming a radiation pattern by shaping the radome to effectuate a predetermined radiation pattern using localized convex and concave surfaces positioned on the radome at different points in relation to the conical radiator.

Abstract: Techniques and mechanisms for providing a low-profile terminal for satellite communication. In an embodiment, a communication terminal includes a radome, an array of radio frequency (RF) elements and a foam layer disposed therebetween. The foam layer includes a first side and a second side opposite the first side, wherein the array of RF elements and the radome are coupled to the foam layer via the first side and the second side, respectively. The communication device provides contiguous structure between the radome and the array of RF elements. In another embodiment, the first side forms a machined surface which contributes to flatness of one or more antenna panels having the array of RF elements disposed therein or thereon.

Abstract: Mechanisms for providing inductance-based user interface elements are provided. Some implementations of such inductance-based devices may feature very small gaps between the housing and the inductive coil, as well as various features to aid in improving sensor sensitivity and reducing the possibility of false button-push events.

Abstract: A mobile device includes a dielectric substrate, a metal layer, a metal housing, a nonconductive partition, at least one connection element, and a feeding element. The metal layer is disposed on the dielectric substrate, and includes an upper element and a main element, wherein a slot is formed between the upper element and the main element. The metal housing is substantially a hollow structure, and has a slit, wherein the slit is substantially aligned with the slot of the metal layer. The connection element couples the upper element of the metal layer to the metal housing. The feeding element is coupled to the upper element of the metal layer or coupled to the metal housing. An antenna structure is formed by the feeding element, the upper element of the metal layer, the connection element, and the metal housing.

Abstract: Traditional configuration of infrastructure equipment relates to the adjustment of horizontal tilt for antennas. Given the potential overlap of infrastructure equipment, varying tilt angles can result in either interference with nearby equipment (“over-tilt”) or reduced coverage areas within a specific infrastructure equipment (“under-tilt”). A tool for determining appropriate tilt angles for infrastructure antennas across a mobile network is provided. The tool automatically determines a range of tilt angles between a selected source antenna and adjacent antennas and optimizes based on a threshold intersecting point. Additionally, the tool can update calculated tilt angles based on network congestion information.

Abstract: The present disclosure relates to the field of antenna technologies and, in particular, to an antenna system and a mobile terminal. The antenna system includes: a metal rear cover, a first feeding point, and a system ground, wherein a U-shaped slot is arranged at a bottom of the metal rear cover, and the U-shaped slot divides the metal rear cover into a radiation portion and a grounding portion, the grounding portion is connected to the system ground, the radiation portion includes a first end and a second end, and both the first end and the second end are connected to the grounding portion, a break is defined at the radiation portion, and the radiation portion is electrically connected to the first feeding point, so as to form a main antenna.

Abstract: The invention relates to a space frame radome comprising a sheet, said sheet comprising high strength polymeric fibers and a plastomer, wherein said plastomer is a copolymer of ethylene or propylene and one or more C2 to C12 alpha-olefin co-monomers and wherein said plastomer has a density as measured according to ISO1183 of between 860 and 940 kg/m3 and wherein the sheet has an areal density that is with at most 500% higher than the areal density of the high strength polymeric fibers.

Abstract: A technique of adjusting absorptivity of radar waves and emissivity of infrared waves by controlling the waves of the radar and infrared regions using a structure formed of a meta-material. A composite structure for controlling absorptivity and emissivity includes: a first anti-detection unit; and a second anti-detection unit stacked on the first anti-detection unit, wherein the first anti-detection unit is an absorber for absorbing electromagnetic waves of a first range input from an outside of the first anti-detection unit, and the second anti-detection unit is a selective emitter for selectively blocking emission of electromagnetic waves of a second range and selectively allowing emission of electromagnetic waves of a third range among electromagnetic waves that can be emitted to an outside of the second anti-detection unit.

Abstract: A terminal includes a metal frame body having: a top frame configured to receive a global positioning system (GPS) antenna; and a middle frame provided with a slot corresponding to the GPS antenna in position, wherein the top frame and the middle frame are electrically isolated from each other by a gap.

Abstract: A nozzle cap assembly can include a nozzle cap housing configured to mount on a hydrant, a nozzle cap cover mounted on the nozzle cap housing, an antenna cover positioned on the nozzle cap housing and secured by the nozzle cap cover, the nozzle cap housing, the antenna cover, and the nozzle cap cover can define an antenna cover cavity, and an antenna assembly can be positioned in the antenna cover cavity.

Abstract: A tri-band multiwell radome includes a dense polymeric strike plate that is configured on the outside of the radome, a capture layer and a tuning layer. The polymeric strike plate is a tough polymer, such as a polycarbonate and breaks a bullet into fragments that are more easily captured by the capture layer. The capture layer includes a number of fabric sheets of highly oriented fibers, such as polyethylene fibers, and a binder. The tuning layer may be a low density foam that is configured inside of the capture layer and provided to reduce reflective losses and improve ballistic performance. A tri-band radome cover may have a dB loss over a wavelength of 8 to 40 kHz of no more than 1 dB. A tri-band radome cover may be formed in a dome shape.

Abstract: Several embodiments are disclosed that provide for a frequency selective surface that can be placed like a radome on top of or under an existing radome or as a new radome on top of one or more radiating or receiving apertures or antennas to provide for a high-Q filter function to remove unwanted neighboring frequency interferences. The conformal structure comprises of an array of subwavelength electrically connected broken metallic rings and/or broken wires loaded with electromechanical resonators such as quartz or LiNbO3 crystal resonators, Bulk Acoustic Wave (BAW) resonators, and/or Surface Acoustic Wave (SAW) resonators at said breaks. When excited by an incident electromagnetic wave this collection of loaded rings and/or wires behaves as a filter which is capable of rejecting and/or passing frequencies over a narrow bandwidth.

Abstract: A shark fin antenna equipped with a V2X communication system which ensures high-efficiency performance in a moving vehicle, thereby wirelessly providing various frequency transmitting/receiving signals to a user's vehicle, an adjacent vehicle as desired by the user, and a pedestrian, whereby an integrated telematics service including a safety based service is provided. The shark fin antenna includes a fixing part arranged on which an antenna is installed within an applicable range of its internal space, produces an antenna similar to the form of the fixing part, thereby implementing a small-sized antenna and smoothly receiving signals of various bands due to favorable antenna gain and radiation pattern condition, and combines the antenna gain and radiation pattern condition while providing the forms of an antenna unit and an auxiliary unit, thereby flexibly responding to receiving signals of different bands according to use regions.

Abstract: An electromagnetic (EM) probe for monitoring at least one biological tissue. The EM probe comprises a spiral antenna conductor (not shown) and an EM radiation absorbing layer (92) mounted along the antenna. The EM radiation absorbing layer has a plurality of substantially concentric frame shaped regions (93A-C) corresponding to portions of said spiral antenna having equal surface of antenna conductor, any of said plurality of concentric frame shaped regions has an EM radiation absorption coefficient different than any other of said neighbouring concentric frame shaped regions.

Abstract: An electronic device is provided. The electronic device includes a housing including a segment part used to insulate a portion of the housing and an antenna disposed at a position corresponding to the segment part.

Abstract: A luminaire includes a light source having a light-emitting element, and a communication device configured to transmit and/or receive a communication signal by wireless communication. The luminaire further includes a power supply configured to supply electric power to the light source and the communication device, and a housing configured to contain the communication device and the power supply. The light source is configured to be held by the housing. The housing is provided with an opening. The housing has a rectangular parallelepiped shape with electrically conductive walls to form a rectangular waveguide having a cutoff frequency. The housing is set to have a dimension in a width direction thereof such that a radio frequency of the communication signal is equal to or more than the cutoff frequency.

Abstract: Embodiments of the present application relate generally to electronic hardware, computer software, wireless communications, network communications, wearable, hand held, and portable computing devices for facilitating communication of information and presentation of media. An electrically conductive substrate, such as a sheet of metal or metal alloy, for example, includes an active antenna formed by a slot or opening formed in the substrate, and also includes at least one separate passive slot or opening (e.g., a passive slit) formed in the substrate. The active antenna may be intentionally detuned from one or more target frequencies (e.g., 802.11, 2.4 GHz, 5 GHz) such that the active antenna is not optimized (e.g., is not tuned) for the one or more target frequencies. One portion of the active antenna may be electrically coupled with a ground potential. Another portion of the active antenna may be electrically coupled with a RF receiver, transmitter, or transceiver.