Abstract: An antenna operating at a frequency f is provided. The antenna includes an elongated shaft having a first end, a second end, a first member, a second member, and a third member, and an antenna sleeve surrounding at least a portion of the second member of the elongated shaft. The first, second, and third members are contiguous with each other, and the antenna sleeve is loaded with a dielectric material to shorten a length of the second member of the elongated shaft.

Abstract: There is provided an antenna device for RF tag communication including: a plate-shaped radiation element; and an antenna case body which contains the radiation element and has an indicating unit at a position corresponding to a region in which the field intensity of the electric field generated at the radiation element is the highest.

Abstract: Radomes include an outer wall having a first average thickness and an inner wall having a second average thickness that is different from the first average thickness. At least a major portion of the inner wall is separated from at least a major portion of the outer wall by a space therebetween. The outer wall may comprise a layer of ceramic matrix composite (CMC) material. Aircraft and spacecraft include such radomes. Methods of forming radomes include forming an outer wall having a first average thickness, forming an inner wall having a different second average thickness, and coupling together the inner wall and the outer wall in such a manner as to provide a space between at least a major portion of the outer wall and at least a major portion of the inner wall.

Abstract: Disclosed herein is a fractal antenna for a vehicle. First and second radiation elements are downwardly inclined from an apex ridge, and disposed opposite each other on the left and right sides inside a radome for protecting the antenna. First and second parasitic elements are formed in an inner space which is formed by the first and second radiation elements. Further, the first and second parasitic elements are disposed to be parallel to and spaced apart from the respective first and second radiation elements at regular intervals, are downwardly inclined from an apex ridge, and are disposed opposite each other on the left and right sides. The first and second radiation elements are respectively formed on part of the upper surface of a first substrate and part of the upper surface of a second substrate in patterns each having a predetermined shape.

Abstract: A method and apparatus for providing wireless communication and optionally power to the interior of a housing assembly is disclosed. In one embodiment, an antenna is molded within a gasket material, such as silicon, so as to be completely encapsulated. The gasket preferably includes at least one support arm, which holds the antenna toward the middle of the housing, so as to minimize interference from the metal housing. In further embodiments, an inductive coil is encapsulated in the gasket. An alternating current is passed through this coil to create a changing magnetic field, which can then be used to create electrical power in physically separate components, such as filtering elements. In certain embodiments, multiple loops are molded to correspond to multiple filtering elements within the housing.

Abstract: In certain embodiments, a structure for electronic components includes a baseplate having a substantially planar shape. The baseplate defines one or more openings allowing air flow. The structure includes a frame coupled to the baseplate. The frame includes a planar support with a substantially planar shape that is substantially parallel to the baseplate. Then planar support and baseplate at least partially defines one or more plenums. The planar support is also configured to support one or more transmit/receive integrated microwave modules. The frame also includes a plurality of frame supports that define one or more channels for air flow. Each channel corresponds to one of the plenums. Additionally, the frame includes a ventilated panel with a surface defining a plurality of air inlets. The air inlets allow air into one of the one or more plenums. Also, the frame includes one or more thermal interfaces configured to dissipate heat.

Abstract: In a waveguide structure (8), a movable waveguide component (10) and an immovable waveguide component (12) are opposed at a predetermined interval. Further, at least either the movable waveguide component (10) or the immovable waveguide component (12) includes grooves (13, 29) opened towards the waveguide component opposed thereto (10, 12). Protrusions (44) are formed outside of at least one of the grooves (13, 29). The protrusions (44) respectively have a height of roughly ?/4 (where ? is a wavelength of radio waves to be used).

Abstract: A method for determining the seam location for each layer of a multilayer radome for use with an array antenna includes the steps of quantizing the radome thickness, and forming an image of the quantized thickness vs. line array position. Seam locations are assigned for an original population, and a genetic algorithm is iterated to optimize a cost function. The cost function is the level of all sidelobes other than the main lobe. The result of the genetic algorithm is an optimized set of seam locations. The radome is built with the seam locations corresponding to the optimized locations.

Abstract: An antenna structure includes a radiating element and an antenna radome. The antenna radome has at least one dielectric layer, which has an upper surface having many S-shaped metal patterns and a lower surface having many inverse S-shaped metal patterns corresponding to the S-shaped metal patterns. The S-shaped metal patterns are respectively coupled to the corresponding inverse S-shaped metal patterns to converge radiating beams outputted from the radiating element.

Abstract: A structural grid is provided with continuous and discontinuous beam members coupled by splices, a front structure coupled to the structural grid, the front structure including a walkway and cables, a radome coupled to the front structure. The structural grid is coupled to a plurality of antenna subassemblies. The antenna subassemblies have a forward housing including an RF manifold coupled to a circulator, an aft housing coupled to the forward housing, containing a line replaceable unit that is serviceable or maintainable through the aft housing.

Abstract: Recovery of hydrocarbons, such as petroleum products, from a liquid or solid substrate is facilitated by the use of microwave energy to energize and separate molecular bonds between the hydrocarbons and the substrate. A radio frequency (RF) applicator delivers microwave energy to a treatment volume containing an emulsion of a hydrocarbon and a substrate. Delivering the microwave energy to the emulsion facilitates separation of the hydrocarbon and substrate molecules into layers. Hydrocarbons and other products can then be recovered from their respective layers. The treatment volume may be located either above or below ground. The RF applicator may include an antenna body with slots formed substantially parallel to one another in a substantially horizontal orientation. The RF applicator efficiently delivers microwave energy into the treatment volume. Substantially all of the power supplied to the RF applicator is radiated, with very little power reflected internally within the RF applicator.

Abstract: An antenna structure includes a radiating element and an antenna radome. The antenna radome has at least one dielectric layer, which has an upper surface having many S-shaped metal patterns and a lower surface having many inverse S-shaped metal patterns corresponding to the S-shaped metal patterns. The S-shaped metal patterns are respectively coupled to the corresponding inverse S-shaped metal patterns to converge radiating beams outputted from the radiating element.

Abstract: A system and method for utilizing a multi link antenna array for wireless links in conjunction with fiber MAN's is disclosed. The fiber MAN's are coupled to one or more multi-link antenna arrays. Each multi-link antenna array forms a plurality of point-to-point wireless links.

Abstract: The present invention provides an improved single, light weight, compact integrated multi-antenna system for simultaneous reception and transmission of energy at multiple different frequencies without interfering with each other. The system includes an enclosure having a shield positioned at about its midpoint for secure placement of a first antenna on the top of the shield and second antenna on the bottom of the shield. The shield is fabricated and positioned to provide both a secure placement of the antennas and to block or attenuate the frequency signals of the first antenna to reach the second antenna and vice versa. The system further includes an interface coupled between the first and the second antenna to share data signals among each other.

Abstract: The outdoor multi-channel antenna mainly contains a case, a reflection box, a reception plate, and a cover. The reflection box is placed inside the case. The reception plate has an antenna waveguide element and is placed inside the reflection box. The waveguide element is fixed and positioned by a support seat. The reception plate contains a curved piece and two wing pieces bended 90 degrees downward from the curved piece. The waveguide element is attached to a back side of the reception plate and is connected via a coaxial cable to a terminal threading through the through openings of the reflection box and the case. The cover tightly seals the case by a ring washer sandwiched therebetween and a waterproof plug sleeves over the terminal.

Abstract: A dual beam dual-selectable-polarization phased array antenna comprises an aperture unit, a printed wiring board, radiating elements, chip units, a pressure plate, and a rear housing unit. The printed wiring board has sub assemblies bonded to each other with a bonding material providing both mechanical and electrical connection. The printed wiring board is connected to the aperture unit. The radiating elements are formed on the printed wiring board. The chip units are mounted on the printed wiring board. The chip units include circuits capable of controlling radio frequency signals radiated by the radiating elements to form dual beams with independently selectable polarization. The pressure plate is connected to the aperture unit. The aperture unit is connected to the rear housing unit such that the aperture unit covers the rear housing unit.

Abstract: The invention as disclosed is of a buoyant cable antenna for use with underwater vehicles having improved bandwidth through the use of discrete distributed loading along the antenna. The buoyant cable antenna is designed with an antenna wire that is divided into N equal length segments of length d/2. A capacitor is coupled between every other segment such that capacitors are separated by a distance d. A shunt inductor is coupled to the antenna wire between the adjoining segments not separated by a capacitor such that the shunt inductors are separated by a distance d. This antenna design provides a substantially improved impedance bandwidth over existing prior art antennas at high frequency without increasing the physical profile of the antenna and without the use of active circuit elements.

Abstract: An antenna is provided, in combination with an associated switch array, the antenna comprising a number of antenna elements mounted above a ground plane for providing coverage over a predetermined range of angles in azimuth using a number of beams. Each of the antenna elements is connected to a switch in the switch array and the switch array is operable to connect selected pairs of the antenna elements to a signal path to thereby generate each of the different beams, at the same time connecting unselected antenna elements to ground.

Abstract: According to one embodiment, an electronic device includes a housing, a storage mechanism, a printed wiring board, an antenna element and a component. The storage mechanism and printed wiring board are accommodated in the housing. The antenna element is mounted on the printed wiring board and executes wireless communication. The component adversely affects the wireless communication by the antenna element. The printed wiring board includes a first surface which is opposed to the component, and a second surface which is located on a side opposite to the first surface. The antenna element is mounted on the second surface.

Abstract: Advanced RF therapeutic antenna probes, their systems and usage methods are disclosed. The therapeutic antenna probe comprising an RF power transmitting cable by which a dipole antenna assembly is formed and a sheath that includes the dipole antenna assembly therein. The RF power transmitting means comprises at least a central conductor, a cylindrical dielectric insulator formed around the central conductor and an outer conductor all of which are formed to be the dipole antenna assembly. A dipole antenna which is a member of the dipole antenna assembly is composed of the first and second electrodes which are formed by a part and another part of the outer conductor, respectively, and electrically connected to the one central conductor and an isolating means which is formed between the first and the second electrodes. The sheath is made of a hard material for at least a head element having a sharp edge.

Abstract: An electromagnetic wave filter apparatus includes: a shield conductor; a shield aperture provided in the shield conductor; a plurality of strip conductors, each of which is connected to the shield conductor at both ends thereof, and which divide the shield conductor into a plurality of apertures; and a plurality of stub conductors provided at intervals on each of the strip conductors. Each of the stub conductors prevents a current with a predetermined frequency from flowing through a corresponding strip conductor due to an electromagnetic wave with the predetermined frequency passing through the electromagnetic wave filter apparatus, and thus, the electromagnetic wave filter apparatus passes the electromagnetic wave with the predetermined frequency without exerting substantial influence on radiation of the electromagnetic wave with the predetermined frequency.

Abstract: There is provided an antenna element for use in an ultra wideband network, the antenna element comprising a radiating element, for radiating signals over a range of frequencies in response to a signal received at a feed point; and a frequency shaping device located near the feed point of the radiating element for acting as a broad-banding device for the radiating element. A plurality of antenna elements may be formed into an antenna array.

Abstract: A GPS reception arrangement includes a GPS radome body having an upper body portion, a lower body portion and a peripheral body portion between the upper body portion and the lower body portion and extending circumferentially there around, and a GPS antenna positioned inside the radome body. A plurality of light sources on the peripheral body portion of the radome body project light in a manner to identify the GPS radome, and distinguish it from other radomes. Retroreflective material is positioned around the radome body on the peripheral body portion, adjacent the plurality of light sources.

Abstract: A portable communication device including a casing having a front section and a back section is provided. The back section may at least partly made of an electrically conducting material. The casing also may enclose a ground plane and a radio circuit that is connected to a radiation receiving antenna element and the ground plane. The radiation receiving antenna element is provided in an area of electrically conducting material of the back section of the casing.

Abstract: A mounting device for an antenna device and its method for mounting, and removing the antenna utilizes a dock unit and a base unit. In addition to providing a mounting mechanism, the capture or mounting of the device incorporates a storage feature for the antenna cable to make it transportable. The apparatus provides a means for connecting an antenna to a housing, storing a cable in the housing, and capturing the housing to a docking mechanism while allowing for easy removal of the antenna, and cable storage feature.

Abstract: A satellite antenna device is provided. The satellite antenna device includes a body, a wave guide, and a dielectric member. The wave guide is connected to the body. The dielectric member is connected to the wave guide, wherein the dielectric member comprises a first portion and a second portion, the first portion has a protruding structure, the protruding structure is formed surrounding a central axis of the wave guide, the second portion has a concave structure, and the concave structure corresponds to the protruding structure, and is matched therewith.

Abstract: The invention relates to an antenna module comprising at least a first series of unitary radiating elements (ER1i), from a second series of unitary radiating elements (ER2i) facing the unitary radiating elements of the first series, so as to broaden the frequency band of said antenna module, characterized in that it further includes: a monolithic part made of dielectric material having a face supporting the first series of radiating elements and legs (P1i), the surfaces of which are conducting; a microwave dielectric circuit supporting the second series of radiating elements; and means for fastening the legs of the monolithic part to said microwave dielectric circuit, the monolithic part providing a radome function for the radiating elements.

Abstract: An enclosure for the open end of a reflector antenna includes a cylindrical shroud coupled to a distal end of the reflector antenna, the shroud generally coaxial with a longitudinal axis of the reflector antenna. A retaining band is coupled to an inner diameter of the shroud, proximate a distal end of the shroud. The retaining band is provided with a retaining groove open radially inward towards the longitudinal axis. The retaining groove provided with a bottom extending radially outward beyond an outer diameter of the shroud. A radome is seated within the retaining groove.

Abstract: The present invention aims to provide a hollow antenna tower structure for use in a wireless communications network. The tower comprises tubular tower sections made of concrete, and having a generally hollowed cross section. A movable base station unit, having at least one antenna and at least one micro wave link, is being disposed inside the tubular tower. The whole base station unit is movable up and down inside the tower by the aid of an elevator system. The tower further comprises at least one entrance into the tower and a climbing facility and/or a second elevator system, inside the tower, giving access to the base station unit.

Abstract: According to the ultrawideband communication antenna, since surfaces of the antenna element are coated with the first resin layer and the second resin layer each of which is mixed with the nonmagnetic metal powder and has an insulating property and a high specific inductive capacity, the size is largely reduced. Further, since the nonmagnetic metal powder is used, the first resin layer and the second resin layer are free from a loss of magnetism generated therein, thereby enabling to maintain a loss of the antenna to a low level.

Abstract: In a power-loss reducing system, a transmitting unit causes a radar to transmit a measurement radio wave, and a power monitoring unit monitors power of the measurement radio wave transmitted from the radar through a cover while changing a positional relationship between the cover and the radar. An extracting unit extracts a value of the changed positional relationship between the cover and the radar based on a result of the monitoring of the power such that the extracted value of the positional relationship allows reduction of power loss of a radar wave transmitted, through the cover, from the radar located based on the extracted value of the positional relationship.

Abstract: A wireless field device is disclosed. The wireless field device includes an enclosure having a processor disposed within the enclosure. A power module may also be located inside the enclosure and be coupled to the processor. A wireless communication module is operably coupled to the processor and is configured to communicate using radio-frequency signals. An antenna is coupled to the wireless communication module. A radome mounted to the electronics enclosure is formed of a polymeric material. The radome has a chamber inside that contains the antenna.

Abstract: A subarray of a planar array antenna has a ground plane having a rear face and a front face, radiating elements, each of the radiating elements protruding forward of the front face and physically mounted to the ground plane; circuit elements electrically coupled to the radiating elements, and physically mounted to the ground plane and positioned rearward of the rear face of the ground plane; and a dielectric radome supported on the ground plane defining a continuous surface sealed to the ground plane. The continuous surface includes a forward wall positioned forward of each of the radiating elements to form an environmental seal around the radiating elements. The radome has an intermediate wall intermediate at least one pair of adjacent ones of the antenna elements.

Abstract: A high-gain omnidirectional antenna module includes a base, an RF power amplifier, an omnidirectional antenna, a first signal line, and a second signal line. The base has a first surface and a second surface. The first signal line delivers a signal fed from outside to an input port of the RF power amplifier, and the second signal line connects an output port of the RF power amplifier and a feed portion of the antenna. The signal is amplified by the RF power amplifier, and thus the gain of the omnidirectional antenna is increased significantly. Therefore, the high-gain omnidirectional antenna effectively increases the transmission distance without increasing the size of the omnidirectional antenna.

Abstract: This invention provides an improved antenna structure comprising a connecting unit having a connector, a lightning rod, and a signal transmission section. The two ends of the connector has the first and second connecting sections, with the signal transmission section extending out the first and second connecting sections; and a connecting unit connecting to the antenna unit, which contains at least an antenna board fixed to the first connecting section and the signal transmission section, and a set of housing installed at the outer section of the antenna board and connecting to the connector. Through this, the lightning rod, connecting unit, and antenna unit can be integrated together and the effectiveness of simple structure, ease to assemble, and lowered manufacturing cost can be achieved.

Abstract: A radome for a tracking antenna system may include a dome for covering the tracking antenna, wherein the dome includes a dome wall having inner and outer skins sandwiching a low dielectric material layer therebetween, and wherein the dome wall includes a gel coat layer covering the outer skin to protect the dome in a marine environment. The inner and outer skins may have a thicknesses of approximately 0.007 to 0.027 inches, more preferably approximately 0.014 to 0.020 inches, and most preferably 0.017 inches. The low dielectric material layer may have a thickness of approximately 0.153 to 0.173 inches, more preferably approximately 0.160 to 0.166 inches, and most preferably 0.163 inches. The gel coat may have a thickness of approximately 0.010 to 0.030 inches, more preferably approximately 0.017 to 0.023 inches, and most preferably 0.020 inches. The tracking antenna system may include a tracking antenna having a resonant frequency of approximately 3 Hz to 5 Hz.

Abstract: A housing for an antenna has an end member having a radome seat and a back extension. The end member also has at least one actuator housing with an external opening and an internal opening. The end member has no through passage from its external side to its internal side, other than the opening of the actuator housing, such that upon assembly with a back and a radome, the antenna is water-tight. A retention assembly has an internal retaining member and an internal retaining member receiver. An actuator has an external actuation interface, and is mounted in the actuator housing to be water-tight. The retention assembly has a first position and a second position. The first position engages the internal retaining member with the internal retention receiver such as to maintain a closed water-tight engagement with the back and the radome. The retention assembly has a second, released position, that allows disengagement of the end member from a reflector tray.

Abstract: Attachable/detachable antennae for use with electronic systems.

Abstract: An antenna architecture with a dual-band patch antenna structure having a broadened low-frequency beamwidth is disclosed. The dual band antenna structure comprises a high frequency patch antenna cavity stacked inline above a low frequency patch antenna cavity. An N-shaped metallic wall surrounds the low frequency patch antenna cavity and broadens the emission radiation beamwidth of the low frequency emission. As such, these dual band antenna structures can emit radiation with a beamwidth of approximately 90 degrees in the low frequency band of 700 MHz to 900 MHz as well as the high frequency band of 1.7 GHz to 2.2 GHz.

Abstract: A high-gain multi-polarization antenna array module includes an antenna array and a plurality of Butler matrixes. The antenna array includes four antennas, and each antenna includes two feed portions. Each Butler matrix includes four 90° hybrid couplers, two phase shifters, four input ports, and four output ports, and the four output ports are respectively electrically connected to the four different antennas. The antenna array module integrates multi-polarization array antennas and base station antennas generating beam forming by using the Butler matrixes, such that beam shapes generated by the antenna array may be deflected according to a set specific angle, thereby greatly improving receiving quality of the antennas.

Abstract: A housing functioning as an antenna includes: a decorative film, an antenna member having a connecting pole, and a base body. The housing is formed by injection molding a molten plastic material over the decorative film, the base body is formed from the molten plastic material, and the antenna member is embedded between the decorative film and the base body, the connecting pole is exposed to the outside. A method for fabricating the housing is also described.

Abstract: An electronic device includes: a circuit board that has a wireless communication module that is mounted thereon and a feed line that is formed on the circuit board and electrically connected to the wireless communication module; a planar member that is formed with an opening and has a flexible planar piece that is formed to protrude toward the circuit board from an edge of the opening; and an antenna pattern that includes an antenna part that is formed on the planar member and a feeder part that is formed on the flexible planar piece, wherein circuit board and the planar member are arranged to be in positions to flexibly bend the flexible planar piece by the circuit board to electrically connect the feeder part of the antenna pattern and the feed line formed on the circuit board.

Abstract: The automotive radar includes a printed circuit board having a top surface and a bottom surface, and a processor mounted on the bottom surface of the printed circuit board. The automotive radar also includes a second liquid crystal polymer layer formed on the top surface of the printed circuit board, a second microstrip array printed on the second liquid crystal polymer layer, the second microstrip array having a patch, a first liquid crystal polymer layer formed on the second liquid crystal polymer layer, a first microstrip array printed on the first liquid crystal polymer layer, the first microstrip array having a perforated patch, and a transmit/receive module connected to a bottom surface of the second liquid crystal polymer layer and configured to transmit a first frequency signal to the first microstrip array and a second frequency signal to the second microstrip array.

Abstract: The present invention is a man-portable counter-mortar radar (MCMR) radar system that detects and tracks enemy mortar projectiles in flight and calculates their point of origin (launch point) to enable and direct countermeasures against the mortar and its personnel. In addition, MCMR may also perform air defense surveillance by detecting and tracking aircraft, helicopters, and ground vehicles. MCMR is a man-portable radar system that can be disassembled for transport, then quickly assembled in the field, and provides 360-degree coverage against an enemy mortar attack.

Abstract: There is provided a mobile telephone assuring a high reception sensitivity over a wide band without deteriorating the design of the mobile telephone. In the mobile telephone, a helical antenna (4) operating as an antenna for television reception is formed by winding a conductive element along the external surface of the case several times at the upper end of the upper case (1). The helical antenna (4) is impedance-matched by a matching circuit (5) in a range of the order from 470 MHz to 700 MHz which is the television broadcast frequency. The matching circuit (5) is connected to a broadcast reception circuit (6). The broadcast reception circuit (6) operates as a reception circuit for receiving the television broadcast wave.

Abstract: The linear conductor 2 penetrates the magnetic base 1 along with the longitudinal direction of the magnetic base 1. The linear conductor 2 has a straight shape. The straight shape conductor 2 is installed so that it is surrounded by outside planes of the magnetic base 1, such as the side of a rectangular parallelepiped or a cylindrical peripheral face, and it penetrates both end sides of the magnetic base 1 in the longitudinal direction.

Abstract: A dish antenna with a cover that inhibits the accumulation of water, liquid or frozen, on the front surface of an antenna. One or more vibration mechanisms are engaged with the cover so as to vibrate the cover when water, either frozen or liquid, may be present on the outer surface of the cover so as to inhibit the water from disrupting signals being transmitted to or from the dish antenna.

Abstract: The antenna structure is applied for a communication system. The antenna structure has a signal emitting/receiving portion, a flex transmitting line disposed under the signal emitting/receiving portion and electrically connected to the signal emitting/receiving portion, and a connecting portion having a first end and a second end. The first end of the connecting portion is electrically connected to the flex transmitting line, and the second end of the connecting portion is connected to an assembling portion. The antenna structure further includes a bendable piece corresponding to the flex transmitting line. The bendable piece can be bent by a force to change positions, directions, or positions and directions of the signal emitting/receiving portion connected with the flex transmitting line. The bendable piece, the flex transmitting line and the signal emitting/receiving portion are covered by a sheath.

Abstract: According to one embodiment of the invention, a radome cover for an RF sensor has been provided. The radome cover comprises a ceramic core and at least two layers. The ceramic core is sandwiched between the at least two layers and the at least two layers are impedance matched to the ceramic core. The radome cover provides ballistic protection for the RF sensor.

Abstract: An apparatus has an antenna distance setting mechanism that sets a distance between a cosmetic cover and a radio antenna. An upper housing and a radio antenna, which has a ground and a radiating element and is movably attached to the upper housing, are covered by a cosmetic cover formed of a dielectric material. An antenna distance setting mechanism includes a radio antenna supporting member, elastic members, and protrusions. The radio antenna-supporting member is movably attached to the upper housing. When the cosmetic cover is attached to the upper housing, an inner wall of the cosmetic cover pushes the ends of the protrusions against an elastic force of the elastic members to set the distance between the radiating element and the inner wall of the cosmetic cover to a predetermined distance.