Abstract: An antenna capable of being joined to an antenna feed perpendicular to a ground plane includes a conductive radiator and a circular wafer surrounding the radiator. The radiator is tubular and has a longitudinal slot along the entire length thereof, parallel to the radiator's axis. The antenna feed can be connected across the slot. The wafer, made either or a conventional high dielectric isotropic material or of a uniaxial dielectric material, is spaced apart from the radiator and has a thickness approximately equal to the width of the slot, a diameter wherein a ratio of a diameter of the radiator to the diameter of the wafer is approximately 35%, and is located at a height above the ground plane equal to approximately 35% of the length of the radiator. The material of the wafer has a dielectric tensor with high polarizability in the axial direction and can be applied to preexisting antennas. This antenna gives enhanced bandwidth over ordinary slotted antennas.

Abstract: An antenna module configured for use on an underwater vehicle is disclosed. The antenna module includes an array of spiral antennas fabricated on a multi-layer substrate that provides wide-band RF communication with direction finding (DF) capability. The antenna module can also include other antennas fabricated on the same multi-layer substrate, such as one or more global positioning system (GPS) receivers, an ultra-high frequency/very-high frequency (UHV/VHF) antenna, or one or more iridium antennas. The antenna module may further include a water-proof housing that is coupled to the outside hull of an undersea vehicle via a coupling mechanism. The coupling mechanism allows the antenna module to rotate between a stowed position against the hull and a deployed position that extends the antennas out away from the undersea vehicle. The antenna module is curved or flexible so it can stow against a corresponding curved hull of the undersea vehicle.

Abstract: An electronic device that communicates a packet or a frame is described. This electronic device includes: at least an antenna having an antenna radiation pattern; an interface circuit; and an antenna cover that includes an integrated static lens, where the antenna cover is selected from a set of antenna covers that includes different integrated static lenses. During operation, the interface circuit may transmit, from the antenna, wireless signals corresponding to the packet or the frame, where the integrated static lens modifies the antenna radiation pattern of the antenna. For example, the integrated static lens may cause the wireless signals to converge or diverge. Alternatively, the integrated static lens may change an angular elevation of the antenna radiation pattern and/or may provide a correction for pathloss as a function of angle. Note that the integrated static lens may be a stepwise approximation to a predefined function.

Abstract: An array antenna system having an RF-port with individually controlled radiating elements.

Abstract: A waveguide polarizer for converting between a linearly polarized electromagnetic field in a first waveguide and a circularly polarized electromagnetic field in a second waveguide is provided. The waveguide polarizer includes a structure interconnecting the first and second waveguide which includes a waveguide excitation arrangement with a bifilar helical shape. A circularly polarized antenna arranged to be connected to the first waveguide of the waveguide polarizer and a satellite arrangement are also provided.

Abstract: A filter-antenna and a method for making a filter-antenna. The filter antenna includes a microstrip antenna, such as a patch antenna, integrated with an absorptive (e.g., bandstop) filter for absorbing or dissipating energy.

Abstract: Configurations of an electronic communication device, an electronic device or an antenna structure are described herein. The antenna structure includes a building construction block structure that provides a non-radiating portion of the antenna structure. A radiating element is formed on one side of the building construction block provides a radiating portion of the antenna structure. The radiating element may include a coating of a metallic element, such as copper. Further, the antenna structure includes a ground plane that is spaced apart from the radiating element on the building construction block structure. The ground plane may partially include a portion of the radiating element configured to adhere to the building construction block structure of the antenna structure. The antenna structure may passively transmit and/or receive signals and provisions flexibility of deployment in different configurations based on the applications.

Abstract: An antenna for a ground-penetration radar system is disclosed. The antenna has a housing that defines a cavity. A radiator is located on a surface of a planar substrate within the cavity. A wear-block is located between the radiator and the opening to the cavity for providing mechanical protection to the radiator. An absorber assembly is located on an opposite side of the radiator from the opening. The absorber assembly comprises a microwave absorber and a first dielectric layer. The first dielectric layer is located between the radiator and the microwave absorber.

Abstract: A low profile dual-frequency antenna device comprises an insulative carrier having a first surface and a second surface which are opposite and a conductor unit, the conductor unit comprises a first conductor which is provided to the first surface and a second conductor which is provided to the second surface and connected with the first conductor, a first radiation slot as a low frequency slot antenna is formed between the first conductor and the second conductor, the first conductor is formed with a second radiation slot, a third radiation slot which is communicated with the first radiation slot and the second radiation slot, a fourth radiation slot and a fifth radiation slot, and the third radiation slot, the fourth radiation slot and the fifth radiation slot together constitute a high frequency slot antenna, the second radiation slot decides an impedance and a resonance frequency width of each antenna, a first side edge and a second side edge is oppositely positioned at a location where the second radiatio

Abstract: An electronic device may have an antenna that conveys radio-frequency signals at frequencies greater than 10 GHz. The antenna may be embedded in a substrate. The substrate may have routing layers, first antenna layers on the routing layers, second antenna layers on the first antenna layers, and a third antenna layers on the second antenna layers. The antenna may include first traces on the first antenna layers, second traces on the second antenna layers, and third traces on the third antenna layers. The first antenna layers may have a first bulk dielectric permittivity. The second layers may have a second bulk dielectric permittivity. The third layers may have a third bulk dielectric permittivity. At least one of the first, second, and third bulk dielectric permittivities may be different from the others. This may differentially load the antenna across the antenna layers, thereby broadening the bandwidth of the antenna.

Abstract: Disclosed is an electronic device including a housing having a front surface, a rear surface, and a side surface partially surrounding a space between the front surface and the rear surface, wherein at least one of the front surface, the rear surface, and the side surface comprises a non-conductive portion, and at least a partial region of the non-conductive portion comprises a first through hole, a component at least partially overlapping the first through hole when the non-conductive portion is viewed from outside the housing, wherein the component is disposed at a position spaced apart from the non-conductive portion by a first distance, and an antenna structure disposed at a position spaced apart from the non-conductive portion by a second distance shorter than the first distance, wherein the antenna structure is configured to radiate radio waves through the non-conductive portion, and comprises at least one second through hole.

Abstract: The antenna uses X Band frequencies for long-distance weather monitoring and W Band frequencies for imaging of terrain and obstacles, for use in a radar system in aircraft nose radome to operate effectively in a degraded visual environment. The antenna's feed structure includes concentrically positioned first and second horns. First and second rectangular waveguides are positioned on a cylindrical portion of the first horn, and at a first and second radial positions spaced 90 degrees apart. First and second coaxial cables respectively couple the first and second rectangular waveguides to a polarization converter, which launches linearly polarized waves received from each of the first and second coaxial cables to form a W-hand circularly polarized wave. The feed structure collects and disseminates W Band and X Band electromagnetic energy.

Abstract: Methods and apparatus for a radiator assembly having a feed circuit with an air interface to a quadridge feed structure to excite an antenna, such as a stacked patch antenna. Embodiments of the assembly can provide enhanced bandwidth, scan angle performance, and coincident phase centers for dual-linear polarizations.

Abstract: Various antenna designs are presented that can be used to provide for wireless communication in electronic devices, such as wearable electronic devices. Various embodiments provide antenna structures and designs that can support multiple frequency bands in a relatively compact space. Various embodiments utilize a ring antenna forming a portion of an outer perimeter of the housing, the ring antenna including a plurality of connections coupled the PCB, the plurality of connections. The plurality of connections include at least one feed connection coupled to at least one signal source on the PCB, respectively, and at least one ground connection coupled to a ground point on the PCB. In some embodiments, the connections may be inductively or capacitively loaded. The ring antenna may include a single feed connection or multiple feed connections respectively coupled to different signal sources.

Abstract: In one embodiment, an antenna assembly is described. The antenna assembly includes and antenna and an antenna positioner coupled to the antenna. The antenna positioner includes a single drive interface and a plurality of gears. The plurality of gears rotate in a first manner in response to a first drive direction applied through the single drive interface, and rotate in a second manner in response to a second drive applied through the single drive interface. The antenna positioner also includes a threaded rod that moves in a first rod direction and a second rod direction in response to rotation of the plurality of gears in the first manner and the second manner respectively. The antenna positioner also includes a tilt plate contacting the threaded rod. The tilt plate tilts about a pivot line in response to movement of the threaded rod to move a beam of the antenna in a spiral pattern.

Abstract: Disclosed is a dual band antenna with a first radiating element oriented at a first predetermined angle that operates in a first frequency band and a second radiating element oriented at a second predetermined angle that operates in a second frequency band. The dual band antenna has a ground plane that has a first slot that is associated with the first radiating element and a second slot that is associated with the second radiating element. The dual band antenna also has a first feed probe that is associated with the first radiating element and a second feed probe that is associated with the second radiating element.

Abstract: A novel, interlocking, snap-fit connection between an antenna aperture and a ground plane layer that contains coaxial connectors is described herein. The snap-fit design provides a simple and solderless transition from the connectors to elements of the antenna aperture. This design facilitates easy assembly and disassembly, allowing parts to be removed, reinstalled and/or reused.

Abstract: An electronic device includes a device body, a processing unit, and an antenna module. The antenna module includes an insulating frame and an antenna structure. The insulating frame has a first surface, and a second surface corresponding to the first surface. The antenna structure includes a feeding portion, a first radiation portion, and a first extension portion. The feeding portion includes a first feeding terminal, a second feeding terminal, and a conductive via. The second feeding terminal is coupled to the processing unit, and the conductive via is configured to connect the first feeding terminal to the second feeding terminal. The first radiation portion is connected to the first feeding terminal, the first extension portion is disposed on the second surface and is connected to the first radiation portion, and a first slot is formed between the first extension portion and the second feeding terminal.

Abstract: Disclosed herein is a combination faceplate antenna holder for an electric utility meter.

Abstract: A system of spiral antennas is incorporated into aircraft body panels. The spiral antennas may be slot or printed material antennas, cavity backed for unidirectional communication, or open for bi-directional communication. The spiral antennas are operated in concert as a steerable array. The spiral antennas are utilized for various signal functions including ultra-wideband communications and electronic support measures interferometry.