A broad band diversity antenna system comprises a system of log periodic antennas (lpa) and dipole antennas. Two lpas form a balanced dipole by feeding the back ends of the lpa. The feed is improved by the addition of a balun to ensure rf balance. Because a dipole only requires narrow bandwidth, a simple balun is constructed from coax cable ...

A dual band end fed dipole provides at least two distinct operating frequencies, e. G. 2. 45 ghz and 5. 5 ghz. Properties of the antenna include low cost to manufacture, e. G. Ease of automation; minimal manual labor to manufacture, e. G. Reliability; dual band operation; broad bandwidth; good feed line isolation; omnidirectional beam pattern; minimal vertical beam squint; small diameter; and high ...

The present invention generally relates to an electromagnetic field vector sensing receive antenna array system for installation and deployment on a structure. A multipolarized array of collocated antenna elements is used to provide calibrated amplitude and phase radiation patterns with monopole, dipole, and loop modes generated from crossed loops connected to a be informer. The invention has applications for installation ...

A log-periodic antenna including one set of three radiating elements with log-periodic patterns, each radiating element including a succession of radiating dipoles distributed on either side of a rectilinear electrically conducting line, perpendicular to the line, a first radiating element having a rectilinear electrically conducting line substantially perpendicular to the first face of the substrate, the first ends of the ...

An antenna system having a dynamic radiation pattern is provided. The antenna system comprises at least one antenna unit that includes an antenna dipole, a plurality of reflectors disposed around the antenna dipole, and a plurality of switches each corresponding to one of the reflectors. Each of the switches is coupled between the corresponding reflector and an electrical ground of ...

According to various aspects, exemplary embodiments are disclosed of antenna assemblies. In an exemplary embodiment, an antenna assembly generally includes a feed network and a ground plane. Radiating dipoles or dipole radiating elements are along or on opposite sides of the feed network and the ground plane. The radiating dipoles or dipole radiating elements may be operable simultaneously and may ...

A multipole rod set of an ion guide is adapted to receive a radial rf trapping voltage and a radial dipole direct current dc voltage. A lens electrode of the ion guide is positioned at one end of the multipole rod set to extract ions from the multipole rod set and adapted to receive an axial trapping ac voltage and ...

A two-dimensional photonic crystal in which are inserted four waveguides and a resonant cavity. Owing to the existence of the photonic band gap, an electromagnetic signal propagating through the device is confined within the guides and the cavity and, through the adjustment of the orientation of a dipole mode generated within the cavity, is able to function in three distinct ...

A hybrid antenna array for use in an mri device, the array comprising a plurality of loop-line elements, each loop line element comprising a loop element and a line element, wherein the loop element and the line element are aligned along their respective center axis and coupled at an input coil port; and wherein the plurality of loop-line elements are ...

A magnetic device includes a substrate and an array including a plurality of magnetic particles, in which a magnetic dipole moment direction of each magnetic particle in a majority of the magnetic particles in the array alternates with respect to a magnetic dipole direction of a directly adjacent magnetic particle or directly adjacent magnetic particles in the array.

A headphone that has a support structure that is adapted to sit on a head or upper torso of a user, a first acoustic driver carried by the support structure such that the first acoustic driver is located off of an ear of the user, wherein the first acoustic driver has front and rear sides and sound is radiated from ...

A headphone that has a support structure that is adapted to sit on a head or upper torso of a user, a first acoustic driver carried by the support structure such that the first acoustic driver is located off of an ear of the user, wherein the first acoustic driver has front and rear sides and sound is radiated from ...

A polymorphic antenna, including a metallic template configurable in at least first and second possible different three-dimensional shapes, the antenna, when configured in the at least first and second different three-dimensional shapes, having a common antenna feed point, a common balun coupled to the common antenna feed point; and a common dipole coupled to the common antenna feed point and ...

A damping device is designed to dampen noise signals in a cable having a plurality of wires. The damping device includes a plurality of first terminals, to which is applied the voltage vector u1 and where the current vector i1 flows, a wire of the cable being connected to each first terminal; a plurality of second terminals, to which is ...

Exemplary embodiments are provided of antennas and antenna systems including the same. In an exemplary embodiment, an antenna generally includes a substrate, a radiating element along the substrate, and a ground element along the substrate. The radiating element includes a high band radiating arm and a low band radiating arm. The antenna may further include one or more resistors for ...

Liquid composition, such as an ink composition, liquid at room temperature, the liquid composition being a liquid composition specifically for printing with a binary deflected continuous jet printing technique wherein the liquid composition forms upon printing drops which are not charged by an electric field, which each have a zero electric charge, which each form a dipole under the effect ...

An antenna may include an electromagnetic band gap (ebg) ground plane, and a plurality of unit cells that are periodically spaced and inclusive of respective dipole antennas, and positioned over the ebg ground plane.

A semiconductor device includes at least one trench extending into a semiconductor substrate and lined with a gate dielectric layer; a dipole inducing layer covering a lowermost portion of the lined trench; a gate electrode covering the dipole inducing layer and filled in the lined trench; and doping regions, in the semiconductor substrate, separated from each other by the lined ...

A semiconductor device includes a substrate comprising a trench; a gate dielectric layer formed over a surface of the trench; a gate electrode positioned at a level lower than a top surface of the substrate, and comprising a lower buried portion embedded in a lower portion of the trench over the gate dielectric layer and an upper buried portion positioned ...

A brushhead assembly (10) for a power toothbrush (1), which includes a bristle plate (12) and a set of bristles (14) mounted to the bristle plate (12). The set of bristles (14) is characterized such that some or all of the bristles have a dipole whip motion during operation at a selected drive frequency, including arrangements where the bristles in a first portion (32) have a different ...

Reconfigurable antennas in an ad-hoc network are provided where all nodes employ mimo/simo/miso communication techniques. Three types of reconfigurable antennas: reconfigurable printed dipole array (rpda), reconfigurable circular patch antenna (rcpa) and two-port reconfigurable crlh leaky wave antennas are used. The rpda, rcpa and the crlh leaky wave antennas have a different number of configurations as well as different ...