Abstract:
A dipole antenna for wide-band communications. Some embodiments relate to a multilayer planar high-gain antenna for ultra-wideband communications having a broadband dipole structure, a tuning plate and a feed arranged roughly parallel to one another and separated from one another with dielectric materials. In one embodiment, the antenna includes four conductive layers, a reflector, which is preferably rectangular, a broadband bowtie preferably of bowtie shape, a feed structure and a parasitic element or tuning patch.
Abstract:
A radio frequency identification (RFID) antenna exhibiting a multiple resonance is disclosed. In one exemplary embodiment, a dipole antenna and a loop antenna are disposed upon a substrate and have dimensions and orientation to exhibit the multiple resonance. The dipole antenna may exhibit a first dipole section having a first length and second dipole section having a second length. The loop antenna may be disposed in a region of the dipole antenna. The ratio of the perimeter of the loop antenna to the sum of the lengths of the dipole sections may be selected to exhibit the multiple resonance.
Abstract:
According to various aspects, exemplary embodiments are provided of bow tie antennas and antenna assemblies that include the same. In an exemplary embodiment, a bow tie antenna includes a pair of antenna elements. Each antenna element includes spaced apart end portions defining an open portion such that the antenna element has an open shape. The open shape is closed by dielectric material disposed between the spaced apart end portions and extending across a gap separating the spaced apart end portions, whereby the dielectric material and pair of antenna elements cooperatively define a closed bow tie shape for the bow tie antenna.
Abstract:
A method of manufacture of antenna electronics attachment is disclosed. A nutplate is coupled to a mounting plate via a plurality of embedded fastening structures such that mechanical-electronic coupling means allow in-service change-out of an electronic component coupled to the nutplate.
Abstract:
An apparatus has an improved antenna pattern for a cross dipole antenna. Such antennas desirably have an omnidirectional antenna pattern. Conventional cross dipole antennas exhibit nulls in their antenna patterns, which can cause antennas to deviate from a standard or specification. Applicant recognized and confirmed that the connection of a coaxial cable to the antenna arms is a cause of the nulls in the antenna pattern, and has devised techniques disclosed herein to compensate or cancel the effects of the connection. In one embodiment, the arms of the cross dipole antenna that are coupled to a center conductor of the coaxial cable remain of conventional length, but the arms of the cross dipole antenna that are coupled to a shield of the coaxial cable are lengthened by a fraction of the radius of the outer diameter of the coaxial cable.
Abstract:
An antenna element and balun are described. The antenna includes a plurality of droopy bowtie antenna elements disposed on dielectric block and a feed point. The balun includes a central member having dielectric slabs symmetrically disposed on external surfaces thereof. At least one end of the balun is provided having a shape such that conductors on the dielectric slabs of the balun can be coupled to the the droopy bowtie antenna elements.
Abstract:
A bicone antenna is provided with high bandwidth and beneficial return loss performance. The antenna is dipole based and thus its radiation pattern is not strongly influenced by shape and size of a nearby ground plane. A parasitic element comprising a conductive band encircling the antenna's feed structure improves matching, gain flatness, and makes the antenna less susceptible to detuning.
Abstract:
According to one exemplary embodiment of the invention, a vehicle antenna apparatus is provided on a vehicle in such a way that this results in the antenna having a horizontal main beam direction. A first reflection apparatus above the conductive roof of the vehicle, with an exciter between these two elements, causes the reflections to be doubled, thus causing the main beam direction to be lowered from a vertical to a horizontal direction.
Abstract:
In one embodiment, an integrated antenna and display shade for a wireless portable control unit is provided which includes a stowable display shade having two side panels and a front panel between the two side panels. Each of the two side panels are foldably connected to opposing edges of the front panel so as to be capable of folding into planes generally parallel with a plane of the front panel when stowed and into planes generally orthogonal to the plane of the front panel when deployed to shade a visual display. The front panel includes an active antenna and each of the side panels include a parasitic antenna.
Abstract:
To provide an inexpensive planar antenna of stable quality which has a circuit with low resistance and in which electrical continuity between the antenna and the electronic part such as IC chip is secured, a planar antenna is made to have a circuit pattern comprised of an antenna part and a connecting terminal part on a resin film, wherein the circuit pattern has a metal layer, a conductive layer provided on the top surface of the connecting terminal part of the metal layer, and a protective layer provided on the top surface of the antenna part of the metal layer and on the section from the side surface to a portion of the top surface of the conductive layer.