Abstract: Provided is a polarization antenna. The polarization antenna includes a dielectric substrate; a radiating element formed on the dielectric substrate to be symmetric in up and down and left and right directions; and a balanced feed element including multiple pairs of feed ports which are formed on the dielectric substrate and have a symmetrical structure, applying balanced signals having different phases from each other to the paired feed ports.

Abstract: An Antenna measurement system incorporating high speed tracking laser-based global positioning capture synchronized with radio frequency (RF) measurements. A high speed tracking laser is used for collecting RF probe position data synchronously with corresponding near-field RF measurements. The probe may be moved across an arbitrary surface surrounding or adjacent to a device under test (DUT); however, it is not necessary for the probe position to be perfectly coincident with the surface, or any of the discrete points which make up the surface. Here, the probe position is determined relative to a global positioning coordinate system which is defined by a set of monuments which are in known positions relative to the global positioning coordinate system, and not the DUT.

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: An antenna includes a dielectric material having a first side opposite a second side, and a conductive via therein. A first planar conducting element is on the first side of the dielectric material and has at least one closed slot therein, and an electrical connection to the conductive via. A second planar conducting element is on the first side of the dielectric material. Each of the first and second planar conducting elements is positioned adjacent a gap that electrically isolates the first planar conducting element from the second planar conducting element. An electrical microstrip feed line is on the second side of the dielectric material, is electrically connected to the conductive via, and has a route extending from the conductive via, to across the gap, to under the second planar conducting element. The second planar conducting element provides a reference plane for the electrical microstrip feed line.

Abstract: A wireless communication device includes a metal frame, a mechanical part on which a ground is formed for providing grounding, and at least one antenna, wherein each one of the at least one antenna includes a radiator, a feed terminal electrically connected to the radiator, disposed adjacent to the metal frame and for feeding a radio-frequency signal, a first ground terminal disposed at a first side of the feed terminal for electrically connecting the metal frame with the ground of the mechanical part, and a second ground terminal disposed at a second side of the feed terminal for electrically connecting the metal frame with the ground of the mechanical part, wherein an area enclosed by the metal frame, the mechanical part and the first and second ground terminals forms a first slot.

Abstract: An antenna assembly includes a portion of the metal computing device case as a primary radiating structure. The metal computing device case includes a back face and four side faces bounding at least a portion of the back face. The metal computing device case further includes a radiating structure having an aperture formed in the back face from which a notch extends from the aperture cutting through the back face and through at least one side face of the metal computing device case. A conductive feed structure is connected to a radio. The conductive feed structure is connected to or positioned proximal to the radiating structure of the metal computing device case and is configured to excite the radiating structure at one or more resonance frequencies.

Abstract: An exemplary embodiment of an antenna assembly mountable to an antenna mount having a contact, generally includes a printed circuit board (PCB) and a contact assembly configured to provide a solderless connection between at least one antenna element of the PCB and the contact when the antenna assembly is mounted to the antenna mount. Another exemplary embodiment of an antenna assembly generally includes a base and a housing configured to be coupled to the base such that an interior enclosure is cooperatively defined by the housing and base. The interior enclosure is configured for receiving a PCB and being sealed to thereby inhibit the ingress of water into the interior enclosure. One or more electrical grounding taps are configured for establishing at least a portion of an electrically-conductive grounding pathway from outside of or external to the interior enclosure and which extends into the interior enclosure.

Abstract: An antenna feed network including a 180° hybrid coupler having a feed port, a 0° port; and a 180° port having an approximately 180° phase difference with the 0° port. A first antenna port is coupled to the 0° port; and a second antenna port is coupled to the 0° port via a respective phased line, the second antenna port having an approximately 90° phase difference with the first antenna port. A third antenna port is coupled to the 180° port; and a fourth antenna port is coupled to the 180° port via a respective phased line, the fourth antenna port having an approximately 90° phase difference with the third antenna port. The feed network can be used to drive antenna elements in phase quadrature. In a preferred embodiment the feed network drives a quadriflar helix antenna.

Abstract: A primary radiator including a waveguide formed by winding a metallic plate into a cylindrical shape and superimposing both ends thereof at a joining portion. Two first flat portions and two second flat portions, extending in the direction of the central axis of the waveguide, are formed so that a first flat portion and a second flat portion alternate at intervals of substantially 90 degrees, thereby forming a total of four flat portions. A dielectric feeder includes a radiator section, an impedance converting section, and a phase converting section.

Abstract: The invention is embodied in a monolithic semiconductor integrated circuit in which is formed an antenna, such as a slot dipole antenna, connected across a rectifying diode. In the preferred embodiment, the antenna is tuned to received an electromagnetic wave of about 2500 GHz so that the device is on the order of a wavelength in size, or about 200 microns across and 30 microns thick. This size is ideal for mounting on a microdevice such as a microrobot for example. The antenna is endowed with high gain in the direction of the incident radiation by providing a quarter-wavelength (30 microns) thick resonant cavity below the antenna, the cavity being formed as part of the monolithic integrated circuit. Preferably, the integrated circuit consists of a thin gallium arsenide membrane overlying the resonant cavity and supporting an epitaxial Gallium Arsenide semiconductor layer.

Abstract: A phased array antenna consisting of like multi-element tiles whose elements are located so as to produce an irregular array when the tiles have mutually different orientations, e.g., random. The resulting irregular array reduces the effective translational period of the array elements, which in turn ameliorates grating lobes even for wide (one wavelength) effective element spacings. An antenna so designed can maintain low peak sidelobes at far higher frequencies than a conventional translational-periodic phased array antenna of the same element density.

Abstract: The present invention relates to a device for transmitting and/or receiving electromagnetic waves comprising at least one radiating element for radiating a circular polarization of given sense, characterized in that it comprises at least one means dimensioned and positioned with respect to the radiating element in such a way as to radiate, at the frequency of the radiating element, a circular polarization of opposite sense to that of the radiating element so as to compensate for the cross component of the radiating element. The invention applies more particularly to printed antennas operating under circular polarization.

Abstract: A multifrequency antenna for a wireless communications system includes a metallic plate having a slot. The slot is used for transmitting and receiving radio signals of a first frequency band. The length of the slot corresponds to the first frequency band at which signals are transmitted and received. The antenna also includes a metallic strip connected to the metallic plate for transmitting and receiving radio signals of a second frequency band. The metallic strip may be formed as an L-shaped strip. The length of the horizontal portion of the L-shaped strip corresponds to the second frequency band at which signals are transmitted and received.

Abstract: A dual band transmission device includes a microstrip antenna. Its patch is provided with a short circuit for setting up quarter-wave resonant modes. A slot penetrates into the patch from its periphery, in the vicinity of the short circuit, and separates a first region from a second region, which second region nevertheless remains connected to the first region by a passage. Two resonant modes are obtained, one in the first region and the other in the first region, the passage and the second region. They can be excited from a common connecting line. According to the invention, the center frequencies and the pass-bands of the two modes are adjusted by means of a reactive component such as a capacitor which couples the first region to the second region in the vicinity of the origin of the slot. The invention applies in particular to producing a dual mode mobile telephone system conforming to the GSM and DCS standards.

Abstract: A remote access device which may comprise an antenna having a first inductor with a first axis, a second inductor with a second axis, and a third inductor with a third axis, where the first, second and third axes may be oriented substantially perpendicular to each other, respectively, such that the first inductor generates a first magnetic field associated with a first plane, the second inductor generates a second magnetic field associated with a second plane different than the first plane, and the third inductor generates a third magnetic field associated with a third plane different than the first and second planes. The remote access device preferably includes a single form for the first, second and third inductors, where the first, second and third inductors are each wound on the form.

Abstract: An antenna has a radiator mounted on a substrate, at least two terminals that are connected to the radiator and that extend away from a surface of the substrate, and a circuit board that is electrically connected to the radiator via the terminals. The terminals are accommodated by respective contact areas, such as holes, in the circuit board and are advantageously resilient. In this way, mis-alignment between the substrate and the circuit board is compensated, reducing the risk of antenna frequency offset.

Abstract: A dual polarization antenna for receiving and transmitting high frequency signals in conjunction with a substantially horizontal conducting vehicle panel defining a ground plane comprises three electrically conductive radiative elements, each radiative element being generally linear and extending between a proximal end and a distal end, and an electrically conducting mount (insulated from the vehicle panel) for securing the proximal ends together at a common point and in electrical circuit relation with one another for connection to a transceiver in the vehicle. The radiative elements extend vertically upwardly and outwardly from the common point whereby to form an imaginary cone with the proximal ends forming the apex of the cone. The radiative elements are of different lengths and disposed at an angle relative to the ground plane to provide horizontal and vertical polarization in a first, second and third frequency band.

Abstract: A dielectric slab is arranged on one surface of a ground plane to form a transmission guide for transmitting an electromagnetic wave along the surface from one end to the other end between the dielectric slab and the ground plane. A perturbation is loaded on the dielectric slab to leak the electromagnetic wave from the surface of the dielectric slab. A feed supplies an electromagnetic wave to one end of the transmission guide formed by the ground plane and dielectric slab. A dielectric layer is interposed between the ground plane and the dielectric slab, and has a lower permittivity than that of the dielectric slab.

Abstract: Provided is a composite dielectric molded product exhibiting excellent properties such as the antenna gain and side lobe, etc. when used for a lens antenna, and exhibiting less variation of properties in one individual product and between individual products. The composite dielectric molded product is formed by molding a composite dielectric material containing a dielectric inorganic filler and an organic polymer material so that the dielectric constant anisotropy is in the range of about 1.00 to 1.05.

Abstract: An antenna apparatus is provided with two parabolic antennas which are attached to an X-axis and adapted to independently rotate about the X-axis. The X-axis is supported between both ends of a support rail in the shape of a semicircular arc to pass through the center of the arc. The support rail is adapted to slide and is thereby permitted to rotate about the central axis of the arc as a Y-axis. The support rail is placed on a rotating base 13 adapted to rotate about a Z-axis. The entire apparatus is covered with a radome. Each of the parabolic antennas is therefore permitted to rotate about each of the X, Y and Z-axes. By controlling each axis driving mechanism according to the locations and orbits of two satellites, each of the parabolic antennas is permitted to track a respective one of the satellites.