Abstract: The dielectric antenna device of the present invention is a dielectric antenna device having at least one feed element that is buried in a dielectric. The interval between the end portion of the feed element and the end face of the dielectric in a direction passing through the end portion of the feed element from a feeding point thereof is substantially 1/20 or more of the wavelength of a wireless signal that is formed within the dielectric. This constitution provides a dielectric antenna device that has stabilized resonance frequency.

Abstract: An antenna device includes an antenna member having a plate, a conductor member disposed on one side of the plate, and another conductor member disposed on the other side of the plate, the plate includes one or more orifices and one or more apertures, and a coupler includes one or more positive electrodes and one or more negative electrodes engaged through the orifices and the apertures of the antenna member and electrically coupled to the conductor members respectively. A housing includes a chamber for receiving the plate of the antenna member, and a cylindrical member having a bore for receiving the coupler. The housing includes two housing members having a chamber for receiving the plate.

Abstract: An apparatus for detection of the gradient of a magnetic field includes at least four antenna elements (11, 12, 13, 14) composed of a ferromagnetic material, which are arranged in pairs, and a bridge circuit having at least four resistance elements (1, 2, 3, 4), which are associated with the antenna elements (11, 12, 13, 14) or antenna element pairs. Each antenna element pair has at least one associated resistance element (1, 2, 3, 4) whose resistance value is dependent on the field strength and on the direction of the magnetic field, and which resistance element (1, 2, 3, 4) is arranged in a field area (19) which extends between the two antenna elements (11, 12, 13, 14) of the antenna element pair. The invention also relates to a method for production of an apparatus which is intended for detection of the gradient of a magnetic field.

Abstract: An antenna for generating electron spin radiation corresponding to a signal from a radio frequency communications device includes a substantially cylindrical conductor, a first spiral-wound flat inductor, a second spiral-wound flat inductor and a reactive element. The first spiral-wound flat inductor is wound in relation to the second spiral-wound flat inductor so that when a current flows from the first signal terminal to the second signal terminal, a first magnetic field is generated from the first spiral-wound flat inductor and a second magnetic field is generated from the second spiral-wound flat inductor. The first magnetic field is in an opposite direction from the second magnetic field. The substantially cylindrical conductor is disposed so as to intersect the first magnetic field and the second magnetic field. The antenna may also be used to receive electron spin radiation.

Abstract: An antenna module comprising at least two antennas in substantial close proximity and a shield configured to reduce interference between the antennas and/or to shape the antenna coverage areas is disclosed. A substantially triangular shield with antennas positioned at each of the vertices may shape the antenna coverage areas to form virtual sectors.

Abstract: A quadrifilar helical antenna comprising two pairs of filars having unequal lengths and phase quadrature signals propagating thereon. A conductive H-shaped impedance matching element matches a source impedance to an antenna impedance. The impedance matching element having a feed terminal at the center thereof from which current is supplied to the two filars of each filar pair disposed about an edge of the impedance matching element and symmetric with respect to a center of the impedance matching element. The impedance matching element further comprises a reactive element for matching the antenna and source impedances.

Abstract: A stowable antenna system for a security system is providing which includes an electronic radiating element in the form of a furlable flexible sheet, a power supply to power the electronic radiating element and a housing to receive and store the radiating element in a furled condition. The radiating element may be extended to an unfurled condition for use in the security system. One or more risers may extend from the housing for supporting the radiating element in the unfurled condition. The electronic radiating element may be received in the housing and stored in the housing in a rolled up, windowshade configuration.

Abstract: A dual polarization planar antenna comprising a first layer comprising a first patch, a second layer beneath the first layer comprising a first feed line for coupling a first signal to the first patch and a second feed line for coupling a second signal to the first patch such that the first patch radiates a field that has two different polarizations, and a third layer comprising first and second coupling discs electrically connected to the first feed line and third and fourth coupling discs electrically connected to the second feed line, wherein the first and second discs are electrically coupled to each other by a first half wavelength conductor and the third and fourth discs are electrically coupled the each other by a second half wavelength conductor, the first and second half wavelength conductors not being disposed in the second layer.

Abstract: A connector adapted to transfer microwave energy between two planes within 45° of perpendicular to one another, comprising a first member comprising a first conductor separated from a first conductive ground plane separated by a first dielectric, the first dielectric having a slot formed therein; and a second member comprising a second conductor separated from a second ground plane by a second dielectric, the second conductor being provided with an electrical connection to the second ground plane at a first end of the second member; in which the first end of the second member extends through the slot in the first member such that the electrical connection is positioned between first ground plane and first conductor. The connector may be a microwave antenna, in which case the first conductor forms a microstrip patch antenna. A method of producing such connectors and an array of such antennas is also disclosed.

Abstract: The invention relates to a textile strip comprising an integrated antenna thread for an RF transponder. The aim of the invention is to produce a textile strip in a simple, flexible manner and to avoid the risk of short-circuits. To achieve this, the strip is configured from a base textile (2, 2a) that is produced on a needle loom. The antenna thread (4, 4a, 4b) is laid on the base textile in an undulating or zigzag form during the production of said textile, the distance between the limbs (14a, 14b) of an antenna thread loop and at least one edge (8) of the strip being two weft threads.

Abstract: A ballast arrangement is provided for igniting and operating a discharge lamp. The lamp is connected in a commutating bridge in series with an inductor and parallel to a capacitor. The inductor and the capacitor together form a resonance circuit. During ignition, the bridge is commutated at a comparatively high frequency that changes with respect to time. The series resonance circuit has a resonance frequency that is close to an odd harmonic of the comparatively high frequency.

Abstract: A stacked monopole antenna for broadband communication equipment, the antenna is provided with a plurality of component sheets arranged from bottom to top, a gap for adjusting impedance matching is provided between every two component sheets, and the component sheets form centrally thereof an integral connecting neck, a feed-in line is provided on the bottom of the antenna; the component sheets get its desired broad bandwidth by adjusting the height stacked by said component sheets.

Abstract: The present invention relates to a broadband monopole antenna comprising a “cup”-shaped radiating element mounted on an earth plane forming support of annular shape. This antenna can be used in the field of portable television apparatuses.

Abstract: Power taken inductively from the alternating current in a track is received by a resonant circuit which is at least partially decoupled by a switching circuit asynchronously with the frequency of the power supply. The switch on and off time is controlled to regulate the output power, either the voltage or the current output being a function of the switch off time divided by the switch on time.

Abstract: A frequency down converter. A plate body of the frequency down converter includes a main surface. A first wave guide includes a first section and a second section connected to the first section. The first section is connected to the main surface and extends parallel thereto. The second section extends perpendicular to the main surface. A second wave guide includes a third section and a fourth section connected to the third section. The third section is connected to the main surface and extends parallel thereto. The fourth section extends perpendicular to the main surface.

Abstract: An electronic apparatus with an antenna, an anti-jamming system and a method are disclosed. The electronic apparatus comprises a casing and the antenna. The antenna is composed of a patterned metal thin film and a carrier and provided for processing a wireless signal. The casing and the antenna are made by injection molding. When the electronic apparatus has a display device, the anti-jamming system can modulate a clock signal generated by the display device to prevent the multiplication of clock signal from interfering with signals within an operating band of the antenna.

Abstract: An antenna system and method for measuring azimuth and elevation angles of an active, signal sending radiosonde. The system includes a first passive antenna group having at least two antenna arrays, the direction pattern of which is wide at least in elevation plane for measuring azimuth angle based on the phase differences between the antenna arrays, a second passive antenna group having at least two antenna arrays, the direction pattern of which is wide at least in elevation plane for measuring the elevation angle based on the phase differences between the antenna arrays and the rotational position of the antenna field, and at least one third antenna having high gain for receiving the telemetry signal, the direction pattern of which element is narrow in azimuth plane and wide in elevation plane. The first and second antenna groups form a solid antenna field which is fixedly tilted in a predetermined elevation position.

Abstract: An antenna comprising a magnetic main-path member comprising a coil wound around a magnetic core, and a magnetic sub-path member magnetically connected to the magnetic core for constituting a substantially closed magnetic path with the magnetic main-path member, the antenna meeting the relation of (S/N)1>(S/N)0, wherein (S/N)1 is a ratio of a signal voltage S obtained from the coil to a noise voltage N in this antenna, and (S/N)0 is a ratio of a signal voltage S to a noise voltage N in an antenna having the same structure except for having no magnetic sub-path member.

Abstract: An antenna unit consists of an EBG reflector, a single curl antenna supported at a central portion of the EBG reflector, and a periodic structure upper plate disposed apart from a principal surface of the EBG reflector by a predetermined distance. The EBG reflector includes a substrate having the principal surface and (Nx×Ny) square patches which are printed on the principle surface of the substrate and which are arranged in a matrix fashion (lattice structure). The periodic structure upper plate consists of a film and (Nx×Ny) square patch-like conductors printed on the film. The (Nx×Ny) square patch-like conductors are disposed so as to oppose to the (Nx×Ny) square patches, respectively.

Abstract: An internal antenna system (200) for reducing interference in a wireless communication device (100) is provided. The internal antenna system (200) comprises an antenna (202) and a housing (110). The housing is configured to reduce interference in the transmission caused by the metal surface of the housing. The housing is made of or plated with an electromagnetically transparent decorative metal (ETDM). The housing has metal islands, which are separated from each other by gaps. These gaps in the ETDM surface allow the radio frequency (RF) energy of signals transmitted by the antenna to pass through.