Abstract: The biconical loop antenna is the dual and compliment to the biconical dipole antenna, and has broadband omnidirectional horizontally polarized radiation. The antenna includes a conductive antenna body having first and second opposing ends with a medial portion therebetween. The antenna body has a slot extending from at least adjacent the first end to at least adjacent the second end, and the medial portion of the antenna body is wider than the opposing ends. First and second body portions may be conical antenna elements connected together at their respective bases. Antenna feed points are at the medial and chine portion of the antenna body adjacent the slot.

Abstract: A mobile communication device. An antenna provides an output signal including a first resonance frequency and a wavelength. A printed circuit board (PCV) includes a metal grounding face and a layout face opposite the metal grounding face and is coupled to the antenna at a first node. A metal module is coupled to the metal grounding face at a second node. A distance between the first node and the second node is determined by the wavelength.

Abstract: Disclosed herein are wireless products adapted to be positioned in a normal or resting position, that also include an antenna composed of a set of elements arranged in a plane in a radially symmetrical configuration providing a reduction in the susceptibility of reflected waves having the potential to cancel or weaken a main wave or signal, the plane positioned with respect to the normal position to direct a main communication line with a second wireless device into the plane and provide reception of a main and/or secondary signal at a plurality of phases. One exemplary product is a wireless conferencing device configured to rest on a tabletop, the antenna array oriented in a horizontal plane. Detailed information on various example embodiments of the inventions are provided in the Detailed Description below, and the inventions are defined by the appended claims.

Abstract: A single-feedpoint multiband monopole antenna is provided with independent radiator elements. The antenna comprises a microstrip counterpoise coupler having a single-feedpoint interface, a first radiator interface, and a second radiator interface. A first microstrip radiator, i.e. a meander line microstrip, has an end connected to the counterpoise coupler first radiator interface, and an unterminated end. A second microstrip radiator, i.e. a straight-line microstrip, has an end connected to the counterpoise coupler second radiator interface, and an unterminated end. The two radiators are capable of resonating at non-harmonically related frequencies. As with the two microstrip radiators, the microstrip counterpoise coupler is a conductive trace formed overlying a sheet of dielectric material. The counterpoise coupler can come in a variety of shapes, so that the overall antenna may take on a number of form factors.

Abstract: The present invention relates to a satellite tracking antenna system and a satellite tracking method. Step tracking in which the size of a satellite signal sampled in at least one position in which a reflector of the satellite tracking antenna system is tilted is compared to track a satellite is performed, and a measured value of the satellite signal sampled in a specific position in which the reflector is tilted in N?1th tracking and a measured value of the satellite signal sampled in the specific position in which the reflector is tilted in Nth tracking are averaged to compute a value. The reflector is driven according to the value to track the satellite, thereby minimizing a satellite tracking error caused by a sudden movement of a mobile body equipped with the satellite tracking antenna system.

Abstract: There is provided a telescope system including: a main reflector unit; a pedestal unit that bears the main reflector unit to be rotatable around AZ and EL axes; and a motor that drives the main reflector unit. The telescope system corrects deformation of the main reflector unit and the pedestal unit due to the wind force to improve pointing accuracy of the mina mirror unit and the pedestal unit. The telescope system detects motor torques on the AZ axis and the EL axis, predicts deformation of a telescope due to the wind force from torque signals of the motor torques and a pointing error due to the deformation and feeds back the deformation and the pointing error to AZ and EL command values to perform correction of the pointing error.

Abstract: The present invention relates to a mobile display device including a main body; an antenna mounted on a side of the main body; a tilting shaft provided in one of the main body and the antenna; a tilting support provided in the other one of the main body and the antenna, and supporting the tilting shaft to tilt the antenna with respect to the main body; and an antenna accommodator provided in the main body to house the antenna which is tilted therein.

Abstract: A slot and multi-inverted-F coupling wideband antenna and an electronic device using the aforementioned wideband antenna are disclosed. The antenna includes at least a ground portion, a first radiation portion, a second radiation portion, a third radiation portion, a fine tuning metal portion, and a transmission cable. The first radiation portion is electrically coupled to the ground portion. The fine tuning metal portion is electrically coupled to the first radiation portion. The second radiation portion is electrically coupled to the fine tuning metal portion and forms a first inverted-F antenna with the first radiation portion. The third radiation portion is electrically coupled to the fine tuning metal portion and forms a second inverted-F antenna with the first radiation portion. The transmission cable is electrically coupled to one of the first radiation portion and the fine tuning metal portion.

Abstract: An antenna for mounting on a motor-vehicle part formed with a throughgoing hole of nonround shape has a base plate engageable with the part over the hole and carrying antenna components and a stem projecting through the hole. A bayonet plate has an outer edge of nonround shape capable of passing axially through the hole of the part and not able to pass through the hole of the part in another angularly offset position. This bayonet plate can move angularly on the base plate between an install position and a holding position and is urged by a spring toward the base plate and against the part. Spacers engageable in the install position hold the bayonet plate at a predetermined large axial spacing from the base plate and disengage from each other in the holding position to allow the bayonet plate to be pressed by the spring against the motor-vehicle part.

Abstract: Various embodiments are described relating to a portable antenna-equipped device for multi-band radar detection. The detection device includes a plurality of antennas on a flexible substrate, a detection-and-control circuit, an indicator and a power source. The antenna may include one or more planar lithographic antennas that may be fabricated on a thin-film substrate. Each antenna may be tuned to a different selection frequency or band. The antennas may include a bolometer for radar detection. Each antenna may include a frequency selective surface for tuning to the selection frequency.

Abstract: A low power, lightweight, collapsible and rugged antenna positioner for use in communicating with geostationary, geosynchronous and low earth orbit satellite. By collapsing, invention may be easily carried or shipped in a compact container. May be used in remote locations with simple or automated setup and orientation. Azimuth is adjusted by rotating an antenna in relation to a positioner base and elevation is adjusted by rotating an elevation motor coupled with the antenna. Manual orientation of antenna for linear polarized satellites yields lower weight and power usage. Updates ephemeris or TLE data via satellite. Algorithms used for search including Clarke Belt fallback, transponder/beacon searching switch, azimuth priority searching and tracking including uneven re-peak scheduling yield lower power usage. Orientation aid via user interface allows for smaller azimuth motor, simplifies wiring and lowers weight. Tilt compensation, bump detection and failure contingency provide robustness.

Abstract: An antenna coil includes: a core (3) formed by shaping a magnetic material into a bar-like configuration; a bobbin (1) having a through-hole (12) into which the core (3) is to be inserted; a connection section (15) fixed to the bobbin (1) so as to extend in a length direction of the core (3) from the bobbin (1), with the core (3) inserted into the through-hole (12); a winding (14) which is wound around the bobbin (1) and whose ends are connected to the connection section (15); and a connector terminal (25) which is provided at a certain position in the length direction of the core (3), which fixes the connection section (15) in position, and which determines the position of the winding (14) in the length direction of the core (3).

Abstract: A method for improving the efficiency of antennas having transparent thin-film conductive surfaces, and antennas improved by the method are disclosed. For a selected frequency of antenna operation, values for surface current density in areas distributed over the surface of the thin-film are determined. Regions of the surface containing areas having concentrated current flow are identified based upon the determined values of current density. Antenna efficiency is improved by increasing conductivity in areas of the thin-film surface found to have concentrated current flow. The method enables the improvement of the efficiency of antennas having transparent thin-film conducting surfaces, without unnecessarily obstructing the optical view through the thin-film surfaces of the antennas.

Abstract: Disclosed is a combined DMB and mobile communication antenna apparatus for a mobile communication terminal. The antenna apparatus includes one whip antenna for receiving both signals in a DMB frequency band and in a mobile communication frequency band, a first contact coupled to the whip antenna to receive the signal in the mobile communication frequency band from the whip antenna, and a second contact located under the first contact within a terminal main body and coming in contact with the whip antenna at a lower end of the whip antenna to receive the signal in the DMB frequency band when the whip antenna is drawn out.

Abstract: An antenna system comprises a first antenna that is arranged on a printed circuit board (PCB) and that includes an arc-shaped element having a concave side and a convex side. A conducting element extends substantially radially from a center of the concave side. A U-shaped element has a base portion with a center that communicates with the conducting element and two side portions that extend from ends of the base portion towards the concave side. Second and third antennas are arranged on the PCB and include an inner ring and an outer ring that is concentric to the inner ring.

Abstract: An antenna system comprises first, second, and third antennas that are arranged on a printed circuit board (PCB) and that include an arc-shaped element having a concave side and a convex side, and a conducting element that extends substantially radially from a center of the concave side.

Abstract: A reconfigurable frequency selective surface (FSS) includes a plurality of conducting patches supported on the surface of a dielectric layer, with selectable electrical interconnections between the conducting patches so as to provide a desired characteristic. The reconfigurable FSS can be used in a reconfigurable artificial magnetic conductor (AMC). A reconfigurable AMC includes a dielectric layer, a conducting back-plane on one surface of the dielectric layer, and a reconfigurable FSS on the other surface of the dielectric layer. A reconfigurable AMC can be used as a dynamically reconfigurable ground plane for a low-profile antenna system.

Abstract: The slot-mode antenna includes an array of slot antenna units carried by a substrate, and each slot antenna unit having a pair of patch antenna elements arranged in laterally spaced apart relation about at least one central feed position. Adjacent patch antenna elements of adjacent slot-mode antenna units have respective spaced apart edge portions with predetermined shapes and relative positioning to provide increased capacitive coupling therebetween. The spaced apart edge portions may be continuously or periodically interdigitated to provide the increased capacitive coupling therebetween.

Abstract: Portable communication devices are provided. A portable communication device includes a housing, an antenna, and a push button. The housing includes a first receiving portion and a second receiving portion. The antenna is detachably disposed in the first receiving portion. The antenna includes a first engaging portion. The battery is detachably disposed in the second receiving portion. The battery includes a second engaging portion. The push button is disposed in the housing and includes a third engaging portion and a fourth engaging portion. The third engaging portion movably engages with the first engaging portion to fix the antenna to the housing. The fourth engaging portion movably engages with the second engaging portion to fix the battery to the housing.

Abstract: An antenna assembly is use in a telecommunication device having a first printed circuit board and a second printed circuit board disposed right below and facing the first printed circuit board. The antenna assembly includes: radiating metal strip having a main strip section for disposing on an upper surface of the first printed circuit board, a feeding strip section extending from the main strip section through a first through hole in the first printed circuit board toward the second printed circuit board, and a grounding strip section extending from the main strip section through a second through hole in the first printed circuit board toward the second printed circuit board. After assembly, the feeding and grounding strip sections tend toward an upper surface of the second printed circuit board.