Abstract: Apparatus and associated methods relate to a Meissner Engine Regulator (MER) that includes a superconducting inductive element (SCIE) supplying a secondary winding coupled to recirculate excess energy from the SCIE core to a feedback winding controlled to regulate the SCIE magnetic field strength to be substantially at or below a critical magnetic field strength (HC). In an illustrative example, Hc may be the maximum field strength to obtain the Meissner effect in the SCIE. In some examples, the SCIE may be wound with n-filar windings. The SCIE may further include a first primary electrically coupled to and powered by a DC-to-AC power inverter, for example. The secondary winding may operate to remove excess energy from the magnetic field in the SCIE, for example, and store it in a capacitor. The SCIE may be supercooled, with liquid nitrogen, for example, such that the MER reaches electrical efficiencies approaching 100%.

Abstract: The present invention is directed to an antenna system comprising two rigid portions, an electrical conductor located between the two rigid portions, and a connector that extends between the two rigid portions and: (a) allows the position of one of the rigid portions relative to the other rigid portion to be altered when a force is applied to one of the rigid portions, such as when one of the rigid portions encounters an obstacle, and (b) maintains the altered position until a subsequent force is applied. In one embodiment, the connector comprises a ball-and-socket joint with the spring force produced by the socket causing sufficient frictional force between the ball and socket so that the position relationship of the ball to the socket is maintained when only gravity is being applied to the rigid portions and the connector but allowing the positional relationship to be altered when an additional force is applied.

Abstract: The invention relates to a structure comprising an enclosed antenna system, and a radome (18), where the structure comprises: a tower (B, C), comprising a main tube (2) fastened on a bottom flange (7) of the tower (B, C), a smaller-diameter tube (5) which hooks within the main tube (2) and further is fastened on an upper flange (8) of the tower (B, C), a nut (6) fastened on the other end of said smaller-diameter tube (5), a rod (3) which screws on within the nut (6), a shaft (4) fastened at the bottom part of the rod (3) and terminating in a nut (1), where the radome (18) is fastened on the upper flange (8) of the tower (B,C), thus making it possible to check the antennas mounted on the main tube (2) by that when screwing the nut (1), the radome (18) is arranged to move upwards, making the bottom of the antenna system accessible.

Abstract: An improved antenna array (100) comprises a set of array elements (102 a-p) electromagnetically coupled to a transmission line. The transmission line comprises a live conductor (122) and a return conductor, and the live conductor (122) is terminated by a direct connection to the return conductor. An input signal fed to the live conductor (122) is radiated by the array elements (102 a-p) and the antenna array (100) is arranged such that any portion of the input signal reaching the termination is reflected at the termination so as to form a reflected signal that superimposes with the input signal to produce a predetermined farfield radiation pattern.

Abstract: An antenna is disclosed to efficiently ionize the atmosphere for the purpose of reducing the aerosol counts, and therefore the number of poluted particles in suspension in the atmosphere, by deposition to ground. The antenna includes peripheral nodes and a central node. Each of the peripheral nodes is connected to adjacent peripheral nodes through peripheral spokes. The peripheral nodes are also connected to the central node through radial spokes. Electric power is applied to the peripheral spokes and the radial spokes causing the antenna to charge the atmosphere through the emission of ions. The antenna minimizes an attenuation factor that reduces ionization efficiency and reduces the land requirements for its installation.

Abstract: An antenna core design. An antenna assembly is provided for use in tracking and locating equipment used to track and locate tools with underground drilling systems. The antenna assembly comprises an elongate core, a plurality of metal strips supported on an external surface of the core, an insulating material adapted to insulate each of the plurality of metal strips from the other metal strips and the core, and a wire disposed around the external surface of the strips. Alternatively the antenna assembly comprises an elongate core, an insulating material disposed around a perimeter of the core, and a wire disposed around the insulating material. The core has a plurality of slots cut from one end of the core so that the core defines a plurality of metal strips. A support ring is disposed on the internal surface of the core to support the metal strips.

Abstract: An antenna for radiating and/or receiving signals. The antenna includes (i) a first hollow and helical pipe, (ii) a second hollow and helical pipe, (iii) a first transmission wire, (iv) a second transmission wire, and (v) a dielectric connector. The dielectric connector physically couples to the first hollow and helical pipe and the second hollow and helical pipe. The first hollow and helical pipe and the second hollow and helical pipe comprise an electrically conductive material. The first transmission wire comprises a first portion and a second portion. The second transmission wire comprises a third portion and a fourth portion. The first portion of the first transmission wire and the third portion of the second transmission wire are inside the first hollow and helical pipe.

Abstract: With a view to shortening the cable laying time there is provided a magnetic resonance imaging apparatus for generating an image of a subject in accordance with a magnetic resonance signal received after application of a high-frequency magnetic field to the subject under a static magnetic field and a gradient magnetic field, the magnetic resonance imaging apparatus comprising a base, operating portions provided in the base and performing predetermined operations, such as a data collector and a controller, two pipes projecting from the base, and plural cables wound in the figure of 8 onto projecting portions of the two pipes projecting from the base, one end of the cables being connected electrically to the operating portions.

Abstract: An adjustable antenna apparatus and method includes an antenna wire control device for controlling the release and retrieval of antenna wire. Antenna wire is attached to the antenna wire control device and an antenna wire tensioning device is attached to the antenna wire. According to another aspect of the invention, the antenna wire control device includes a positive control device for preventing release and retrieval of the antenna wire.

Abstract: Disclosed are conductive polymeric materials comprising a resin-based structural material loaded with micron conductive fibers and/or micron conductive powders or to provide a conductive thermoplastic composition rather than an insulator. Also disclosed are antennas comprising the conductive thermoplastic compositions and methods for their fabrication.

Abstract: An antenna comprises one or more radiating strands where at least one radiating strand has both its ends connected by means of one or more conductive wires, the radiating strands forming part of the upper pole of the antenna. Application to monopole or dipole type antennas working in the frequency ranges corresponding to the HF, VHF or UHV bands.

Abstract: An antenna comprises one or more radiating strands where at least one radiating strand has both its ends connected by means of one or more conductive wires, the radiating strands forming part of the upper pole of the antenna. Application to monopole or dipole type antennas working in the frequency ranges corresponding to the HF, VHF or UHV bands.

Abstract: A compact L-band antenna includes a plurality of elongated radiating elements arranged in a conical configuration. Ends of the radiating elements are attached to provide a single conductor end, which is attached to a connector structure.

Abstract: This invention is a lightweight, portable, quickly assembled, wide band, discone antenna for high frequency ground wave communication. The disk portion of the antenna is formed of telescoping spokes and the cone portion is formed of separate retractable wire elements. Disassembled, the antenna can be carried in a backpack. It can be assembled in less than ten minutes to achieve non-fading, non-line-of-sight communication.

Abstract: An open mesh material for use as a high performance RF reflective antenna surface and which is formed as a Leno type weave using electrically conductive composite yarns which have a construction for avoiding loose metal-to-metal contacts which generate undesirable passive intermodulation products (PIM). The composite yarns are formed by counter-wrapping stretch resistant nonconductive strands about an insulated metal strand and a stretch resistant nonconductive filler yarn. The insulated metal strand preferably includes a beryllium-copper wire which is encapsulated within a polyamide coating. The woven mesh is coated with a RF energy transparent silicone-based paint to provide additional insulation to the plastic coated wires at the weave junctions and has a surface resistivity sufficiently low to facilitate bleed off of building electro-static charges.

Abstract: An antenna (20) has a set of elongated electrically conductive radiating elements (24) disposed about a central mast (26) in the form of a maypole. The radiating elements are electrically connected to each other at a top end of the mast by a top ring (28) and near a bottom end of the mast by a bottom ring (30), both of the rings being electrically insulated from the mast. A positioning unit (32) is located on the mast between the two rings for bowing the radiating elements away from the mast. Sections of the respective radiating elements located between the positioning unit and the bottom ring are severed and connected together by impedance elements (82). Each of the impedance elements includes a resistor (84) which serves as a load for providing a current distribution in a radiating element similar to that of a traveling wave, the impedance elements also having an inductor (86) and a capacitor (88) connected in parallel with the resistor.

Abstract: An electromagnetic propulsion system based on an extremely low frequency (elf) radiating antenna structure driven by a matched high current pulsed power supply is described. The elf antenna structure resembles a modified three dimensional multiple-turn loop antenna whose geometry is optimized for the production of reaction thrust rather than the radiation of electromagnetic energy into space. The antenna structure is current driven rather than voltage drive. Rigid three dimensional geometric asymmetry, made up of flat electrical conductors that form a partially closed volume in the loop antenna structure, trap magnetic flux thereby causing a magnetic field density gradient along a single axis. This magnetic field density gradient then causes an imbalance in the magneto- mechanical forces that normally result from the interactions of the loop antenna's internal magnetic field with the current in the conductors of the loop antenna structure, as described by the Lorentz Force Law.

Abstract: A biconical antenna for ultra broad-band linear polarization operation in which capacitive sleeve VSWR tuning is effected between the apex regions of the two cones and zig-zag substantially V-shaped spokes are provided conically diverging from the cone base peripheries.

Abstract: The invention relates to a device for wind bracing of the vertical members of a lattice mast. It is characterized in that it is provided at its ends (5, 6) with detachable means (8, 9) for joining it to its vertical members, which in turn are provided with complementary means (10).

Abstract: An omnidirectional antenna for TV reception and the like has a dielectric semi-circular frame with a central aperture in the diametral portion and a succession of equally spaced notches in the circumferential arc around which a plurality of loops of a continuous length of twin-lead wire are coiled in a substantially random sequence, yielding advantages superior in more than one respect to conventional "rabbit ears" type antenna.

Abstract: The present invention discloses an antenna for broad-band radio wave receivers comprising a plurality of conductive elongated members, each being attached at one end to a planar conductive base, the other ends converging at and forming the apex of an enclosed triangular area. Terminals are provided to connect the antenna with a receiver via lead means and jumper means so as to effectively provide a dual band function if required. At least one terminal is electrically and mechanically connected to the conductive base, the connection of the other is dependent upon the specific configuration of the base. The physical size of the antenna is extremely small, a practical size in application will be two to six inches in height.

Abstract: The antenna element, which is for use in television reception and the like, is manufactured from a single length of metallic bar or tubing which is bent to form the longitudinal edges of a regular eight face polyhedron, with the two ends of the length of metallic bar or tubing being bent outwardly parallel to each other at the bottom of the antenna element to constitute terminals. The antenna element has directional characteristics in four directions, in contrast to conventional antennas, such as dipole antennas or loop antennas, which have directional properties in only two directions, and can be miniaturized by utilizing known printed circuit manufacturing techniques. The antenna element has its best capacity when the length of each edge of the polyhedron is equal to one half the wavelength of an electromagnetic wave of a predetermined frequency.