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5341149 |
Antenna rod and procedure for manufacturing same
An antenna rod, comprises an antenna lead passing inside the rod and a layer of polymer material outside the antenna lead. The antenna rod has improved characteristic features because the antenna...
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5285212 |
Self-supporting columnar antenna array
A columnar antenna array. A printed circuit board has on one side thereof a plurality of etched dipoles arranged in a linear array. On an opposite side of the circuit board is an excitation network...
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5278562 |
Method and apparatus using photoresistive materials as switchable EMI barriers and shielding
A method and apparatus for providing a switchable electromagnetic interference (EMI) barrier. The method protects an object against electromagnetic radiation, through the steps of: providing an...
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5268702 |
P-type antenna module and method for manufacturing the same
A ground conducting layer and an antenna element conducting layer are set at a predetermined position in a cavity of a molding die, and molten resin is injected into the cavity, thereby molding a...
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5268699 |
Data communication receiver utilizing a loop antenna having a hinged connection
A substantially card shaped data communication receiver (100) for receiving radio frequency (RF) signals comprises receiver circuitry for recovering information included in the RF signals, an...
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5223851 |
Apparatus for facilitating interconnection of antenna lead wires to an integrated circuit and encapsulating the assembly to form an improved miniature transponder device
A method and apparatus for facilitating interconnection of antenna lead wires to an integrated circuit and encapsulating the assembly to form an improved miniature transponder device including the...
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5212495 |
Composite shell for protecting an antenna of a formation evaluation tool
A fiber reinforced polymer matrix composite shell for covering the elastomeric layer surrounding the antenna of a measurement-while-drilling borehole formation evaluation tool is disclosed. The...
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5184142 |
Automotive vehicle antenna
An automotive vehicle antenna comprises an outer cover having a cross section elongated in the direction of travel of the vehicle. The cover, which includes an enlarged section covering a loading...
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5157331 |
Enhanced wide aperture groove for antenna of downhole resistivity tool
In an electromagnetic propagating antenna circumferential groove disposed in an MWD resistivity tool mandrel and normally sealed with an epoxy resin non-conducting material forming an annular ring...
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5155493 |
Tape type microstrip patch antenna
Single or multiple players of electrically insulating tape have adhesive applied to one surface for the dielectric of the patch antenna. Electrically conductive foil tape with adhesive applied to...
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5103239 |
Silicon nitride articles with controlled multi-density regions
A monolithic silicon nitride radome structure having a forward portion, an after portion and a transition portion therebetween, is provided. The forward portion has a density of about 0.75 to 1.0...
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4983985 |
Cellular antenna
A cellular antenna including a matching transformer section connected to a substantially rectangular member of braid. An off-center feed provides for an omni-polar radiation.
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4933683 |
Jettison rain cover for intelligent weapons
A jettisoning cover for a munition arranged to be held against the end of a ring secured to the end of a munition which is fired at a high velocity through the atmosphere. The cover protects the...
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4899166 |
Self protected and transportable flat lattice antenna
A flat, self protected and transportable lattice is provided using a radiating structure formed of a three-plate line, with sources forming a lattice etched on one of the conducting planes. This...
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4879562 |
Slotted microstrip antenna with ferrite coating
A microstrip antenna is improved by applying a thin coating of ferrite maial to the surface of the metal ground plane of the antenna by flame spraying or arc plasma spraying. The applied ferrite...
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4859991 |
Electronic article surveillance system employing time domain and/or frequency domain analysis and computerized operation
A magnetic article surveillance system utilizing microcomputer control and unique time domain and frequency domain information gathering channels whose information is processed by the microcomputer...
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4847506 |
Hardening of spacecraft structures against momentary high level radiation exposure using a radiation shield
Objects, particularly spacecraft structures, antennas, solar arrays and other spacecraft equipment, are shielded against damage from momentary exposure to high energy electromagnetic radiation in...
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4816836 |
Conformal antenna and method
An antenna assembly and a method for mounting an antenna element in full conformity to a substantially curved surface are disclosed. The method includes the steps of providing a first, relatively...
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4792812 |
Microwave earth station with embedded receiver/transmitter and reflector
A low-cost, essentially self-contained microwave earth station having a reflector dish together with the microwave sensing/emitting elements embedded in a rigid, low density and low thermal...
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4783666 |
Protective shield for an antenna array
A protective shield for an electrically steered, high performance C Band antenna array is disclosed. The shield is of a multi-layer construction in which a sandwich is formed between two fiberglass...
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4761656 |
Passive marker device
A passive marker device including a tuned circuit enclosed in a housing which includes a base member with an upstanding rim with a cover member bonded to the rim and to a central portion of the...
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4733245 |
Cavity-backed slot antenna
An electrically-small, cavity-backed slot antenna includes an electrically conductive sheet having an elongated slot contained within the perimeter of the sheet backed by a cavity formed in an...
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4725395 |
Antenna and method of manufacturing an antenna
This antenna includes a helically formed wire coil having a lower end that is positioned in a connector a solid dielectric material is injection molded into the coil and connector to precisely...
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4725475 |
Multi-octave thick dielectric radome wall
A multi-octave thick dielectric radome wall which includes a dielectric slab having a pair of surfaces and a plurality of pyramidal-shaped dielectric elements mounted on at least one of the...
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4709240 |
Rugged multimode antenna
A compact antenna for an extra-atmospheric vehicle is sufficiently rugged to withstand the rigors of atmospheric re-entry, and is capable of transmitting and receiving radio-frequency signals with...
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4706050 |
Microstrip devices
A microstrip antenna or other microstrip device has a planar electrically-conductive region on the surface of a dielectric board. The device is tuned by silk-screen printing one or more layers of a...
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4697191 |
Omniazimuthal antenna
Disclosed herein is an antenna of simplified and integral construction which comprises a pair of electrical conductors defining a pair of antenna elements or arms aligned in substantially mutually...
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4695845 |
Theft-detection wafer attachment system including shield member
A theft-detection wafer attachment system that increases the tamper-resistance of theft-detection wafers used in the retail apparel industry includes a disc-like theft-detection wafer of the type...
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4689569 |
Directional antenna system for use in a borehole incorporating antenna dipole elements
For use in logging a borehole through various formations of the earth, the preferred and illustrated embodiment of an RF transmitter system including antenna placed in the sonde is disclosed. The...
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4682180 |
Multidirectional feed and flush-mounted surface wave antenna
The present invention relates to a multidirectional feed which can be used by itself or preferably incorporated within a surface wave structure to form a flush-mounted antenna on, for example, a...
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4623895 |
Flexible broadband UHF antenna
A compact lightweight flexible omnidirectional broadband UHF antenna of the fat monopole type is disclosed. The antenna comprises a braided copper sleeve molded inside a truncated cone of neoprene...
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4590614 |
Dipole antenna for portable radio
A dipole antenna for a portable radio is contained completely within the insulated housing (10) of the transceiver. The dipole antenna is formed as two conductive surfaces (12, 13) electrically...
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4546357 |
Furniture antenna system
An antenna system for an article of furniture in which a panel of the article of furniture is sealed by a low loss dielectric material to isolate the panel from impurities which affect its...
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4513290 |
Non-resonant coaxial monopole antenna
A relatively short broad band monopole coaxial antenna is provided with a center conductor and an outer radiator. The antenna is mounted above a ground plane and comprises a bare outer radiator...
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4500888 |
Antenna construction
A free standing antenna formed with an elongated tubular body portion, having one or more sections, and an enlarged base portion at its lower end for mounting thereof, and the body portion having a...
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4498086 |
Broad band liquid loaded dipole antenna
A broad band dipole antenna of short length is formed by two tubular linear radiators which are spaced apart at their adjacent inner ends. Each of the radiators is encased in an electrically...
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4460814 |
Oven antenna probe for distributing energy in microwave
Antenna for use with food product in a microwave oven, where one or more antennas are positioned into the food product for efficient and distributed heating of food product. The antenna includes a...
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4438437 |
Dual mode blade antenna
A printed circuit board includes first and second antenna elements spaced less than one-quarter wavelength apart and preferably one-eighth wavelength apart. Matching circuitry printed on the...
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4435713 |
Whip antenna construction
A whip antenna assembly of conductive cable, conductive base section, conductive protection knob and a environmental cover. The conductive antenna cable is constructed of multiple layers of brass...
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4388388 |
Method of forming metallic patterns on curved surfaces
A method of forming metallic patterns on a dielectric surface such as a radome surface that has a compound curve which includes the steps of coating the radome with a metal and then with a...
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4386354 |
Electromagnetic noise suppression
A method of reducing electromagnetic re-radiation of harmonic and intermodulation products by metal structures, having at least two adjoining elements, in response to an incident electromagnetic...
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4370658 |
Antenna apparatus and method for making same
An antenna structure having a generally planar member (23) in which an antenna conductor member (11) is encapsulated within an electrically insulating material. A first layer (23a) is formed from a...
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4366485 |
Concentric tube antenna encased in dielectric
An antenna comprises a conductor having two electrically connected sections spaced apart from each other by a dielectric material, and a directional coupler connected to the feed point, the...
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4334227 |
Electronic marker device and method of making same
Passive type electronic marker device is hoop shaped, with the hoop thickness in the radial direction being substantially less than the hoop width in the axial direction and with a tuned circuit...
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4300140 |
Coil loaded antenna embedded in glass fibre
A freestanding glass fibre antenna having at least two antenna sections, a lower section having a mounting base and a coupling at the upper end, and having linear radiating members of conductive...
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4274099 |
Random conductive roving reflective surfacing for antennas and guides
A radio frequency RF reflective surface of randomly deposited conductive roving lifted from the surface of a reflector mold after having been bonded with such as a polyester resin or epoxy resin....
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4274097 |
Embedded dielectric rod antenna
A compact, directional antenna element for achieving narrow beamwidths and ide bandwidths. The element is formed from a polyrod having a high dielectric constant embedded in a wave guide made of a...
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4246586 |
Radio antennae
This invention relates to radio antennae, and in particular to dielectric-clad antennae of the kind comprising a length of conductor the electrical length of which is effectively increased by a...
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4243992 |
Method and apparatus for fabricating a wideband whip antenna
A wideband whip antenna is fabricated by a method which enables the antenna o have a thinner profile, be lighter in weight, and much more flexible in that the radiating conductors are mounted in a...
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4242686 |
Three-dimensionally curved, knit wire electromagnetic wave reflector
An electrically conducting, electromagnetic wave reflector comprises a knit wire reflecting surface consisting of two superimposed knitted wire meshes. The wire mesh reflector is impregnated with a...
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