US20040233112A1 - Low cost antennas using conductive plastics or conductive composites - Google Patents

Low cost antennas using conductive plastics or conductive composites Download PDF

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Publication number
US20040233112A1
US20040233112A1 US10/877,092 US87709204A US2004233112A1 US 20040233112 A1 US20040233112 A1 US 20040233112A1 US 87709204 A US87709204 A US 87709204A US 2004233112 A1 US2004233112 A1 US 2004233112A1
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US
United States
Prior art keywords
conductive
resin
based material
loaded resin
conductive loaded
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US10/877,092
Inventor
Thomas Aisenbrey
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Integral Technologies Inc
Original Assignee
Integral Technologies Inc
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Filing date
Publication date
Priority claimed from US10/075,778 external-priority patent/US6741221B2/en
Application filed by Integral Technologies Inc filed Critical Integral Technologies Inc
Priority to US10/877,092 priority Critical patent/US20040233112A1/en
Publication of US20040233112A1 publication Critical patent/US20040233112A1/en
Priority to US11/060,274 priority patent/US7198735B2/en
Priority to US11/060,275 priority patent/US7182889B2/en
Priority to US11/083,467 priority patent/US20050208251A1/en
Priority to US11/083,468 priority patent/US20050178496A1/en
Priority to US11/083,598 priority patent/US20050160547A1/en
Priority to US11/083,599 priority patent/US20050161142A1/en
Priority to US11/086,852 priority patent/US20050167931A1/en
Priority to US11/086,853 priority patent/US20050167133A1/en
Priority to US11/089,293 priority patent/US20050200329A1/en
Priority to US11/089,292 priority patent/US20050162133A1/en
Priority to US11/096,176 priority patent/US20050172950A1/en
Priority to US11/095,871 priority patent/US20050205551A1/en
Priority to US11/096,821 priority patent/US20050167188A1/en
Priority to US11/096,632 priority patent/US20050167873A1/en
Priority to US11/096,822 priority patent/US20050167189A1/en
Priority to US11/096,608 priority patent/US20050202296A1/en
Priority to PCT/US2005/011943 priority patent/WO2005118244A2/en
Priority to US11/121,680 priority patent/US20050212161A1/en
Priority to US11/121,378 priority patent/US20050202160A1/en
Priority to US11/121,376 priority patent/US20050200041A1/en
Priority to US11/121,361 priority patent/US20050204548A1/en
Priority to US11/121,377 priority patent/US20050200136A1/en
Priority to US11/121,666 priority patent/US7273135B2/en
Priority to US11/121,379 priority patent/US7316838B2/en
Priority to US11/121,362 priority patent/US7425885B2/en
Priority to US11/121,667 priority patent/US20050191788A1/en
Priority to US11/121,681 priority patent/US20050208246A1/en
Priority to US11/125,989 priority patent/US7432448B2/en
Priority to US11/127,578 priority patent/US8268222B2/en
Priority to US11/127,573 priority patent/US20050206028A1/en
Priority to US11/127,571 priority patent/US20050208746A1/en
Priority to US11/127,574 priority patent/US7268461B2/en
Priority to US11/131,525 priority patent/US7223144B2/en
Priority to US11/131,523 priority patent/US7224108B2/en
Priority to US11/138,858 priority patent/US20050236407A1/en
Priority to US11/138,796 priority patent/US20050236406A1/en
Priority to US11/143,427 priority patent/US20050225485A1/en
Priority to US11/143,799 priority patent/US20060000590A1/en
Priority to US11/143,426 priority patent/US7829006B2/en
Priority to US11/148,064 priority patent/US20050230867A1/en
Priority to US11/148,044 priority patent/US7726440B2/en
Priority to US11/180,015 priority patent/US20050263124A1/en
Priority to US11/179,213 priority patent/US20050271838A1/en
Priority to US11/179,992 priority patent/US20050269727A1/en
Priority to US11/181,241 priority patent/US20050263935A1/en
Priority to US11/225,362 priority patent/US7658663B2/en
Priority to US11/227,849 priority patent/US20080036241A1/en
Priority to US11/284,005 priority patent/US7549521B2/en
Priority to US11/286,227 priority patent/US7268562B2/en
Priority to US11/313,015 priority patent/US7708920B2/en
Priority to US11/328,553 priority patent/US20060114169A1/en
Priority to US11/328,977 priority patent/US7339146B2/en
Priority to US11/335,363 priority patent/US20060128895A1/en
Priority to US11/335,362 priority patent/US20060137688A1/en
Priority to US11/346,051 priority patent/US20060138646A1/en
Priority to US11/378,061 priority patent/US20060174753A1/en
Priority to US11/496,098 priority patent/US20060287126A1/en
Priority to US11/983,363 priority patent/US20080063864A1/en
Priority to US12/807,447 priority patent/US20100326236A1/en
Priority to US13/572,211 priority patent/US20130031774A1/en
Priority to US14/278,837 priority patent/US20140246800A1/en
Priority to US14/293,315 priority patent/US20140272117A1/en
Priority to US14/308,189 priority patent/US20140290430A1/en
Priority to US14/326,542 priority patent/US20140322532A1/en
Abandoned legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/0013—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor using fillers dispersed in the moulding material, e.g. metal particles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
    • H01Q13/08—Radiating ends of two-conductor microwave transmission lines, e.g. of coaxial lines, of microstrip lines
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
    • G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
    • G06K19/077—Constructional details, e.g. mounting of circuits in the carrier
    • G06K19/07749—Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/1271—Supports; Mounting means for mounting on windscreens
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
    • H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/40—Radiating elements coated with or embedded in protective material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/16—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/30—Resonant antennas with feed to end of elongated active element, e.g. unipole
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K3/00—Apparatus or processes for manufacturing printed circuits
    • H05K3/10—Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern
    • H05K3/101—Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern by casting or moulding of conductive material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/0001—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor characterised by the choice of material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0003—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds having particular electrical or magnetic properties, e.g. piezoelectric
    • B29K2995/0005—Conductive
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/34—Electrical apparatus, e.g. sparking plugs or parts thereof
    • B29L2031/3456—Antennas, e.g. radomes
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • H05K1/09—Use of materials for the conductive, e.g. metallic pattern
    • H05K1/092—Dispersed materials, e.g. conductive pastes or inks
    • H05K1/095—Dispersed materials, e.g. conductive pastes or inks for polymer thick films, i.e. having a permanent organic polymeric binder
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/02—Fillers; Particles; Fibers; Reinforcement materials
    • H05K2201/0275—Fibers and reinforcement materials
    • H05K2201/0281—Conductive fibers
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/09—Shape and layout
    • H05K2201/09009—Substrate related
    • H05K2201/09118—Moulded substrate
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2203/00—Indexing scheme relating to apparatus or processes for manufacturing printed circuits covered by H05K3/00
    • H05K2203/01—Tools for processing; Objects used during processing
    • H05K2203/0104—Tools for processing; Objects used during processing for patterning or coating
    • H05K2203/0113—Female die used for patterning or transferring, e.g. temporary substrate having recessed pattern
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K3/00—Apparatus or processes for manufacturing printed circuits
    • H05K3/10—Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern
    • H05K3/107—Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern by filling grooves in the support with conductive material

Definitions

  • This invention relates to antennas formed of conductive loaded resin-based materials comprising micron conductive powders or micron conductive fibers.
  • Antennas are an essential part of electronic communication systems that contain wireless links. Low cost antennas offer significant advantages for these systems.
  • U.S. Pat. No. 5,771,027 to Marks et al. describes a composite antenna having a grid comprised of electrical conductors woven into the warp of a resin reinforced cloth forming one layer of a multi-layer laminate structure of an antenna.
  • Antennas are essential in any electronic systems containing wireless links. Such applications as communications and navigation require reliable sensitive antennas. Antennas are typically fabricated from metal antenna elements in a wide variety of configurations. Lowering the cost of antenna materials or production costs in fabrication of antennas offers significant advantages for any applications utilizing antennas.
  • These objectives are achieved by fabricating the antenna elements and ground planes from conductive loaded resin-based materials. These materials are resins loaded with conductive materials to provide a resin-based material which is a conductor rather than an insulator. The resins provide the structural material which, when loaded with micron conductive powders or micron conductive fibers, become composites which are conductors rather than insulators.
  • Antenna elements are fabricated from the conductive loaded resins. Almost any type of antenna can be fabricated from the conductive loaded resin-based materials, such as dipole antennas, monopole antennas, planar antennas or the like. These antennas can be tuned to a desired frequency range.
  • the antennas can be molded or extruded to provide the desired shape.
  • the conductive loaded resin-based materials can be cut, injection molded, over-molded, laminated, extruded, milled or the like to provide the desired antenna shape and size.
  • the antenna characteristics depend on the composition of the conductive loaded resin-based materials, which can be adjusted to aid in achieving the desired antenna characteristics.
  • Virtually any antenna fabricated by conventional means such as wire, strip-line, printed circuit boards, or the like can be fabricated using the conductive loaded resin-based materials.
  • FIG. 1 shows a perspective view of a dipole antenna formed from a conductive loaded resin-based material.
  • FIG. 2A shows a front view of the dipole antenna of FIG. 1 showing insulating material between the radiating antenna element and a ground plane.
  • FIG. 2B shows a front view of the dipole antenna of FIG. 1 showing insulating material between both the radiating antenna element and the counterpoise antenna element and a ground plane.
  • FIG. 2C shows an amplifier inserted between the radiating antenna element and the coaxial cable center conductor for the dipole antenna of FIG. 1.
  • FIG. 3 shows a segment of an antenna element formed from a conductive loaded resin-based material showing a metal insert for connecting to conducting cable elements.
  • FIG. 4A shows a perspective view of a patch antenna comprising a radiating antenna element and a ground plane with the coaxial cable entering through the ground plane.
  • FIG. 4B shows a perspective view of a patch antenna comprising a radiating antenna element and a ground plane with the coaxial cable entering between the ground plane and the radiating antenna element.
  • FIG. 5 shows an amplifier inserted between the radiating antenna element and the coaxial cable center conductor for the patch antenna of FIGS. 4A and 4B.
  • FIG. 6 shows a perspective view of a monopole antenna formed from a conductive loaded resin-based material.
  • FIG. 7 shows a perspective view of a monopole antenna formed from a conductive loaded resin-based material with an amplifier between the radiating antenna element and the coaxial cable center conductor.
  • FIG. 8A shows a top view of an antenna having a single L shaped antenna element formed from a conductive loaded resin-based material.
  • FIG. 8B shows a cross section view of the antenna element of FIG. 8A taken along line 8 B- 8 B′ of FIG. 8A.
  • FIG. 8C shows a cross section view of the antenna element of FIG. 8A taken along line 8 C- 8 C′ of FIG. 8A.
  • FIG. 9A shows a top view of an antenna formed from a conductive loaded resin-based material embedded in an automobile bumper.
  • FIG. 9B shows a front view of an antenna formed from a conductive loaded resin-based material embedded in an automobile bumper formed of an insulator such as rubber.
  • FIG. 10A shows a schematic view of an antenna formed from a conductive loaded resin-based material embedded in the molding of a vehicle window.
  • FIG. 10B shows a schematic view of an antenna formed from a conductive loaded resin-based material embedded in the plastic case of a portable electronic device.
  • FIG. 11 shows a cross section view of a conductive loaded resin-based material comprising a powder of conductor materials.
  • FIG. 12 shows a cross section view of a conductive loaded resin-based material comprising conductor fibers.
  • FIG. 13 shows a simplified schematic view of an apparatus for forming injection molded antenna elements.
  • FIG. 14 shows a simplified schematic view of an apparatus for forming extruded antenna elements.
  • FIG. 15A shows a top view of fibers of conductive loaded resin-based material webbed into a conductive fabric.
  • FIG. 15B shows a top view of fibers of conductive loaded resin-based material woven into a conductive fabric.
  • the following embodiments are examples of antennas fabricated using conductive loaded resin-based materials.
  • ground planes are also used and these ground planes can be formed of either conductive loaded resin-based materials or metals.
  • the use of these conductive loaded resin-based materials in antenna fabrication significantly lowers the cost of materials and manufacturing processes used in the assembly antennas and the ease of forming these materials into the desired shapes. These materials can be used to form either receiving or transmitting antennas.
  • the antennas and/or ground planes can be formed using methods such as injection molding, overmolding, or extrusion of the conductive loaded resin-based materials.
  • the conductive loaded resin-based materials typically but not exclusively have a conductivity of between about 5 and 25 ohms per square.
  • the antenna elements, used to form the antennas are formed of the conductive loaded resin-based materials and can be formed using methods such as injection molding, overmolding, or extrusion.
  • the antenna elements can also be stamped to produce the desired shape.
  • the conductive loaded resin-based material antenna elements can also cut or milled as desired.
  • the conductive loaded resin-based materials comprise micron conductive powders or fibers loaded in a structural resin.
  • the micron conductive powders are formed of metals such as nickel, copper, silver or the like.
  • the micron conductive fibers can be nickel plated carbon fiber, stainless steel fiber, copper fiber, silver fiber, or the like.
  • the structural material is a material such as a polymer resin.
  • Structural material can be, here given as examples and not as an exhaustive list, polymer resins produced by GE PLASTICS, Pittsfield, Mass., a range of other plastics produced by GE PLASTICS, Pittsfield, Mass., a range of other plastics produced by other manufacturers, silicones produced by GE SILICONES, Waterford, N.Y., or other flexible resin-based rubber compounds produced by other manufacturers.
  • the resin-based structural material loaded with micron conductive powders or fibers can be molded, using a method such as injection molding, overmolding, or extruded to the desired shape.
  • the conductive loaded resin-based materials can be cut or milled as desired to form the desired shape of the antenna elements.
  • the composition of the composite materials can affect the antenna characteristics and must be properly controlled.
  • the composite could also be in the family of polyesters with woven or webbed micron stainless steel fibers or other micron conductive fibers forming a cloth like material which, when properly designed in metal content and shape, can be used to realize a very high performance cloth antenna.
  • Such a cloth antenna could be embedded in a persons clothing as well as in insulating materials such as rubber or plastic.
  • the woven or webbed conductive cloths could also be laminated to materials such as Teflon, FR-4, or any resin-based hard material.
  • FIG. 1 shows a perspective drawing of a dipole antenna with a radiating antenna element 12 and a counterpoise antenna element 10 formed from conductive loaded resin-based materials.
  • the antenna comprises a radiating antenna element 12 and a counterpoise antenna element 10 each having a length 24 and a rectangular cross section perpendicular to the length 24 .
  • the length 24 is greater than three multiplied by the square root of the cross sectional area.
  • the center conductor 14 of a coaxial cable 50 is electrically connected to the radiating antenna element 12 using a metal insert 15 formed in the radiating antenna element 12 .
  • the shield 52 of the coaxial cable 50 is connected to the counterpoise antenna element 10 using a metal insert formed in the counterpoise antenna element 10 .
  • the metal insert in the counterpoise antenna element 10 is not visible in FIG. 1 but is the same as the metal insert 15 in the radiating antenna element 12 .
  • the length 24 is a multiple of a quarter wavelength of the optimum frequency of detection or transmission of the antenna.
  • the impedance of the antenna at resonance should be very nearly equal to the impedance of the coaxial cable 50 to assure maximum power transfer between cable and antenna.
  • FIG. 3 shows a detailed view of a metal insert 15 formed in a segment 11 of an antenna element.
  • the metal insert can be copper or other metal.
  • a screw 17 can be used in the metal insert 15 to aid in electrical connections. Soldering or other electrical connection methods can also be used.
  • FIG. 1 shows an example of a dipole antenna with the radiating antenna element 12 placed on a layer of insulating material 22 , which is placed on a ground plane 20 , and the counterpoise antenna element 10 placed directly on the ground plane 20 .
  • the ground plane 20 is optional and if the ground plane is not used the layer of insulating material 22 may not be necessary.
  • the counterpoise antenna element 10 can also be placed on a layer of insulating material 22 , see FIG. 2A. If the ground plane 20 is used it can also be formed of the conductive loaded resin-based materials.
  • FIG. 2A shows a front view of the dipole antenna of FIG. 1 for the example of an antenna using a ground plane 20 , a layer of insulating material 22 between the radiating antenna element 12 and the ground plane 20 , and the counterpoise antenna element 10 placed directly on the ground plane 20 .
  • FIG. 2B shows a front view of the dipole antenna of FIG. 1 for the example of an antenna using a ground plane 20 and a layer of insulating material 22 between both the radiating antenna element 12 and the counterpoise antenna element 10 .
  • an amplifier 72 can be inserted between the center conductor 14 of the coaxial cable and the radiating antenna element 12 .
  • a wire 70 connects metal insert 15 in the radiating antenna element 12 to the amplifier 72 .
  • the input of the amplifier 72 is connected to the radiating antenna element 12 and the output of the amplifier 72 is connected to the center conductor 14 of the coaxial cable 50 .
  • the output of the amplifier 72 is connected to the radiating antenna element 12 and the input of the amplifier 72 is connected to the center conductor 14 of the coaxial cable 50 .
  • the length 24 is about 1.5 inches with a square cross section of about 0.09 square inches.
  • This antenna had a center frequency of about 900 MHz.
  • FIGS. 4A and 4B show perspective views of a patch antenna with a radiating antenna element 40 and a ground plane 42 formed from conductive loaded resin-based materials.
  • the antenna comprises a radiating antenna element 40 and a ground plane 42 each having the shape of a rectangular plate with a thickness 44 and a separation between the plates 46 provided by insulating standoffs 60 .
  • the square root of the area of the rectangular square plate forming the radiating antenna element 40 is greater than three multiplied by the thickness 44 .
  • the patch antenna provided good performance at Global Position System, GPS, frequencies of about 1.5 MHz.
  • FIG. 4A shows an example of the patch antenna where the coaxial cable 50 enters through the ground plane 42 .
  • the coaxial cable shield 52 is connected to the ground plane 42 by means of a metal insert 15 in the ground plane.
  • the coaxial cable center conductor 14 is connected to the radiating antenna element 40 by means of a metal insert 15 in the radiating antenna element 40 .
  • FIG. 4B shows an example of the patch antenna where the coaxial cable 50 enters between the radiating antenna element 40 and the ground plane 42 .
  • the coaxial cable shield 52 is connected to the ground plane 42 by means of a metal insert 15 in the ground plane 42 .
  • the coaxial cable center conductor 14 is connected to the radiating antenna element 40 by means of a metal insert 15 in the radiating antenna element 40 .
  • an amplifier 72 can be inserted between the coaxial cable center conductor 14 and the radiating antenna element 40 .
  • a wire 70 connects the amplifier 72 to the metal insert 15 in the radiating antenna element 40 .
  • the input of the amplifier 72 is connected to the radiating antenna element 40 and the output of the amplifier 72 is connected to the center conductor 14 of the coaxial cable 50 .
  • the output of the amplifier 72 is connected to the radiating antenna element 40 and the input of the amplifier 72 is connected to the center conductor 14 of the coaxial cable 50 .
  • FIG. 6 shows an example of a monopole antenna having a radiating antenna element 64 , having a height 71 , arranged perpendicular to a ground plane 68 .
  • the radiating antenna element 64 and the ground plane 68 are formed of conductive plastic or conductive composite materials.
  • a layer of insulating material 66 separates the radiating antenna element 64 from the ground plane 68 .
  • the height 71 of the radiating antenna element 64 is greater than three times the square root of the cross sectional area of the radiating antenna element 64 .
  • An example of this antenna with a height 71 of 1.17 inches performed well at GPS frequencies of about 1.5 GHz.
  • FIG. 7 shows an example of the monopole antenna described above with an amplifier 72 inserted between the center conductor 14 of the coaxial cable 50 and the radiating antenna element 64 .
  • the input of the amplifier 72 is connected to the radiating antenna element 64 and the output of the amplifier 72 is connected to the center conductor 14 of the coaxial cable 50 .
  • the output of the amplifier 72 is connected to the radiating antenna element 64 and the input of the amplifier 72 is connected to the center conductor 14 of the coaxial cable 5 . 0 .
  • FIGS. 8A, 8B, and 8 C shows an example of an L shaped antenna having a radiating antenna element 80 over a ground plane 98 .
  • the radiating antenna element 80 and the ground plane 98 are formed of conductive loaded resin-based materials.
  • a layer of insulating material 96 separates the radiating antenna element 64 from the ground plane 98 .
  • the radiating antenna element 80 is made up of a first leg 82 and a second leg 84 .
  • FIG. 8A shows a top view of the antenna.
  • FIG. 8B shows a cross section of the first leg 82 .
  • FIG. 8C shows a cross section of the second leg 84 .
  • FIGS. 8B and 8C show the ground plane 98 and the layer of insulating material 96 .
  • the cross sectional area of the first leg 82 and the second leg 84 need not be the same. Antennas of this type may be typically built using overmolding technique to join the conductive resin-based material to the insul
  • FIGS. 9A and 9B show a dipole antenna, formed of conductive loaded resin-based materials, embedded in an automobile bumper 100 , formed of insulating material.
  • the dipole antenna has a radiating antenna element 102 and a counterpoise antenna element 104 .
  • FIG. 9A shows the top view of the bumper 100 with the embedded antenna.
  • FIG. 9B shows the front view of the bumper 100 with the embedded antenna.
  • the antennas of this invention can be used for a number of additional applications.
  • Antennas of this type can be embedded in the molding of a window of a vehicle, such as an automobile or an airplane.
  • FIG. 10A shows a schematic view of such a window 106 .
  • the antenna 110 can be embedded in the molding 108 .
  • Antennas of this type can be embedded in the plastic housing, or be part of the plastic shell itself, of portable electronic devices such as cellular phones, personal computers, or the like.
  • FIG. 10B shows a schematic view of a segment 112 of such a plastic housing with the antenna 110 embedded in the housing 112 .
  • the conductive loaded resin-based material typically comprises a powder of conductor particles or a fiber of a conductor material in a resin or plastic host.
  • FIG. 11 shows cross section view of an example of conductor loaded resin-based material 212 having powder of conductor particles 202 in a resin or plastic host 204 .
  • the diameter 200 of the of the conductor particles 202 in the powder is between about 3 and 11 microns.
  • FIG. 12 shows a cross section view of an example of conductor loaded resin-based material 212 having conductor fibers 210 in a resin or plastic host 204 .
  • the conductor fibers 210 have a diameter of between about 3 and 11 microns and a length of between about 5 and 10 millimeters.
  • the conductors used for these conductor particles 202 or conductor fibers 210 can stainless steel, nickel, copper, silver, or other suitable metals. These conductor particles or fibers are embedded in a resin which in turn is embedded in a plastic host. As previously mentioned, the conductive loaded resin-based materials have a conductivity of between about 5 and 25 ohms per square. To realize this conductivity the ratio of the weight of the conductor material, in this example the conductor particles 202 or conductor fibers 210 , to the weight of the resin or plastic host 204 is between about 0.20 and 0.40.
  • FIG. 13 shows a simplified schematic diagram of an injection mold showing a lower portion 230 and upper portion 231 of the mold. Uncured conductive loaded resin-based material is injected into the mold cavity 237 through an injection opening 235 and cured. The upper portion 231 and lower portion 230 of the mold are then separated and the cured antenna element is removed.
  • FIG. 14 shows a simplified schematic diagram of an extruder for forming antenna elements using extrusion.
  • Uncured conductive loaded resin-based material is placed in the cavity 239 of the extrusion unit 234 .
  • a piston 236 or other means is then used to force the uncured conductive loaded resin-based material through an extrusion opening 240 which shapes the partially cured conductive loaded resin-based material to the desired shape.
  • the conductive loaded resin-based material is then fully cured and is ready for use.
  • the conductive loaded resin based material can be formed into fibers which are woven or webbed into a conductive fabric.
  • FIG. 15A shows a webbed conductive fabric 230 .
  • FIG. 15B shows a webbed conductive fabric 232 .
  • This conductive fabric, 230 and/or 232 can be very thin and cut into desired shapes to form antenna elements. These antenna elements can take the shape of a host and attached as desired.
  • Antennas formed from the conductive loaded resin-based materials can be designed to work at frequencies from about 2 Kilohertz to about 300 Gigahertz.

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Abstract

Low cost antennas formed of a conductive loaded resin-based material. The conductive loaded resin-based material comprises conductor fibers or conductor particles in a resin or plastic host wherein the ratio of the weight of the conductor fibers or conductor particles to the weight of the resin or plastic host is between about 0.20 and 0.40. The conductive fibers can be stainless steel, nickel, copper, silver, or the like. The antenna elements can be formed using methods such as injection molding or extrusion. Virtually any antenna fabricated by conventional means such as wire, strip-line, printed circuit boards, or the like can be fabricated using the conductive loaded resin-based materials. The conductive loaded resin-based material used to form the antenna elements can be in the form of a thin flexible woven fabric which can readily cut to the desired shape.

Description

  • This patent application is a Continuation In Part of application Ser. No. 10/075,778, filed Feb. 14, 2002.[0001]
    • BACKGROUND OF THE INVENTION
  • (1) Field of the Invention [0002]
  • This invention relates to antennas formed of conductive loaded resin-based materials comprising micron conductive powders or micron conductive fibers. [0003]
  • (2) Description of the Related Art [0004]
  • Antennas are an essential part of electronic communication systems that contain wireless links. Low cost antennas offer significant advantages for these systems. [0005]
  • U.S. Pat. No. 5,771,027 to Marks et al. describes a composite antenna having a grid comprised of electrical conductors woven into the warp of a resin reinforced cloth forming one layer of a multi-layer laminate structure of an antenna. [0006]
  • U.S. Pat. No. 6,249,261 B1 to Solberg, Jr. et al. describes a direction-finding material constructed from polymer composite materials which are electrically conductive. [0007]
    • SUMMARY OF THE INVENTION
  • Antennas are essential in any electronic systems containing wireless links. Such applications as communications and navigation require reliable sensitive antennas. Antennas are typically fabricated from metal antenna elements in a wide variety of configurations. Lowering the cost of antenna materials or production costs in fabrication of antennas offers significant advantages for any applications utilizing antennas. [0008]
  • It is a principle objective of this invention to provide antennas fabricated from conductive loaded resin-based materials. [0009]
  • It is another principle objective of this invention to provide antennas having two antenna elements fabricated from conductive loaded resin-based materials. [0010]
  • It is another principle objective of this invention to provide antennas having an antenna element and a ground plane fabricated from conductive loaded resin-based materials. [0011]
  • It is another principle objective of this invention to provide a method of forming antennas from conductive loaded resin-based materials. [0012]
  • These objectives are achieved by fabricating the antenna elements and ground planes from conductive loaded resin-based materials. These materials are resins loaded with conductive materials to provide a resin-based material which is a conductor rather than an insulator. The resins provide the structural material which, when loaded with micron conductive powders or micron conductive fibers, become composites which are conductors rather than insulators. [0013]
  • Antenna elements are fabricated from the conductive loaded resins. Almost any type of antenna can be fabricated from the conductive loaded resin-based materials, such as dipole antennas, monopole antennas, planar antennas or the like. These antennas can be tuned to a desired frequency range. [0014]
  • The antennas can be molded or extruded to provide the desired shape. The conductive loaded resin-based materials can be cut, injection molded, over-molded, laminated, extruded, milled or the like to provide the desired antenna shape and size. The antenna characteristics depend on the composition of the conductive loaded resin-based materials, which can be adjusted to aid in achieving the desired antenna characteristics. Virtually any antenna fabricated by conventional means such as wire, strip-line, printed circuit boards, or the like can be fabricated using the conductive loaded resin-based materials. [0015]
    • BRIEF DESCRIPTION OF THE DRAWINGS
  • FIG. 1 shows a perspective view of a dipole antenna formed from a conductive loaded resin-based material. [0016]
  • FIG. 2A shows a front view of the dipole antenna of FIG. 1 showing insulating material between the radiating antenna element and a ground plane. [0017]
  • FIG. 2B shows a front view of the dipole antenna of FIG. 1 showing insulating material between both the radiating antenna element and the counterpoise antenna element and a ground plane. [0018]
  • FIG. 2C shows an amplifier inserted between the radiating antenna element and the coaxial cable center conductor for the dipole antenna of FIG. 1. [0019]
  • FIG. 3 shows a segment of an antenna element formed from a conductive loaded resin-based material showing a metal insert for connecting to conducting cable elements. [0020]
  • FIG. 4A shows a perspective view of a patch antenna comprising a radiating antenna element and a ground plane with the coaxial cable entering through the ground plane. [0021]
  • FIG. 4B shows a perspective view of a patch antenna comprising a radiating antenna element and a ground plane with the coaxial cable entering between the ground plane and the radiating antenna element. [0022]
  • FIG. 5 shows an amplifier inserted between the radiating antenna element and the coaxial cable center conductor for the patch antenna of FIGS. 4A and 4B. [0023]
  • FIG. 6 shows a perspective view of a monopole antenna formed from a conductive loaded resin-based material. [0024]
  • FIG. 7 shows a perspective view of a monopole antenna formed from a conductive loaded resin-based material with an amplifier between the radiating antenna element and the coaxial cable center conductor. [0025]
  • FIG. 8A shows a top view of an antenna having a single L shaped antenna element formed from a conductive loaded resin-based material. [0026]
  • FIG. 8B shows a cross section view of the antenna element of FIG. 8A taken along [0027] line 8B-8B′ of FIG. 8A.
  • FIG. 8C shows a cross section view of the antenna element of FIG. 8A taken along [0028] line 8C-8C′ of FIG. 8A.
  • FIG. 9A shows a top view of an antenna formed from a conductive loaded resin-based material embedded in an automobile bumper. [0029]
  • FIG. 9B shows a front view of an antenna formed from a conductive loaded resin-based material embedded in an automobile bumper formed of an insulator such as rubber. [0030]
  • FIG. 10A shows a schematic view of an antenna formed from a conductive loaded resin-based material embedded in the molding of a vehicle window. [0031]
  • FIG. 10B shows a schematic view of an antenna formed from a conductive loaded resin-based material embedded in the plastic case of a portable electronic device. [0032]
  • FIG. 11 shows a cross section view of a conductive loaded resin-based material comprising a powder of conductor materials. [0033]
  • FIG. 12 shows a cross section view of a conductive loaded resin-based material comprising conductor fibers. [0034]
  • FIG. 13 shows a simplified schematic view of an apparatus for forming injection molded antenna elements. [0035]
  • FIG. 14 shows a simplified schematic view of an apparatus for forming extruded antenna elements. [0036]
  • FIG. 15A shows a top view of fibers of conductive loaded resin-based material webbed into a conductive fabric. [0037]
  • FIG. 15B shows a top view of fibers of conductive loaded resin-based material woven into a conductive fabric. [0038]
    • DESCRIPTION OF THE PREFERRED EMBODIMENTS
  • The following embodiments are examples of antennas fabricated using conductive loaded resin-based materials. In some of the examples ground planes are also used and these ground planes can be formed of either conductive loaded resin-based materials or metals. The use of these conductive loaded resin-based materials in antenna fabrication significantly lowers the cost of materials and manufacturing processes used in the assembly antennas and the ease of forming these materials into the desired shapes. These materials can be used to form either receiving or transmitting antennas. The antennas and/or ground planes can be formed using methods such as injection molding, overmolding, or extrusion of the conductive loaded resin-based materials. [0039]
  • The conductive loaded resin-based materials typically but not exclusively have a conductivity of between about 5 and 25 ohms per square. The antenna elements, used to form the antennas, are formed of the conductive loaded resin-based materials and can be formed using methods such as injection molding, overmolding, or extrusion. The antenna elements can also be stamped to produce the desired shape. The conductive loaded resin-based material antenna elements can also cut or milled as desired. [0040]
  • The conductive loaded resin-based materials comprise micron conductive powders or fibers loaded in a structural resin. The micron conductive powders are formed of metals such as nickel, copper, silver or the like. The micron conductive fibers can be nickel plated carbon fiber, stainless steel fiber, copper fiber, silver fiber, or the like. The structural material is a material such as a polymer resin. Structural material can be, here given as examples and not as an exhaustive list, polymer resins produced by GE PLASTICS, Pittsfield, Mass., a range of other plastics produced by GE PLASTICS, Pittsfield, Mass., a range of other plastics produced by other manufacturers, silicones produced by GE SILICONES, Waterford, N.Y., or other flexible resin-based rubber compounds produced by other manufacturers. The resin-based structural material loaded with micron conductive powders or fibers can be molded, using a method such as injection molding, overmolding, or extruded to the desired shape. The conductive loaded resin-based materials can be cut or milled as desired to form the desired shape of the antenna elements. The composition of the composite materials can affect the antenna characteristics and must be properly controlled. The composite could also be in the family of polyesters with woven or webbed micron stainless steel fibers or other micron conductive fibers forming a cloth like material which, when properly designed in metal content and shape, can be used to realize a very high performance cloth antenna. Such a cloth antenna could be embedded in a persons clothing as well as in insulating materials such as rubber or plastic. The woven or webbed conductive cloths could also be laminated to materials such as Teflon, FR-4, or any resin-based hard material. [0041]
  • Refer now to FIGS. 1-10B for examples of antennas fabricated using conductive loaded resin-based materials. These antennas can be either receiving or transmitting antennas. FIG. 1 shows a perspective drawing of a dipole antenna with a radiating [0042] antenna element 12 and a counterpoise antenna element 10 formed from conductive loaded resin-based materials. The antenna comprises a radiating antenna element 12 and a counterpoise antenna element 10 each having a length 24 and a rectangular cross section perpendicular to the length 24. The length 24 is greater than three multiplied by the square root of the cross sectional area. The center conductor 14 of a coaxial cable 50,is electrically connected to the radiating antenna element 12 using a metal insert 15 formed in the radiating antenna element 12. The shield 52 of the coaxial cable 50 is connected to the counterpoise antenna element 10 using a metal insert formed in the counterpoise antenna element 10. The metal insert in the counterpoise antenna element 10 is not visible in FIG. 1 but is the same as the metal insert 15 in the radiating antenna element 12. The length 24 is a multiple of a quarter wavelength of the optimum frequency of detection or transmission of the antenna. The impedance of the antenna at resonance should be very nearly equal to the impedance of the coaxial cable 50 to assure maximum power transfer between cable and antenna.
  • FIG. 3 shows a detailed view of a [0043] metal insert 15 formed in a segment 11 of an antenna element. The metal insert can be copper or other metal. A screw 17 can be used in the metal insert 15 to aid in electrical connections. Soldering or other electrical connection methods can also be used.
  • FIG. 1 shows an example of a dipole antenna with the radiating [0044] antenna element 12 placed on a layer of insulating material 22, which is placed on a ground plane 20, and the counterpoise antenna element 10 placed directly on the ground plane 20. The ground plane 20 is optional and if the ground plane is not used the layer of insulating material 22 may not be necessary. As another option the counterpoise antenna element 10 can also be placed on a layer of insulating material 22, see FIG. 2A. If the ground plane 20 is used it can also be formed of the conductive loaded resin-based materials.
  • FIG. 2A shows a front view of the dipole antenna of FIG. 1 for the example of an antenna using a [0045] ground plane 20, a layer of insulating material 22 between the radiating antenna element 12 and the ground plane 20, and the counterpoise antenna element 10 placed directly on the ground plane 20. FIG. 2B shows a front view of the dipole antenna of FIG. 1 for the example of an antenna using a ground plane 20 and a layer of insulating material 22 between both the radiating antenna element 12 and the counterpoise antenna element 10.
  • As shown in FIG. 2C, an [0046] amplifier 72 can be inserted between the center conductor 14 of the coaxial cable and the radiating antenna element 12. A wire 70 connects metal insert 15 in the radiating antenna element 12 to the amplifier 72. For receiving antennas the input of the amplifier 72 is connected to the radiating antenna element 12 and the output of the amplifier 72 is connected to the center conductor 14 of the coaxial cable 50. For transmitting antennas the output of the amplifier 72 is connected to the radiating antenna element 12 and the input of the amplifier 72 is connected to the center conductor 14 of the coaxial cable 50.
  • In one example of this antenna the [0047] length 24 is about 1.5 inches with a square cross section of about 0.09 square inches. This antenna had a center frequency of about 900 MHz.
  • FIGS. 4A and 4B show perspective views of a patch antenna with a radiating [0048] antenna element 40 and a ground plane 42 formed from conductive loaded resin-based materials. The antenna comprises a radiating antenna element 40 and a ground plane 42 each having the shape of a rectangular plate with a thickness 44 and a separation between the plates 46 provided by insulating standoffs 60. The square root of the area of the rectangular square plate forming the radiating antenna element 40 is greater than three multiplied by the thickness 44. In one example of this antenna wherein the rectangular plate is a square with sides of 1.4 inches and a thickness of 0.41 inches the patch antenna provided good performance at Global Position System, GPS, frequencies of about 1.5 MHz.
  • FIG. 4A shows an example of the patch antenna where the [0049] coaxial cable 50 enters through the ground plane 42. The coaxial cable shield 52 is connected to the ground plane 42 by means of a metal insert 15 in the ground plane. The coaxial cable center conductor 14 is connected to the radiating antenna element 40 by means of a metal insert 15 in the radiating antenna element 40. FIG. 4B shows an example of the patch antenna where the coaxial cable 50 enters between the radiating antenna element 40 and the ground plane 42. The coaxial cable shield 52 is connected to the ground plane 42 by means of a metal insert 15 in the ground plane 42. The coaxial cable center conductor 14 is connected to the radiating antenna element 40 by means of a metal insert 15 in the radiating antenna element 40.
  • As shown in FIG. 5 an [0050] amplifier 72 can be inserted between the coaxial cable center conductor 14 and the radiating antenna element 40. A wire 70 connects the amplifier 72 to the metal insert 15 in the radiating antenna element 40. For receiving antennas the input of the amplifier 72 is connected to the radiating antenna element 40 and the output of the amplifier 72 is connected to the center conductor 14 of the coaxial cable 50. For transmitting antennas the output of the amplifier 72 is connected to the radiating antenna element 40 and the input of the amplifier 72 is connected to the center conductor 14 of the coaxial cable 50.
  • FIG. 6 shows an example of a monopole antenna having a radiating [0051] antenna element 64, having a height 71, arranged perpendicular to a ground plane 68. The radiating antenna element 64 and the ground plane 68 are formed of conductive plastic or conductive composite materials. A layer of insulating material 66 separates the radiating antenna element 64 from the ground plane 68. The height 71 of the radiating antenna element 64 is greater than three times the square root of the cross sectional area of the radiating antenna element 64. An example of this antenna with a height 71 of 1.17 inches performed well at GPS frequencies of about 1.5 GHz.
  • FIG. 7 shows an example of the monopole antenna described above with an [0052] amplifier 72 inserted between the center conductor 14 of the coaxial cable 50 and the radiating antenna element 64. For receiving antennas the input of the amplifier 72 is connected to the radiating antenna element 64 and the output of the amplifier 72 is connected to the center conductor 14 of the coaxial cable 50. For transmitting antennas the output of the amplifier 72 is connected to the radiating antenna element 64 and the input of the amplifier 72 is connected to the center conductor 14 of the coaxial cable 5.0.
  • FIGS. 8A, 8B, and [0053] 8C shows an example of an L shaped antenna having a radiating antenna element 80 over a ground plane 98. The radiating antenna element 80 and the ground plane 98 are formed of conductive loaded resin-based materials. A layer of insulating material 96 separates the radiating antenna element 64 from the ground plane 98. The radiating antenna element 80 is made up of a first leg 82 and a second leg 84. FIG. 8A shows a top view of the antenna. FIG. 8B shows a cross section of the first leg 82. FIG. 8C shows a cross section of the second leg 84. FIGS. 8B and 8C show the ground plane 98 and the layer of insulating material 96. The cross sectional area of the first leg 82 and the second leg 84 need not be the same. Antennas of this type may be typically built using overmolding technique to join the conductive resin-based material to the insulating material.
  • Antennas of this type have a number of uses. FIGS. 9A and 9B show a dipole antenna, formed of conductive loaded resin-based materials, embedded in an [0054] automobile bumper 100, formed of insulating material. The dipole antenna has a radiating antenna element 102 and a counterpoise antenna element 104. FIG. 9A shows the top view of the bumper 100 with the embedded antenna. FIG. 9B shows the front view of the bumper 100 with the embedded antenna.
  • The antennas of this invention, formed of conductive loaded resin-based materials, can be used for a number of additional applications. Antennas of this type can be embedded in the molding of a window of a vehicle, such as an automobile or an airplane. FIG. 10A shows a schematic view of such a [0055] window 106. The antenna 110 can be embedded in the molding 108. Antennas of this type can be embedded in the plastic housing, or be part of the plastic shell itself, of portable electronic devices such as cellular phones, personal computers, or the like. FIG. 10B shows a schematic view of a segment 112 of such a plastic housing with the antenna 110 embedded in the housing 112.
  • The conductive loaded resin-based material typically comprises a powder of conductor particles or a fiber of a conductor material in a resin or plastic host. FIG. 11 shows cross section view of an example of conductor loaded resin-based [0056] material 212 having powder of conductor particles 202 in a resin or plastic host 204. In this example the diameter 200 of the of the conductor particles 202 in the powder is between about 3 and 11 microns. FIG. 12 shows a cross section view of an example of conductor loaded resin-based material 212 having conductor fibers 210 in a resin or plastic host 204. In this example the conductor fibers 210 have a diameter of between about 3 and 11 microns and a length of between about 5 and 10 millimeters. The conductors used for these conductor particles 202 or conductor fibers 210 can stainless steel, nickel, copper, silver, or other suitable metals. These conductor particles or fibers are embedded in a resin which in turn is embedded in a plastic host. As previously mentioned, the conductive loaded resin-based materials have a conductivity of between about 5 and 25 ohms per square. To realize this conductivity the ratio of the weight of the conductor material, in this example the conductor particles 202 or conductor fibers 210, to the weight of the resin or plastic host 204 is between about 0.20 and 0.40.
  • Antenna elements formed from conductive loaded resin-based materials can be formed in a number of different ways including injection molding or extrusion. FIG. 13 shows a simplified schematic diagram of an injection mold showing a [0057] lower portion 230 and upper portion 231 of the mold. Uncured conductive loaded resin-based material is injected into the mold cavity 237 through an injection opening 235 and cured. The upper portion 231 and lower portion 230 of the mold are then separated and the cured antenna element is removed.
  • FIG. 14 shows a simplified schematic diagram of an extruder for forming antenna elements using extrusion. Uncured conductive loaded resin-based material is placed in the [0058] cavity 239 of the extrusion unit 234. A piston 236 or other means is then used to force the uncured conductive loaded resin-based material through an extrusion opening 240 which shapes the partially cured conductive loaded resin-based material to the desired shape. The conductive loaded resin-based material is then fully cured and is ready for use.
  • The conductive loaded resin based material can be formed into fibers which are woven or webbed into a conductive fabric. FIG. 15A shows a webbed [0059] conductive fabric 230. FIG. 15B shows a webbed conductive fabric 232. This conductive fabric, 230 and/or 232, can be very thin and cut into desired shapes to form antenna elements. These antenna elements can take the shape of a host and attached as desired.
  • Antennas formed from the conductive loaded resin-based materials can be designed to work at frequencies from about 2 Kilohertz to about 300 Gigahertz. [0060]
  • While the invention has been particularly shown and described with reference to the preferred embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made without departing from the spirit and scope of the invention.[0061]

Claims (23)

What is claimed is:
1. An antenna comprising:
a number of antenna elements formed of a conductive loaded resin-based material, wherein said conductive loaded resin-based material comprises conductor fibers in a resin or plastic host and the ratio of the weight of said conductor fibers to the weight of said resin or plastic host is between about 0.20 and 0.40; and
electrical communication to and among said antenna elements.
2-30. (CANCELLED)
31. A conductive composite, comprising:
a base resin host; and
micron conductor particles in said base resin host wherein the ratio of the weight of said micron conductor particles to the weight of said base resin host is between about 0.20 and 0.40, thereby forming a conductive loaded resin-based material.
32. The conductive composite of claim 31 wherein said micron conductor particles have generally spherical shapes and diameters of between about 3 and 11 microns.
33. The conductive composite of claim 31 wherein said micron conductor particles are stainless steel, nickel, copper, or silver.
34. The conductive composite of claim 31 wherein said base resin host is a polymer resin.
35. The conductive composite of claim 31 wherein said conductive loaded resin-based material has a resistivity of between about 5 and 25 ohms per square.
36. The conductive composite of claim 31 wherein said conductive loaded resin-based material can be used to fabricate antennas.
37. The conductive composite of claim 31 wherein said conductive loaded resin-based material can be used to fabricate ground planes.
38. The conductive composite of claim 31 wherein said conductive loaded resin-based material can be molded or extruded to form desired shapes.
39. The conductive composite of claim 31 wherein said conductive loaded resin-based material can be cut or milled to form desired shapes.
40. The conductive composite of claim 31 wherein said conductive loaded resin-based material can be formed into fibers which can be woven or webbed into a conductive fabric.
41. A conductive composite, comprising:
a base resin host; and
micron conductor fibers in said base resin host wherein the ratio of the weight of said micron conductor fibers to the weight of said base resin host is between about 0.20 and 0.40, thereby forming a conductive loaded resin-based material.
42. The conductive composite of claim 41 wherein said micron conductor fibers have diameters of between about 3 and 11 microns.
43. The conductive composite of claim 41 wherein said micron conductor fibers have lengths of between about 5 and 10 millimeters.
44. The conductive composite of claim 41 wherein said micron conductor fibers are stainless steel, nickel, copper, silver, or nickel plated carbon.
45. The conductive composite of claim 41 wherein said base resin host is a polymer resin.
46. The conductive composite of claim 41 wherein said conductive loaded resin-based material has a resistivity of between about 5 and 25 ohms per square.
47. The conductive composite of claim 41 wherein said conductive loaded resin-based material can be used to fabricate antennas.
48. The conductive composite of claim 41 wherein said conductive loaded resin-based material can be used to fabricate ground planes.
49. The conductive composite of claim 41 wherein said conductive loaded resin-based material can be molded or extruded to form desired shapes.
50. The conductive composite of claim 41 wherein said conductive loaded resin-based material can be cut or milled to form desired shapes.
51. The conductive composite of claim 41 wherein said conductive loaded resin-based material can be formed into fibers which can be woven or webbed into a conductive fabric.
US10/877,092 2001-02-15 2004-06-25 Low cost antennas using conductive plastics or conductive composites Abandoned US20040233112A1 (en)

Priority Applications (65)

Application Number Priority Date Filing Date Title
US10/877,092 US20040233112A1 (en) 2001-02-15 2004-06-25 Low cost antennas using conductive plastics or conductive composites
US11/060,274 US7198735B2 (en) 2001-02-15 2005-02-17 Low cost roofing shingles manufactured from conductive loaded resin-based materials
US11/060,275 US7182889B2 (en) 2001-02-15 2005-02-17 Low cost roofing shingles manufactured from conductive loaded resin-based materials
US11/083,467 US20050208251A1 (en) 2001-02-15 2005-03-18 Low cost electrically conductive tapes and films manufactured from conductive loaded resin-based materials
US11/083,468 US20050178496A1 (en) 2001-02-15 2005-03-18 Low cost electrically conductive tapes and films manufactured from conductive loaded resin-based materials
US11/083,598 US20050160547A1 (en) 2001-02-15 2005-03-18 Low cost conductive brushes manufactured from conductive loaded resin-based materials
US11/083,599 US20050161142A1 (en) 2001-02-15 2005-03-18 Low cost conductive brushes manufactured from conductive loaded resin-based materials
US11/086,852 US20050167931A1 (en) 2001-02-15 2005-03-22 Low cost gaskets manufactured from conductive loaded resin-based materials
US11/086,853 US20050167133A1 (en) 2001-02-15 2005-03-22 Low cost gaskets manufactured from conductive loaded resin-based materials
US11/089,293 US20050200329A1 (en) 2001-02-15 2005-03-24 Low cost charger connections manufactured from conductive loaded resin-based material
US11/089,292 US20050162133A1 (en) 2001-02-15 2005-03-24 Low cost charger connections manufactured from conductive loaded resin-based material
US11/096,176 US20050172950A1 (en) 2001-02-15 2005-03-31 Low cost heated clothing manufactured from conductive loaded resin-based materials
US11/095,871 US20050205551A1 (en) 2001-02-15 2005-03-31 Low cost heated clothing manufactured from conductive loaded resin-based materials
US11/096,821 US20050167188A1 (en) 2001-02-15 2005-04-01 Low cost acoustical structures manufactured from conductive loaded resin-based materials
US11/096,632 US20050167873A1 (en) 2001-02-15 2005-04-01 Low cost fuel cell bipolar plates manufactured from conductive loaded resin-based materials
US11/096,822 US20050167189A1 (en) 2001-02-15 2005-04-01 Low cost acoustical structures manufactured from conductive loaded resin-based materials
US11/096,608 US20050202296A1 (en) 2001-02-15 2005-04-01 Low cost fuel cell bipolar plates manufactured from conductive loaded resin-based materials
PCT/US2005/011943 WO2005118244A2 (en) 2001-02-15 2005-04-08 Fuel cell bipolar plates of conductive loaded resin-based materials
US11/121,680 US20050212161A1 (en) 2001-02-15 2005-05-04 Low cost conductive pipe manufactured from conductive loaded resin-based materials
US11/121,378 US20050202160A1 (en) 2001-02-15 2005-05-04 Low cost electrically conductive carpeting manufactured from conductive loaded resin-based materials
US11/121,376 US20050200041A1 (en) 2001-02-15 2005-05-04 Low cost hardware manufactured from conductive loaded resin-based materials
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US11/143,426 US7829006B2 (en) 2001-02-15 2005-06-02 Method to form vehicle component devices from conductive loaded resin-based materials
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US14/326,542 US20140322532A1 (en) 2001-02-15 2014-07-09 Variable-thickness elecriplast moldable capsule and method of manufacture

Applications Claiming Priority (6)

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US26882201P 2001-02-15 2001-02-15
US26941401P 2001-02-16 2001-02-16
US31780801P 2001-09-07 2001-09-07
US10/075,778 US6741221B2 (en) 2001-02-15 2002-02-14 Low cost antennas using conductive plastics or conductive composites
US10/309,429 US6870516B2 (en) 2001-02-16 2002-12-04 Low cost antennas using conductive plastics or conductive composites
US10/877,092 US20040233112A1 (en) 2001-02-15 2004-06-25 Low cost antennas using conductive plastics or conductive composites

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US10/309,429 Continuation US6870516B2 (en) 2001-02-15 2002-12-04 Low cost antennas using conductive plastics or conductive composites

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Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2884472A1 (en) * 2005-04-14 2006-10-20 Plastic Omnium Cie Plastic reinforcing piece for e.g. bumper bracket of motor vehicle, has rigidifying rib including apex forming plane surface, where apex is coated with electrically conducting material e.g. glue, in continuous manner
US20080100521A1 (en) * 2006-10-30 2008-05-01 Derek Herbert Antenna assemblies with composite bases
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WO2012168536A1 (en) * 2011-06-10 2012-12-13 Amphenol Finland Oy Two shot molding antenna with conductive plastic
US20130241791A1 (en) * 2012-03-16 2013-09-19 Raytheon Company Ridged Waveguide Flared Radiator Array Using Electromagnetic Bandgap Material
US8796580B2 (en) 2009-12-28 2014-08-05 Productive Research Processes for welding composite materials and articles therefrom
US9115264B2 (en) 2010-02-15 2015-08-25 Productive Research Llc Delamination resistant, weldable and formable light weight composites
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US10249953B2 (en) 2015-11-10 2019-04-02 Raytheon Company Directive fixed beam ramp EBG antenna
US11258174B2 (en) 2019-04-30 2022-02-22 Samsung Electronics Co., Ltd. Antenna radiator including plurality of layers and electronic device including the same
US11338552B2 (en) 2019-02-15 2022-05-24 Productive Research Llc Composite materials, vehicle applications and methods thereof

Families Citing this family (48)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7079086B2 (en) * 2001-02-15 2006-07-18 Integral Technologies, Inc. Low cost electromagnetic field absorbing devices manufactured from conductive loaded resin-based materials
US7317420B2 (en) * 2001-02-15 2008-01-08 Integral Technologies, Inc. Low cost omni-directional antenna manufactured from conductive loaded resin-based materials
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US7006050B2 (en) * 2001-02-15 2006-02-28 Integral Technologies, Inc. Low cost antennas manufactured from conductive loaded resin-based materials having a conducting wire center core
US6940468B2 (en) * 2001-02-15 2005-09-06 Integral Technologies, Inc. Transformers or inductors (“transductors”) and antennas manufactured from conductive loaded resin-based materials
US20040227688A1 (en) * 2001-02-15 2004-11-18 Integral Technologies, Inc. Metal plating of conductive loaded resin-based materials for low cost manufacturing of conductive articles
US7316838B2 (en) * 2001-02-15 2008-01-08 Integral Technologies, Inc. Low cost electrically conductive carpeting manufactured from conductive loaded resin-based materials
US20050200329A1 (en) * 2001-02-15 2005-09-15 Integral Technologies, Inc. Low cost charger connections manufactured from conductive loaded resin-based material
US20080063864A1 (en) * 2001-02-15 2008-03-13 Thomas Aisenbrey Variable-thickness elecriplast moldable capsule and method of manufacture
US6870516B2 (en) * 2001-02-16 2005-03-22 Integral Technologies, Inc. Low cost antennas using conductive plastics or conductive composites
US20050162133A1 (en) * 2001-02-15 2005-07-28 Integral Technologies, Inc. Low cost charger connections manufactured from conductive loaded resin-based material
US7017822B2 (en) * 2001-02-15 2006-03-28 Integral Technologies, Inc. Low cost RFID antenna manufactured from conductive loaded resin-based materials
US20110024275A1 (en) * 2001-02-16 2011-02-03 Integral Technologies, Inc. Low cost key actuators and other switching device actuators manufactured from conductive loaded resin-based materials
US7321234B2 (en) * 2003-12-18 2008-01-22 Lecroy Corporation Resistive test probe tips and applications therefor
EP1695100A4 (en) * 2003-12-18 2009-12-30 Lecroy Corp Resistive probe tips
DE102004016157A1 (en) * 2004-04-01 2005-11-03 Kathrein-Werke Kg Antenna according to planar design
JP4789580B2 (en) * 2004-10-19 2011-10-12 株式会社半導体エネルギー研究所 ANTENNA, MANUFACTURING METHOD THEREOF, SEMICONDUCTOR DEVICE HAVING THE ANTENNA, AND ITS MANUFACTURING METHOD
WO2006043685A1 (en) * 2004-10-19 2006-04-27 Semiconductor Energy Laboratory Co., Ltd. Semiconductor device having antenna and method for manufacturing thereof
JP4611039B2 (en) * 2005-01-25 2011-01-12 古野電気株式会社 antenna
WO2006124400A2 (en) * 2005-05-13 2006-11-23 University Of Pittsburgh - Of The Commonwealth System Of Higher Education Method of making an electronic device using an electrically conductive polymer, and associated products
WO2006133380A2 (en) * 2005-06-07 2006-12-14 University Of Pittsburgh - Of The Commonwealth System Of Higher Education Manufacturing of electronic devices using conductive polymer
CN101243552B (en) * 2005-06-09 2010-04-21 莱斯特·E·伯吉斯 Radio frequency identification device and method for manufacturing radio frequency identification device
US8427380B2 (en) 2005-07-29 2013-04-23 Foster-Miller, Inc. Dual function composite system and method of making same
US20070029385A1 (en) * 2005-08-05 2007-02-08 Kovac F G Multi-planar radio frequency identification device
FR2899388B1 (en) 2006-03-28 2008-12-05 Saint Gobain SUBSTRATE PROVIDED WITH AN ELECTRONICALLY ELEMENT WITH ANTENNA FUNCTION
US7862049B2 (en) * 2006-04-17 2011-01-04 Federal Mogul World Wide, Inc. Gasket and method of forming a seal therewith
JP2008236705A (en) * 2006-08-09 2008-10-02 Daido Steel Co Ltd Super-broadband communication antenna
KR100773430B1 (en) * 2006-10-09 2007-11-05 주식회사 월드프라텍 Cellular phone intenna manufacturing method utilizing electric conduction material and cellular phone intenna thereby
CN101542039B (en) * 2006-11-14 2011-12-07 可隆科技特有限公司 Flexible printed conductive fabric and method for fabricating the same
KR100821981B1 (en) * 2007-02-02 2008-04-15 이성철 Dielectrics omnidirection antenna
EP2019425A1 (en) * 2007-07-27 2009-01-28 Semiconductor Energy Laboratory Co., Ltd. Semiconductor device and method for manufacturing the same
US7898481B2 (en) * 2008-01-08 2011-03-01 Motorola Mobility, Inc. Radio frequency system component with configurable anisotropic element
US8680758B2 (en) * 2008-10-20 2014-03-25 Federal-Mogul Ignition Company Spark plug having a plastic upper insulator and method of construction
GB2471882B (en) * 2009-07-16 2011-09-28 Siemens Magnet Technology Ltd Method of manufacturing a solenoidal magnet, and a solenoidal magnet structure
US10396451B2 (en) 2010-11-22 2019-08-27 Ncap Licensing, Llc Techniques for patch antenna
JP6298633B2 (en) 2010-11-22 2018-03-20 エヌキャップ ライセンシング エルエルシーｎＣａｐ Ｌｉｃｅｎｓｉｎｇ，ＬＬＣ Antenna system
US8847840B1 (en) * 2012-02-28 2014-09-30 General Atomics Pseudo-conductor antennas
US8686918B1 (en) * 2012-02-29 2014-04-01 General Atomics Multi-function magnetic pseudo-conductor antennas
US9246208B2 (en) * 2013-08-06 2016-01-26 Hand Held Products, Inc. Electrotextile RFID antenna
DE102015204463A1 (en) * 2015-03-12 2016-09-15 Lufthansa Systems Gmbh & Co. Kg Position-independent data transmission from a large-capacity airliner
CN106733193A (en) * 2015-11-19 2017-05-31 欧亚科技环保工程有限公司 The battery lead plate of precipitator
US11431100B2 (en) 2016-03-25 2022-08-30 Commscope Technologies Llc Antennas having lenses formed of lightweight dielectric materials and related dielectric materials
WO2017165342A1 (en) * 2016-03-25 2017-09-28 Commscope Technologies Llc Antennas having lenses formed of lightweight dielectric materials and related dielectric materials
JP6519526B2 (en) 2016-05-17 2019-05-29 株式会社Ｓｏｋｅｎ Antenna device
US10811764B2 (en) * 2017-03-03 2020-10-20 Logitech Europe S.A. Wireless wearable electronic device communicatively coupled to a remote device
US11527835B2 (en) 2017-09-15 2022-12-13 Commscope Technologies Llc Methods of preparing a composite dielectric material
KR102589937B1 (en) * 2021-04-01 2023-10-17 현대모비스 주식회사 Wave guide for radar

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4610808A (en) * 1982-07-19 1986-09-09 Mitech Corporation Conductive resinous composites
US5771027A (en) * 1994-03-03 1998-06-23 Composite Optics, Inc. Composite antenna
US5951918A (en) * 1995-02-08 1999-09-14 Hitachi Chemical Company, Ltd. Composite electroconductive powder, electroconductive paste, process for producing electroconductive paste, electric circuit and process for producing electric circuit
US6147662A (en) * 1999-09-10 2000-11-14 Moore North America, Inc. Radio frequency identification tags and labels
US6249261B1 (en) * 2000-03-23 2001-06-19 Southwest Research Institute Polymer, composite, direction-finding antenna
US6356234B1 (en) * 1996-06-12 2002-03-12 R T Microwave Limited Electrical circuit
US6870516B2 (en) * 2001-02-16 2005-03-22 Integral Technologies, Inc. Low cost antennas using conductive plastics or conductive composites
US6947005B2 (en) * 2001-02-15 2005-09-20 Integral Technologies, Inc. Low cost antennas and electromagnetic (EMF) absorption in electronic circuit packages or transceivers using conductive loaded resin-based materials
US6947012B2 (en) * 2001-02-15 2005-09-20 Integral Technologies, Inc. Low cost electrical cable connector housings and cable heads manufactured from conductive loaded resin-based materials
US6953619B2 (en) * 2003-02-12 2005-10-11 E. I. Du Pont De Nemours And Company Conductive thermoplastic compositions and antennas thereof

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3587098A (en) * 1968-10-11 1971-06-22 Us Navy Lightweight reflecting material for radar antennas
JPS6173759A (en) * 1984-09-20 1986-04-15 Mitsubishi Rayon Co Ltd Electromagnetic wave shielding, flame-retardant abs resin composition
DE4227208A1 (en) 1992-08-17 1994-02-24 Hirschmann Richard Gmbh Co Antenna combination
JP3232730B2 (en) 1992-12-22 2001-11-26 株式会社デンソー Microstrip antenna
JP2640326B2 (en) * 1993-06-23 1997-08-13 株式会社ボナール Anti-static footwear
EP0632524B1 (en) * 1993-06-30 2001-07-25 Murata Manufacturing Co., Ltd. Method of producing a dielectric lens for an antenna and dielectric lens obtainable by said method
JPH07162220A (en) 1993-12-08 1995-06-23 Furukawa Electric Co Ltd:The Antenna module
ES2124640T3 (en) 1997-02-28 1999-02-01 Top Glass Spa MANUFACTURING PROCEDURE FOR EXTENSIBLE ROD ANTENNAS AND EXTENDED ROD ANTENNA SO PERFORMED.
JPH11200139A (en) * 1998-01-20 1999-07-27 Daikin Ind Ltd Thermally melting fluorine resin fiber
EP1024552A3 (en) 1999-01-26 2003-05-07 Siemens Aktiengesellschaft Antenna for radio communication terminals
US6741221B2 (en) 2001-02-15 2004-05-25 Integral Technologies, Inc. Low cost antennas using conductive plastics or conductive composites

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4610808A (en) * 1982-07-19 1986-09-09 Mitech Corporation Conductive resinous composites
US5771027A (en) * 1994-03-03 1998-06-23 Composite Optics, Inc. Composite antenna
US5951918A (en) * 1995-02-08 1999-09-14 Hitachi Chemical Company, Ltd. Composite electroconductive powder, electroconductive paste, process for producing electroconductive paste, electric circuit and process for producing electric circuit
US6356234B1 (en) * 1996-06-12 2002-03-12 R T Microwave Limited Electrical circuit
US6147662A (en) * 1999-09-10 2000-11-14 Moore North America, Inc. Radio frequency identification tags and labels
US6249261B1 (en) * 2000-03-23 2001-06-19 Southwest Research Institute Polymer, composite, direction-finding antenna
US6947005B2 (en) * 2001-02-15 2005-09-20 Integral Technologies, Inc. Low cost antennas and electromagnetic (EMF) absorption in electronic circuit packages or transceivers using conductive loaded resin-based materials
US6947012B2 (en) * 2001-02-15 2005-09-20 Integral Technologies, Inc. Low cost electrical cable connector housings and cable heads manufactured from conductive loaded resin-based materials
US6870516B2 (en) * 2001-02-16 2005-03-22 Integral Technologies, Inc. Low cost antennas using conductive plastics or conductive composites
US6953619B2 (en) * 2003-02-12 2005-10-11 E. I. Du Pont De Nemours And Company Conductive thermoplastic compositions and antennas thereof

Cited By (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2884472A1 (en) * 2005-04-14 2006-10-20 Plastic Omnium Cie Plastic reinforcing piece for e.g. bumper bracket of motor vehicle, has rigidifying rib including apex forming plane surface, where apex is coated with electrically conducting material e.g. glue, in continuous manner
US20080100521A1 (en) * 2006-10-30 2008-05-01 Derek Herbert Antenna assemblies with composite bases
EP2078323A2 (en) * 2006-10-30 2009-07-15 Laird Technologies, Inc. Antenna assemblies with composite bases
EP2078323A4 (en) * 2006-10-30 2010-03-10 Laird Technologies Inc Antenna assemblies with composite bases
US9889634B2 (en) 2008-08-18 2018-02-13 Productive Research Llc Formable light weight composites
US9434134B2 (en) 2008-08-18 2016-09-06 Productive Research Llc Formable light weight composites
US8796580B2 (en) 2009-12-28 2014-08-05 Productive Research Processes for welding composite materials and articles therefrom
US9239068B2 (en) 2009-12-28 2016-01-19 Productive Research Llc Processes for welding composite materials and articles therefrom
US10457019B2 (en) 2010-02-15 2019-10-29 Productive Research Llc Light weight composite material systems, polymeric materials, and methods
US9115264B2 (en) 2010-02-15 2015-08-25 Productive Research Llc Delamination resistant, weldable and formable light weight composites
US10710338B2 (en) 2010-02-15 2020-07-14 Productive Research Llc Delamination resistant, weldable and formable light weight composites
US11084253B2 (en) 2010-02-15 2021-08-10 Productive Research Llc Light weight composite material systems, polymeric materials, and methods
US11331880B2 (en) 2010-02-15 2022-05-17 Productive Research Llc Delamination resistant, weldable and formable light weight composites
US9415568B2 (en) 2010-02-15 2016-08-16 Productive Research Llc Formable light weight composite material systems and methods
US9981451B2 (en) 2010-02-15 2018-05-29 Productive Research Llc Delamination resistant, weldable and formable light weight composites
US9849651B2 (en) 2010-02-15 2017-12-26 Productive Research Llc Formable light weight composite material systems and methods
FR2971216A1 (en) * 2011-02-03 2012-08-10 Peugeot Citroen Automobiles Sa Rear bumper and antenna assembly for motor vehicle, has shock absorber mounted on body of vehicle, where antenna for hand-free accessing and/or starting system is fixed in reception housing placed in absorber
WO2012168536A1 (en) * 2011-06-10 2012-12-13 Amphenol Finland Oy Two shot molding antenna with conductive plastic
US9912073B2 (en) * 2012-03-16 2018-03-06 Raytheon Company Ridged waveguide flared radiator antenna
US9748665B2 (en) * 2012-03-16 2017-08-29 Raytheon Company Ridged waveguide flared radiator array using electromagnetic bandgap material
US20130241788A1 (en) * 2012-03-16 2013-09-19 Raytheon Company Ridged Waveguide Flared Radiator Antenna
US20130241791A1 (en) * 2012-03-16 2013-09-19 Raytheon Company Ridged Waveguide Flared Radiator Array Using Electromagnetic Bandgap Material
US9233526B2 (en) 2012-08-03 2016-01-12 Productive Research Llc Composites having improved interlayer adhesion and methods thereof
US9323877B2 (en) 2013-11-12 2016-04-26 Raytheon Company Beam-steered wide bandwidth electromagnetic band gap antenna
US10249953B2 (en) 2015-11-10 2019-04-02 Raytheon Company Directive fixed beam ramp EBG antenna
US11338552B2 (en) 2019-02-15 2022-05-24 Productive Research Llc Composite materials, vehicle applications and methods thereof
US11258174B2 (en) 2019-04-30 2022-02-22 Samsung Electronics Co., Ltd. Antenna radiator including plurality of layers and electronic device including the same

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US6870516B2 (en) 2005-03-22
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CN1538554A (en) 2004-10-20
CA2452284A1 (en) 2004-06-04

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