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WO1997017792A1 - Dispositif de couplage d'emission pour antenne - Google Patents

Dispositif de couplage d'emission pour antenne Download PDF

Info

Publication number
WO1997017792A1
WO1997017792A1 PCT/US1995/014390 US9514390W WO9717792A1 WO 1997017792 A1 WO1997017792 A1 WO 1997017792A1 US 9514390 W US9514390 W US 9514390W WO 9717792 A1 WO9717792 A1 WO 9717792A1
Authority
WO
WIPO (PCT)
Prior art keywords
signal transmission
transmission line
antenna
communication device
coupling
Prior art date
Application number
PCT/US1995/014390
Other languages
English (en)
Inventor
Robert J. Crowley
Donald N. Halgren
Original Assignee
Crowley Robert J
Halgren Donald N
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority to US08/042,879 priority Critical patent/US5493702A/en
Priority claimed from US08/042,879 external-priority patent/US5493702A/en
Application filed by Crowley Robert J, Halgren Donald N filed Critical Crowley Robert J
Priority to PCT/US1995/014390 priority patent/WO1997017792A1/fr
Publication of WO1997017792A1 publication Critical patent/WO1997017792A1/fr

Links

Classifications

    • 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
    • H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
    • H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
    • H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
    • 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
    • H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
    • H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
    • H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
    • H01Q1/242—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use
    • H01Q1/243—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use with built-in antennas
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/3827—Portable transceivers
    • H04B1/3877—Arrangements for enabling portable transceivers to be used in a fixed position, e.g. cradles or boosters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/3827—Portable transceivers
    • H04B1/3833—Hand-held transceivers

Definitions

  • This invention relates to a docking system for handheld electronic devices such as cellular telephones or the like, for structures or vehicles.
  • Extraneous radio frequency emission has become a serious concern of hand-held electronic communication devices such as portable facsimile machines, ground position indicators, and cellular telephone manufacturers and users alike.
  • RF radiation is considered a potential carcinogen.
  • Hand held devices should be usable in automobiles, planes, cabs or buildings without causing concern of the radiation therefrom
  • the hand-held devices should be portable for a user to carry in his pocket, yet be able to use that same cellular unit in such vehicle or building while minimizing such radiational effect therein.
  • the present invention comprises a docking system adaptable to an automobile, plane or building for receipt of and cradling of a hand-held electronic device such as a cellular telephone, to permit a mating of the antenna of the cellular telephone, with an emissive free receiver, to direct the signal through a coax cable and a further outside antenna.
  • a hand-held electronic device such as a cellular telephone
  • the docking system includes a housing which also captures the hand-held cellular telephone.
  • the housing may include a contact arrangement to charge the hand-held cellular telephone batteries during its cradling within the vehicle or building.
  • the housing comprises a metal case, such as aluminum or a conductive plastic which matively receives the antenna and the telephone unit itself.
  • the housing comprises a separate compartment for the antenna and for the telephone.
  • the antenna compartment may be brass lined on its inner surface with a silver plating thereon.
  • a broadband coupling probe is arranged adjacent the antenna within the antenna compartment.
  • a ferrite attenuator may be arranged between the antenna compartment and telephone compartment of the housing.
  • a metallic backplate may be arranged to capacitively couple the telephone chassis to an RF ground.
  • a coupling probe may be attached, through a proper coaxial cable, to an external antenna, in the vehicle or building, as the case may be.
  • the invention thus includes an arrangement for permitting the safe, shielded use of a hand-held electronic device such as a cellular telephone in a structure comprising: a conductive housing having an antenna compartment; a partition separating the antenna compartment from the telephone; an antenna adapter arranged to transfer signals with respect to an antenna of the cellular telephone and an external antenna therewith.
  • the invention also includes the antenna compartment with an RF lining shield arranged therein.
  • the RF lining may comprise a silver- plated brass shield.
  • the separator partition may comprise a ferrite attenuator.
  • the invention may include a means for charging the cellular telephone while it is disposed within the housing.
  • the housing may be connected to a remote loudspeaker and microphone, to permit a cellular hand-held telephone to be operated "hand-free" therewith.
  • the structure may be an automobile, a building, an airplane, or an elevator.
  • the invention includes a method for permitting the safe, shielded use of a hand-held cellular telephone in a structure, comprising the steps of: providing a conductive housing for enclosure of an antenna and a cellular telephone therewith; empowering the housing with a support circuit to permit use of such a cellular telephone therewith; shielding the antenna within the conductive housing so as to contain RF signals therewithin; transmitting signals between an external antenna and an antenna enclosed within the conductive housing; resonating said conductive housing near the operating frequency of the telephone; coupling transmitted and received RF energy through the antenna to an external transmission line and antenna external of the structure.
  • the invention includes a method for permitting the safe, shielded use of a hand held electronic device such as a cellular telephone having a short antenna thereon, in a structure, comprising the steps of: providing a conductive housing arranged to radiationally enclose the short external antenna of a hand held cellular telephone; connecting the conductive housing through an RF transmission line and connector, to an antenna external of the structure; resonating the conductive housing near the operating frequency of the hand held cellular telephone; coupling transmitted and received RF energy from the short antenna through the antenna external of the structure.
  • the invention thus comprises a docking system for connecting a portable communication device to a further signal transmission line, the portable communication device having an external radiative antenna, the system comprising a shielded housing for receivably enclosing at least a portion of the external radiative antenna of the portable communication device; and a coupling probe mounted within the shielded housing for radiatively coupling between the external antenna of the portable communication device and the further signal transmission line via radio frequency energy therebetween.
  • the shielded housing is comprised of an electrically conductive material.
  • a radio frequency absorbent material is arranged within the shielded housing.
  • the radio frequency absorbent material is ferrite.
  • the signal transmission line comprises a further antenna located at a location remote from the shielded housing.
  • the shielded housing is articulable with respect to the further antenna.
  • the signal transmission line comprises a coaxial electrical cable.
  • the portable communication device is a cellular telephone.
  • the shielded housing is articulably attached to a support structure, to permit adjustability with respect thereto.
  • the invention also comprises a method of coupling a portable communication device having an external radiative antenna, to a signal transmission line for the purpose of effecting radio signal transmission therebetween, the method comprising the steps of arranging a shielded housing in attachment with the signal transmission line, mounting a coupling probe within the shielded housing and in communication with the signal transmission line, and inserting the external antenna of the portable communication device into the shielded housing so as to permit radiative communication between the radiative antenna and the signal transmission line via the coupling probe.
  • the method includes the steps of attaching a further antenna to the signal transmission line at a location remote from the shielded housing, energizing said portable communication device so as to effectuate radiative transmission between the external radiative antenna of the portable communication device, and the coupling probe attached to the signal transmission line, arranging the signal transmission line in a structure; and articulating the shielded housing with respect to the structure to facilitate mating of the external antenna with respect to the shielded housing.
  • the invention also includes a system for coupling a cellular telephone having an external radiative antenna, to a separate signal transmission line, the system comprising a shielded housing arranged to confiningly contain radio frequency energy, and a coupling probe mounted within the housing, which probe is also in electrical communication with the signal transmission line, the coupling probe arranged to radiatively transfer radio frequency energy between an external radiative antenna of a cellular telephone placed a spaced distance thereadjacent, and the signal transmission line, to effectuate coupling thereof when the cellular telephone is energized.
  • the signal transmission line also comprises a further radiative antenna disposed remotely with respect to the shielded housing.
  • Figure 1 is a plan view of a telephone docking housing arrangement, with portions omitted for clarity;
  • Figure 2 is a view taken along the lines A-A of figure 1 ; and Figure 3 is a block diagram of a docking system for a handheld cellular telephone.
  • a portable communication device docking arrangement 10 to permit a portable communication device such as a hand-held cellular telephone 12 to be utilized anywhere, such as within a vehicle or structure or adjacent thereto, and as a personal communicator (telephone) carried on an individual.
  • the docking arrangement 10 comprises a housing 16, fabricated typically from a metal, such as aluminum, or from a conductively coated plastic, such as a polycarbonate.
  • the docking arrangement includes the housing 16 which may be divided into an antenna receiving compartment 18, and a cellular telephone receiving compartment 20.
  • the antenna receiving compartment 18, is more fully resonant at the frequency range of about 860 MHz, and fully encloses an antenna 22 received therein, to provide RF shielding therefrom.
  • the antenna compartment 18 may have silver plated brass 24 lining the inner walls thereof, as shown in figure 1.
  • the antenna compartment 18, preferably has interior dimensions of about 4.5 cm by about 1.9 cm by about 12.38 cm, or other dimensions which provides a rough equivalent volume in the antenna compartment 18, as the aforementioned dimensions.
  • An antenna piercable wall structure for segregating the antenna compartment 18 from the user may preferably be comprised of a ferrite attenuator 26, or partition, which acts as a choke between the antenna compartment 18 and the user and telephone compartment 20, to prevent the emission from the antenna compartment 18, of stray RF energy, or at least lower it to an acceptable level.
  • An opening 28 is disposed within the ferrite attenuator 26, to permit an antenna 22 to be disposed within the compartment 18.
  • a broadband coupling probe 30 is arranged within the antenna compartment 18, and is connected, through appropriate coax cable 53 to an external antenna 54, (vehicle structure) as also shown in figure 3, in block diagram form.
  • the coupling probe is tuned to a central resonant frequency of about 860 MHz,, with a nominal 50 ohm load at the terminal.
  • the probe 30 may also be comprised of an ungrounded capacitive coupling probe or plate, which serves the same function as the inductive probe.
  • Other couplings 30 may include radiation couplings and galvanic couplings which are arrangeable in close proximity to the antenna 22, for transmission to and from the external antenna 54.
  • the telephone 12 is arranged to be snugly received within the telephone compartment 20, as shown in figures 1 and 2.
  • the compartment 20, may have a capacitive ground backing plate 34, made of aluminum, in conductive communication with the housing 16.
  • the housing 16, is of course attached to an RF ground connector 36, such RF ground being carried to the ground side of the connector.
  • the telephone compartment 20 may have a biased charger pin arrangement 38, which is in connective communication with the electrical system of the structure (vehicle, building or airplane), to permit the hand-held cellular telephone 12 to be charged while it is emplaced within the docking arrangement 10.
  • FIG. 3 The block diagram of the docking arrangement 10, is shown in figure 3, wherein a hand held cellular telephone unit 50 is placed in antenna mating relationship with a coupling probe of a cellular phone dock 52.
  • the dock 52 is attached for example, to an external (automobile) antenna 54.
  • the dock 52 could be disposed in the wall of a building, or in an elevator, an airplane, or just about anywhere an external antenna may be arranged to pickup RF signals and keep them from close proximity to a person who is using the hand held cellular unit.
  • the dock may be actually built into a wall 68 of the entity using the dock 52, or it may be on an articulable arm 70, so as to bring the dock 52 within adjustable reach of people.
  • the dock 52 in any case, may be attached to an audio output amplifier 56 which feeds a signal to a loudspeaker 58, when it is set up in a vehicle.
  • a remote mounted microphone 60 is connected to a microphone null amplifier 57 and the output amplifier 56, to permit hands-free operation of a telephone 50 while using this docking arrangement 10 in an automobile (or other aforementioned facility) without acoustic feedback.
  • the telephone unit 50 is charged through a 12.8 volt regulator 59, which picks up power through the electrical system of the structure (automobile, building or airplane), to which the docking arrangement 10 is attached.
  • the unit permits efficient, inexpensive and convenient means for holding and operating a handheld cellular telephone within a vehicle, airplane or building, while effectively shielding the occupants from potentially harmful RF energy.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Telephone Set Structure (AREA)

Abstract

La présente invention comprend un système d'accouplement (10) servant à brancher un appareil portable de communications (12) à une autre ligne (53) de transmission des signaux. Cet appareil (12) possède une antenne rayonnante extérieure (22), le système (10) comprend un boîtier blindé (16) destiné à contenir, de manière à recevoir, au moins une partie de l'antenne rayonnante extérieure (22) de l'appareil portable de communications (12) et une sonde de couplage (30) montée à l'intérieur du boîtier blindé (16) et servant à coupler par rayonnement l'antenne extérieure (22) et l'autre ligne (53) de transmission de signaux au moyen d'énergie HF passant de l'une à l'autre.
PCT/US1995/014390 1993-04-05 1995-11-07 Dispositif de couplage d'emission pour antenne WO1997017792A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US08/042,879 US5493702A (en) 1993-04-05 1993-04-05 Antenna transmission coupling arrangement
PCT/US1995/014390 WO1997017792A1 (fr) 1993-04-05 1995-11-07 Dispositif de couplage d'emission pour antenne

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/042,879 US5493702A (en) 1993-04-05 1993-04-05 Antenna transmission coupling arrangement
PCT/US1995/014390 WO1997017792A1 (fr) 1993-04-05 1995-11-07 Dispositif de couplage d'emission pour antenne

Publications (1)

Publication Number Publication Date
WO1997017792A1 true WO1997017792A1 (fr) 1997-05-15

Family

ID=26719725

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1995/014390 WO1997017792A1 (fr) 1993-04-05 1995-11-07 Dispositif de couplage d'emission pour antenne

Country Status (1)

Country Link
WO (1) WO1997017792A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2324657A (en) * 1997-04-26 1998-10-28 Rohde & Schwarz Aerial coupler for mobile telephones
US7054671B2 (en) 2000-09-27 2006-05-30 Nokia Mobile Phones, Ltd. Antenna arrangement in a mobile station
US7881664B2 (en) 1993-04-05 2011-02-01 Ambit Corp Personal wireless communication device connectivity arrangement within an RF restricted environment
US8238984B2 (en) 2006-04-12 2012-08-07 Funkwerk Dabendorf Gmbh Device for coupling and housing a mobile telephone in a motor vehicle

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5336896A (en) * 1993-02-04 1994-08-09 Katz Joseph M Cellular telephone users protective device
US5338896A (en) * 1993-09-03 1994-08-16 Danforth David M Shield device for cellular phones
US5367309A (en) * 1993-07-09 1994-11-22 Richard Tashjian Cellular phone shield
US5444866A (en) * 1993-02-24 1995-08-22 Cykiert; Robert C. Device for shielding a cellular telephone user from electromagnetic waves

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5336896A (en) * 1993-02-04 1994-08-09 Katz Joseph M Cellular telephone users protective device
US5444866A (en) * 1993-02-24 1995-08-22 Cykiert; Robert C. Device for shielding a cellular telephone user from electromagnetic waves
US5367309A (en) * 1993-07-09 1994-11-22 Richard Tashjian Cellular phone shield
US5338896A (en) * 1993-09-03 1994-08-16 Danforth David M Shield device for cellular phones

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7881664B2 (en) 1993-04-05 2011-02-01 Ambit Corp Personal wireless communication device connectivity arrangement within an RF restricted environment
GB2324657A (en) * 1997-04-26 1998-10-28 Rohde & Schwarz Aerial coupler for mobile telephones
GB2324657B (en) * 1997-04-26 2002-01-23 Rohde & Schwarz Aerial coupler for mobile telephones
US7054671B2 (en) 2000-09-27 2006-05-30 Nokia Mobile Phones, Ltd. Antenna arrangement in a mobile station
US8238984B2 (en) 2006-04-12 2012-08-07 Funkwerk Dabendorf Gmbh Device for coupling and housing a mobile telephone in a motor vehicle

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