WO2000035047A1 - Antenne perfectionnee - Google Patents

Antenne perfectionnee Download PDF

Info

Publication number
WO2000035047A1
WO2000035047A1 PCT/GB1999/004098 GB9904098W WO0035047A1 WO 2000035047 A1 WO2000035047 A1 WO 2000035047A1 GB 9904098 W GB9904098 W GB 9904098W WO 0035047 A1 WO0035047 A1 WO 0035047A1
Authority
WO
WIPO (PCT)
Prior art keywords
antenna
radio frequency
tube
power pack
frequency antenna
Prior art date
Application number
PCT/GB1999/004098
Other languages
English (en)
Inventor
Glyn Martin Adgie
David Baylis
Original Assignee
Electronic Product Design Limited
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
Application filed by Electronic Product Design Limited filed Critical Electronic Product Design Limited
Priority to AU21145/00A priority Critical patent/AU2114500A/en
Publication of WO2000035047A1 publication Critical patent/WO2000035047A1/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
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/44—Details of, or arrangements associated with, antennas using equipment having another main function to serve additionally as an antenna, e.g. means for giving an antenna an aesthetic aspect

Definitions

  • This invention relates to an improved radio frequency antenna
  • a radio frequency antenna is employed by a transmitter and/or a receiver powered by a battery power pack to produce and/or receive radio waves
  • This arrangement when installed or used outdoors requires the antenna connection and the battery power pack and connections to be made waterproof The task of making connections waterproof is expensive
  • An object of the present invention is to provide an arrangement which reduces the connections required to be made watertight
  • the present invention is an improved radio frequency antenna comprising an antenna in circuit with a transmitter and/or a receiver and powered by a battery power pack in which the antenna is formed of a hollow metallic tube closed at one end and housing the battery power pack
  • an annular connector is co-axially provided at the mouth of the tube
  • the power pack desirably comprises a series of batteries arranged end-to-end in the tube with the negative terminal electrically connected to the tube and the positive terminal electrically connected to one terminal of the connector, a second terminal of the connector being electrically connected to the tube
  • Fig 1 shows a cross-sectional view of an improved antenna
  • Fig 2 shows a circuit diagram with the antenna of Fig 1 ,
  • Fig 3 shows the circuit diagram with a modified antenna
  • Fig. 4 shows the circuit diagram with a dipole antenna
  • Fig. 5 shows the circuit diagram with a counterpoise arrangement instead of an earth connection.
  • an improved radio frequency antenna comprises an antenna 10 in circuit with a transmitter 12 and/or a receiver and powered by a battery power pack 14.
  • the antenna 10 is formed of a hollow metallic tube 16 closed at one end 18 and housing the battery power pack 14.
  • An annular connector 20 is co-axially provided at the mouth of the tube 16.
  • the power pack 14 comprises a series of 'pen torch' battery cells 22 arranged end-to-end in the tube 16 with the negative terminal electrically connected to the tube 16 and the positive terminal electrically connected to one terminal of the connector 20.
  • a second terminal of the connector 20 is electrically connected to the tube 16.
  • the circuit diagram used is as shown in the drawings. Basically, the existing diagram used for conventional antennas is used and comprises a transmitter 24 and/or a receiver connected for radio frequency current to flow to the antenna 10 through a tuning and matching network 26 having two outputs, one connected to the antenna 10.
  • the network 26 includes two variable capacitors 28, 30 which are adjustable to tune and match to different lengths of antenna 10. Direct current flows from the transmitter 24 through the other output of the network to earth.
  • the positive terminal of the conductor 20 is connected to the transmitter 24 through an inductor 32 to allow direct current 33 to flow from the positive terminal of the battery power pack 14 to the transmitter 24.
  • the negative terminal of the conductor 20 is connected to one output of the network 26 with a connection being made between both outputs through an inductor 36.
  • the inductors 32, 36 are arranged to have a high impedance at the transmitting/receiving frequency, such that a radio frequency current 35 is injected into the tube 16 of the antenna 10
  • a radio frequency output 37 of the transmitter 24 is connected to the second terminal of the connector 20 and therefore to the tube 16
  • the antenna 10 is extended by a wire or rod 38
  • This arrangement can be used when the tube is too short on its own to work efficiently as an antenna which would be the case when a longer wavelength is being transmitted
  • the length of the wire or rod can be designed such that the total length of the antenna 10 is a quarter wavelength or other resonant length
  • circuit diagram can be as shown in Fig 5 where the earth connection instead of being earthed is connected to a counterpoise 41

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Details Of Aerials (AREA)
  • Support Of Aerials (AREA)

Abstract

L'invention concerne une antenne radiofréquence perfectionnée, comprenant une antenne (10) montée en circuit avec un émetteur (12) et/ou un récepteur, et alimentée par bloc d'alimentation (14) de batterie. Cette antenne (10) est formée d'un tube métallique (16) creux fermé à une extrémité (18), et renfermant le bloc d'alimentation (14) de batterie. Un connecteur annulaire (20) est placé coaxial à l'ouverture du tube (16).
PCT/GB1999/004098 1998-12-10 1999-12-10 Antenne perfectionnee WO2000035047A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU21145/00A AU2114500A (en) 1998-12-10 1999-12-10 Improved antenna

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB9827212.3A GB9827212D0 (en) 1998-12-10 1998-12-10 Improved antenna
GB9827212.3 1998-12-10

Publications (1)

Publication Number Publication Date
WO2000035047A1 true WO2000035047A1 (fr) 2000-06-15

Family

ID=10843994

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1999/004098 WO2000035047A1 (fr) 1998-12-10 1999-12-10 Antenne perfectionnee

Country Status (3)

Country Link
AU (1) AU2114500A (fr)
GB (1) GB9827212D0 (fr)
WO (1) WO2000035047A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56126301A (en) * 1980-03-10 1981-10-03 Yaesu Musen Co Ltd Device for battery stored antenna
JPS61123303A (ja) * 1984-11-20 1986-06-11 Matsushita Electric Ind Co Ltd 小形無線機のアンテナ
US4623895A (en) * 1983-04-29 1986-11-18 Her Majesty The Queen In Right Of Canada, As Represented By The Minister Of National Defence Of Her Majesty's Canadian Government Flexible broadband UHF antenna
EP0297790A2 (fr) * 1987-06-29 1989-01-04 Nec Corporation Antenne d'un récepteur-radio de poche
JPH07321688A (ja) * 1994-05-25 1995-12-08 Funai Denki Kenkyusho:Kk 無線装置の内蔵アンテナ

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56126301A (en) * 1980-03-10 1981-10-03 Yaesu Musen Co Ltd Device for battery stored antenna
US4623895A (en) * 1983-04-29 1986-11-18 Her Majesty The Queen In Right Of Canada, As Represented By The Minister Of National Defence Of Her Majesty's Canadian Government Flexible broadband UHF antenna
JPS61123303A (ja) * 1984-11-20 1986-06-11 Matsushita Electric Ind Co Ltd 小形無線機のアンテナ
EP0297790A2 (fr) * 1987-06-29 1989-01-04 Nec Corporation Antenne d'un récepteur-radio de poche
JPH07321688A (ja) * 1994-05-25 1995-12-08 Funai Denki Kenkyusho:Kk 無線装置の内蔵アンテナ

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 006, no. 006 (E - 089) 14 January 1982 (1982-01-14) *
PATENT ABSTRACTS OF JAPAN vol. 010, no. 313 (E - 448) 24 October 1986 (1986-10-24) *
PATENT ABSTRACTS OF JAPAN vol. 1996, no. 04 30 April 1996 (1996-04-30) *

Also Published As

Publication number Publication date
AU2114500A (en) 2000-06-26
GB9827212D0 (en) 1999-02-03

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