EP0879486A1 - Antennes minces - Google Patents

Antennes minces

Info

Publication number
EP0879486A1
EP0879486A1 EP96943371A EP96943371A EP0879486A1 EP 0879486 A1 EP0879486 A1 EP 0879486A1 EP 96943371 A EP96943371 A EP 96943371A EP 96943371 A EP96943371 A EP 96943371A EP 0879486 A1 EP0879486 A1 EP 0879486A1
Authority
EP
European Patent Office
Prior art keywords
antenna
thin
thin plate
electric conductor
present
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.)
Withdrawn
Application number
EP96943371A
Other languages
German (de)
English (en)
Inventor
Soon Jo Jung
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0879486A1 publication Critical patent/EP0879486A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/27—Adaptation for use in or on movable bodies
    • H01Q1/32—Adaptation for use in or on road or rail vehicles
    • 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
    • H01Q1/362—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith for broadside radiating helical antennas
    • 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
    • H01Q11/00—Electrically-long antennas having dimensions more than twice the shortest operating wavelength and consisting of conductive active radiating elements
    • H01Q11/02—Non-resonant antennas, e.g. travelling-wave antenna
    • H01Q11/08—Helical antennas
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
    • H01Q15/02—Refracting or diffracting devices, e.g. lens, prism
    • H01Q15/10—Refracting or diffracting devices, e.g. lens, prism comprising three-dimensional [3D] array of impedance discontinuities, e.g. holes in conductive surfaces or conductive discs forming artificial dielectric

Definitions

  • the present invention relates to a thin antenna, and more particularly a thin antenna which forms an electric conductor in a helical shape on a thin plate composed of a non-conductive material.
  • a whip antenna has been used as an antenna for personal vehicles.
  • Such a whip antenna has drawbacks that produces a severe noise and causes breakdown due to an effect of the wind during vehicle' s travelling to thereby shorten its lifetime.
  • the antenna is used for a long time, there are caused problems that the degree of its reception is reduced and the antenna gets out of order, due to insertion of different external substances between antenna poles protruded onto the outside of the vehicle.
  • a glass antenna formed with hot wires at the rear window of the vehicle is being used.
  • the glass antenna has problems such as reduction of a directional receiving characteristic according to a travelling direction of the vehicle as well as complexity in design based on the exterior of the vehicle, which cause greater expenses.
  • Another object of the present invention is to provide a compact lightweight thin antenna to achieve the lightness of vehicles.
  • Another object of the present invention is to provide an antenna which no noise is generated during operating like a power antenna.
  • Still other object of the present invention is to provide an antenna with no loss of battery due to dark current, and easy maintenance and repairs when the antenna is not operated
  • a thin antenna comprising: a thin plate composed of an insulating material, having a predetermined length and width; and an electric conductor of a helical shape formed in the longitudinal direction through the front and rear of the thin plate.
  • Thin plate comprises a plurality of holes formed at both edges of the thin plate in the longitudinal direction, which are coated with a conductive material, in which the plurality of the holes are positioned opposite to each other in an approximately slash on both sides of the thin plate, and are connected with the electric conductor so that one single conductive path is made in the longitudinal direction from one end to the other end of the thin plate.
  • FIG. 1 is a perspective view showing a thin antenna according to a preferred embodiment of the present invention
  • FIG. 2 is a sectional view taken along a line I-I of FIG. 1 ;
  • FIG. 3 is an enlarged perspective view showing the front portion of part "A" of FIG. 1;
  • FIG. 4 is an enlarged perspective view showing the rear portion of part "A" of FIG. 1;
  • FIG. 5 is a perspective view showing a thin antenna according to another embodiment of the present invention.
  • FIG. 6 is a graph comparing signal gains in a broadcasting frequency.
  • FIG. 1 is a perspective view showing a thin antenna according to a preferred embodiment of the present invention
  • FIG. 2 is a sectional view taken along a line I ⁇ I of FIG. 1
  • FIG. 3 is an enlarged perspective view showing the front portion of part "A" of FIG. 1
  • FIG. 4 is an enlarged perspective view showing the rear portion of part "A” of FIG. 1.
  • the thin antenna of the present invention comprises a thin plate 10 having a predetermined length and width, which is composed of an insulating material.
  • the thin plate 10 includes an electric conductor 20 of a helical shape formed into the longitudinal direction at the front and rear thereof.
  • the thin plate 10 includes a plurality of holes 12 on both of edges along the longitudinal direction of the thin plate 10, which are coated with a conductive material.
  • Each of the holes 12 positioned opposite to each other in an approximately slash at the front and rear of the thin plate 10 is connected with the electric conductor 20.
  • the conductor 20 connects the holes 12 so that one single conductive path is made in the longitudinal direction from one end to the other end of the thin plate 10.
  • the conductor 20 forming one conductive path is alternately connected to the front and rear of the thin plate 10 through the holes 12 which are coated with a conductive material, the conductor 20 becomes a helical shape.
  • a film is prepared, of which double faces covered with epoxy or synthetic resins are coated with a conductive material such as aluminum or copper, and then the coated double -faced film is corroded so as to form a coil- shaped pattern. Next, edges of the pattern are drilled and coated with the conductive material, to thereby obtain both faces in a helical form by combination of the conductive patterns.
  • a plurality of holes are formed on a synthetic resin coated with no conductors in a predetermined interval, and the both sides thereof is printed using conductive ink such as silver to generates an antenna pattern.
  • the width of the thin plate 10 is the width of the thin plate 10 .
  • Reference numeral 30 indicates a connection line for connecting the conductive path of the antenna to a mounting member.
  • FIG. 5 is a perspective view showing a thin antenna according to
  • FIG. 15 another embodiment of the present invention.
  • This embodiment has the same construction as that of FIG. 1, but has an arrangement that the electric conductor 20 is extended to one end of the antenna, in place of the connection line 30 of FIG. 1. Further, am amplifier 40 for amplifying a signal is integrally incorporated at the extended end
  • FIG. 6 is a graph comparing signal gains in frequency band of a broadcasting signal.
  • A indicates a receiving signal gain with regard to the antenna of the present invention
  • B shows a gain with regard to the conventional whip antenna.
  • the gain of the antenna according to the present invention is further improved.
  • the thin antenna in accordance with the present invention provides various advantages that improves a signal gain, achieve a compact lightweight antenna, and gives convenience in on use as well as easiness m maintenance and repairs.
  • a thin antenna of the present invention is used for personal vehicles.

Landscapes

  • Details Of Aerials (AREA)

Abstract

La présente invention concerne une antenne mince dans laquelle un conducteur électrique (20) de forme hélicoïdale est formé sur une plaque mince (10). L'antenne mince présente une construction dans laquelle la plaque mince (10) composée d'un matériau isolant présente une longueur et une largeur prédéterminées, sur lequel le conducteur électrique (20) de forme hélicoïdale est formé dans le sens longitudinal, sur l'avant et l'arrière de la plaque mince (10). Par conséquent, l'antenne de la présente invention est pratique à utiliser et présente un meilleur effet de gain de réception.
EP96943371A 1996-11-29 1996-12-30 Antennes minces Withdrawn EP0879486A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
KR9659953 1996-11-29
KR1019960059953A KR19980040727A (ko) 1996-11-29 1996-11-29 박형안테나
PCT/KR1996/000266 WO1998024143A1 (fr) 1996-11-29 1996-12-30 Antennes minces

Publications (1)

Publication Number Publication Date
EP0879486A1 true EP0879486A1 (fr) 1998-11-25

Family

ID=19484753

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96943371A Withdrawn EP0879486A1 (fr) 1996-11-29 1996-12-30 Antennes minces

Country Status (4)

Country Link
EP (1) EP0879486A1 (fr)
KR (1) KR19980040727A (fr)
TW (1) TW328184B (fr)
WO (1) WO1998024143A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20040006156A (ko) * 2002-07-11 2004-01-24 (주)테나텍 휴대용 무선통신단말기의 동박회로 안테나 및 형성방법
FR2866479A1 (fr) * 2004-02-12 2005-08-19 Thomson Licensing Sa Procede de fabrication d'une antenne et/ou d'un reseau d'antennes, antenne et/ou reseau d'antennes fabriques selon un tel procede

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4203118A (en) * 1978-04-10 1980-05-13 Andrew Alford Antenna for cross polarized waves
JPH0231578A (ja) * 1988-07-21 1990-02-01 Seiko Epson Corp 小型テレビジョン受信装置のアンテナ装置
US5083136A (en) * 1989-11-16 1992-01-21 Wells Donald H Transmission line coupling device with closed impedance matching loop
JP3055703B2 (ja) * 1990-02-20 2000-06-26 日本電信電話株式会社 腕時計形受信機
JPH03247021A (ja) * 1990-02-26 1991-11-05 Nippon Telegr & Teleph Corp <Ntt> 携帯無線機
JPH06508732A (ja) * 1991-06-27 1994-09-29 シーメンス アクチエンゲゼルシヤフト 平面状蛇行アンテナ

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9824143A1 *

Also Published As

Publication number Publication date
KR19980040727A (ko) 1998-08-17
TW328184B (en) 1998-03-11
WO1998024143A1 (fr) 1998-06-04

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Legal Events

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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Effective date: 19980826

AK Designated contracting states

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Designated state(s): DE

STAA Information on the status of an ep patent application or granted ep patent

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18D Application deemed to be withdrawn

Effective date: 20000701