WO1998024143A1 - Thin antennas - Google Patents

Thin antennas Download PDF

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Publication number
WO1998024143A1
WO1998024143A1 PCT/KR1996/000266 KR9600266W WO9824143A1 WO 1998024143 A1 WO1998024143 A1 WO 1998024143A1 KR 9600266 W KR9600266 W KR 9600266W WO 9824143 A1 WO9824143 A1 WO 9824143A1
Authority
WO
WIPO (PCT)
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.)
Ceased
Application number
PCT/KR1996/000266
Other languages
French (fr)
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
Priority to EP96943371A priority Critical patent/EP0879486A1/en
Publication of WO1998024143A1 publication Critical patent/WO1998024143A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • 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

The present invention relates to a thin antenna in which an eletric conductor (20) of a helical shape is formed at a thin plate (10). The thin antenna has a construction that the thin plate (10) composed of an insulating material has a predetermined length and width, on which the electric conductor (20) of a helical shape is formed in the longitudinal direction through the front and rear of the thin plate (10). Accordingly, the antenna of the present invention provides convenience in use and an improved effect of a receiving gain.

Description

THIN ANTENNAS
TECHNICAL FIELD
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.
BACKGROUND ART
Generally, 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. Furthermore, when 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. Recently, a glass antenna formed with hot wires at the rear window of the vehicle is being used. However, 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.
DISCLOSURE OF INVENTION
To solve the above problems, it is an object of the present invention to provide a thin antenna.
Another object of the present invention is to provide a compact lightweight thin antenna to achieve the lightness of vehicles.
Other 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
To accomplish the above object of the present invention, there is provided a thin antenna, the 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.
BRIEF DESCRIPTION OF THE DRAWINGS
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; and FIG. 6 is a graph comparing signal gains in a broadcasting frequency.
BEST MODE FOR CARRYING OUT THE INVENTION
A preferred embodiment of the present invention will be described below with reference to the accompanying drawings.
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, and FIG. 4 is an enlarged perspective view showing the rear portion of part "A" of FIG. 1. As shown, 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. At this time, 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. Thus, since 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.
In order to produce the thin antenna of the present invention, 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. As another manufacturing method, 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.
It is preferable that the width of the thin plate 10 is
10 approximately 3 ~ 20mm , and the length thereof is 10 ~ 300mm for the antenna. It is also preferable that an interval W between the holes
12 is 1 ~ lOmm . 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
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
20 of the electric conductor 20.
FIG. 6 is a graph comparing signal gains in frequency band of a broadcasting signal. In FIG. 6, A indicates a receiving signal gain with regard to the antenna of the present invention, and B shows a gain with regard to the conventional whip antenna. As we can see
25 from FIG. 6, the gain of the antenna according to the present invention is further improved.
As described above, 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. INDUSTRIAL APPLICABILITY
A thin antenna of the present invention is used for personal vehicles.

Claims

WHAT IS CLAIMED IS :
1. A thin antenna, comprising: a thin plate (10), composed of an insulating material, having a predetermined length and width; and an electric conductor (20) of a helical shape formed in the longitudinal direction through the front and rear of said thin plate (10).
2. The thin antenna as claimed in claim 1, wherein said thin plate (10) comprises a plurality of holes (12) formed at both edges of said thin plate (10) in the longitudinal direction, which are coated with a conductive material, wherein the plurality of said holes (12) are positioned opposite to each other in an approximately slash on both sides of said thin plate 10, and are connected with said electric conductor (20) so that one single conductive path is made in the longitudinal direction from one end to the other end of said thin plate (10).
3. The thin antenna as claimed in claim 1, wherein the width of said thin plate (10) is approximately 3 ~ 20mm , and the length thereof is 10 - 300mm .
4. The thin antenna as claimed in claim 1, wherein the interval between said holes (12) is l ~ 10mm .
5. The thin antenna as claimed in claim 1 or 2, wherein said electric conductor (20) is wired in the opposite direction at the middle point for impedance matching.
6. The thin antenna as claimed in claim 1 or 2, wherein an electric conductor is extended to one end of said antenna.
7. The thin antenna as claimed in claim 6, further comprising an amplifier which is integrally incorporated with said electric conductor.
PCT/KR1996/000266 1996-11-29 1996-12-30 Thin antennas Ceased WO1998024143A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP96943371A EP0879486A1 (en) 1996-11-29 1996-12-30 Thin antennas

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1996/59953 1996-11-29
KR1019960059953A KR19980040727A (en) 1996-11-29 1996-11-29 Thin antenna

Publications (1)

Publication Number Publication Date
WO1998024143A1 true WO1998024143A1 (en) 1998-06-04

Family

ID=19484753

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR1996/000266 Ceased WO1998024143A1 (en) 1996-11-29 1996-12-30 Thin antennas

Country Status (4)

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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1564838A1 (en) * 2004-02-12 2005-08-17 Thomson Licensing S.A. Method of manufacturing an antenna and/or a network of antennas, antenna and/or network of antennas manufactured according to such a method

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20040006156A (en) * 2002-07-11 2004-01-24 (주)테나텍 Copper film circuit antenna and manufacturing process

Citations (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 (en) * 1988-07-21 1990-02-01 Seiko Epson Corp Antenna device for small-size television receiver
JPH03247021A (en) * 1990-02-26 1991-11-05 Nippon Telegr & Teleph Corp <Ntt> Portable radio equipment
US5083136A (en) * 1989-11-16 1992-01-21 Wells Donald H Transmission line coupling device with closed impedance matching loop
WO1993000721A1 (en) * 1991-06-27 1993-01-07 Siemens Aktiengesellschaft Planar zig-zag antenna
EP0443491B1 (en) * 1990-02-20 1996-05-01 Nippon Telegraph And Telephone Corporation Wrist watch type receiver

Patent Citations (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 (en) * 1988-07-21 1990-02-01 Seiko Epson Corp Antenna device for small-size television receiver
US5083136A (en) * 1989-11-16 1992-01-21 Wells Donald H Transmission line coupling device with closed impedance matching loop
EP0443491B1 (en) * 1990-02-20 1996-05-01 Nippon Telegraph And Telephone Corporation Wrist watch type receiver
JPH03247021A (en) * 1990-02-26 1991-11-05 Nippon Telegr & Teleph Corp <Ntt> Portable radio equipment
WO1993000721A1 (en) * 1991-06-27 1993-01-07 Siemens Aktiengesellschaft Planar zig-zag antenna

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, Vol. 14, No. 178, (E-915), 1990; & JP,A,02 031 578 (SEIKO EPSON). *
PATENT ABSTRACTS OF JAPAN, Vol. 16, No. 38, (E-1161), 1992; & JP,A,03 247 021 (NTT). *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1564838A1 (en) * 2004-02-12 2005-08-17 Thomson Licensing S.A. Method of manufacturing an antenna and/or a network of antennas, antenna and/or network of antennas manufactured according to such a method
FR2866479A1 (en) * 2004-02-12 2005-08-19 Thomson Licensing Sa METHOD FOR MANUFACTURING ANTENNA AND / OR ANTENNA NETWORK, ANTENNA AND / OR ANTENNA NETWORK MANUFACTURED BY SUCH A METHOD
US7418776B2 (en) 2004-02-12 2008-09-02 Thomson Licensing Method of manufacturing an antenna
CN1655397B (en) * 2004-02-12 2010-07-28 汤姆森许可贸易公司 Method of manufacturing an antenna

Also Published As

Publication number Publication date
KR19980040727A (en) 1998-08-17
TW328184B (en) 1998-03-11
EP0879486A1 (en) 1998-11-25

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