EP0087683A1 - Radiant-slot television aerial, especially for indoor use - Google Patents

Radiant-slot television aerial, especially for indoor use Download PDF

Info

Publication number
EP0087683A1
EP0087683A1 EP83101493A EP83101493A EP0087683A1 EP 0087683 A1 EP0087683 A1 EP 0087683A1 EP 83101493 A EP83101493 A EP 83101493A EP 83101493 A EP83101493 A EP 83101493A EP 0087683 A1 EP0087683 A1 EP 0087683A1
Authority
EP
European Patent Office
Prior art keywords
aerial
fact
slot
plate
radiant
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Withdrawn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
EP83101493A
Other languages
German (de)
English (en)
French (fr)
Inventor
Amedeo Donazzan
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.)
Fracarro Radioindustrie SpA
Original Assignee
Fracarro Radioindustrie SpA
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 Fracarro Radioindustrie SpA filed Critical Fracarro Radioindustrie SpA
Publication of EP0087683A1 publication Critical patent/EP0087683A1/en
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • H01Q13/10—Resonant slot antennas
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
    • H01Q19/10—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces

Definitions

  • This invention concerns a radiant slot television aerial, especially for indoor use, suitable for connecting to a televisor by means of a coaxial cable.
  • This invention aims to overcome the aforementioned drawbacks and to use aerials based upon the radiant slot principle for picking up television signals.
  • a television aerial for indoor use, suitable for connection to a television set by means of a cable, characterized by the fact that it comprises in combination, a plate having an electrically conducting front surface provided with a radiant slot which symmetrically leads off from a narrowed central area, and a reflecting screen situated at a distance from, and to the rear of the aforesaid conducting plate.
  • the indoor television aerial substantially comprises a metal plate 1, or a plate having an electrically conducting front surface, provided with a radiant slot 2 of suitable shape or configuration.
  • the conducting plate 1 is secured by means of insulating spacers 3, to a reflecting screen 4, situated at a distance from and to the rear of the plate itself.
  • the conducting plate 1 may be made from any type of metal whatsoever, starting for example from sheet material, so as to obtain the entire plate with radiant slot in a single blanking operation, or by providing a plastic plate, the front surface of which has been suitably metalized, or made electrically conductive by the printed circuit technique.
  • the reflecting screen may be made of any suitable material and may be of any suitable shape; in the illustrated example, the screen 4 is flat in shape and parallel to the plate 1, with its lateral edges bent towards the plate itself, it may however present a convex configuration, or any other configuration suitable for the intended purpose. In any case, the shape of the screen and its arrangement with respect to the plate with radiant slot, should be achieved experimentally each time in order to find the best conditions for picking up the television signals.
  • the radiant slot 2 presents a symmetrical shape with divergent edges which extend from both sides, leading off from a narrowed central area; in the case of fig. 2, the radiant slot 2 is substantially in the shape of two opposing coaxial diamonds, the edges of which are curved inwards.
  • figure 3 shows a conducting plate 1 in which the radiant slot 2 is composed of two opposing spiral-shaped parts or which follow one another starting from a central narrowed section; here again, the spiral slots have edges which diverge or which widen out progressively and then narrow towards the ends. Excellent results are achieved by giving the slot a substantially similar configuration to that of an equiangular spiral or Archimedean spiral, as shown.
  • fig. 4 shows a third example of a plate 1 with radiant slot 2, in which the slot is substantially composed of two opposing triangular shapes joined at the top.
  • a coaxial cable 5, for connecting the aerial to a television set is connected to the opposing edges of the radiant slot 2, in correspondence with the narrower central area; in order to avoid noises in the television signal and in order to optimize the performance of the television aerial thus achieved, the cable 5 must be arranged in such a way that it never ever crosses over the area of the plate containing the radiant slot 2.
  • the cable 5 must therefore be placed to the rear of, and coplanar to the plate itself, leading off tangentially or orthogonally to the axis of the slot 2, or can be arranged orthogonally to the plane of the plate itself.
  • the entire unit composed of the plate 1 with radiant slot and the reflecting screen 4 can be mounted on any type of fixed or pivotable support, according to the circumstances, without this constituting a limitation of this invention.

Landscapes

  • Aerials With Secondary Devices (AREA)
EP83101493A 1982-02-24 1983-02-17 Radiant-slot television aerial, especially for indoor use Withdrawn EP0087683A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT3064382U IT8230643V0 (it) 1982-02-24 1982-02-24 Antenna televisiva a fessura radiante particolarmente per interni.
IT3064382U 1982-02-24

Publications (1)

Publication Number Publication Date
EP0087683A1 true EP0087683A1 (en) 1983-09-07

Family

ID=11230493

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83101493A Withdrawn EP0087683A1 (en) 1982-02-24 1983-02-17 Radiant-slot television aerial, especially for indoor use

Country Status (2)

Country Link
EP (1) EP0087683A1 (it)
IT (1) IT8230643V0 (it)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2771552A1 (fr) * 1997-11-27 1999-05-28 Univ Lille Sciences Tech Transducteur d'emission-reception d'energie radioelectrique hyperfrequence
WO1999036988A1 (en) * 1998-01-16 1999-07-22 Rangestar International Corporation Antenna assembly for telecommunication devices
WO2003003500A1 (en) * 2001-06-26 2003-01-09 Isco International, Inc. Closed-slot resonator
US6509882B2 (en) 1999-12-14 2003-01-21 Tyco Electronics Logistics Ag Low SAR broadband antenna assembly
EP1950831A1 (en) * 2007-01-19 2008-07-30 SmartAnt Telecom Co., Ltd. Dipole array directional antenna
CN102025029A (zh) * 2009-09-18 2011-04-20 地爱克斯天线株式会社 天线
CN104218307A (zh) * 2014-08-20 2014-12-17 菲力克斯电子（宁波）有限公司 一种无源高增益天线
EP3032637A1 (en) * 2014-12-13 2016-06-15 Alcatel- Lucent Shanghai Bell Co., Ltd Radiating cable and method of manufacturing a radiating cable
EP3032638A1 (en) * 2014-12-13 2016-06-15 Alcatel- Lucent Shanghai Bell Co., Ltd Radiating cable and method of manufacturing a radiating cable

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2605411A (en) * 1946-04-11 1952-07-29 Henry J Riblet Directional slot antenna
US2935747A (en) * 1956-03-05 1960-05-03 Rca Corp Broadband antenna system
US3031665A (en) * 1958-12-20 1962-04-24 Sagem Wide band slot antenna
US3509465A (en) * 1965-10-22 1970-04-28 Sylvania Electric Prod Printed circuit spiral antenna having amplifier and bias feed circuits integrated therein
US3577196A (en) * 1968-11-25 1971-05-04 Eugene F Pereda Rollable slot antenna
US3638226A (en) * 1970-07-10 1972-01-25 Westinghouse Electric Corp Planar-type spiral antenna
US4222056A (en) * 1979-06-18 1980-09-09 General Motors Corporation Slot antenna lead connecting apparatus
FR2462030A1 (fr) * 1979-07-19 1981-02-06 Diela Sa Antenne a fente plane realisee sur un circuit imprime

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2605411A (en) * 1946-04-11 1952-07-29 Henry J Riblet Directional slot antenna
US2935747A (en) * 1956-03-05 1960-05-03 Rca Corp Broadband antenna system
US3031665A (en) * 1958-12-20 1962-04-24 Sagem Wide band slot antenna
US3509465A (en) * 1965-10-22 1970-04-28 Sylvania Electric Prod Printed circuit spiral antenna having amplifier and bias feed circuits integrated therein
US3577196A (en) * 1968-11-25 1971-05-04 Eugene F Pereda Rollable slot antenna
US3638226A (en) * 1970-07-10 1972-01-25 Westinghouse Electric Corp Planar-type spiral antenna
US4222056A (en) * 1979-06-18 1980-09-09 General Motors Corporation Slot antenna lead connecting apparatus
FR2462030A1 (fr) * 1979-07-19 1981-02-06 Diela Sa Antenne a fente plane realisee sur un circuit imprime

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2771552A1 (fr) * 1997-11-27 1999-05-28 Univ Lille Sciences Tech Transducteur d'emission-reception d'energie radioelectrique hyperfrequence
WO1999036988A1 (en) * 1998-01-16 1999-07-22 Rangestar International Corporation Antenna assembly for telecommunication devices
US6509882B2 (en) 1999-12-14 2003-01-21 Tyco Electronics Logistics Ag Low SAR broadband antenna assembly
WO2003003500A1 (en) * 2001-06-26 2003-01-09 Isco International, Inc. Closed-slot resonator
EP1950831A1 (en) * 2007-01-19 2008-07-30 SmartAnt Telecom Co., Ltd. Dipole array directional antenna
CN102025029A (zh) * 2009-09-18 2011-04-20 地爱克斯天线株式会社 天线
CN102025029B (zh) * 2009-09-18 2014-09-10 地爱克斯天线株式会社 天线
CN104218307A (zh) * 2014-08-20 2014-12-17 菲力克斯电子（宁波）有限公司 一种无源高增益天线
EP3032637A1 (en) * 2014-12-13 2016-06-15 Alcatel- Lucent Shanghai Bell Co., Ltd Radiating cable and method of manufacturing a radiating cable
EP3032638A1 (en) * 2014-12-13 2016-06-15 Alcatel- Lucent Shanghai Bell Co., Ltd Radiating cable and method of manufacturing a radiating cable

Also Published As

Publication number Publication date
IT8230643V0 (it) 1982-02-24

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Legal Events

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

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB LI LU NL SE

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

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19840508

RIN1 Information on inventor provided before grant (corrected)

Inventor name: DONAZZAN, AMEDEO