EP0012645A1 - Antenne aus zwei kreisförmigen flachen Ringen - Google Patents

Antenne aus zwei kreisförmigen flachen Ringen Download PDF

Info

Publication number
EP0012645A1
EP0012645A1 EP79400907A EP79400907A EP0012645A1 EP 0012645 A1 EP0012645 A1 EP 0012645A1 EP 79400907 A EP79400907 A EP 79400907A EP 79400907 A EP79400907 A EP 79400907A EP 0012645 A1 EP0012645 A1 EP 0012645A1
Authority
EP
European Patent Office
Prior art keywords
antenna
slot
plane
ground
axis
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.)
Granted
Application number
EP79400907A
Other languages
English (en)
French (fr)
Other versions
EP0012645B1 (de
Inventor
Henri Albert Paul Havot
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 AT79400907T priority Critical patent/ATE3923T1/de
Publication of EP0012645A1 publication Critical patent/EP0012645A1/de
Application granted granted Critical
Publication of EP0012645B1 publication Critical patent/EP0012645B1/de
Expired legal-status Critical Current

Links

Images

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
    • H01Q9/16—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole
    • H01Q9/28—Conical, cylindrical, cage, strip, gauze, or like elements having an extended radiating surface; Elements comprising two conical surfaces having collinear axes and adjacent apices and fed by two-conductor transmission lines
    • 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
    • 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
    • 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
    • H01Q9/16—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole
    • H01Q9/26—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole with folded element or elements, the folded parts being spaced apart a small fraction of operating wavelength

Definitions

  • the present invention relates to plate antennas with double circular loops.
  • Plate antennas have already been studied and we know, for example, that it is possible to establish an equivalence between the width of a plate antenna and the diameter of the circular strand of a doublet.
  • This equivalence has, for example, been dealt with in R.W.O. King entitled “The theory of linear antennas” published in 1356 by Harvard University Press, Cambridge, Mass., USA.
  • the object of the present invention is to provide an antenna very different from these known antennas and making it possible to obtain significantly better performance.
  • a plate antenna constituted by two tangent circular crowns, with a narrow slot oriented along the axis joining the centers of the crowns and going from the inner edge of a crown to the inner edge of the other ring, in the zone where they are tangent, said zone having a certain width in the direction perpendicular to said axis, one edge of said slot being excited in the immediate vicinity of the center of symmetry of the antenna while the midpoint at least one ring located on said axis on the other side of the center with respect to the point of tangency is to ground.
  • the antenna is produced on a double-sided printed circuit, the power supply being produced by a line with a practically semi-circular band, the radius of which is substantially the arithmetic mean of the inner and outer circles of a crown, of which a half-crown serves as a ground plane with a first end connected to the point of excitation situated on the other side of the slot relative to the half-crown serving as ground plane, passing under the slot, and its other end is connected, through the insulating sheet of the printed circuit to the core of a coaxial cable whose outer conductor , to ground, is connected to the ground point of the antenna, the coaxial cable being normal to the plane of the antenna.
  • the antenna is completed by a reflective plane disposed behind the antenna, parallel to its plane, said coaxial cable crossing this plane.
  • the symmetrical point of said ground point with respect to the center of symmetry of the antenna is connected to said reflective plane which is to ground.
  • the antenna of FIG. 1a is produced on a double-sided printed circuit made of epoxy glass ( ⁇ r Il 4.3) with a thickness of approximately 0.3 mm.
  • the radiating part of the antenna consists of two conductive rings 1 and 2, the outer circles 3 and 4 of which are tangent to the center of symmetry 5 of the antenna.
  • the two crowns 1 and 2 are of the same dimensions, that is to say that the diameters of 3 and 4 are equal as well as the diameters of the interior circles 6 and 7.
  • a slot oriented along the axis 10 joining the centers 11 and 12 of the crowns. Slot 9 goes from circle 6 to circle 7, i.e. crosses longitudinally zone 8.
  • the large circles 3 and 4 are, towards the zone 8, connected together before reaching the slot 9 which creates an electrical continuity between the two crowns on either side of the slot 9.
  • the segments 13 and 14 are parallel to the axis 10 and are spaced from each other by an amount which is practically of the order of the width of the rings.
  • Fig. 1a also shows, on a larger scale, the area 8 and, in particular, the excitation point 15 of the antenna located on the edge 16 of the slot 9 opposite the center of symmetry 5. From point 15, located same side of the printed circuit as the crowns 1 and 2, by a conductor which crosses the insulating sheet and is connected to one end of the conductor supplied with a strip line 17 which passes under the slot 9, then forming an elbow joins the half-circle center line of half of the crown 1 located on the other side of the axis 10 with respect to the edge 16 of the slot.
  • the conductor 17 has its other end located on the axis 10 in the middle of the crown 1, where it is connected to the core 18 of a coaxial cable whose core passes through the insulating sheet of the printed circuit and the outer conductor 19 is electrically connected to the conductive surface of the ring 1.
  • the coaxial cable 19 is perpendicular to the plane of the insulating sheet 20 on one side of which the conductive rings 1 and 2 are printed while on the other side is printed the line 17.
  • FIG. 1b shows that the core 18 crosses 20 while 19 is welded to 1.
  • the cable 19 is shown passing through a reflective plane 21, parallel to the plane of the sheet 20, therefore of the crowns 1 and 2.
  • the plane reflector 21, like the external conductor 19, is grounded, which means that the small circle 19 in FIG. 1a is grounded.
  • the reflector 21 can be square.
  • m is the wavelength in a vacuum corresponding to the minimum frequency of the bandwidth of the antenna used during a series of measurements.
  • the measurements were carried out on the radiating element whose geometric quantities are indicated above, by varying the frequency from 2.1 to 3.6 GHz.
  • the standing wave ratio (R.O.S.) of the antenna with an impedance reduced to 50 ohms remains less than 2.5.
  • the impedance of a radiating element can be modified by varying the width of the radiating strand, that is to say the width of the crowns.
  • the antenna radiation patterns show only one main lobe and no secondary lobe in the frequency range considered.
  • the directivity calculated from the diagrams is between 10 dB for the lowest frequencies and 14.7 for the highest frequency.
  • the average value of the directivity is, in the middle of the band, greater than 12 dB.
  • the distance between the segments 13 and 14 is as small as possible. Indeed, they tend to deform the lobes. However, they cannot be reduced below a certain limit to allow the passage of line 17, with its elbow, in zone 8.
  • the distance between 13 and 14 is chosen to be less than the width of the strands. , i.e. crowns. Note that reducing the width of the strands increases the impedance of the radiation. However, for a given dielectric constant of the sheet 20, a reduction in the width of the strands must be accompanied by a reduction in the line 17 in order for the strip line 17 to function under good conditions. The reduction in the width of the strands therefore has a limit from the point of view of practical operation. Reducing the width of the slot 9 has a capacitive effect on the impedance.
  • Fig. 2 shows an array of two radiating elements of FIG. 1 which are aligned along the axis 10.
  • the first element 22 includes, like that of FIG. 1 two crowns 1 and 2 while the second element 23 comprises two crowns 1 'and 2' which are respectively symmetrical with the crowns 1 and 2 with respect to the straight line 24 perpendicular to the axis 10 at the point of external tangency of the crown 1 Crowns 1 and 1 'are tangent.
  • the power cable 25 ends at the point of intersection of 10 and 24, with its outer conductor welded to the plates of the crowns 1 and 2.
  • the plate has a certain width , in the direction of 24, limited by segments 26 and 27, the distance of which may be less than that of 13 and 14.
  • the core 28 of the cable 25 is connected, on the other side of the dielectric sheet, to two small segments 29 and 29 'symmetrical and oriented along 10, the segment 29 being connected to the strip line 17 and the segment 29' to a strip line 17 ', symmetrical with 17. Furthermore, there is the slot 9 and its symmetrical 9 ', as well as the excitation point 15 and its symmetrical 15'.
  • the network of two elements can be supplied by a cable 25 having an impedance of 100 ohms, provided that the width of the strands is appropriately chosen. that is to say weaker than in the element of FIG. 1.
  • the openings obtained in the H plane are the same for the frequency range as above, between 16 ° and 26 ° or substantially half of the isolated radiating element. Note that for the frequency of 3.2 GHz, we obtain lower lobes than expected, ie - 20 dB, instead of 13.2 dB usually obtained.
  • FIG. 3 shows an array of four radiating elements in FIG. 1 which constitute two pairs of antennas in FIG. 2.
  • This network comprises the elements 30, 31, 32 and 33, which are respectively tangent two by two.
  • a power cable 34 is connected to the point of tangency of the elements 31 and 32. Its core is, this time connected to two strip lines symmetrical with respect to the straight line 35, perpendicular to the axis 10 at the point of tangency of 31 and 32.
  • These lines 36 and 36 ' are also symmetrical with the lines 17 and 17' of the antenna of FIG. 2 relative to the axis 10, that is to say that they run under the halves of crowns which include the excitation point.
  • the line 36 passes at a certain distance from the excitation point 37 and extends under the adjacent crown half to reach the point of tangency 38 of the elements 30 and 31 where it is derived in two lines 39 and 40, quite similar to 17 and 17 ', the ends of which are the excitation points 37 of 31 and 41 of 30. From line 36', we also find the symmetrical lines 39 'and 40' ending, from 38 ', point of tangency of 32 and 33, at excitation points 38' of 32 and 41 'of 33.
  • the radiating element of the invention simply makes it possible, using the strip line technique, to produce networks with a large number of elements.
  • the radiating element of Figs. 1a and 1b can be used at higher frequencies, reducing its dimensions accordingly, in measuring cavities.

Landscapes

  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Waveguide Aerials (AREA)
  • Details Of Aerials (AREA)
  • Support Of Aerials (AREA)
EP79400907A 1978-11-27 1979-11-23 Antenne aus zwei kreisförmigen flachen Ringen Expired EP0012645B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT79400907T ATE3923T1 (de) 1978-11-27 1979-11-23 Antenne aus zwei kreisfoermigen flachen ringen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7834424A FR2442520A1 (fr) 1978-11-27 1978-11-27 Antenne en plaques a double boucles circulaires
FR7834424 1978-11-27

Publications (2)

Publication Number Publication Date
EP0012645A1 true EP0012645A1 (de) 1980-06-25
EP0012645B1 EP0012645B1 (de) 1983-06-22

Family

ID=9215772

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79400907A Expired EP0012645B1 (de) 1978-11-27 1979-11-23 Antenne aus zwei kreisförmigen flachen Ringen

Country Status (5)

Country Link
US (1) US4443805A (de)
EP (1) EP0012645B1 (de)
AT (1) ATE3923T1 (de)
DE (1) DE2965766D1 (de)
FR (1) FR2442520A1 (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0085486A1 (de) * 1982-01-15 1983-08-10 The Marconi Company Limited Antennenanordnung
US4479127A (en) * 1982-08-30 1984-10-23 Gte Products Corporation Bi-loop antenna system
US4746927A (en) * 1984-11-08 1988-05-24 U.S. Philips Corporation VOR antenna design
WO1988009065A1 (en) * 1987-05-08 1988-11-17 Darrell Coleman Broad frequency range aerial
FR2775128A1 (fr) * 1998-02-19 1999-08-20 Henri Havot Antenne miniaturisee
FR2775127A1 (fr) * 1998-02-17 1999-08-20 Tekelec Temex Antenne en plaque
EP0959523A1 (de) * 1998-05-19 1999-11-24 Henri Albert Paul Havot Kapazitiv gespeiste Plattenantenne mit zwei kreisförmigen Schleifen

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2556510B1 (fr) * 1983-12-13 1986-08-01 Thomson Csf Antenne periodique plane
GB9222213D0 (en) * 1992-10-22 1992-12-02 Pilkington Glass Ltd Translucent article having induction loop antenna
US5872546A (en) * 1995-09-27 1999-02-16 Ntt Mobile Communications Network Inc. Broadband antenna using a semicircular radiator
US6259416B1 (en) 1997-04-09 2001-07-10 Superpass Company Inc. Wideband slot-loop antennas for wireless communication systems
US20100207831A1 (en) * 2009-02-18 2010-08-19 Wu Huei-Chi Loop Dipole Antenna Module
JP4952835B2 (ja) * 2009-11-20 2012-06-13 株式会社デンソー 変形折返しダイポールアンテナ及びそのインピーダンス調整方法、アンテナ装置
RU2465696C1 (ru) * 2011-09-13 2012-10-27 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Мурманский государственный технический университет" (ФГБОУ ВПО "МГТУ") Вибратор горизонтальный укороченный повышенной диапазонности

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR938846A (fr) * 1945-08-13 1948-10-26 Int Standard Electric Corp Antennes
US2935747A (en) * 1956-03-05 1960-05-03 Rca Corp Broadband antenna system
GB853472A (en) * 1956-04-07 1960-11-09 Emi Ltd Improvements in or relating to aerials
FR2119901A1 (de) * 1970-11-21 1972-08-11 Sony Corp
NL7300260A (de) * 1972-01-10 1973-07-12
FR2311422A1 (fr) * 1975-05-15 1976-12-10 France Etat Doublet replie en plaques

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2279233A1 (fr) * 1974-07-18 1976-02-13 France Etat Doublet replie epais raccourci
FR2298200A1 (fr) * 1975-01-17 1976-08-13 France Etat Doublet replie epais accordable dans une bande de frequence de deux octaves

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR938846A (fr) * 1945-08-13 1948-10-26 Int Standard Electric Corp Antennes
US2935747A (en) * 1956-03-05 1960-05-03 Rca Corp Broadband antenna system
GB853472A (en) * 1956-04-07 1960-11-09 Emi Ltd Improvements in or relating to aerials
FR2119901A1 (de) * 1970-11-21 1972-08-11 Sony Corp
NL7300260A (de) * 1972-01-10 1973-07-12
FR2311422A1 (fr) * 1975-05-15 1976-12-10 France Etat Doublet replie en plaques

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0085486A1 (de) * 1982-01-15 1983-08-10 The Marconi Company Limited Antennenanordnung
US4479127A (en) * 1982-08-30 1984-10-23 Gte Products Corporation Bi-loop antenna system
US4746927A (en) * 1984-11-08 1988-05-24 U.S. Philips Corporation VOR antenna design
WO1988009065A1 (en) * 1987-05-08 1988-11-17 Darrell Coleman Broad frequency range aerial
FR2775127A1 (fr) * 1998-02-17 1999-08-20 Tekelec Temex Antenne en plaque
FR2775128A1 (fr) * 1998-02-19 1999-08-20 Henri Havot Antenne miniaturisee
EP0938157A1 (de) * 1998-02-19 1999-08-25 Henri Albert Paul Havot Miniaturisierte Antenne
EP0959523A1 (de) * 1998-05-19 1999-11-24 Henri Albert Paul Havot Kapazitiv gespeiste Plattenantenne mit zwei kreisförmigen Schleifen
FR2779011A1 (fr) * 1998-05-19 1999-11-26 Henri Havot Antenne en plaques a double boucles circulaires excitees par capacite

Also Published As

Publication number Publication date
EP0012645B1 (de) 1983-06-22
FR2442520A1 (fr) 1980-06-20
DE2965766D1 (en) 1983-07-28
US4443805A (en) 1984-04-17
FR2442520B1 (de) 1983-02-25
ATE3923T1 (de) 1983-07-15

Similar Documents

Publication Publication Date Title
EP0575211B1 (de) Strahlerelement einer Antenne mit breitbandigem Durchlassbereich und aus derartigen Elementen bestehende Gruppenantenne
CA1291560C (fr) Antenne de type helice et son procede de realisation
EP0012645B1 (de) Antenne aus zwei kreisförmigen flachen Ringen
EP0243289B1 (de) Plattenantenne mit zwei gekreuzten Polarisationen
EP3646409B1 (de) Kollineare antennenstruktur mit unabhängigen zugängen
EP0145597B1 (de) Ebene periodische Antenne
FR2652453A1 (fr) Antenne coaxiale a fentes du type a alimentation a ondes progressives.
FR2669776A1 (fr) Antenne hyperfrequence a fente a structure de faible epaisseur.
FR2691015A1 (fr) Antenne-réseau de type micro-ruban à faible épaisseur mais à large bande passante.
WO1998027616A1 (fr) Antenne reseau imprimee large bande
EP0082751B1 (de) Mikrowellenstrahler und seine Verwendung für eine Antenne mit elektronischer Abtastung
FR2965669A1 (fr) Reflecteur d'antenne large bande pour une antenne filaire plane a polarisation circulaire et procede de realisation du deflecteur d'antenne
EP3671953A1 (de) Monopolare draht-plattenantenne
CA2460820C (fr) Antenne a large bande ou multi-bandes
EP3235058A1 (de) Drahtplattenantenne mit einem kapazitiven dach mit einem schlitz zwischen der speisungssonde und dem kurzschlussdraht
EP0467818B1 (de) Übergangsstück zwischen elektromagnetischen Hohlleitern, insbesondere zwischen einem Rundhohlleiter und einem Koaxialhohlleiter
CA2489776C (fr) Antenne a brins a polarisation circulaire
EP0110479B1 (de) Dünne Doppelstrahlerrichtantenne für Mikrowellen
CA2392696C (fr) Antenne ciseaux a large bande
EP4203185B1 (de) Verbesserte breitbandige drahtantenne
EP0959523A1 (de) Kapazitiv gespeiste Plattenantenne mit zwei kreisförmigen Schleifen
CA2800949C (fr) Antenne compacte a large bande a double polarisation lineaire
FR2713020A1 (fr) Elément rayonnant du type dipôle réalisé en technologie imprimée, procédé d'ajustement de l'adaptation et réseau correspondants.
FR2494047A1 (fr) Antenne a reseau plan a polarisation variable et a faibles lobes secondaires
FR2582157A1 (fr) Antenne a pas de balayage reduit dans un large secteur angulaire

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 GB IT NL SE

17P Request for examination filed

Effective date: 19801223

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Designated state(s): AT BE CH DE GB IT NL SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19830622

Ref country code: NL

Effective date: 19830622

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 19830622

REF Corresponds to:

Ref document number: 3923

Country of ref document: AT

Date of ref document: 19830715

Kind code of ref document: T

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Effective date: 19830701

REF Corresponds to:

Ref document number: 2965766

Country of ref document: DE

Date of ref document: 19830728

NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

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

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19840927

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 19841231

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19850124

Year of fee payment: 6

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CH

Effective date: 19851130

Ref country code: BE

Effective date: 19851130

BERE Be: lapsed

Owner name: HAVOT HENRI ALBERT PAUL

Effective date: 19851130

GBPC Gb: european patent ceased through non-payment of renewal fee
REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19860801

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19881118