EP0116487A1 - Ground Plane Antenne - Google Patents

Ground Plane Antenne Download PDF

Info

Publication number: EP0116487A1
Authority: EP; European Patent Office
Prior art keywords: antenna; length; hundred; whip; ground plane
Prior art date: 1983-01-13
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

EP19840400038

Other languages

English (en)

French (fr)

Other versions

EP0116487B1 (de

Inventor

Frédéric Ngo Bui Hung

Yves Foissac

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.)

Laboratoire D'etudes Et De Recherches Chimiques Lerc Sa

Original Assignee

Laboratoire D'etudes Et De Recherches Chimiques Lerc Sa

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.)

1983-01-13

Filing date

1984-01-09

Publication date

1984-08-22

1984-01-09 Application filed by Laboratoire D'etudes Et De Recherches Chimiques Lerc Sa filed Critical Laboratoire D'etudes Et De Recherches Chimiques Lerc Sa

1984-08-22 Publication of EP0116487A1 publication Critical patent/EP0116487A1/de

1988-09-21 Application granted granted Critical

1988-09-21 Publication of EP0116487B1 publication Critical patent/EP0116487B1/de

Status Expired legal-status Critical Current

Links

238000010586 diagram Methods 0.000 claims description 4
230000001131 transforming effect Effects 0.000 claims 1
230000005855 radiation Effects 0.000 description 6
230000005540 biological transmission Effects 0.000 description 5
239000002689 soil Substances 0.000 description 3
239000004020 conductor Substances 0.000 description 2
240000008042 Zea mays Species 0.000 description 1
230000008878 coupling Effects 0.000 description 1
238000010168 coupling process Methods 0.000 description 1
238000005859 coupling reaction Methods 0.000 description 1
230000002349 favourable effect Effects 0.000 description 1
230000001869 rapid Effects 0.000 description 1
230000009466 transformation Effects 0.000 description 1

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
- 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
- H01Q9/32—Vertical arrangement of element
- H01Q9/38—Vertical arrangement of element with counterpoise

Definitions

the invention relates to a broadband antenna and, more particularly but not exclusively, to a ground plane antenna for a fixed or semi-mobile station, covering a frequency band greater than one octave for a rate of standing waves at most equal to three.
This antenna is also advantageous in that it is favorable to distant links because it radiates at an angle close to the horizontal.
this artificial soil currently consists of three or four horizontal or inclined conductors connected together at the foot of the whip towards which they converge.
the ratio is of fifty.
a result which the invention aims to obtain is an antenna of the type cited above, having radioelectric qualities optimized throughout the wide frequency band where it is intended to operate without being bulky and without requiring either a tuning box , nor resistive loads.
the counterweights have a length of between one hundred and forty and one hundred and eighty percent of the length of the whip.
the antenna 1 comprises a radiating strand or "whip" 2, having a length L equal, approximately, to a quarter of the wavelength of the median frequency of the useful band.
the counterweights 4, 5, 6 like the whip 2 can be of any known type and in particular can be dismantled and / or be made in one or more sections 7, 8, 9 of short length to facilitate transport.
this antenna 1 is coupled directly or by any known means, such as a system 10 transformer of impedance in a determined ratio, in order to adapt the characteristic impedance of the antenna 1 to that of said transmission line or as a broadband coupler (not shown) of the type capable of constituting a network having a defined diagram.
any known means such as a system 10 transformer of impedance in a determined ratio, in order to adapt the characteristic impedance of the antenna 1 to that of said transmission line or as a broadband coupler (not shown) of the type capable of constituting a network having a defined diagram.
this antenna works like a dipole with two radiating strands, one real constituted by the whip the other fictitious constituted by its image reflected by ground plane. Also, although described with reference to a ground plane antenna, the present invention also finds application in wide band dipole antennas composed of two radiating strands.
one of the radiating strands of the antenna has a length which is between one hundred and forty and one hundred and eighty percent of the length of the other radiating strand.
counterweights 4, 5, 6 which have a length KL of between one hundred and forty and one hundred and eighty percent of the length of the whip 2 and preferably equal to one hundred sixty percent of that length of the whip.
the whips and counterweights will be respectively one thousand eight hundred and two thousand nine hundred millimeters long in the old band (twenty six to seventy sixteen megahertz) or one thousand six hundred and two thousand five hundred millimeters in the new band (thirty to eighty eight megahertz).
the counterweights 4, 5, 6 each form with the whip 2 an angle of the order of one hundred and thirty five degrees and are three in number.
the inventors have in fact found that with such an asymmetrical antenna in such proportions, the variation in the resistance to radiation is much smaller than with a symmetrical dipole or a conventional ground plane antenna whose counterweights have lengths equal to that of the whip.
the asymmetrical antenna in the aforementioned characteristic ratio is, for a standing wave rate less than three, directly adapted, in a frequency band of more than one octave, to a characteristic impedance transmission line. one hundred and thirty five ohms.
this antenna can of course be adapted to any other characteristic impedance of the line.
the antenna thus obtained can obviously be combined with at least one other antenna by a coupler.

Landscapes

Details Of Aerials (AREA)

EP19840400038 1983-01-13 1984-01-09 Ground Plane Antenne Expired EP0116487B1 (de)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
FR8300736		1983-01-13
FR8300736A FR2539557B3 (fr)	1983-01-13	1983-01-13	Antenne a large bande

Publications (2)

Publication Number	Publication Date
EP0116487A1 true EP0116487A1 (de)	1984-08-22
EP0116487B1 EP0116487B1 (de)	1988-09-21

Family

ID=9285049

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP19840400038 Expired EP0116487B1 (de)	1983-01-13	1984-01-09	Ground Plane Antenne

Country Status (3)

Country	Link
EP (1)	EP0116487B1 (de)
DE (1)	DE3474238D1 (de)
FR (1)	FR2539557B3 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
WO1998059390A1 (en) *	1997-06-25	1998-12-30	Telefonaktiebolaget Lm Ericsson	Retractable tripod antenna
FR2783097A1 (fr) *	1998-09-04	2000-03-10	Alain Leseine	Antenne d'emission reception d'ondes radio a polarisation verticale a angle d'elevation du lobe de rayonnement variable

Citations (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2124424A (en) *	1936-01-03	1938-07-19	Gen Electric	Antenna system
US2275646A (en) *	1939-07-18	1942-03-10	Rca Corp	Antenna
US2425585A (en) *	1943-12-13	1947-08-12	Hazeltine Research Inc	Wave-signal antenna
US2704811A (en) *	1950-06-19	1955-03-22	Andrew W Walters	Cylindrical antenna
US3656167A (en) *	1969-11-25	1972-04-11	Plessey Co Ltd	Dipole radio antennae

1983
- 1983-01-13 FR FR8300736A patent/FR2539557B3/fr not_active Expired
1984
- 1984-01-09 EP EP19840400038 patent/EP0116487B1/de not_active Expired
- 1984-01-09 DE DE8484400038T patent/DE3474238D1/de not_active Expired

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2124424A (en) *	1936-01-03	1938-07-19	Gen Electric	Antenna system
US2275646A (en) *	1939-07-18	1942-03-10	Rca Corp	Antenna
US2425585A (en) *	1943-12-13	1947-08-12	Hazeltine Research Inc	Wave-signal antenna
US2704811A (en) *	1950-06-19	1955-03-22	Andrew W Walters	Cylindrical antenna
US3656167A (en) *	1969-11-25	1972-04-11	Plessey Co Ltd	Dipole radio antennae

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
WO1998059390A1 (en) *	1997-06-25	1998-12-30	Telefonaktiebolaget Lm Ericsson	Retractable tripod antenna
US6084549A (en) *	1997-06-25	2000-07-04	Telefonaktiebolaget Lm Ericsson	Retractable tripod antenna
FR2783097A1 (fr) *	1998-09-04	2000-03-10	Alain Leseine	Antenne d'emission reception d'ondes radio a polarisation verticale a angle d'elevation du lobe de rayonnement variable

Also Published As

Publication number	Publication date
DE3474238D1 (de)	1988-10-27
FR2539557B3 (fr)	1985-12-20
FR2539557A1 (fr)	1984-07-20
EP0116487B1 (de)	1988-09-21

Legal Events

Date	Code	Title	Description
1984-06-23	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
1984-08-22	AK	Designated contracting states	Designated state(s): BE CH DE FR GB IT LI LU NL SE
1984-12-27	RIN1	Information on inventor provided before grant (corrected)	Inventor name: NGO BUI HUNG, FREDERIC Inventor name: FOISSAC, YVES
1985-05-02	17P	Request for examination filed	Effective date: 19850214
1987-08-12	17Q	First examination report despatched	Effective date: 19870626
1988-08-06	GRAA	(expected) grant	Free format text: ORIGINAL CODE: 0009210
1988-09-21	AK	Designated contracting states	Kind code of ref document: B1 Designated state(s): BE CH DE FR GB IT LI LU NL SE
1988-09-21	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	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: 19880921 Ref country code: NL Effective date: 19880921 Ref country code: SE Effective date: 19880921
1988-10-19	GBT	Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
1988-10-27	REF	Corresponds to:	Ref document number: 3474238 Country of ref document: DE Date of ref document: 19881027
1989-01-31	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19890131
1989-03-16	NLV1	Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
1989-07-27	PLBE	No opposition filed within time limit	Free format text: ORIGINAL CODE: 0009261
1989-07-27	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT
1989-09-13	26N	No opposition filed
1998-01-29	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: BE Payment date: 19980129 Year of fee payment: 15 Ref country code: CH Payment date: 19980129 Year of fee payment: 15
1999-01-12	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: FR Payment date: 19990112 Year of fee payment: 16
1999-01-14	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: GB Payment date: 19990114 Year of fee payment: 16
1999-01-16	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: DE Payment date: 19990116 Year of fee payment: 16
1999-01-31	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19990131 Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19990131 Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19990131
1999-07-31	BERE	Be: lapsed	Owner name: LABORATOIRE D'ETUDES ET DE RECHERCHES CHIMIQUES L Effective date: 19990131
1999-09-15	REG	Reference to a national code	Ref country code: CH Ref legal event code: PL
2000-01-09	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20000109
2000-08-30	GBPC	Gb: european patent ceased through non-payment of renewal fee	Effective date: 20000109
2000-09-29	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20000929
2000-11-01	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20001101
2000-11-10	REG	Reference to a national code	Ref country code: FR Ref legal event code: ST
2009-05-29	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19990131

Publication	Publication Date	Title
EP0520851B1 (de)	1995-11-29	Antennenkombination für den Empfang von Signalen von Satelliten und Bodenstationen, insbesondere für den Empfang von digitalen Ton-Rundfunksignalen
CA2821250C (fr)	2021-01-12	Antenne d'emission et de reception multifaisceaux a plusieurs sources par faisceau, systeme d'antennes et systeme de telecommunication par satellite comportant une telle antenne
FR2810163A1 (fr)	2001-12-14	Perfectionnement aux antennes-sources d'emission/reception d'ondes electromagnetiques
FR2760919A1 (fr)	1998-09-18	Systeme de communication par satellite mobile
FR2845829A1 (fr)	2004-04-16	Systeme d'antenne a double reflecteur a foyer en forme d'anneau multi bande
CA2029378A1 (fr)	1991-05-25	Antenne a polarisation circulaire, notamment pour reseau d'antennes
EP0548876B1 (de)	1996-10-09	Asymmetrische Spiegelantenne mit zwei Reflektoren
CA2356725A1 (fr)	2002-03-25	Lentille divergente a dome pour ondes hyperfrequences et antenne comportant une telle lentille
EP0116487B1 (de)	1988-09-21	Ground Plane Antenne
EP0288988A1 (de)	1988-11-02	Adaptives Antennensystem für Hochfrequenz, insbesondere für den UHF-Bereich
FR2814285A1 (fr)	2002-03-22	Antenne helicoidale a pas variable, et procede correspondant
FR2641133A1 (de)	1990-06-29
EP1393411B1 (de)	2013-02-27	Resonatorantenne mit rundstrahlcharakteristik
FR2650441A1 (fr)	1991-02-01	Antenne radioelectrique a tres large bande et a faible taux d'onde stationnaire
EP1339134A1 (de)	2003-08-27	Breitbandiges Monopol- oder Dipolantennenelement
CA2327371C (fr)	2009-09-08	Source rayonnante pour antenne d'emission et de reception destinee a etre installee a bord d'un satellite
WO2009077529A2 (fr)	2009-06-25	Antenne active tres large bande pour radar passif
EP3155689B1 (de)	2018-06-06	Flachantenne zur satellitenkommunikation
FR3013909A1 (fr)	2015-05-29	Cornet, antennaire elementaire, structure antennaire et procede de telecommunication associes
EP0352160A1 (de)	1990-01-24	Rundstrahlantenne, insbesondere für die Aussendung von Rundfunk- und Fernsehsignalen im Dezimeterwellengebiet und Strahlungssystem, gebildet aus einer Gruppierung dieser Antennen
EP0762534A1 (de)	1997-03-12	Verfahren zur Verbreiterung des Strahlungsdiagramms einer Gruppenantenne mit verteilten Elementen in einem Volumen
FR2867899A1 (fr)	2005-09-23	Dispositif semi-conducteur a antenne et ecran collecteur
EP0254373A1 (de)	1988-01-27	Antenne für hohe Frequenzen
EP0792528A1 (de)	1997-09-03	Antenne vom typ halbwellendipol
FR2609214A1 (fr)	1988-07-01	Antenne a large bande, utilisable en ondes metriques