EP0461000A1 - Antenna tuner unit for tactical HF apparatus - Google Patents

Antenna tuner unit for tactical HF apparatus Download PDF

Info

Publication number
EP0461000A1
EP0461000A1 EP91401376A EP91401376A EP0461000A1 EP 0461000 A1 EP0461000 A1 EP 0461000A1 EP 91401376 A EP91401376 A EP 91401376A EP 91401376 A EP91401376 A EP 91401376A EP 0461000 A1 EP0461000 A1 EP 0461000A1
Authority
EP
European Patent Office
Prior art keywords
winding
antenna tuning
box according
tuning box
parts
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
EP91401376A
Other languages
German (de)
French (fr)
Other versions
EP0461000B1 (en
Inventor
Jean-Claude Balin
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.)
Thales SA
Original Assignee
Thomson CSF 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.)
Filing date
Publication date
Application filed by Thomson CSF SA filed Critical Thomson CSF SA
Publication of EP0461000A1 publication Critical patent/EP0461000A1/en
Application granted granted Critical
Publication of EP0461000B1 publication Critical patent/EP0461000B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q7/00—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
    • H01Q7/06—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop with core of ferromagnetic material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F17/00—Fixed inductances of the signal type 
    • H01F17/04—Fixed inductances of the signal type  with magnetic core
    • H01F17/043—Fixed inductances of the signal type  with magnetic core with two, usually identical or nearly identical parts enclosing completely the coil (pot cores)
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/08—Cooling; Ventilating

Definitions

  • the present invention relates to an antenna tuning box for portable or self-supporting high-frequency tactical radio sets.
  • the tuning boxes of known antennas are produced either using scrollable inductors, or using binary decreasing inductive weights controlled by a microprocessor as a function of the tuning frequency.
  • the existing embodiments which for the most part use air inductors lead to sizing in large volumes.
  • Certain embodiments which, in order to reduce the bulk, use inductors comprising magnetic circuits are not satisfactory, however, because they are the cause of the significant magnetic losses which take place in the circuits when they work in the saturated parts of their hysteresis cycle. .
  • the object of the invention is to overcome the aforementioned drawbacks.
  • the subject of the invention is an antenna tuning box for high frequency tactical radio sets comprising several chord coils, characterized in that at least one coil comprises at least one winding arranged inside of '' a ferrite pot composed of two parts separated by an air gap.
  • the main advantage of the invention is that it allows an effective reduction in the volume of the antenna boxes of portable high-frequency transmitter stations in a very large ratio.
  • the antenna box which is represented in FIG. 1 comprises a set of tuning coils referenced by 11, 1 n mounted between two metal plates 1, 2.
  • the antenna box comprises in known manner varying inductive weights following a geometric progression of reason close to two.
  • the maximum inductive value which is achieved is 200 microhenrys, which leads to a maximum inductive weight of 100 microhenrys for a first coil, 50 microhenrys for a second and so on up to 100 x 2 -n microhenrys.
  • eleven inductive weights are sufficient to cover the high frequency range 1.5 to 30 MHz of the stations to which the invention applies.
  • each coil comprises, as shown in FIG. 2, at least one winding 4 enclosed inside a ferrite pot 5 of standard model 18/11 by example, made of H32 type material sold by the company LCC or equivalent materials such as K1 or 4C6 sold respectively by the companies SIEMENS and RTC which have permeabilities of the order of 200 and specific inductances of 40 or 25 nanohenrys per turns.
  • the two parts of the ferrite pot 5 a and 5 b are kept separated from each other by a gap 6 to reduce the effective permeability and obtain a specific inductance of around 10 nanohenrys per turn.
  • This air gap is obtained by inserting elastic insulating washers 7 between the bottoms of the ferrite pots 5 and the carcass 8 on which are wound the 'turns of the winding 4. In this way all the coils of the antenna box which include an appreciable value of inductor are produced according to an identical assembly, only the number of turns is adapted to obtain for each specific coil the desired inductor.
  • the coils can be placed one against the other, leaving just the necessary functional clearance without there being any risk of obtaining an appreciable coupling between the different inductors.
  • the carcass 8 can be impregnated and can comprise a central core 9 solid in polymerizable resin of the type sold under the trademark "Scotchcast” sold by the company 3M.
  • the plates 2 and 3 are made of a metallic material that is a good conductor of heat, aluminum for example, and for ease of production, a plate can optionally be formed by a wall of the transmitting station.
  • Clamping screws 10 made of insulating material, for example nylon, are provided for clamping the pots between the plates 2 and 3 or of conductive material disposed around the ferrite pots according to FIG. 3.
  • the carcass 8 can be divided into two compartments as shown in FIG. 2.
  • the power which the antenna box can thus support is 50 watts PEP (where PEP is the abbreviation of the Anglo-Saxon term "Peak envelop power) for a linearity of -36 dBC on the intermodulation of rank 3 and 25 Watts permanent average.
  • PEP is the abbreviation of the Anglo-Saxon term "Peak envelop power
  • the insertion loss at the most unfavorable frequencies is around 1.5 dB.
  • the intermodulation of rank 3 is around -45 dB PEP .

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Details Of Aerials (AREA)
  • Support Of Aerials (AREA)
  • Transmitters (AREA)

Abstract

The antenna unit includes several tuning coils (11..1n), whose self-inductive weightings are switchable. At least one coil includes at least one winding (4) arranged inside a ferrite pot core (5) composed of two parts (5a, 5b) separated by an air gap (6). Applications: HF portable radio transmitter set. <IMAGE>

Description

La présente invention concerne une boîte d'accord d'antenne pour postes radio tactiques hautes fréquences portables ou autoportés.The present invention relates to an antenna tuning box for portable or self-supporting high-frequency tactical radio sets.

Les boîtes d'accord d'antennes connues sont réalisées soit à l'aide de selfs déroulables, soit à l'aide de poids selfiques à décroissance binaire commandés par un microprocesseur en fonction de la fréquence d'accord. Cependant les réalisations existantes qui pour la plupart utilisent des selfs à air conduisent à des dimensionnements en volume importants. Certaines réalisations qui pour diminuer l'encombrement utilisent des selfs comportant des circuits magnétiques ne sont cependant pas satisfaisantes car elles sont la cause des pertes magnétiques importantes qui ont lieu dans les circuits lorsque ceux-ci travaillent dans les parties saturées de leur cycle d'hystérésis.The tuning boxes of known antennas are produced either using scrollable inductors, or using binary decreasing inductive weights controlled by a microprocessor as a function of the tuning frequency. However, the existing embodiments which for the most part use air inductors lead to sizing in large volumes. Certain embodiments which, in order to reduce the bulk, use inductors comprising magnetic circuits are not satisfactory, however, because they are the cause of the significant magnetic losses which take place in the circuits when they work in the saturated parts of their hysteresis cycle. .

Le but de l'invention est de pallier les inconvénients précités.The object of the invention is to overcome the aforementioned drawbacks.

A cet effet, l'invention à pour objet une boîte d'accord d'antenne pour postes radio tactiques hautes fréquences comportant plusieurs bobines d'accords, caractérisée en ce que au moins une bobine comporte au moins un enroulement disposé à l'intérieur d'un pot en ferrite composé de deux parties séparées par un entrefer.To this end, the subject of the invention is an antenna tuning box for high frequency tactical radio sets comprising several chord coils, characterized in that at least one coil comprises at least one winding arranged inside of '' a ferrite pot composed of two parts separated by an air gap.

L'invention a pour principal avantage qu'elle permet une réduction effective du volume des boîtes d'antennes des postes émetteurs hautes fréquences portables dans un rapport très important.The main advantage of the invention is that it allows an effective reduction in the volume of the antenna boxes of portable high-frequency transmitter stations in a very large ratio.

D'autres caractéristiques et avantages de l'invention apparaîtront ci-après à l'aide de la description qui suit faite en regard des figures annexées qui représentent :

  • la figure 1 un mode de réalisation d'une boîte d'antennes selon l'invention ;
  • La figure 2 un mode de réalisation d'une bobine d'accord composant la boîte d'antennes de la figure 1.
  • La figure 3 une vue de dessus du mode de réalisation de la figure 1.
Other characteristics and advantages of the invention will appear below with the aid of the description which follows given with reference to the appended figures which represent:
  • Figure 1 an embodiment of an antenna box according to the invention;
  • Figure 2 an embodiment of a tuning coil composing the antenna box of Figure 1.
  • Figure 3 a top view of the embodiment of Figure 1.

La boîte d'antenne qui est représentée à la figure 1 comporte un ensemble de bobines d'accord référencées de 1₁, 1n montées entre deux plaques métalliques 1, 2. La boîte d'antenne comporte de façon connue des poids selfiques de décroissance variant suivant une progression géométrique de raison voisine de deux. Afin d'obtenir un accord sur des antennes usuelles de longueur 1,2 m à 2,40 m ou éventuellement plus longues, la valeur selfique maximum qui est réalisée est de 200 microhenrys, ce qui conduit à un poids selfique maximum de 100 microhenrys pour une première bobine, 50 microhenrys pour une deuxième et ainsi de suite jusqu'à 100 x 2-n microhenrys. En fait onze poids selfiques sont suffisants pour couvrir la gamme haute fréquence 1, 5 à 30 MHz des postes auxquels s'applique l'invention. Dans ces conditions la valeur de self induction maximale de chaque bobine peut être fixée à 25 microhenrys, le poids de 100 microheirys étant alors réalisé à l'aide de 4 bobines de 25 microhenrys montées en série, celui de 50 microhenrys étant réalisé avec deux bobines de 25 microhenrys etc... Afin d'obtenir un faible volume, chaque bobine comporte de la manière représentée sur la figure 2 au moins un enroulement 4 enfermé à l'intérieur d'un pot en ferrite 5 de modèle standard 18/11 par exemple, constitué en matériau type H32 commercialisé par la société LCC ou en matériaux équivalents tels K₁ ou 4C6 commercialisés respectivement par les sociétés SIEMENS et RTC qui possèdent des perméabilités de l'ordre de 200 et des inductances spécifiques de 40 ou 25 nanohenrys par spires. Cependant pour garder une linéarité acceptable sous des inductions quine dépassent pas la valeur de 100 Gauss, les deux parties du pot en ferrite 5a et 5b sont maintenues séparées entre elles par un entrefer 6 pour réduire la perméabilité effective et obtenir une inductance spécifique de 10 nanohenrys par spire environ. Cet entrefer est obtenu en intercalant des rondelles isolantes élastiques 7 entre les fonds des pots en ferrite 5 et la carcasse 8 sur laquelle sont enroulés les' spires de l'enroulement 4. De la sorte toutes les bobines de la boîte d'antennes qui comportent une valeur appréciable de self sont réalisées suivant un montage identique, seul le nombre de spires est adapté pour obtenir pour chaque bobine spécifique la self désirée. Dans ce montage les bobines peuvent être placées l'une contre l'autre en laissant juste le jeu fonctionnel nécessaire sans qu'il y ait risque d'obtenir un couplage appréciable entre les différentes selfs. Pour améliorer la dissipation du bobinage et sa rigidité la carcasse 8 peut être imprégnée et peut comporter un noyau central 9 massif en résine polymérisable du type de celle commercialisé sous la marque de fabrique "Scotchcast" commercialisé par la société 3M. Pour dissiper la chaleur les plaques 2 et 3 sont réalisées dans un matériau métallique bon conducteur de la chaleur, en aluminium par exemple, et pour des facilités de réalisation une plaque peut être formées éventuellement par une paroi du poste émetteur. Des vis de serrage 10 en matériau isolant, en nylon par exemple, sont prévues pour serrer les pots entre les plaques 2 et 3 ou en matériau conducteur disposé autour des pots ferrite suivant la figure 3. D'autre part, pour diminuer au maximum la capacité répartie de l'enroulement 4, la carcasse 8 peut être partagée en deux compartiments comme le montre la figure 2.The antenna box which is represented in FIG. 1 comprises a set of tuning coils referenced by 1₁, 1 n mounted between two metal plates 1, 2. The antenna box comprises in known manner varying inductive weights following a geometric progression of reason close to two. In order to obtain an agreement on usual antennas of length 1.2 m to 2.40 m or possibly longer, the maximum inductive value which is achieved is 200 microhenrys, which leads to a maximum inductive weight of 100 microhenrys for a first coil, 50 microhenrys for a second and so on up to 100 x 2 -n microhenrys. In fact eleven inductive weights are sufficient to cover the high frequency range 1.5 to 30 MHz of the stations to which the invention applies. Under these conditions, the maximum self-induction value of each coil can be fixed at 25 microhenrys, the weight of 100 microheirys then being produced using 4 coils of 25 microhenrys connected in series, that of 50 microhenrys being produced with two coils of 25 microhenrys etc ... In order to obtain a low volume, each coil comprises, as shown in FIG. 2, at least one winding 4 enclosed inside a ferrite pot 5 of standard model 18/11 by example, made of H32 type material sold by the company LCC or equivalent materials such as K₁ or 4C6 sold respectively by the companies SIEMENS and RTC which have permeabilities of the order of 200 and specific inductances of 40 or 25 nanohenrys per turns. However to keep an acceptable linearity under inductions which do not exceed the value of 100 Gauss, the two parts of the ferrite pot 5 a and 5 b are kept separated from each other by a gap 6 to reduce the effective permeability and obtain a specific inductance of around 10 nanohenrys per turn. This air gap is obtained by inserting elastic insulating washers 7 between the bottoms of the ferrite pots 5 and the carcass 8 on which are wound the 'turns of the winding 4. In this way all the coils of the antenna box which include an appreciable value of inductor are produced according to an identical assembly, only the number of turns is adapted to obtain for each specific coil the desired inductor. In this arrangement the coils can be placed one against the other, leaving just the necessary functional clearance without there being any risk of obtaining an appreciable coupling between the different inductors. To improve the dissipation of the winding and its rigidity, the carcass 8 can be impregnated and can comprise a central core 9 solid in polymerizable resin of the type sold under the trademark "Scotchcast" sold by the company 3M. To dissipate the heat, the plates 2 and 3 are made of a metallic material that is a good conductor of heat, aluminum for example, and for ease of production, a plate can optionally be formed by a wall of the transmitting station. Clamping screws 10 made of insulating material, for example nylon, are provided for clamping the pots between the plates 2 and 3 or of conductive material disposed around the ferrite pots according to FIG. 3. On the other hand, to minimize the distributed capacity of the winding 4, the carcass 8 can be divided into two compartments as shown in FIG. 2.

Avec les caractéristiques de pots précédentes la puissance que peut ainsi supporter la boîte d'antennes est de 50 watts PEP (où PEP est l'abréviation du terme anglo saxon "Peak envelop power) pour une linéarité de -36 dBC sur l'intermodulation de rang 3 et de 25 Watts moyen permanent. La perte d'insertion aux fréquences les plus défavorables est de l'ordre de 1,5 dB. A 25 Watts PEP l'intermodulation de rang 3 est de l'ordre de -45 dB PEP.With the characteristics of the preceding pots, the power which the antenna box can thus support is 50 watts PEP (where PEP is the abbreviation of the Anglo-Saxon term "Peak envelop power) for a linearity of -36 dBC on the intermodulation of rank 3 and 25 Watts permanent average. The insertion loss at the most unfavorable frequencies is around 1.5 dB. At 25 Watts PEP the intermodulation of rank 3 is around -45 dB PEP .

Claims (6)

Boîte d'accord d'antenne pour postes radiotactiques hautes fréquences comportant plusieurs bobines d'accords (1₁..1n), caractérisée en ce que au moins une bobine comporte au moins un enroulement (4) disposé à l'intérieur d'un pot en ferrite (5) composé de deux parties (5a, 5b) séparées par un entrefer (6).Antenna tuning box for high frequency radiotactic stations comprising several tuning coils (1₁..1 n ), characterized in that at least one coil has at least one winding (4) arranged inside a ferrite pot (5) composed of two parts (5a, 5b) separated by an air gap (6). Boîte d'accord d'antenne selon la revendication 1, caractérisée en ce que les deux parties (5a, 5b) sont séparées l'une de l'autre au moyen d'une rondelle isolante élastique (7) disposée au fond de chacune des parties (5a, 5b) du pot entre un enroulement (4) et le fond de la partie correspondante.Antenna tuning box according to claim 1, characterized in that the two parts (5 a , 5 b ) are separated from each other by means of an elastic insulating washer (7) arranged at the bottom of each of the parts (5 a , 5 b ) of the pot between a winding (4) and the bottom of the corresponding part. Boîte d'accord d'antenne selon la revendication 2, caractérisée en ce que chaque bobine comporte une carcasse (8) à au moins deux compartiments pour diminuer la capacité répartie sur les enroulements (4).Antenna tuning box according to claim 2, characterized in that each coil comprises a carcass (8) with at least two compartments to reduce the capacity distributed over the windings (4). Boîte d'accord d'antenne selon l'une quelconque des revendications 1 à 3, caractérisée en ce que les pots de ferrite (5) sont fixés entre deux plaques amagnétiques (2, 3) bonne conductrice de la chaleur.Antenna tuning box according to any one of claims 1 to 3, characterized in that the ferrite pots (5) are fixed between two non-magnetic plates (2, 3) good conductor of heat. Boîte d'accord d'antenne selon l'une quelconque des revendications 1 à 4, caractérisée en ce qu'au moins une des plaques est formée par la paroi du poste radio.Antenna tuning box according to any one of claims 1 to 4, characterized in that at least one of the plates is formed by the wall of the radio station. Boîte d'accord d'antenne selon l'une quelconque des revendications 1 à 5, caractérisée en ce que la carcasse des bobinages est imprégnée et comporte un noyau central (9) massif en résine polymérisable améliorant la dissipation du bobinage et sa rigidité.Antenna tuning box according to any one of claims 1 to 5, characterized in that the winding carcass is impregnated and comprises a central core (9) solid in polymerizable resin improving the dissipation of the winding and its rigidity.
EP91401376A 1990-06-08 1991-05-29 Antenna tuner unit for tactical HF apparatus Expired - Lifetime EP0461000B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9007173 1990-06-08
FR9007173A FR2663176B1 (en) 1990-06-08 1990-06-08 ANTENNA TUNING BOX FOR HIGH FREQUENCY TACTICAL RADIO STATIONS.

Publications (2)

Publication Number Publication Date
EP0461000A1 true EP0461000A1 (en) 1991-12-11
EP0461000B1 EP0461000B1 (en) 1994-12-14

Family

ID=9397432

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91401376A Expired - Lifetime EP0461000B1 (en) 1990-06-08 1991-05-29 Antenna tuner unit for tactical HF apparatus

Country Status (4)

Country Link
EP (1) EP0461000B1 (en)
DE (1) DE69105825T2 (en)
ES (1) ES2064939T3 (en)
FR (1) FR2663176B1 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB519755A (en) * 1938-10-01 1940-04-04 Murphy Radio Ltd Improvements in and relating to the prevention of interference in radio receivers
GB618694A (en) * 1946-10-18 1949-02-25 Standard Telephones Cables Ltd Improvements in or relating to adjustable electric inductance coils

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61206322A (en) * 1985-03-11 1986-09-12 Fujitsu Ltd Antenna impedance matching circuit

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB519755A (en) * 1938-10-01 1940-04-04 Murphy Radio Ltd Improvements in and relating to the prevention of interference in radio receivers
GB618694A (en) * 1946-10-18 1949-02-25 Standard Telephones Cables Ltd Improvements in or relating to adjustable electric inductance coils

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, vol. 11, no. 41 (E-478)[2488], 6 février 1987; & JP-A-61 206 322 (FUJITSU LTD) 12-09-1986 *

Also Published As

Publication number Publication date
ES2064939T3 (en) 1995-02-01
EP0461000B1 (en) 1994-12-14
DE69105825T2 (en) 1995-04-27
FR2663176A1 (en) 1991-12-13
FR2663176B1 (en) 1994-06-03
DE69105825D1 (en) 1995-01-26

Similar Documents

Publication Publication Date Title
US6956535B2 (en) Coaxial inductor and dipole EH antenna
US8125208B2 (en) Transformer device utilizing an air gap for non-contact energy transmission from the primary side to the secondary side
US5258765A (en) Rod-shaped multi-band antenna
AU649866B2 (en) Miniature antenna
US5539418A (en) Broad band mobile telephone antenna
US5300940A (en) Broadband antenna
US8860618B2 (en) Internal FM antenna
US4641115A (en) Radio frequency chokes having two windings and means for dampening parasitic resonances
EP0578288A2 (en) Electrical motor
JPS6019102B2 (en) high frequency equipment
US3750181A (en) Ground independent antenna
US4379298A (en) Tunable citizen band antenna
US5600335A (en) High-power broadband antenna
EP0461000B1 (en) Antenna tuner unit for tactical HF apparatus
US2920323A (en) Broad-band impedance matching
US2629860A (en) Inductance tuning unit
US4404564A (en) Attachment for antennas to improve reception and transmission
EP1615292A1 (en) AM antenna noise reduction
EP0443173B1 (en) Wideband tunable monolithic inductor
KR102483815B1 (en) Hybrid Inductor and EMI Filter Using the Same
US1904199A (en) Inductance
US2103646A (en) Receiving aerial for ultrashort waves
EP1435125A1 (en) Helical antenna
US4321603A (en) Attachment for antennas to improve reception and transmission
JPH0233374Y2 (en)

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

Kind code of ref document: A1

Designated state(s): BE DE ES GB IT

17P Request for examination filed

Effective date: 19920526

17Q First examination report despatched

Effective date: 19931124

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: THOMSON-CSF

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): BE DE ES GB IT

ITF It: translation for a ep patent filed

Owner name: JACOBACCI CASETTA & PERANI S.P.A.

REF Corresponds to:

Ref document number: 69105825

Country of ref document: DE

Date of ref document: 19950126

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2064939

Country of ref document: ES

Kind code of ref document: T3

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19950130

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: GB

Payment date: 19960419

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: 19960425

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: 19960510

Year of fee payment: 6

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

Ref country code: ES

Payment date: 19960528

Year of fee payment: 6

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

Ref country code: GB

Effective date: 19970529

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

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19970530

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

Ref country code: BE

Effective date: 19970531

BERE Be: lapsed

Owner name: THOMSON-CSF

Effective date: 19970531

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19970529

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: 19980203

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 19990405

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 NON-PAYMENT OF DUE FEES

Effective date: 20050529