EP0003463B1 - Antenne hyperfréquence montée sur un mât télescopique - Google Patents

Antenne hyperfréquence montée sur un mât télescopique Download PDF

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Publication number
EP0003463B1
EP0003463B1 EP79400054A EP79400054A EP0003463B1 EP 0003463 B1 EP0003463 B1 EP 0003463B1 EP 79400054 A EP79400054 A EP 79400054A EP 79400054 A EP79400054 A EP 79400054A EP 0003463 B1 EP0003463 B1 EP 0003463B1
Authority
EP
European Patent Office
Prior art keywords
antenna
section
mast
guide
junction
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.)
Expired
Application number
EP79400054A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0003463A1 (fr
Inventor
Jacques Martel
Roger Famin
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 EP0003463A1 publication Critical patent/EP0003463A1/fr
Application granted granted Critical
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P1/00—Auxiliary devices
    • H01P1/06—Movable joints, e.g. rotating joints
    • H01P1/061—Movable joints, e.g. rotating joints the relative movement being a translation along an axis common to at least two rectilinear parts, e.g. expansion joints

Definitions

  • the present invention relates to a microwave antenna mounted on a telescopic mast, usable more particularly on board a submarine.
  • the radar transceiver being located at the command post is connected to the microwave line, when the antenna is in the high position, by a device known as beak of a duck.
  • This connection is interrupted when the antenna is at the bottom.
  • the connection itself is carried out by pressure plating of two flanges, with traps, and a flange being integral with the microwave line, the other flange being integral with the transmitter-receiver unit of the radar.
  • US Patent No. 3,495,261 describes a telescopic antenna for a submarine constituted by a telescopic mast, the lower part of which is fixed and the upper part supporting the antenna slides in the first.
  • a rotating joint is provided at the top of the upper part of the mast.
  • the transmission of microwave energy takes place in free space between two horns located one in the lower part of the mast and the other in the upper part.
  • it is necessary that the directivity of the horns is high to prevent the transmitted energy reaching the walls of the tube and causing the appearance of parasitic modes.
  • a microwave antenna mounted on a telescopic mast comprising a first section of waveguide connected through a rotating joint to the antenna reflector located at the top of a first first mast, a second section, of waveguide connected to a microwave source placed at the base of a second mast in which the first section slides, the two sections comprising at their opposite ends a sliding junction proper, constituted by a third section of waveguide and a fourth waveguide section which can slide one inside the other, one of the sections comprising traps and a crown of absorbent material placed between the traps and the end of said section adjacent to the second waveguide section , said sliding junction ensuring the transfer of microwave energy between the source and the antenna and vice versa, said mast being able to assume a first retracted position for which the antenna is in position.
  • the two guide sections placed in the sliding parts of the mast are of longitudinal axis parallel to the axis of the mast, offset relative to each other allowing their displacement relative to each other when the antenna passes from its low position to its high position and vice versa, the ends of the two sections constituting the sliding junction itself being mounted at the ends of at least one bend making their axes aligned and ensuring that, when the antenna is in the high position, their fitting and the transmission of microwave energy.
  • each guide constituting a part of the microwave power supply line, transmitter-receiver of the antenna radar, one of the guides is integrated into the mobile part of the periscopic mast supporting the antenna, the other guide is integrated into the fixed part of the periscope mast and fixed to the transmitter-receiver unit of the radar, and these two guides are connected via a telescopic junction.
  • connection we want to make a connection between two microwave waveguides movable relative to each other, without it being stable mechanical contact which should be perfect, between them, mechanical contact difficult to achieve .
  • the connection is made by a telescopic or sliding junction.
  • Figure 1 gives an example of a telescopic junction for connecting two mobile waveguides relative to each other.
  • the telescopic junction comprises two sections of waveguide 1 and 2, one of the sections 1 being such that it can penetrate and therefore slide into the other section 2.
  • the guide section 1 is connected to a guide d wave 3 which in the particular example cited, is part of a microwave power supply line.
  • the guide section 2 is connected to another waveguide 4 which constitutes the other part of a microwave supply line. It will be noted in the case of the sliding connection of FIG. 1 that the junction is in a waveguide with a circular section and that the waveguides to which this junction is connected are of rectangular section.
  • the connection of the guides with circular section and those with rectangular section uses what are called transitions circular guide rectangular guide in Tee of a type described for example in French patent 1 277 376.
  • the end 6 of the section of guide 1 of the telescopic junction which enters the guide section 2 is machined so as to present microwave traps 5 which prevent energy losses outside.
  • the diameters of the guide sections 1 and 2 are also determined to allow perfect transmission of energy.
  • the action of the traps is improved by the presence of a crown of absorbent material 50 placed between the trap and the outside.
  • the other end 7 of the male guide section 1 comprises a load 8, the profile of which is in the form of a staircase 11 intended to absorb the energy propagating with parasitic polarization brought by possible misalignments of the two transitions; there is also a similar load 9 with stair steps 12 at the end 10 of the female guide section 2, and short-circuit plates 13, 14 located longitudinally and intended to transmit the energy of the circular guides 1 and 2 to rectangular guides 3 and 4.
  • the connector as shown in FIG. 1 is inserted. ; a set that makes it functional.
  • the two parts of the microwave line that is to say the guides 3 and 4, which are movable with respect to each other, are each integrated into a tube, in this case the periscopic tube in the case of a submarine, and this tube has two parts sliding one inside the other.
  • the guides 3 and 4 are connected to the sections 1 and 2 by elbows which make them parallel to the longitudinal axis of the junction and of the tube ( Figure 1).
  • the guide 4 for example is made integral with the inner tube 15 by a support 16, while the guide 3 is made integral with the outer tube 17 by means of a support 18.
  • the inner tube slides in the outer tube, and in its movement it drives the waveguide which in turn drives the guide section 2 of the junction.
  • the sliding junction ensures the transmission of microwave energy from one guide to another.
  • FIG. 2 shows a telescopic or sliding junction according to the invention, in which there is only one transition from circular guide to rectangular guide.
  • the two guide sections 1 and 2 constituting the actual junction.
  • the end 6 of the guide section 1 is machined so as to present traps 5 which prevent energy losses towards the outside, and whose action is reinforced by a ring of absorbent material 50 fixed to the guide section 1
  • the other end 7 of the guide section 1 comprises a load 8, in staircase operation 11 and a short-circuit plate 13 on the side where there exists the transition circular guide, rectangular guide, this rectangular guide being the guide food 3.
  • the guide. rectangular power supply 4 is located in the extension of the sliding junction and the passage of the guide section 2 to the guide 4 is done by means of either a quarter-wave matching transformer, profile in staircase steps or a gradual transition between guide 2 and guide 4; the typed profile is not shown in the drawing.
  • FIG. 3 represents another variant of a telescopic junction according to the invention, but in an embodiment using only waveguides of rectangular section.
  • the guide section 1 whose end 6 is machined to reveal microwave traps 5 whose action is reinforced by the absorbent material crown 50 arranged around the guide section.
  • This guide section 1 can slide inside the second guide section 2 of the sliding junction in which is arranged a quarter-wave matching transformer 51 or a tapered transition.
  • the supply guides 3 and 4 are arranged in the respective extension of the sections 1 and 2 to which they are connected by flanges.
  • FIG. 4 represents another variant of a telescopic junction according to the invention, but in an embodiment using only waveguides of circular section.
  • the guide section 1 has one end 6 in which traps 5 are formed, the action of which is reinforced by the ring of absorbent material 50, the end which penetrates and slides in the guide section 2 comprising a transformer for adapting quarter wave or a typed transition.
  • the microwave power waveguides 3 and 4 are respectively fixed by flanges at the ends of the guide sections 1 and 2 of the sliding junction.
  • Figures 5 and 6 show a particular application of the telescopic seal according to the invention, to the production of a telescopic antenna, more particularly a submarine antenna.
  • Figure 5 relates to the antenna in its lower position
  • Figure 6 relates to the antenna in its upper position
  • FIG. 5 representing the antenna of a submarine in the low position, antenna using the telescopic seal according to the invention
  • the hull of the submarine has been identified by 21, by 22 the kiosk and by 23 the antenna proper, capable of turning, with a rotating joint 24 provided at the upper end of the waveguide 4.
  • the guide section 1 of the sliding junction with the waveguide 3 which is associated with it is fixed, rendered secured to the outer tube 17 of the periscope by means not shown in the figure for the sake of clarity.
  • the guide section 2 of the sliding junction with the wave guide 4 to which it is connected is movable, made integral, by means not shown, with the movable inner tube 15 of the periscope.
  • the lower end 25 of the fixed guide 3 is connected to a fixed transceiver 26.
  • FIG. 6 shows the antenna in its high position, that is to say in the position which it must occupy in order to function.
  • the inner tube 15 of the periscope is raised, causing in its vertical translational movement the guide section 2 of the sliding junction with the feed guide 4.
  • the guide section 2 came to be placed around section of guide 1 performing the junction as shown for example in Figure 1.
  • the assembly can operate, the energy being transmitted from guide 3 to guide 4 or vice versa via the junction sliding.

Landscapes

  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Details Of Aerials (AREA)
  • Radar Systems Or Details Thereof (AREA)
EP79400054A 1978-01-27 1979-01-26 Antenne hyperfréquence montée sur un mât télescopique Expired EP0003463B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7802337 1978-01-27
FR7802337A FR2415885A1 (fr) 1978-01-27 1978-01-27 Jonction pour guides d'ondes hyperfrequences, en particulier pour guides mobiles l'un par rapport a l'autre, et son application a la realisation d'une antenne telescopique

Publications (2)

Publication Number Publication Date
EP0003463A1 EP0003463A1 (fr) 1979-08-08
EP0003463B1 true EP0003463B1 (fr) 1982-02-17

Family

ID=9203904

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79400054A Expired EP0003463B1 (fr) 1978-01-27 1979-01-26 Antenne hyperfréquence montée sur un mât télescopique

Country Status (4)

Country Link
US (1) US4283727A (enrdf_load_stackoverflow)
EP (1) EP0003463B1 (enrdf_load_stackoverflow)
DE (1) DE2962111D1 (enrdf_load_stackoverflow)
FR (1) FR2415885A1 (enrdf_load_stackoverflow)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2454175A1 (fr) * 1979-04-13 1980-11-07 Thomson Csf Amplificateur a champs croises a faisceau re-entrant
US4369413A (en) * 1981-02-03 1983-01-18 The United States Of America As Represented By The Secretary Of The Navy Integrated dual taper waveguide expansion joint
GB8323143D0 (en) * 1983-08-27 1983-09-28 Oxley R F Tuning screw
DE3614539A1 (de) * 1986-04-29 1987-11-05 Gabler Gmbh Maschbau Antennenanlage fuer insbesondere u-boote
EP0345482A1 (de) * 1988-06-08 1989-12-13 Asea Brown Boveri Ag Koaxialer Antennenwähler
FR2676598B1 (fr) * 1991-05-14 1993-07-23 Thomson Csf Liaison hyperfrequence mobile a guide d'ondes.
FR2748448B1 (fr) * 1996-05-09 1998-06-12 France Etat Dispositif mecanique de hissage et d'affalage d'un mat rotatif
FR2912558B1 (fr) * 2007-02-14 2009-05-15 Airbus France Sa Antenne adaptable pour essais de compatibilite electromagnetique.
FR2967304B1 (fr) * 2010-11-08 2012-12-28 Alstom Transport Sa Dispositif de communication radioelectrique comportant un guide
JP6220705B2 (ja) * 2014-03-14 2017-10-25 アンリツ株式会社 ミリ波帯フィルタ
JP6315451B2 (ja) * 2014-04-07 2018-04-25 アンリツ株式会社 ミリ波帯フィルタ
FR3086104B1 (fr) * 2018-09-13 2021-12-10 Thales Sa Ensemble de guidage d'ondes radioelectriques et antenne comprenant un tel ensemble

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR958781A (enrdf_load_stackoverflow) * 1950-03-17
GB612405A (en) * 1942-05-27 1948-11-12 Sperry Gyroscope Co Inc Improvements in or relating to apparatus for controlling the passage of high frequency energy across a joint between two conductors
US2451876A (en) * 1943-06-05 1948-10-19 Winfield W Salisbury Radio-frequency joint
US2632806A (en) * 1945-09-18 1953-03-24 William M Preston Mode filter
US2564007A (en) * 1947-11-14 1951-08-14 Bell Telephone Labor Inc Coupling for wave guides
GB741543A (en) * 1951-05-10 1955-12-07 Cossor Ltd A C Improvements in and relating to coupling links for wave guides
DE2046525A1 (de) * 1970-09-22 1972-03-23 Kabel Metallwerke Ghh Verfahren zur Herstellung eines Übergangs zur Verbindung zweier Hohlleiter unterschiedlicher Querschnittsform

Also Published As

Publication number Publication date
FR2415885B1 (enrdf_load_stackoverflow) 1981-06-12
EP0003463A1 (fr) 1979-08-08
US4283727A (en) 1981-08-11
DE2962111D1 (en) 1982-03-25
FR2415885A1 (fr) 1979-08-24

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