EP0439970A1 - Geschlitzter Hohlleiterstrahler mit quer verlaufenden Schlitzen, die von gedruckten, leitenden Mustern erregt werden - Google Patents

Geschlitzter Hohlleiterstrahler mit quer verlaufenden Schlitzen, die von gedruckten, leitenden Mustern erregt werden Download PDF

Info

Publication number: EP0439970A1
Authority: EP; European Patent Office
Prior art keywords: guide; slots; pattern; slot; radiating
Prior art date: 1989-11-14
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

EP90403194A

Other languages

English (en)

French (fr)

Other versions

EP0439970B1 (de

Inventor

Daniel Caer

Jean Le Foll

Joseph Roger

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.)

1989-11-14

Filing date

1990-11-09

Publication date

1991-08-07

1990-11-09 Application filed by Thomson CSF SA filed Critical Thomson CSF SA

1991-08-07 Publication of EP0439970A1 publication Critical patent/EP0439970A1/de

1994-12-28 Application granted granted Critical

1994-12-28 Publication of EP0439970B1 publication Critical patent/EP0439970B1/de

2010-11-09 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/0006—Particular feeding systems
- H01Q21/0037—Particular feeding systems linear waveguide fed arrays
- H01Q21/0043—Slotted waveguides
- 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

Definitions

the present invention relates to a guide with non-inclined radiating slots excited by radiating pattern of the type comprising slots perpendicular to the axis of the guide, cut out on a short side of the guide with a spacing substantially equal to half a length of operating wave in the guide.
Slotted guides are frequently used as linear arrays of radiating sources in array antennas, for example in radar. Their advantages are low cost and low losses. To obtain a radiation close to normal to the guide and a good adaptation, it is necessary on the one hand a distance between successive slits close to ⁇ g / 2, where ⁇ g is the wavelength in the guide, and on the other hand a additional phase shift of ⁇ between two consecutive slots.
slots arranged on the long side of a rectangular section guide or on the short side have several drawbacks and in particular a large pitch between successive guides, which limits the scanning angle of the beam in a plane perpendicular to the guides. We therefore prefer to use slots on the short side of the guides.
a first solution therefore consists in tilting the slots alternately on one side and on the other to obtain the necessary conditions specified above.
this solution to the drawback due to the inclination of the slits, of radiating a cross-polarized component which can reach levels incompatible with proper operation of the antenna using these guides.
Another known solution then consists in using non-inclined slots (perpendicular to the axis of the guide) and in exciting them by means of an obstacle placed in the guide (iris, rods).
US patent US 4,435,715 (Hughes Aircraft) describes a guide with non-inclined slits in which the excitation of a slit is obtained by placing conductive rods on either side of the slit. Each rod is arranged between an edge of the slot and one of the long sides of the guide.
a solution has the drawback of being costly to produce. Indeed, it is necessary to individually fix the rods inside the guide, for example by welding in a bath.
the subject of the invention is a guide with slits which remedies these drawbacks by using flat radiating conductive patterns (called “patches” in the English literature) to excite each slit.
a guide with non-inclined radiating slots excited by radiating pattern of the type comprising slots perpendicular to the axis of the guide cut out on a small side of the guide with a spacing substantially equal to half a length d operating wave in the guide, characterized in that each slot is excited by means of a radiating pattern arranged in the guide near the slot, parallel to said short side, and serving as an antenna for coupling with the energy propagating in the guide, said pattern transmitting the energy captured to said associated slot via a transmission line connected to said pattern.
Figures 1 and 2 show a waveguide 1 comprising, cut on the short side, radiating slots 2, 3 not inclined, that is to say perpendicular to the axis of the guide. As already mentioned, such slots are normally not coupled to the energy propagating in the guide 1 and therefore do not radiate.
the radiating patterns 5, 7 serve as a coupling antenna with the electromagnetic energy propagating in the guide 1; the energy taken up by a pattern 5, 7 feeds the line 6, 8 which is connected to it and the latter comes to excite the associated slot 2, 3 which then radiates the energy which is thus transmitted to it.
the radiating patterns 5, 7 and the lines 6, 8 are produced according to the technique of printed circuits on the face of the wafer 4 which is not in contact with the short side carrying the slots.
This short side serves as a ground plane for the radiating patterns 5, 7 and for the microstrip lines 6, 8.
the plate 4 is fixed against the short side for example by gluing.
the radiating patterns are not placed in front of the slots so as not to disturb the behavior of the latter and the radiation they provide.
the microstrip lines 6, 8 sse extend by a length substantially equal to ⁇ g / 4 beyond the associated slot, which substantially reduces a short circuit at the level of the slot.
the slots are spaced approximately ⁇ g / 2 apart and it is necessary to provide an additional phase shift of ⁇ between two consecutive slots.
This phase shift is obtained by taking the energy alternately from one side and the other of the corresponding pattern and, consequently, by exciting the slots 2, 3 alternately at one end 2 ′ and at the other 3 ⁇ ( Figure 2 ).
the slot following the slot 3 would thus be excited at its end situated on the side of the end 2 ′.
the value of the coupling of the radiating pattern with the wave propagated in the guide can be adjusted by the diameter of the pattern (or its dimensions in the case of shapes other than circular).
Another way of adjusting the coupling coefficient of the slit is to modify the position of the connection point of the microstrip line on the pattern. Indeed, the coupling is theoretically zero for a point located in the median plane of the guide and increases to a maximum when the connection point moves away towards the points located in the median plane of the pattern parallel to the slots, this is that is to say moves away towards the long sides of the guide.
FIG. 3 represents a variant in which the holding in position of the plate 4 is obtained by giving the latter a width slightly greater than the internal width of the short side carrying the slots.
two grooves 40, 41 are provided in the long sides of the guide 1, adjacent to the short side carrying the slots. The plate 4 is then slid into the grooves 40, 41 where it is thus held in position. Any fixing and any stop allows correct centering of the pattern-line microstrip assemblies on the associated slots.
Figure 4 similar to Figure 2, shows another alternative embodiment in which the microstrip line 6 ′, 8 ′ is electrically connected to a longitudinal edge of the slot 2, 3. This can be achieved for example via a metallized hole 6 monll, 8 ⁇ through the dielectric plate. In this case, the microstrip line does not need to extend beyond the metallized hole.

Landscapes

Waveguide Aerials (AREA)
Variable-Direction Aerials And Aerial Arrays (AREA)

EP90403194A 1989-11-14 1990-11-09 Geschlitzter Hohlleiterstrahler mit quer verlaufenden Schlitzen, die von gedruckten, leitenden Mustern erregt werden Expired - Lifetime EP0439970B1 (de)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
FR8914896A FR2654555B1 (fr)	1989-11-14	1989-11-14	Guide a fentes rayonnantes non inclinees a excitation par motif rayonnant.
FR8914896		1989-11-14

Publications (2)

Publication Number	Publication Date
EP0439970A1 true EP0439970A1 (de)	1991-08-07
EP0439970B1 EP0439970B1 (de)	1994-12-28

Family

ID=9387366

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP90403194A Expired - Lifetime EP0439970B1 (de)	1989-11-14	1990-11-09	Geschlitzter Hohlleiterstrahler mit quer verlaufenden Schlitzen, die von gedruckten, leitenden Mustern erregt werden

Country Status (6)

Country	Link
US (1)	US5170174A (de)
EP (1)	EP0439970B1 (de)
JP (1)	JPH03173205A (de)
CA (1)	CA2029329A1 (de)
DE (1)	DE69015608T2 (de)
FR (1)	FR2654555B1 (de)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FR2685820B1 (fr) *	1991-12-31	1994-03-18	Thomson Csf	Guide a fentes rayonnantes non inclinees excitees par des volets metalliques.
FR2697949B1 (fr) *	1992-11-06	1995-01-06	Thomson Csf	Antenne pour radar notamment de désignation et de trajectographie.
FR2725075B1 (fr) *	1994-09-23	1996-11-15	Thomson Csf	Procede et dispositif d'elargissement du diagramme de rayonnement d'une antenne active
US5870061A (en) *	1996-05-30	1999-02-09	Howell Laboratories, Inc.	Coaxial slot feed system
US7436361B1 (en) *	2006-09-26	2008-10-14	Rockwell Collins, Inc.	Low-loss dual polarized antenna for satcom and polarimetric weather radar
US7498896B2 (en) *	2007-04-27	2009-03-03	Delphi Technologies, Inc.	Waveguide to microstrip line coupling apparatus
WO2010068954A1 (en) *	2008-12-12	2010-06-17	Wavebender, Inc.	Integrated waveguide cavity antenna and reflector dish
DE102013012315B4 (de) *	2013-07-25	2018-05-24	Airbus Defence and Space GmbH	Hohlleiter-Strahler. Gruppenantennen-Strahler und Synthetik-Apertur-Radar-System
WO2019211908A1 (ja)	2018-05-02	2019-11-07	三菱電機株式会社	導波管スロットアレーアンテナ
WO2023117427A1 (en)	2021-12-23	2023-06-29	Huber+Suhner Ag	Antenna device

Citations (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2574433A (en) *	1943-10-01	1951-11-06	Roger E Clapp	System for directional interchange of energy between wave guides and free space
US3176300A (en) *	1964-01-24	1965-03-30	Avco Corp	Adjustable slotted wave guide radiator with coupling element
US3806945A (en) *	1973-06-04	1974-04-23	Us Navy	Stripline antenna
US4303923A (en) *	1979-08-09	1981-12-01	Motorola Inc.	Probe loop feed for transverse edge waveguide slot radiator
EP0048817A1 (de) *	1980-09-29	1982-04-07	Hughes Aircraft Company	Staberregte Hohlleiterschlitzantenne

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3827054A (en) *	1973-07-24	1974-07-30	Us Air Force	Reentry vehicle stripline slot antenna
US4360813A (en) *	1980-03-19	1982-11-23	The Boeing Company	Power combining antenna structure

1989
- 1989-11-14 FR FR8914896A patent/FR2654555B1/fr not_active Expired - Lifetime
1990
- 1990-10-25 US US07/603,455 patent/US5170174A/en not_active Expired - Fee Related
- 1990-11-05 CA CA002029329A patent/CA2029329A1/fr not_active Abandoned
- 1990-11-07 JP JP2302294A patent/JPH03173205A/ja active Pending
- 1990-11-09 EP EP90403194A patent/EP0439970B1/de not_active Expired - Lifetime
- 1990-11-09 DE DE69015608T patent/DE69015608T2/de not_active Expired - Fee Related

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2574433A (en) *	1943-10-01	1951-11-06	Roger E Clapp	System for directional interchange of energy between wave guides and free space
US3176300A (en) *	1964-01-24	1965-03-30	Avco Corp	Adjustable slotted wave guide radiator with coupling element
US3806945A (en) *	1973-06-04	1974-04-23	Us Navy	Stripline antenna
US4303923A (en) *	1979-08-09	1981-12-01	Motorola Inc.	Probe loop feed for transverse edge waveguide slot radiator
EP0048817A1 (de) *	1980-09-29	1982-04-07	Hughes Aircraft Company	Staberregte Hohlleiterschlitzantenne

Also Published As

Publication number	Publication date
FR2654555A1 (fr)	1991-05-17
DE69015608D1 (de)	1995-02-09
CA2029329A1 (fr)	1991-05-15
DE69015608T2 (de)	1995-05-11
EP0439970B1 (de)	1994-12-28
JPH03173205A (ja)	1991-07-26
FR2654555B1 (fr)	1992-06-19
US5170174A (en)	1992-12-08

Legal Events

Date	Code	Title	Description
1991-06-21	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
1991-08-07	AK	Designated contracting states	Kind code of ref document: A1 Designated state(s): DE DK ES GB IT SE
1992-03-25	17P	Request for examination filed	Effective date: 19920125
1993-12-29	17Q	First examination report despatched	Effective date: 19931112
1994-02-16	RAP1	Party data changed (applicant data changed or rights of an application transferred)	Owner name: THOMSON-CSF
1994-11-11	GRAA	(expected) grant	Free format text: ORIGINAL CODE: 0009210
1994-12-28	AK	Designated contracting states	Kind code of ref document: B1 Designated state(s): DE DK ES GB IT SE
1994-12-28	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: ES Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY Effective date: 19941228 Ref country code: DK Effective date: 19941228
1995-01-11	ITF	It: translation for a ep patent filed	Owner name: JACOBACCI CASETTA & PERANI S.P.A.
1995-01-31	EAL	Se: european patent in force in sweden	Ref document number: 90403194.5
1995-02-09	REF	Corresponds to:	Ref document number: 69015608 Country of ref document: DE Date of ref document: 19950209
1995-04-05	GBT	Gb: translation of ep patent filed (gb section 77(6)(a)/1977)	Effective date: 19950303
1995-11-01	PLBE	No opposition filed within time limit	Free format text: ORIGINAL CODE: 0009261
1995-11-01	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT
1995-11-09	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: GB Effective date: 19951109
1995-11-10	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: SE Effective date: 19951110
1995-12-20	26N	No opposition filed
1996-07-03	GBPC	Gb: european patent ceased through non-payment of renewal fee	Effective date: 19951109
1996-08-01	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: DE Effective date: 19960801
1996-08-05	EUG	Se: european patent has lapsed	Ref document number: 90403194.5
2005-11-09	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;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: 20051109

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