FR2390027A1 - Attenuation of slotted waveguide aerial parasitic side lobes - is achieved by plate filter installed in plane of emission - Google Patents

Attenuation of slotted waveguide aerial parasitic side lobes - is achieved by plate filter installed in plane of emission

Info

Publication number
FR2390027A1
FR2390027A1 FR7713737A FR7713737A FR2390027A1 FR 2390027 A1 FR2390027 A1 FR 2390027A1 FR 7713737 A FR7713737 A FR 7713737A FR 7713737 A FR7713737 A FR 7713737A FR 2390027 A1 FR2390027 A1 FR 2390027A1
Authority
FR
France
Prior art keywords
attenuation
plane
side lobes
emission
lambda
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
FR7713737A
Other languages
French (fr)
Other versions
FR2390027B1 (en
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
Priority to FR7713737A priority Critical patent/FR2390027A1/en
Publication of FR2390027A1 publication Critical patent/FR2390027A1/en
Application granted granted Critical
Publication of FR2390027B1 publication Critical patent/FR2390027B1/fr
Granted legal-status Critical Current

Links

Classifications

    • 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
    • H01Q13/02—Waveguide horns
    • H01Q13/0233—Horns fed by a slotted waveguide array
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q17/00—Devices for absorbing waves radiated from an antenna; Combinations of such devices with active antenna elements or systems
    • H01Q17/001—Devices for absorbing waves radiated from an antenna; Combinations of such devices with active antenna elements or systems for modifying the directional characteristic of an aerial

Abstract

An attenuator is used to get rid of parasitic side lobes caused by interference in the output of slotted waveguides. The slots are alternated about the lengthways axis of symmetry of the guide. Attenuation is achieved by the use of a resistive filter (24) supported by end struts (25) from the slotted face of the waveguide. The plane of the filter is parallel to that of the short guide wall (21) and is positioned at least lambda o/4 away from the slotted face along the axis of symmetry (x-x'), where lambda o is the aerial operating wavelength. The filter plate having a depth of lambda o/2 may be laminated, the resistive component being a ferrite or some material having similar dielectric and resistive properties.
FR7713737A 1977-05-05 1977-05-05 Attenuation of slotted waveguide aerial parasitic side lobes - is achieved by plate filter installed in plane of emission Granted FR2390027A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7713737A FR2390027A1 (en) 1977-05-05 1977-05-05 Attenuation of slotted waveguide aerial parasitic side lobes - is achieved by plate filter installed in plane of emission

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7713737A FR2390027A1 (en) 1977-05-05 1977-05-05 Attenuation of slotted waveguide aerial parasitic side lobes - is achieved by plate filter installed in plane of emission

Publications (2)

Publication Number Publication Date
FR2390027A1 true FR2390027A1 (en) 1978-12-01
FR2390027B1 FR2390027B1 (en) 1981-04-10

Family

ID=9190408

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7713737A Granted FR2390027A1 (en) 1977-05-05 1977-05-05 Attenuation of slotted waveguide aerial parasitic side lobes - is achieved by plate filter installed in plane of emission

Country Status (1)

Country Link
FR (1) FR2390027A1 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0186455A2 (en) * 1984-12-20 1986-07-02 The Marconi Company Limited A dipole array
EP0190569A2 (en) * 1985-02-06 1986-08-13 ELTRO GmbH Gesellschaft für Strahlungstechnik Broad-band directional-antenna arrangement
EP0448533A1 (en) * 1990-03-19 1991-09-25 Telefonaktiebolaget L M Ericsson A waveguide antenna having a plurality of broad-side slots provided with a spatial filter
EP0531979A1 (en) * 1991-09-13 1993-03-17 Nippondenso Co., Ltd. Mobile object discriminating system
EP0642192A1 (en) * 1993-09-06 1995-03-08 Telefonaktiebolaget Lm Ericsson Array antenna
US5541612A (en) * 1991-11-29 1996-07-30 Telefonaktiebolaget Lm Ericsson Waveguide antenna which includes a slotted hollow waveguide
EP0730319A1 (en) * 1995-03-03 1996-09-04 Ace Antenna Corporation An antenna system having a choke reflector for minimizing sideward radiation

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0186455A2 (en) * 1984-12-20 1986-07-02 The Marconi Company Limited A dipole array
EP0186455A3 (en) * 1984-12-20 1987-11-25 The Marconi Company Limited A dipole array
EP0190569A2 (en) * 1985-02-06 1986-08-13 ELTRO GmbH Gesellschaft für Strahlungstechnik Broad-band directional-antenna arrangement
EP0190569A3 (en) * 1985-02-06 1987-10-28 Eltro Gmbh Gesellschaft Fur Strahlungstechnik Broad-band directional-antenna arrangement
EP0448533A1 (en) * 1990-03-19 1991-09-25 Telefonaktiebolaget L M Ericsson A waveguide antenna having a plurality of broad-side slots provided with a spatial filter
US5172127A (en) * 1990-03-19 1992-12-15 Telefonaktiebolaget L M Ericsson Waveguide antenna having a plurality of broad-side slots provided with a spatial filter
EP0531979A1 (en) * 1991-09-13 1993-03-17 Nippondenso Co., Ltd. Mobile object discriminating system
US5337066A (en) * 1991-09-13 1994-08-09 Nippondenso Co., Ltd. Antenna system with a limitable communication area
US5541612A (en) * 1991-11-29 1996-07-30 Telefonaktiebolaget Lm Ericsson Waveguide antenna which includes a slotted hollow waveguide
EP0642192A1 (en) * 1993-09-06 1995-03-08 Telefonaktiebolaget Lm Ericsson Array antenna
US5714962A (en) * 1993-09-06 1998-02-03 Telefonaktiebolaget Lm Ericsson Array antenna
EP0730319A1 (en) * 1995-03-03 1996-09-04 Ace Antenna Corporation An antenna system having a choke reflector for minimizing sideward radiation

Also Published As

Publication number Publication date
FR2390027B1 (en) 1981-04-10

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