EP0097932A1 - Antenne à micro-ondes à faisceau dirigé - Google Patents

Antenne à micro-ondes à faisceau dirigé Download PDF

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Publication number
EP0097932A1
EP0097932A1 EP83106196A EP83106196A EP0097932A1 EP 0097932 A1 EP0097932 A1 EP 0097932A1 EP 83106196 A EP83106196 A EP 83106196A EP 83106196 A EP83106196 A EP 83106196A EP 0097932 A1 EP0097932 A1 EP 0097932A1
Authority
EP
European Patent Office
Prior art keywords
reflector
primary radiator
radiator system
aperture
boundary walls
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
EP83106196A
Other languages
German (de)
English (en)
Other versions
EP0097932B1 (fr
Inventor
Anton Dipl.-Ing. Brunner
Erwin Dr.Rer.Nat. Gillitzer
Uwe Dipl.-Ing. Leupelt
Wolfgang Dipl.-Ing. Löw
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.)
Siemens AG
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
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 Siemens AG, Siemens Corp filed Critical Siemens AG
Priority to AT83106196T priority Critical patent/ATE29803T1/de
Publication of EP0097932A1 publication Critical patent/EP0097932A1/fr
Application granted granted Critical
Publication of EP0097932B1 publication Critical patent/EP0097932B1/fr
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
    • H01Q19/10—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
    • H01Q19/12—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces wherein the surfaces are concave
    • H01Q19/13—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces wherein the surfaces are concave the primary radiating source being a single radiating element, e.g. a dipole, a slot, a waveguide termination
    • H01Q19/132—Horn reflector antennas; Off-set feeding

Definitions

  • the invention relates to a microwave directional antenna in a shell construction with a reflector designed as an eccentric rotational paraboloid cutout, which is fed according to the offset principle from a primary radiator system and is delimited laterally and at the bottom by the metallic walls.
  • antennas with high secondary attenuation are required at very small angular distances in order to avoid mutual interference of the radio fields.
  • antennas such as parabolic or shell antennas
  • shell antennas are available for radio relay systems, with shell antennas mostly reaching predetermined secondary zip attenuations even at lower angles in the horizontal plane.
  • the object of the invention is to design such shell antennas so that there is an increase in the angular attenuation even with small angular displacements from the main beam direction of the antenna, even at lower frequencies.
  • this object is achieved in a mussel antenna of the type mentioned in that the lateral boundary walls at the level of the part of the primary radiator system which directly irradiates the reflector are formed in the direction of the antenna radiation for such a long time that this part of the primary radiator system - in its projection onto the lateral boundary walls - located approximately in the middle between the aperture and reflector, and that the rectilinear aperture-side edges of the two lateral boundary walls run in such a way that the surface vector standing vertically on the aperture is directed obliquely upwards when the primary radiator system is at the bottom and obliquely downwards when the primary radiator system is at the top is.
  • the invention is based on the knowledge that an essential cause of low angular attenuation in the half space around the antenna axis in the known mussel antennas is the retroreflection of the primary radiator system, for example the exciter horn of the mussel antenna.
  • the side walls of the mussel antenna designed according to the invention are thus lengthened such that the direct radiation of the primary radiator system can only emerge from the antenna in a narrow angular range.
  • An advantageous further development of the invention consists in kinking the lateral boundary walls preferably inwards in such a way that the kink lines run approximately vertically.
  • the bend lines are expediently located between this part and the aperture when the part directly irradiating the reflector is projected onto the lateral boundary walls.
  • a mussel antenna designed according to the invention shows no measurable loss in terms of antenna gain compared to the known mussel antennas.
  • the principle specified by the invention is not only for shell antennas fed directly, for example by means of a funnel radiator, but also for those based on the multi-mirror principle, e.g. according to Cassegrain or Gregory, applicable.
  • microwave microwave antenna in the shell design according to the invention has a reflector 1 designed as an eccentric paraboloid of rotation, which according to the offset principle of a Funnel heater 2 is fed with a circular aperture.
  • the antenna is laterally delimited by two boundary walls 3 and 4 and at the bottom by a boundary wall 5 made of metallic material, which is partly provided with an absorber coating.
  • the antenna axis runs through the apex 6 of the reflector 1 and the focal point 7 of the funnel radiator 2.
  • the lateral boundary walls 3 and 4 are formed at the level of the funnel radiator 2 which directly irradiates the reflector 1 in the direction of the antenna radiation for such a long time that the funnel radiator 2 - at its Projection on the side boundary walls 3 and 4 - located approximately in the middle.
  • the radiation from the funnel radiator 2 can thus only emerge directly from the antenna in a narrow angular range.
  • the rectilinear edges of the two lateral boundary walls 3 and 4 run obliquely upwards in such a way that the surface vector e perpendicular to the antenna aperture is directed obliquely upwards.
  • an aperture as was customary in the previous shell antennas and as indicated by the dashed lines 8 and 9 in FIGS.
  • Fig. 3 shows the oblique view of a shell antenna according to the invention, which corresponds to that of Figures 1 and 2 with the exception of the bends in the two lateral boundary walls 3 and 4.
  • Lines 10, 11 and 12 are intended to indicate the aperture limits of the shell antenna of the previously customary design. '
  • Fig. 4 shows in perspective view the embodiment of Figs. 1 and 2, i.e. with kinked lateral boundary walls 3 and 4.
  • the kink lines correspond to the lateral aperture edge lines 10 and 11 of the shell antenna according to the previously customary design.

Landscapes

  • Aerials With Secondary Devices (AREA)
  • Details Of Aerials (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
EP83106196A 1982-06-28 1983-06-24 Antenne à micro-ondes à faisceau dirigé Expired EP0097932B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83106196T ATE29803T1 (de) 1982-06-28 1983-06-24 Mikrowellen-richtfunkantenne.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3224257 1982-06-28
DE19823224257 DE3224257A1 (de) 1982-06-28 1982-06-28 Mikrowellen-richtfunkantenne

Publications (2)

Publication Number Publication Date
EP0097932A1 true EP0097932A1 (fr) 1984-01-11
EP0097932B1 EP0097932B1 (fr) 1987-09-16

Family

ID=6167130

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83106196A Expired EP0097932B1 (fr) 1982-06-28 1983-06-24 Antenne à micro-ondes à faisceau dirigé

Country Status (6)

Country Link
EP (1) EP0097932B1 (fr)
JP (1) JPS5910006A (fr)
AT (1) ATE29803T1 (fr)
DE (2) DE3224257A1 (fr)
DK (1) DK294583A (fr)
FI (1) FI73339C (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2611090A1 (fr) * 1987-02-13 1988-08-19 Mitsubishi Electric Corp Antenne desaxee, notamment pour radar
WO1990001223A1 (fr) * 1988-07-27 1990-02-08 British Telecommunications Public Limited Company Antenne a reflecteur avec alimentation excentree

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4140841A1 (de) * 1990-12-20 1992-07-02 Siemens Ag Mikrowellen-richtfunkantenne

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2724054A (en) * 1946-01-05 1955-11-15 George J Yevick Pillbox antenna
GB1331221A (en) * 1968-01-02 1973-09-26 Elliott Brothers London Ltd Aerials
DE2505375A1 (de) * 1975-02-08 1976-08-19 Licentia Gmbh Antennensystem bestehend aus einem parabolspiegel und einem erreger
US4051476A (en) * 1976-04-01 1977-09-27 Raytheon Company Parabolic horn antenna with microstrip feed
US4349827A (en) * 1980-11-24 1982-09-14 Raytheon Company Parabolic antenna with horn feed array

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4834437B1 (fr) * 1969-09-08 1973-10-20

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2724054A (en) * 1946-01-05 1955-11-15 George J Yevick Pillbox antenna
GB1331221A (en) * 1968-01-02 1973-09-26 Elliott Brothers London Ltd Aerials
DE2505375A1 (de) * 1975-02-08 1976-08-19 Licentia Gmbh Antennensystem bestehend aus einem parabolspiegel und einem erreger
US4051476A (en) * 1976-04-01 1977-09-27 Raytheon Company Parabolic horn antenna with microstrip feed
US4349827A (en) * 1980-11-24 1982-09-14 Raytheon Company Parabolic antenna with horn feed array

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2611090A1 (fr) * 1987-02-13 1988-08-19 Mitsubishi Electric Corp Antenne desaxee, notamment pour radar
WO1990001223A1 (fr) * 1988-07-27 1990-02-08 British Telecommunications Public Limited Company Antenne a reflecteur avec alimentation excentree

Also Published As

Publication number Publication date
ATE29803T1 (de) 1987-10-15
JPS5910006A (ja) 1984-01-19
FI73339B (fi) 1987-05-29
DE3224257A1 (de) 1983-12-29
FI832338L (fi) 1983-12-29
DE3373750D1 (en) 1987-10-22
DK294583A (da) 1983-12-29
DK294583D0 (da) 1983-06-27
FI832338A0 (fi) 1983-06-27
FI73339C (fi) 1987-09-10
EP0097932B1 (fr) 1987-09-16

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