EP0227930A1 - Support d'antenne à réflecteur parabolique pour télécommunication par satellite - Google Patents

Support d'antenne à réflecteur parabolique pour télécommunication par satellite Download PDF

Info

Publication number
EP0227930A1
EP0227930A1 EP86115720A EP86115720A EP0227930A1 EP 0227930 A1 EP0227930 A1 EP 0227930A1 EP 86115720 A EP86115720 A EP 86115720A EP 86115720 A EP86115720 A EP 86115720A EP 0227930 A1 EP0227930 A1 EP 0227930A1
Authority
EP
European Patent Office
Prior art keywords
axis
antenna
declination
hour
location
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
EP86115720A
Other languages
German (de)
English (en)
Other versions
EP0227930B1 (fr
Inventor
Heinz Dipl.-Ing. Bobek (Fh)
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
Original Assignee
Siemens AG
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6286118&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0227930(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Siemens AG filed Critical Siemens AG
Priority to AT86115720T priority Critical patent/ATE55513T1/de
Publication of EP0227930A1 publication Critical patent/EP0227930A1/fr
Application granted granted Critical
Publication of EP0227930B1 publication Critical patent/EP0227930B1/fr
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
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/125—Means for positioning

Definitions

  • the invention relates to a support frame for a symmetrical parabolic reflector antenna which is to be aligned with a geostationary communication satellite which moves in an equatorial orbit and which can be pivoted about a declination axis and about an hour axis crossing it perpendicularly.
  • the object of the invention is to provide a support frame for a parabolic reflector antenna which can be used in mobile earth radio stations and which makes the construction of the antennas at different locations as easy as possible for users of such mobile stations, including an essentially tool-free setting for the respective satellite position, and with different antennas alignments brings only a small polarization rotation in the entire antenna swivel range.
  • this object is achieved in that a total of six struts are provided, two of which each form an isosceles triangle with the declination axis running in the east-west direction and are pivotally mounted on a foundation about the declination axis in two bearing points that in each case through the two corners of the two isosceles triangles lying one above the other, facing away from the declination axis, the hour axis to be aligned parallel to the earth's axis runs such that the parabolic reflector antenna is preferably pivotally pivoted about the hour axis at the two corners of the two triangles facing away from the declination axis, in such a way that at absolutely parallel course of the hour axis to the earth axis the parabolic reflector antenna axis is inclined by an angle dependent on the geographic latitude of the antenna location relative to the hour axis that the two other struts are adjustable in length ldet are that the one adjustable for setting the hour axis inclination stru
  • the attachment of the parabolic reflector antenna to the support frame designed according to the invention is therefore an almost real declination hour axis suspension of the parabolic mirror.
  • the antenna beam can be aligned to each satellite position in the orbit plane by actuating only one of the two adjustable struts.
  • This requires the angle assignment between the parabolic reflector and the polar axis, which is determined by the angle ⁇ and is slightly dependent on the geographic latitude of the antenna location.
  • this angle is defined for an average geographical width of an area.
  • the declination angle i.e. the direction to the polar axis
  • ⁇ 7 ° one and the same type of construction of the antenna can accordingly be used for an area up to 14 ° north-south extension.
  • the support frame made of tubular material according to the invention is then expediently constructed so that the base line of the isosceles foundation represents the declination axis. Between the tip of the foundation and one end of the hourly axis crossing the declination axis is the adjustment strut with which the inclination of the hourly axis can be adjusted.
  • the parabolic reflector is preferably axially symmetrical on the hour axis, in such a way that when the hour axis is absolutely parallel, the parabolic reflector is inclined by the angle ⁇ relative to the sky equatorial plane. This ensures that the antenna with its main lobe is aimed at the geostationary earth orbit of the satellites.
  • the mean lead angle ⁇ m is calculated with a mean northern latitude of 51 ° to 7.42 °.
  • a suitable lead angle ⁇ m must be calculated for other countries.
  • the adjustment strut that is attached between one end of the declination axis and the parabolic reflector is used to set the hour angle. Due to the different distances on the one hand between the antenna location and the satellite and on the other hand between the center of the earth and the satellite, there is an angular difference between the satellite position in orbit to the antenna location and the setting of the hour angle on the antenna. This difference corresponds to the polarization rotation of the orthogonally polarized signal from the satellite. Due to the angular construction of the antenna parabolic reflector on the hour axis, there is a relatively small polarization rotation in the entire swivel range of the antenna.
  • FIG. 1 shows, in a lateral, schematic view, a support frame designed according to the invention for a symmetrical parabolic reflector antenna 14 to be aligned with a geostationary communication satellite moving in an equatorial orbit.
  • the antenna 14 should be pivotable about a declination axis 7 and about an hour axis 8 crossing it perpendicularly.
  • FIG. 2 is also used in addition to FIG. 1, in which a perspective view of essential parts of this support frame is shown.
  • the support frame has a total of 6 struts 1 to 6, of which the two struts 1 and 2 or 3 and 4 each form an isosceles triangle with the declination axis 7 running in the east-west direction.
  • the struts 1, 2 and 3, 4 are mounted together on a foundation 9 and are pivotably mounted about the declination axis 7 in two bearing points 10 and 11.
  • the parabolic reflector antenna 14 is axially symmetrical at the two corners 12 and 13 of the two facing away from the declination axis 7 Isosceles triangles articulated so that the parabolic reflector antenna axis is inclined by an angle ⁇ m that is dependent on the geographic width of the respective antenna location relative to the equatorial plane angle when the hour axis 8 is absolutely perpendicular on the equatorial plane 17.
  • the angle ⁇ m is realized by a spacer 21.
  • the two remaining struts 5 and 6 are adjustable in length.
  • the strut 5 which is adjustable to adjust the hour axis inclination ⁇ , is attached with both ends of the pivot joint between the corner 13 of the lower of the two isosceles triangles facing away from the declination axis 7 and a point 15 of the foundation 9 through which the plane defined by the bisector of the two isosceles triangles runs .
  • the location 15 of the foundation 9 is at an antenna location on the northern hemisphere south of the declination axis 7, as shown in FIG. 2.
  • the perpendicular bisection of the declination axis 7 runs through the articulation point 15 of the adjustment strut 5.
  • the other strut 6, which is designed to be adjustable for setting the hour angle, is likewise provided with a swivel bearing at both ends between an eccentric bearing 16 and 16 provided for this purpose on the back or parabolic reflector the respectively more distant of the two strut bearing points 10 and 11 through which the declination axis 7 runs.
  • the foundation 9 has the shape of an isosceles triangle, which is oriented exactly to the south with its tip 15.
  • the base line of the triangular foundation 9 represents the declination axis 7.
  • the antenna 14 Due to the inclination of the parabolic reflector antenna 14 by the angle ⁇ m against the sky equatorial plane 17 it is achieved that the antenna 14 is directed with its main lobe onto the geostationary earth orbit of the satellites.
  • the angle ⁇ m is calculated with an average northern latitude of 51 ° to 7.42 °.
  • a suitable lead angle ⁇ m must be calculated for other countries.
  • Fig. 1 with ⁇ m is the mean angle of latitude for the Federal Republic of Germany (51 °).
  • the hour axis 8 of the antenna 14 must run parallel to the earth's axis and should therefore be perpendicular to the equatorial plane 17. With the help of the declination axis 7, the inclination of the hour axis 8 with respect to the perpendicular to the plumb line can be set. This adjustment is made using the adjustment strut 5.
  • the alignment of the parabolic reflector antenna 14 towards the satellite position after the hour axis 8 has been set can be carried out without great difficulty.
  • the hour angle must first be calculated, which is significantly influenced by the location of the antenna location.
  • the mean latitude is 51 ° north.
  • the earth radius multiplied by the cosine of this angle gives approximately the amount by which the swivel radius of the antenna is smaller than the distance between the center of the earth and the satellite orbit.
  • ⁇ satellite position depending on the antenna location
  • r1 orbit radius of the satellite, based on the center of the earth
  • r2 earth radius
  • ⁇ latitude of the antenna location.
  • FIG. 9 A graphical representation of such a table is shown in Fig. 9, related to 51 ° north latitude (this is the mean geographic latitude of the Federal Republic of Germany), with the hour axis on the abscissa in degrees west longitude wL and east longitude oil and an the abscissa the polarization rotation is also plotted in degrees.
  • the fitter on site is thus able to align the antenna 14 fairly precisely with the satellite position using angle measuring devices on the declination axis 7 and on the hour axis 8.
  • the antenna according to FIGS. 5 and 6 should have an hourly angle adjustment range of ⁇ 80 °, ie a total of 160 °.
  • the antenna location Kunststoff on earth E is designated with M. This is 48 ° north latitude and 11 ° east longitude.
  • the south-facing meridian 11 ° east longitude is labeled south.
  • the Intelsat V satellite IS V at 60 ° west longitude, the communications satellite DFS1 at 23.5 ° east longitude and another communications satellite DFS2 at 28.5 ° east longitude are orbiting geostationarily. All three satellites can be detected by pivoting the parabolic reflector antenna attached to the location M on the support frame designed according to the invention.
  • the smaller circle, which touches the orbit OR on the south meridian and has the antenna location M as the center, is labeled R.
  • the sky equator has the designation H.
  • the parabolic reflector antenna with support frame shown in FIGS. 5 and 6 in a rear view and a view from above is constructed according to the principle explained in connection with FIGS. 1 and 2. Wear the parts of the antenna according to Figures 5 and 6 hence the reference numerals of the corresponding parts of the illustration in FIGS. 1 and 2.
  • the parabolic reflector antenna 14 is suspended on the antenna support frame in the axis of symmetry of the parabolic reflector. This has the advantage that no torques act on the hour axis 8 and that the hour angle adjustment strut 6 manages with a maximum of three equally long intermediate pieces 18, 19 and 20, corresponding to an angle of 25 °.
  • the adjustment range of ⁇ 80 ° is achieved by moving the hour axis strut 6.
  • the strut 6 is attached to the right of the parabolic reflector in a bearing 16 and to the left of the declination axis at the foundation position 10; for satellites lying east of the south direction, vice versa. Due to the optimal position of the center of gravity S, no torque is exerted on the hour axis 8, which would cause the hour angle to be adjusted.
  • the struts 1 to 6 consist of tube material.
  • the two adjustable struts 5 and 6 are each composed of two parts 22 and 23 or 24 and 25, which have 26 internal threads at the two mutually facing ends, in which an adjusting spindle 27 is screwed.

Landscapes

  • Aerials With Secondary Devices (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
EP86115720A 1985-11-15 1986-11-12 Support d'antenne à réflecteur parabolique pour télécommunication par satellite Expired - Lifetime EP0227930B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86115720T ATE55513T1 (de) 1985-11-15 1986-11-12 Tragegestell fuer eine satellitenfunkparabolreflektorantenne.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3540612 1985-11-15
DE3540612 1985-11-15

Publications (2)

Publication Number Publication Date
EP0227930A1 true EP0227930A1 (fr) 1987-07-08
EP0227930B1 EP0227930B1 (fr) 1990-08-08

Family

ID=6286118

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86115720A Expired - Lifetime EP0227930B1 (fr) 1985-11-15 1986-11-12 Support d'antenne à réflecteur parabolique pour télécommunication par satellite

Country Status (3)

Country Link
EP (1) EP0227930B1 (fr)
AT (1) ATE55513T1 (fr)
DE (1) DE3673363D1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0266026A1 (fr) * 1986-08-01 1988-05-04 HER MAJESTY THE QUEEN in right of New Zealand Department of Scientific and Industrial Research Antenne de poursuite
GB2215135A (en) * 1988-02-06 1989-09-13 Varitrack Dbs Limited A support for a satellite tracking dish
FR2696281A1 (fr) * 1992-09-25 1994-04-01 Europ Agence Spatiale Monture d'antenne à pointage réglable, notamment pour antenne de télécommunications par satellite.
US5351060A (en) * 1991-02-25 1994-09-27 Bayne Gerald A Antenna
ES2231026A1 (es) * 2003-10-27 2005-05-01 Ramem, S.A. Posicionador tipo hexapodo para seguimiento solar de reflectores solares.
CN109546341A (zh) * 2018-11-21 2019-03-29 廊坊泰泓卫星通信技术发展有限公司 一种微调三连杆机构及智能天线

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2809158A1 (de) * 1978-03-03 1979-09-06 Dornier System Gmbh Vorrichtung zur lagerung von um zwei sich kreuzende achsen ausrichtbaren geraeten
US4232320A (en) * 1978-04-21 1980-11-04 Andrew Corporation Mount for earth station antenna
EP0032227A1 (fr) * 1979-12-24 1981-07-22 Siemens Aktiengesellschaft Antenne pour postes de récaption terrestres
EP0032340A1 (fr) * 1980-01-11 1981-07-22 Thomson-Csf Support d'antenne orientable et son utilisation

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2809158A1 (de) * 1978-03-03 1979-09-06 Dornier System Gmbh Vorrichtung zur lagerung von um zwei sich kreuzende achsen ausrichtbaren geraeten
US4232320A (en) * 1978-04-21 1980-11-04 Andrew Corporation Mount for earth station antenna
EP0032227A1 (fr) * 1979-12-24 1981-07-22 Siemens Aktiengesellschaft Antenne pour postes de récaption terrestres
EP0032340A1 (fr) * 1980-01-11 1981-07-22 Thomson-Csf Support d'antenne orientable et son utilisation

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENTS ABSTRACTS OF JAPAN, Band 3, Nr. 125 (E-45), 19. Oktober 1979, Seite 84E145; & JP-A-54 102 851 (NIPPON DENKI K.K.) 13-08-1979 *

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0266026A1 (fr) * 1986-08-01 1988-05-04 HER MAJESTY THE QUEEN in right of New Zealand Department of Scientific and Industrial Research Antenne de poursuite
GB2215135A (en) * 1988-02-06 1989-09-13 Varitrack Dbs Limited A support for a satellite tracking dish
US5351060A (en) * 1991-02-25 1994-09-27 Bayne Gerald A Antenna
FR2696281A1 (fr) * 1992-09-25 1994-04-01 Europ Agence Spatiale Monture d'antenne à pointage réglable, notamment pour antenne de télécommunications par satellite.
WO1994008360A1 (fr) * 1992-09-25 1994-04-14 Agence Spatiale Europeenne Monture d'antenne a pointage reglable, notamment pour antenne de telecommunications par satellite
US5852423A (en) * 1992-09-25 1998-12-22 Agence Spatiale Europeene Variable pointing antenna mount, suitable for satellite telecommunication antennas
ES2231026A1 (es) * 2003-10-27 2005-05-01 Ramem, S.A. Posicionador tipo hexapodo para seguimiento solar de reflectores solares.
CN109546341A (zh) * 2018-11-21 2019-03-29 廊坊泰泓卫星通信技术发展有限公司 一种微调三连杆机构及智能天线
CN109546341B (zh) * 2018-11-21 2023-08-11 廊坊泰泓卫星通信技术发展有限公司 一种微调三连杆机构及智能天线

Also Published As

Publication number Publication date
DE3673363D1 (de) 1990-09-13
ATE55513T1 (de) 1990-08-15
EP0227930B1 (fr) 1990-08-08

Similar Documents

Publication Publication Date Title
US4652890A (en) High rigidity, low center of gravity polar mount for dish type antenna
DE2544867C2 (fr)
US4602259A (en) Polar mount antenna satellite tracking apparatus and method of alignment thereof
DE602004011001T2 (de) Linsenantennenvorrichtung
DE2702297C2 (de) Nachführeinrichtung zur kontinuierlichen Ausrichtung eines Sonnenkollektors
DE2454830A1 (de) Richtgestell fuer antenne zur nachrichtenuebermittlung
DE2941377C2 (fr)
EP0227930B1 (fr) Support d'antenne à réflecteur parabolique pour télécommunication par satellite
DE10310753A1 (de) Satellitenverfolgungssystem unter Verwendung von Bahnverfolgungstechniken
DE3211372C2 (fr)
DE2224849A1 (de) Vermessungsgeraet
DE2456110C3 (de) Träger für ein astronomisches Refraktorteleskop
DE2702340C3 (de) Schiffsantenne
DE2809158C3 (de) Transportable Vorrichtung zur bedarfsweise auf- und abbaufähigen beweglichen Lagerung von um zwei sich kreuzende Achsen ausrichtbaren Geräten
DE2030215C3 (de) Einrichtung zur Verfolgung eines Zieles durch einen Lichtstrahl
DE3244225A1 (de) Anordnung zum positionieren von vorrichtungen wie antennen, solargeneratoren o.ae.
DE2932085B2 (de) Montierung für Teleskop auf einem Unterbau
DE3127855A1 (de) Halterung fuer eine in azimut- und elevationsrichtung schwenkbare parabolantenne
EP0032227B1 (fr) Antenne pour postes de récaption terrestres
EP0076978B1 (fr) Dispositif de support adjustable d'un réflecteur positionné sur un satellite
DE3511465A1 (de) Justiereinrichtung fuer antennentraeger
DE19517744A1 (de) Anordnung zur Korrektur der Mißweisung in einem optisch ablesbaren Peilkompaß
DE2735844C3 (de) Richtungsfehler-Kompensationseinrichtung, beispielsweise für Zielverfolgungsantennen
DE4126632A1 (de) Richtantenne
DE661764C (de) Praezessionsglobus

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): AT BE CH DE FR GB IT LI NL SE

17P Request for examination filed

Effective date: 19870724

17Q First examination report despatched

Effective date: 19881212

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE FR GB IT LI NL SE

REF Corresponds to:

Ref document number: 55513

Country of ref document: AT

Date of ref document: 19900815

Kind code of ref document: T

REF Corresponds to:

Ref document number: 3673363

Country of ref document: DE

Date of ref document: 19900913

ET Fr: translation filed
ITF It: translation for a ep patent filed

Owner name: STUDIO JAUMANN

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

Free format text: ORIGINAL CODE: 0009260

26 Opposition filed

Opponent name: KABELMETAL ELECTRO GMBH

Effective date: 19910508

NLR1 Nl: opposition has been filed with the epo

Opponent name: KABELMETAL ELECTRO GMBH

ITTA It: last paid annual fee
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19920221

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: 19921117

Year of fee payment: 7

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

Ref country code: LI

Effective date: 19921130

Ref country code: CH

Effective date: 19921130

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

Ref country code: NL

Payment date: 19921130

Year of fee payment: 7

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

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

Ref country code: BE

Effective date: 19931130

PLBM Termination of opposition procedure: date of legal effect published

Free format text: ORIGINAL CODE: 0009276

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: OPPOSITION PROCEDURE CLOSED

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

Ref country code: DE

Payment date: 19940119

Year of fee payment: 8

27C Opposition proceedings terminated

Effective date: 19931009

NLR2 Nl: decision of opposition
BERE Be: lapsed

Owner name: SIEMENS A.G.

Effective date: 19931130

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

Ref country code: NL

Effective date: 19940601

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19941018

Year of fee payment: 9

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

Ref country code: AT

Payment date: 19941027

Year of fee payment: 9

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

Ref country code: SE

Payment date: 19941116

Year of fee payment: 9

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

Ref country code: FR

Payment date: 19941117

Year of fee payment: 9

EAL Se: european patent in force in sweden

Ref document number: 86115720.4

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

Ref country code: DE

Effective date: 19950801

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

Ref country code: GB

Effective date: 19951112

Ref country code: AT

Effective date: 19951112

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

Ref country code: SE

Effective date: 19951113

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

Effective date: 19951112

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

Ref country code: FR

Effective date: 19960731

EUG Se: european patent has lapsed

Ref document number: 86115720.4

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

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: 20051112