WO2005078864A1 - Antenne a double reflecteur - Google Patents

Antenne a double reflecteur Download PDF

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Publication number
WO2005078864A1
WO2005078864A1 PCT/KZ2004/000004 KZ2004000004W WO2005078864A1 WO 2005078864 A1 WO2005078864 A1 WO 2005078864A1 KZ 2004000004 W KZ2004000004 W KZ 2004000004W WO 2005078864 A1 WO2005078864 A1 WO 2005078864A1
Authority
WO
WIPO (PCT)
Prior art keywords
minor
auxiliary
parabolic mirror
primary
parabolic
Prior art date
Application number
PCT/KZ2004/000004
Other languages
English (en)
Inventor
Ildar Ibragimov
Original Assignee
Tyulebayev, Marat
Novak, Alexandr
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 Tyulebayev, Marat, Novak, Alexandr filed Critical Tyulebayev, Marat
Publication of WO2005078864A1 publication Critical patent/WO2005078864A1/fr

Links

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
    • H01Q19/18—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 having two or more spaced reflecting surfaces
    • H01Q19/19—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 having two or more spaced reflecting surfaces comprising one main concave reflecting surface associated with an auxiliary reflecting surface

Definitions

  • the invention is related to antenna equipment and can be used in radio communications, radiolocation, radioastronomy, radiometeorology and radionavigation.
  • dual-mirror antenna consists of primary mirror with parabolic generator with off-center focal axis parallel to axis of symmetry of dual- mirror antenna; auxiliary mirror with hyperbolic generator, whose first focus is aligned to axis of symmetry of dual-mirror antenna and second focus coincides with focus of primary mirror's parabolic generator; and antenna feed with phase center coinciding with first focus of hyperbolic generator; parabolic and hyperbolic generators superimpose at their intersection; primary mirror with parabolic generator is made up of half of figure of revolution and secondary mirror with hyperbolic generator is of two halves of figure of revolution, generated by revolution of segments of their generators around axis of symmetry of dual-mirror antenna within the semicircle and coinciding in the point located on axis of symmetry of dual-mirror antenna, other extreme point of hyperbolic generator being, the point of its intersection with straight line connecting second focus of hyperbolic generator with primary mirror's edge (pat.
  • That antenna does not allow for noise reduction (when used as a receiving antenna). Moreover, it does not provide for increase of surface utilization factor, reduction of dimensions, increase of electromagnetic energy concentration degree by reflecting waves in parallel directions, nor by creating phase coincidence.
  • There is a known dual-mirror antenna with reduced absolute cross-section consisting of parabolic mirror, flat finned mirror and antenna feed radiating spherical electromagnetic waves with vertical polarization.
  • Parabolic mirror consists of set of vertical metal plates fixed on paraboloid of revolution made of radioparent substance with ⁇ /8 distance between them, where ⁇ is the length of electromagnetic waves.
  • Flat finned mirror consists of metal sheet with attached at 45° to vertical metal plates with 1/4 altitude and distance between them not exceeding ⁇ /8. Construction includes hemispherical minor consisting of a set of horizontal metal plates fixed on a hemisphere made of radioparent substance at ⁇ /8 distance between them and attached above the antenna feed so that its center coincides with feed's phase center (pat. Russian Federation #2072597, cl. H 01 Q 19/195, 1997). Drawback of this construction is impossibility of noise level reduction, increase of surface utilization factor, reduction of dimensions, increase of electromagnetic energy concentration degree by reflecting waves in parallel directions, nor by creating phase coincidence. Most similar to proposed invention is dual-minor antenna consisting of primary parabolic minor and sensor (antenna feed).
  • Auxiliary parabolic minor and antenna feed are installed coaxially with focal axis of primary parabolic minor, while auxiliary minor has an ability to be rotated up to 90° around focal axis and provided with rotation drive (pat. USSR #1543485, cl. H 01 Q 19/18, 1990).
  • This antenna also does not reduce noise level, and does not provide for increase of surface utilization factor, reduction of dimensions, increase of electromagnetic energy concentration degree by reflecting waves in parallel directions, nor by creating phase coincidence.
  • Invention purpose is development of antenna design consisting of two parabolic minors for radiation, reception of electromagnetic waves and providing for direction-finding of radio objects, radiolocation and radionavigation purposes.
  • R is the radius of generator of primary parabolic minor; r is the radius of generator of auxiliary parabolic minor; ; x and y are datum lines.
  • Proposed antenna construction can be made in following variations. Raster angles of primary parabolic minor and auxiliary parabolic minor are equal. Convex surface of auxiliary parabolic minor is directed towards concave surface of primary parabolic minor. Concave surface of auxiliary parabolic minor is directed towards concave surface of primary parabolic minor. Sensor is installed between primary parabolic minor and auxiliary parabolic minor. Sensor is installed at exterior of primary parabolic minor, where an aperture for electromagnetic waves reflected by auxiliary parabolic minor is made. Sensor diameter is equal to auxiliary parabolic minor diameter. Coincidence of focuses of primary parabolic minor and auxiliary parabolic minor provides for reduction of receiving antenna noise level, eliminating influence of foreign radio objects, and reduces the device's dimensions.
  • Fig.l snows the device schematics with convex surface of auxiliary parabolic minor directed towards concave surface of primary parabolic minor and sensor installed between primary parabolic minor and auxiliary parabolic minor;
  • Fig.2 shows the same schematics with sensor installed at exterior of primary parabolic minor;
  • Fig.3 shows the schematics with concave surface of auxiliary parabolic minor directed towards concave surface of primary parabolic minor and sensor installed' between primary parabolic minor and auxiliary parabolic minor;
  • Fig.4 shows the same schematics with sensor installed at exterior of primary parabolic minor.
  • Dual-minor antenna consists of primary parabolic minor (1), auxiliary parabolic minor (2) and sensor or antenna feed (3).
  • R is the radius of generator of primary parabolic minor; r is the radius of generator of auxiliary parabolic minor; x and y are datum lines.
  • Raster (aperture) angles of primary parabolic minor (1) and auxiliary parabolic minor (2) are equal.
  • Convex surface of auxiliary parabolic minor (2) is directed towards concave surface of primary parabolic minor (1).
  • Concave surface of auxiliary parabolic minor (2) is directed towards concave surface of primary parabolic minor (1).
  • Sensor (3) is installed between primary parabolic minor (1) and auxiliary parabolic minor (2).
  • Sensor (3) is installed at exterior of primary parabolic minor (1), where an aperture (5) for electromagnetic waves reflected by auxiliary parabolic minor (2) is made.
  • Sensor (3) diameter is equal to auxiliary parabolic minor (2) diameter.
  • Dual-minor antenna works as follows. When used as a receiving device, electromagnetic waves reflect from concave surface of primary parabolic minor (1) to auxiliary parabolic minor (2), that reflects hem as a parallel beam on sensor (3). Sensor (3) serves as the radiation receiver.
  • metal prefenably fenomagnetic
  • metal for example, 1 mm thick tin plate.
  • Surface of each minor must be thoroughly polished to reduce surface granularity.
  • coating containing! orthophosphoric acid paint that does not reflect the radiation, aluminium, etc is used.
  • Signal receivers are selected depending on frequency range and waveband of received electromagnetic radiation.
  • converter Eurostar ESKD-F8, Ku LNB with C-120 flange can be used, with following specifications: a. Input Freq. 10.7-11.7-12.78GHz b. L.O.Freq. 9.75/10.6GHz c. Bandsw. 0/22KHz Low/HighBand d. Output Freq. 950-2150MHz e. Polarity sw. Ner.l4V/Hor.l8V

Landscapes

  • Aerials With Secondary Devices (AREA)

Abstract

L'invention concerne un équipement d'antenne pouvant être utilisé dans la radiocommunication, dans la radiolocalisation, dans la radioastronomie, dans la radiométéorologie et dans la radionavigation. Selon l'invention, l'antenne à double miroir est constituée d'un miroir parabolique primaire, d'un miroir parabolique auxiliaire et d'un capteur. Les foyers du miroir parabolique primaire et du miroir parabolique auxiliaire coïncident et les générateurs paraboliques des deux miroirs sont définis par la corrélation suivante : x2+y2=(R-x)2; x2+y2=(r-x)2, dans laquelle R représente le rayon du générateur du miroir parabolique primaire ; r représente le rayon du générateur du miroir parabolique auxiliaire ; x et y représentent les lignes de référence. L'antenne selon l'invention peut présenter les variations suivantes : les angles de trame (ouverture) du miroir parabolique primaire (1) et du miroir parabolique auxiliaire (2) sont égaux ; la surface convexe du miroir parabolique auxiliaire (2) est dirigée vers la surface concave du miroir parabolique primaire (1) ; la surface concave du miroir parabolique auxiliaire (2) est dirigée vers la surface concave du miroir parabolique primaire (1) ; le capteur (3) est installé entre le miroir parabolique primaire (1) et le miroir parabolique auxiliaire (2) ; le capteur est installé (3) à l'extérieur du miroir parabolique primaire (1) présentant une ouverture (5) destiné au passage d'ondes électromagnétiques réfléchies par le miroir parabolique primaire (2) ; le diamètre du capteur (3) est égal au diamètre du miroir parabolique auxiliaire (2).
PCT/KZ2004/000004 2003-09-26 2004-09-24 Antenne a double reflecteur WO2005078864A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KZ20031279 2003-09-26
KZ2003/1279.1 2003-09-26

Publications (1)

Publication Number Publication Date
WO2005078864A1 true WO2005078864A1 (fr) 2005-08-25

Family

ID=34858911

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KZ2004/000004 WO2005078864A1 (fr) 2003-09-26 2004-09-24 Antenne a double reflecteur

Country Status (1)

Country Link
WO (1) WO2005078864A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112903801A (zh) * 2021-01-27 2021-06-04 南开大学 一种离子光解离方法及装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4259674A (en) * 1979-10-24 1981-03-31 Bell Laboratories Phased array antenna arrangement with filtering to reduce grating lobes
US4814778A (en) * 1986-07-04 1989-03-21 Agence Spatiale Europeenne Large scan antenna with fixed main reflector and fixed feed, particularly for use at ultrahigh frequencies, carried on board a satellite and a satellite equipped with such an antenna

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4259674A (en) * 1979-10-24 1981-03-31 Bell Laboratories Phased array antenna arrangement with filtering to reduce grating lobes
US4814778A (en) * 1986-07-04 1989-03-21 Agence Spatiale Europeenne Large scan antenna with fixed main reflector and fixed feed, particularly for use at ultrahigh frequencies, carried on board a satellite and a satellite equipped with such an antenna

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
GOUKER M A ET AL: "A hybrid-circuit tile-approach architecture for high-power spatial power-combined transmitters", TELESYSTEMS CONFERENCE, 1994. CONFERENCE PROCEEDINGS., 1994 IEEE NATIONAL SAN DIEGO, CA, USA 26-28 MAY 1994, NEW YORK, NY, USA,IEEE, 26 May 1994 (1994-05-26), pages 47 - 50, XP010121628, ISBN: 0-7803-1869-2 *
H.D. HRISTOV AND N.M. KIROV: "Cross polarization characteristics of Cassegrain confocal paraboloidal antenna with dielectric feed rod", CONFERENCE PROCEEDINGS 9TH EUROPEAN MICROWAVE CONFERENCE, 16 September 1979 (1979-09-16), SEVENOAKS, KENT, ENGLAND, pages 201 - 205, XP002311919 *
K. WOO AND P. CRAMER JR.: "Limited scan near-field cassegrainian antenna", CONFERENCE PROCEEDINGS IEEE AP-S SYMPOSIUM, 11 October 1976 (1976-10-11), PISCATAWAY, USA, pages 323 - 325, XP002311918 *
LENORMAND R ET AL: "LARGE ANGULAR ELECTRONIC BEAM STEERING ANTENNA FOR SPACE APPLICATION", PROCEEDINGS OF THE ANTENNAS AND PROPAGATION SOCIETY INTERNATIONAL SYMPOSIUM (APSIS). CHICAGO, JULY 20 - 24, 1992, NEW YORK, IEEE, US, vol. VOL. 1, 20 July 1992 (1992-07-20), pages 2 - 4, XP000342297, ISBN: 0-7803-0730-5 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112903801A (zh) * 2021-01-27 2021-06-04 南开大学 一种离子光解离方法及装置

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