WO2009024995A3 - A method for simultaneously generating pencil beam and shaped beam from a single shaped reflector - Google Patents

A method for simultaneously generating pencil beam and shaped beam from a single shaped reflector Download PDF

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Publication number
WO2009024995A3
WO2009024995A3 PCT/IN2008/000203 IN2008000203W WO2009024995A3 WO 2009024995 A3 WO2009024995 A3 WO 2009024995A3 IN 2008000203 W IN2008000203 W IN 2008000203W WO 2009024995 A3 WO2009024995 A3 WO 2009024995A3
Authority
WO
WIPO (PCT)
Prior art keywords
shaped
reflector
feed
generating
pencil beam
Prior art date
Application number
PCT/IN2008/000203
Other languages
French (fr)
Other versions
WO2009024995A2 (en
Inventor
A. Bhaskarnarayana
S. B. Sharma
Milind Mahajan
Rajeev Jyoti
Original Assignee
Indian Space Research Organisation
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 Indian Space Research Organisation filed Critical Indian Space Research Organisation
Publication of WO2009024995A2 publication Critical patent/WO2009024995A2/en
Publication of WO2009024995A3 publication Critical patent/WO2009024995A3/en

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
    • H01Q15/14—Reflecting surfaces; Equivalent structures
    • H01Q15/147—Reflecting surfaces; Equivalent structures provided with means for controlling or monitoring the shape of the reflecting surface
    • 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
    • H01Q19/17—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 comprising two or more radiating elements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q25/00—Antennas or antenna systems providing at least two radiating patterns
    • H01Q25/004—Antennas or antenna systems providing at least two radiating patterns providing two or four symmetrical beams for Janus application

Abstract

The invention relates to concept of generating pencil beam from a shaped reflector (1 ) that is shaped for some arbitrary coverage beam. The invention finds extensive application in the communication satellite antennas where a spot beam (pencil beam) is required to be generated in addition to the shaped beam from a same shaped reflector. The present invention finds wide application in the reflector surface distortion compensation. This invention reduces complexity over the existing art of compensating surface distortions. The invention describes the single shaped reflector with one feed for shaped beam and one for generating pencil beam away from shaped beam. One feed (2) is placed at focus for generating shaped beam and second feed (3) is placed such that it generates the pencil beam, which is equivalent to that generated from a same size parabolic reflector. The invention also provides technique to generate coverage and other is small coverage area.
PCT/IN2008/000203 2007-08-22 2008-03-28 A method for simultaneously generating pencil beam and shaped beam from a single shaped reflector WO2009024995A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IN1876CH2007 2007-08-22
IN1876/CHE/2007 2007-08-22

Publications (2)

Publication Number Publication Date
WO2009024995A2 WO2009024995A2 (en) 2009-02-26
WO2009024995A3 true WO2009024995A3 (en) 2010-09-16

Family

ID=40378800

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IN2008/000203 WO2009024995A2 (en) 2007-08-22 2008-03-28 A method for simultaneously generating pencil beam and shaped beam from a single shaped reflector

Country Status (1)

Country Link
WO (1) WO2009024995A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111262612B (en) * 2020-01-16 2022-11-22 电子科技大学 Array shaped beam analytic synthesis method based on pencil beam

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5258767A (en) * 1989-03-14 1993-11-02 Kokusai Denshin Denwa Co., Ltd. Antenna system for shaped beam
US6169518B1 (en) * 1980-06-12 2001-01-02 Raytheon Company Dual beam monopulse antenna system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6169518B1 (en) * 1980-06-12 2001-01-02 Raytheon Company Dual beam monopulse antenna system
US5258767A (en) * 1989-03-14 1993-11-02 Kokusai Denshin Denwa Co., Ltd. Antenna system for shaped beam

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
SUDHAKAR RAO, K. ET AL.: "Modeling of Shaped Beam Satellite Antenna Patterns", IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, vol. AP-35, no. 6, June 1987 (1987-06-01), pages 632 - 642 *

Also Published As

Publication number Publication date
WO2009024995A2 (en) 2009-02-26

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