JPS5773506A - Common antenna for multifrequency band - Google Patents

Common antenna for multifrequency band

Info

Publication number
JPS5773506A
JPS5773506A JP14935880A JP14935880A JPS5773506A JP S5773506 A JPS5773506 A JP S5773506A JP 14935880 A JP14935880 A JP 14935880A JP 14935880 A JP14935880 A JP 14935880A JP S5773506 A JPS5773506 A JP S5773506A
Authority
JP
Japan
Prior art keywords
mirror
radiated
center
reflecting mirror
electromagnetic waves
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.)
Pending
Application number
JP14935880A
Other languages
Japanese (ja)
Inventor
Kenji Ueno
Hiroyuki Kumazawa
Makoto Ando
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone 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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP14935880A priority Critical patent/JPS5773506A/en
Publication of JPS5773506A publication Critical patent/JPS5773506A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H01Q5/40—Imbricated or interleaved structures; Combined or electromagnetically coupled arrangements, e.g. comprising two or more non-connected fed radiating elements
    • H01Q5/45—Imbricated or interleaved structures; Combined or electromagnetically coupled arrangements, e.g. comprising two or more non-connected fed radiating elements using two or more feeds in association with a common reflecting, diffracting or refracting device

Abstract

PURPOSE:To radiate a plurality of beams in different frequency band, by using a reflecting mirror synthesized with a plurality of rotating parabola planes having different focal lengths. CONSTITUTION:Electromagnetic waves radiated from a primary radiator 5 is radiated as plane waves from a reflecting mirror 3. When a distance (l) between the center 6 of the mirror 3 and the center 6' of the mirror 3' is <=1/8 than the feeding wavelength, the deterioration by the mirror 3' is less. A part of the electromagnetic waves from a primary radiator 5' is radiated by the reflecting mirror 3 and gives effect to the beam from the mirror 3', but the reflecting mirror 3 can be neglected by regulating the strength of electromagnetic waves at the outside of the mirror 3' to <=1/10 than that toward the center. Thus, a plurality of beams in different frequency bands can be radiated efficiently.
JP14935880A 1980-10-27 1980-10-27 Common antenna for multifrequency band Pending JPS5773506A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14935880A JPS5773506A (en) 1980-10-27 1980-10-27 Common antenna for multifrequency band

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14935880A JPS5773506A (en) 1980-10-27 1980-10-27 Common antenna for multifrequency band

Publications (1)

Publication Number Publication Date
JPS5773506A true JPS5773506A (en) 1982-05-08

Family

ID=15473378

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14935880A Pending JPS5773506A (en) 1980-10-27 1980-10-27 Common antenna for multifrequency band

Country Status (1)

Country Link
JP (1) JPS5773506A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2595874A1 (en) * 1986-03-13 1987-09-18 Boeing Co DUAL MODE SIGNAL SEPARATOR
JPH02248102A (en) * 1989-03-20 1990-10-03 Shinya Kawamoto Parabolic antenna for receiving radio wave coming from two directions simultaneously
FR2653941A1 (en) * 1989-10-31 1991-05-03 Thomson Lgt MULTIFOCAL RECEPTION ANTENNA WITH SINGLE POINT DIRECTION FOR MULTIPLE SATELLITES.
JPH06152232A (en) * 1992-11-06 1994-05-31 Fujitsu General Ltd Parabolic antenna
US5334990A (en) * 1990-03-26 1994-08-02 K-Star International Corp. Ku-band satellite dish antenna
EP1085598A2 (en) * 1999-09-20 2001-03-21 EADS Deutschland Gmbh Reflector with shaped surface and spatial separated foci for the illumination of identical areas, antenna system and method for determining the surface
WO2020194423A1 (en) * 2019-03-25 2020-10-01 株式会社日立国際電気 Radio communication device

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2595874A1 (en) * 1986-03-13 1987-09-18 Boeing Co DUAL MODE SIGNAL SEPARATOR
JPH02248102A (en) * 1989-03-20 1990-10-03 Shinya Kawamoto Parabolic antenna for receiving radio wave coming from two directions simultaneously
FR2653941A1 (en) * 1989-10-31 1991-05-03 Thomson Lgt MULTIFOCAL RECEPTION ANTENNA WITH SINGLE POINT DIRECTION FOR MULTIPLE SATELLITES.
WO1991006988A1 (en) * 1989-10-31 1991-05-16 Thomson-Lgt Laboratoire General Des Telecommunications Multifocal receiving antenna with a single plotting direction for several satellites
US5309167A (en) * 1989-10-31 1994-05-03 Thomson-Lgt Laboratoire General Des Telecommunications Multifocal receiving antenna with a single aiming direction for several satellites
US5334990A (en) * 1990-03-26 1994-08-02 K-Star International Corp. Ku-band satellite dish antenna
JPH06152232A (en) * 1992-11-06 1994-05-31 Fujitsu General Ltd Parabolic antenna
EP1085598A2 (en) * 1999-09-20 2001-03-21 EADS Deutschland Gmbh Reflector with shaped surface and spatial separated foci for the illumination of identical areas, antenna system and method for determining the surface
JP2001127538A (en) * 1999-09-20 2001-05-11 Daimlerchrysler Ag Reflecting mirror for antenna, antenna system using the reflecting mirror, and method for deciding surface shape of the reflecting mirror
US6255997B1 (en) 1999-09-20 2001-07-03 Daimlerchrysler Ag Antenna reflector having a configured surface with separated focuses for covering identical surface areas and method for ascertaining the configured surface
EP1085598A3 (en) * 1999-09-20 2002-07-31 EADS Deutschland Gmbh Reflector with shaped surface and spatial separated foci for the illumination of identical areas, antenna system and method for determining the surface
WO2020194423A1 (en) * 2019-03-25 2020-10-01 株式会社日立国際電気 Radio communication device
JPWO2020194423A1 (en) * 2019-03-25 2021-12-16 株式会社日立国際電気 Wireless communication device

Similar Documents

Publication Publication Date Title
US4489331A (en) Two-band microwave antenna with nested horns for feeding a sub and main reflector
GB663166A (en) Improvements in or relating to antenna
CA2023544A1 (en) Planar slotted antenna with radial line
US4096483A (en) Reflector with frequency selective ring of absorptive material for aperture control
US3332083A (en) Cassegrain antenna with offset feed
JPS5773506A (en) Common antenna for multifrequency band
JPS57178402A (en) Multireflex mirror antenna
GB755011A (en) Improvements relating to radio beam antenna arrangements
GB1163156A (en) Improvements in or relating to Paraboloidal Antennae with Counter-Reflectors.
JPS56141603A (en) Plural horn type antenna
GB1512681A (en) Arrangement comprising an electromagnetic wave filtering grid
US2530079A (en) Directive antenna system
JPS5720002A (en) Short backfire antenna
GB1136174A (en) Improvements in antennae
JPS5765901A (en) Radome
JPS5746506A (en) Short back fire antenna
JPS57154909A (en) Frequency band shared antenna
JPS56119504A (en) Antenna shared among multifrequency band
JPS5647106A (en) Multihorn shaped-beam antenna
JPS6481504A (en) Offset antenna
GB633061A (en) Improvements in or relating to wireless aerial arrangements
GB700868A (en) Improvements in or relating to high frequency radio aerials
JPS56110305A (en) Fan-shaped beam antenna
US3510874A (en) Pyramidal horn reflector antenna
JPS55153402A (en) Offset parabola antenna feeding plurality of horns