JPS555521A - Low side lobe antenna unit - Google Patents

Low side lobe antenna unit

Info

Publication number
JPS555521A
JPS555521A JP7803578A JP7803578A JPS555521A JP S555521 A JPS555521 A JP S555521A JP 7803578 A JP7803578 A JP 7803578A JP 7803578 A JP7803578 A JP 7803578A JP S555521 A JPS555521 A JP S555521A
Authority
JP
Japan
Prior art keywords
reflection
scattered
side lobe
mirror
reflection mirror
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
JP7803578A
Other languages
Japanese (ja)
Other versions
JPS5951769B2 (en
Inventor
Tadashi Takano
Takashi Yamada
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.)
NTT Inc
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 JP7803578A priority Critical patent/JPS5951769B2/en
Publication of JPS555521A publication Critical patent/JPS555521A/en
Publication of JPS5951769B2 publication Critical patent/JPS5951769B2/en
Expired legal-status Critical Current

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
    • H01Q19/02—Details
    • H01Q19/021—Means for reducing undesirable effects
    • H01Q19/026—Means for reducing undesirable effects for reducing the primary feed spill-over

Landscapes

  • Aerials With Secondary Devices (AREA)

Abstract

PURPOSE:To obtain the low side lobe performance very excellent, by providing the reflection plate so that the direction of scattered wave can be toward the permissible direction. CONSTITUTION:Electromagnetic waves emitted from the primary radiator 1 to the side reflection mirror 2 mostly go toward the major reflection mirror 3, and a part of them is scattered at the edge of the mirror 2 and it is emitted toward all the spaces. The scattered waves emitted on the horizontal plane cause interferrence with other radio lines. The reflection plate 4 is provided toward upper sky to shield the scattered waves, and the scattered waves in horizontal plane from the edge of the main reflection mirror 3 are toward the upper sky with the reflection mirror 3. Since the distribution of electric field is rapidly decreased at the end of electromagnetic wave path, when the reflection plates 4 and 5 are placed with a distance from the center of the electromagnetic wave path, the scattering from the edges of those reflection plates can be prevented. The size of the reflection plate is determined with desired amount of shield. Thus, the offset type antenna having lower side lobe performance than conventional methods can be formed.
JP7803578A 1978-06-29 1978-06-29 Low sidelobe antenna device Expired JPS5951769B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7803578A JPS5951769B2 (en) 1978-06-29 1978-06-29 Low sidelobe antenna device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7803578A JPS5951769B2 (en) 1978-06-29 1978-06-29 Low sidelobe antenna device

Publications (2)

Publication Number Publication Date
JPS555521A true JPS555521A (en) 1980-01-16
JPS5951769B2 JPS5951769B2 (en) 1984-12-15

Family

ID=13650550

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7803578A Expired JPS5951769B2 (en) 1978-06-29 1978-06-29 Low sidelobe antenna device

Country Status (1)

Country Link
JP (1) JPS5951769B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0397212U (en) * 1990-01-24 1991-10-07
CN102709674A (en) * 2012-04-28 2012-10-03 深圳光启创新技术有限公司 Meta-material satellite antenna and satellite receiving system
JP2013093846A (en) * 2011-10-17 2013-05-16 Mcdonald Deadwiler And Associates Ltd Wide scan steerable antenna with no key-hole

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0397212U (en) * 1990-01-24 1991-10-07
JP2013093846A (en) * 2011-10-17 2013-05-16 Mcdonald Deadwiler And Associates Ltd Wide scan steerable antenna with no key-hole
CN102709674A (en) * 2012-04-28 2012-10-03 深圳光启创新技术有限公司 Meta-material satellite antenna and satellite receiving system
CN102709674B (en) * 2012-04-28 2015-02-04 深圳光启创新技术有限公司 Meta-material satellite antenna and satellite receiving system

Also Published As

Publication number Publication date
JPS5951769B2 (en) 1984-12-15

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