JPS54149450A - Antenna unit - Google Patents

Antenna unit

Info

Publication number
JPS54149450A
JPS54149450A JP5837578A JP5837578A JPS54149450A JP S54149450 A JPS54149450 A JP S54149450A JP 5837578 A JP5837578 A JP 5837578A JP 5837578 A JP5837578 A JP 5837578A JP S54149450 A JPS54149450 A JP S54149450A
Authority
JP
Japan
Prior art keywords
antennas
directivity
practically
constitution
antenna unit
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
JP5837578A
Other languages
Japanese (ja)
Inventor
Masaru Tamura
Taizo Nakamura
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.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP5837578A priority Critical patent/JPS54149450A/en
Publication of JPS54149450A publication Critical patent/JPS54149450A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
    • H01Q3/24—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the orientation by switching energy from one active radiating element to another, e.g. for beam switching

Landscapes

  • Variable-Direction Aerials And Aerial Arrays (AREA)

Abstract

PURPOSE:To make practically an antenna unit of non-directivity to improve sensitivity by gathering plural directive antennas to form a synthetic pattern. CONSTITUTION:Antennas provided in prescribed positions are divided into plural groups by combining them at an interval over three antennas, and they are caused to function as a non-directivity antenna practically by switching successively the output in a prescribed speed after amplifying and detecting respective group units in 2 and 3 respectively. By this constitution, the number of high frequency amplifiers can be reduced, and the trouble dependent upon the interference of adjacent beams of directive antennas can be eliminated practically, so that a wide frequency band can be received with a high sensitivity in non-directivity throughout a desired range.
JP5837578A 1978-05-16 1978-05-16 Antenna unit Pending JPS54149450A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5837578A JPS54149450A (en) 1978-05-16 1978-05-16 Antenna unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5837578A JPS54149450A (en) 1978-05-16 1978-05-16 Antenna unit

Publications (1)

Publication Number Publication Date
JPS54149450A true JPS54149450A (en) 1979-11-22

Family

ID=13082571

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5837578A Pending JPS54149450A (en) 1978-05-16 1978-05-16 Antenna unit

Country Status (1)

Country Link
JP (1) JPS54149450A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62203403A (en) * 1986-03-04 1987-09-08 Kokusai Denshin Denwa Co Ltd <Kdd> Feeding circuit for array antenna
JPH02250503A (en) * 1989-03-24 1990-10-08 Robotetsuku Kenkyusho:Kk Composite antenna
US5075696A (en) * 1988-10-28 1991-12-24 The Marconi Company Limited Direction finding apparatus
JP2015233194A (en) * 2014-06-09 2015-12-24 日本電信電話株式会社 Antenna device and base station device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62203403A (en) * 1986-03-04 1987-09-08 Kokusai Denshin Denwa Co Ltd <Kdd> Feeding circuit for array antenna
US5075696A (en) * 1988-10-28 1991-12-24 The Marconi Company Limited Direction finding apparatus
JPH02250503A (en) * 1989-03-24 1990-10-08 Robotetsuku Kenkyusho:Kk Composite antenna
JP2015233194A (en) * 2014-06-09 2015-12-24 日本電信電話株式会社 Antenna device and base station device

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