JPS57207404A - Active antenna using differential amplifier - Google Patents

Active antenna using differential amplifier

Info

Publication number
JPS57207404A
JPS57207404A JP9268981A JP9268981A JPS57207404A JP S57207404 A JPS57207404 A JP S57207404A JP 9268981 A JP9268981 A JP 9268981A JP 9268981 A JP9268981 A JP 9268981A JP S57207404 A JPS57207404 A JP S57207404A
Authority
JP
Japan
Prior art keywords
differential amplifier
negative feedback
easy
amplifier
antenna
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
JP9268981A
Other languages
Japanese (ja)
Inventor
Yoshizo Shibano
Junichi Ikeda
Toshio Norikane
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.)
Sumitomo Electric Industries Ltd
Original Assignee
Sumitomo Electric Industries 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 Sumitomo Electric Industries Ltd filed Critical Sumitomo Electric Industries Ltd
Priority to JP9268981A priority Critical patent/JPS57207404A/en
Publication of JPS57207404A publication Critical patent/JPS57207404A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q23/00—Antennas with active circuits or circuit elements integrated within them or attached to them

Landscapes

  • Variable-Direction Aerials And Aerial Arrays (AREA)

Abstract

PURPOSE:To easily perform adjustment in the combination of >=2 antennas, by making the synthesis of directivities easy through the connection of an antenna element to an input terminal of a differential amplifier and using the differential amplifier as a negative feedback amplifier. CONSTITUTION:Since antenna elements A1 and A2 are respectively connected to an input terminal of a differential amplifier including transistors TRs 1 and 2, the synthesis can be made easy in synthesizing the directivities through the combination of the antaennas. When a differential amplifier is used for a negative feedback amplifier, the gain of the antenna can be varied freely by varying the amount of negative feedback, allowing to make the adjustment easy in combining >=2 antennas.
JP9268981A 1981-06-15 1981-06-15 Active antenna using differential amplifier Pending JPS57207404A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9268981A JPS57207404A (en) 1981-06-15 1981-06-15 Active antenna using differential amplifier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9268981A JPS57207404A (en) 1981-06-15 1981-06-15 Active antenna using differential amplifier

Publications (1)

Publication Number Publication Date
JPS57207404A true JPS57207404A (en) 1982-12-20

Family

ID=14061452

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9268981A Pending JPS57207404A (en) 1981-06-15 1981-06-15 Active antenna using differential amplifier

Country Status (1)

Country Link
JP (1) JPS57207404A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990001814A1 (en) * 1988-08-12 1990-02-22 Kabushiki Kaisha Enu-Esu Active antenna

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990001814A1 (en) * 1988-08-12 1990-02-22 Kabushiki Kaisha Enu-Esu Active antenna

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