JPS56122510A - Receiving antenna system - Google Patents

Receiving antenna system

Info

Publication number
JPS56122510A
JPS56122510A JP2628980A JP2628980A JPS56122510A JP S56122510 A JPS56122510 A JP S56122510A JP 2628980 A JP2628980 A JP 2628980A JP 2628980 A JP2628980 A JP 2628980A JP S56122510 A JPS56122510 A JP S56122510A
Authority
JP
Japan
Prior art keywords
antenna element
radiation
receiving
circuit
feedback
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
JP2628980A
Other languages
Japanese (ja)
Inventor
Shigeki Takeda
Junichi Shibata
Masashi Shimakata
Yasuhiro Oshime
Shintaro Gomi
Katsuaki Kawamura
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.)
Pioneer Corp
Original Assignee
Pioneer Electronic 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 Pioneer Electronic Corp filed Critical Pioneer Electronic Corp
Priority to JP2628980A priority Critical patent/JPS56122510A/en
Publication of JPS56122510A publication Critical patent/JPS56122510A/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

  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)

Abstract

PURPOSE:To improve a noise factor of the system by placing a radiation antenna element adjacently to the receiving antenna element, and feeding a part of the output by the amplifying circuit of the receiving antenna, to said radiation antenna element, so that the negative feedback can be executed. CONSTITUTION:A loop antenna element 4 for radiation is adjacently arrayed in an almost concentric circle with a loop antenna element 2 for receiving. A part of the output of the amplifying circuit 1 is fed to the antenna element 4 for radiation by the feedback circuit 3. The negative feedback system is constituted of a feedback loop consisting of the feedback circuit 3 and the antenna element 4 for radiation, and a receiving signal by the antenna element 4 for radiation becomes an opppsite phase against that of the antenna element 2 for receiving. The impedance transducer 5 contains a tuning circuit for tuning to the desired frequency of the antenna element 2 for receiving, and also executes both the impedance matching and the noise matching. Moreover, if the amplifying circuit 1 is an unbalanced input, said transducer is used as a balacned-to-unbalanced transducer, as well.
JP2628980A 1980-03-03 1980-03-03 Receiving antenna system Pending JPS56122510A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2628980A JPS56122510A (en) 1980-03-03 1980-03-03 Receiving antenna system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2628980A JPS56122510A (en) 1980-03-03 1980-03-03 Receiving antenna system

Publications (1)

Publication Number Publication Date
JPS56122510A true JPS56122510A (en) 1981-09-26

Family

ID=12189133

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2628980A Pending JPS56122510A (en) 1980-03-03 1980-03-03 Receiving antenna system

Country Status (1)

Country Link
JP (1) JPS56122510A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT396313B (en) * 1990-04-09 1993-08-25 Kopera Adalbert Ing Antenna arrangement
EP2541680A1 (en) * 2011-06-29 2013-01-02 Roke Manor Research Limited Reduced Q low frequency antenna

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT396313B (en) * 1990-04-09 1993-08-25 Kopera Adalbert Ing Antenna arrangement
EP2541680A1 (en) * 2011-06-29 2013-01-02 Roke Manor Research Limited Reduced Q low frequency antenna
GB2492463B (en) * 2011-06-29 2014-05-14 Roke Manor Research Rod antenna circuit with centre tapped coil, differential amplifier and negative feedback
US9234955B2 (en) 2011-06-29 2016-01-12 Roke Manor Research Limited Reduced Q low frequency antenna

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