JPS5776902A - Ferrite antenna device - Google Patents

Ferrite antenna device

Info

Publication number
JPS5776902A
JPS5776902A JP15316780A JP15316780A JPS5776902A JP S5776902 A JPS5776902 A JP S5776902A JP 15316780 A JP15316780 A JP 15316780A JP 15316780 A JP15316780 A JP 15316780A JP S5776902 A JPS5776902 A JP S5776902A
Authority
JP
Japan
Prior art keywords
coupling
ferrite
antenna
circuit
built
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
JP15316780A
Other languages
Japanese (ja)
Inventor
Katsuji Doi
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP15316780A priority Critical patent/JPS5776902A/en
Publication of JPS5776902A publication Critical patent/JPS5776902A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/29—Combinations of different interacting antenna units for giving a desired directional characteristic

Landscapes

  • Variable-Direction Aerials And Aerial Arrays (AREA)

Abstract

PURPOSE:To eliminate the need for electric contacts and to make ease of matching through the adjustment of distance of magnetic coupling, by coupling an external antenna and a built-in antenna through the use of ferrite and mutual magnetic coupling. CONSTITUTION:The coupling between an external antenna 1 and a built-in antenna circuit network 2 is made by a coupling circuit 8 using a ferrite 9 and mutual magnetic coupling. In this case, the effect of the external antenna 1 on a tuning circuit can be made very small by minimizing a part 9b of the outside of the case of the ferrite 9 forming the coupling circuit 8 comparing with a part 9a of the inside of the case of the ferrite 9 forming a built-in antenna circuit network 2.
JP15316780A 1980-10-30 1980-10-30 Ferrite antenna device Pending JPS5776902A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15316780A JPS5776902A (en) 1980-10-30 1980-10-30 Ferrite antenna device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15316780A JPS5776902A (en) 1980-10-30 1980-10-30 Ferrite antenna device

Publications (1)

Publication Number Publication Date
JPS5776902A true JPS5776902A (en) 1982-05-14

Family

ID=15556508

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15316780A Pending JPS5776902A (en) 1980-10-30 1980-10-30 Ferrite antenna device

Country Status (1)

Country Link
JP (1) JPS5776902A (en)

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