JPS55134546A - Antenna unit for portable timepiece - Google Patents

Antenna unit for portable timepiece

Info

Publication number
JPS55134546A
JPS55134546A JP4158079A JP4158079A JPS55134546A JP S55134546 A JPS55134546 A JP S55134546A JP 4158079 A JP4158079 A JP 4158079A JP 4158079 A JP4158079 A JP 4158079A JP S55134546 A JPS55134546 A JP S55134546A
Authority
JP
Japan
Prior art keywords
antenna unit
coil
coils
permeablity
circuit
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
JP4158079A
Other languages
Japanese (ja)
Inventor
Isao Arai
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.)
Seiko Instruments Inc
Original Assignee
Seiko Instruments Inc
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 Seiko Instruments Inc filed Critical Seiko Instruments Inc
Priority to JP4158079A priority Critical patent/JPS55134546A/en
Publication of JPS55134546A publication Critical patent/JPS55134546A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H2/00—Networks using elements or techniques not provided for in groups H03H3/00 - H03H21/00
    • H03H2/005—Coupling circuits between transmission lines or antennas and transmitters, receivers or amplifiers

Landscapes

  • Circuits Of Receivers In General (AREA)
  • Electric Clocks (AREA)
  • Details Of Aerials (AREA)

Abstract

PURPOSE:To improve the efficiency of an antenna unit by covering the coil of a tuning part with a material of high permeablity while leading an antenna part out of an armored cable. CONSTITUTION:On the primary side, a series resonating circuit is constituted and a signal induced at primary coil 3 is extracted by secondary coil 4 and led to an amplifying circuit. Coils 3 and 4 are completely covered with high-permeablity substance 5 such as ferrite and permalloy to prevent an eddy current from being generated due to the induction of magnetic flux leaking from coils 3 and 4 to armored case 2, a metal conductor, thereby constituting a tuning circuit with a little loss, i.e., with high Q.
JP4158079A 1979-04-06 1979-04-06 Antenna unit for portable timepiece Pending JPS55134546A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4158079A JPS55134546A (en) 1979-04-06 1979-04-06 Antenna unit for portable timepiece

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4158079A JPS55134546A (en) 1979-04-06 1979-04-06 Antenna unit for portable timepiece

Publications (1)

Publication Number Publication Date
JPS55134546A true JPS55134546A (en) 1980-10-20

Family

ID=12612375

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4158079A Pending JPS55134546A (en) 1979-04-06 1979-04-06 Antenna unit for portable timepiece

Country Status (1)

Country Link
JP (1) JPS55134546A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63171015U (en) * 1987-04-24 1988-11-08

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63171015U (en) * 1987-04-24 1988-11-08

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