Title:
FERROMAGNETIC RESONATOR
Document Type and Number:
Japanese Patent JP3417032
Kind Code:
B2
Abstract:
PURPOSE: To attain quick response by arranging a laminated integrated circuit and a permanent magnet onto either of magnetic poles so as to suppress initial drift of a resonance frequency when revision of the resonance frequency is on request.
CONSTITUTION: A laminated integrated circuit 4 and a permanent magnet 5 are arranged onto either of magnetic poles. Thus, When a control current is supplied to a magnetic coil 3 and self-heat generation takes place in the magnetic coil 3, the heat is conducted to ferromagnetic resonance element in the integrated circuit 4 and the permanent magnet 5 nearly simultaneously and a heat equilibrium reaches in the ferromagnetic resonance element immediately. Thus, the initial drift of the resonance frequency generated till the heat equilibrium is reached due to a temperature difference between the both is negligibly suppressed. When it is required to revise the frequency to a prescribed frequency, even if a control current supplied to the magnetic coil 3 is fluctuated, the resonator is resonated to the prescribed frequency quickly almost without generating initial drift.
Inventors:
Kouichi Matsumura
Application Number:
JP1456094A
Publication Date:
June 16, 2003
Filing Date:
February 08, 1994
Export Citation:
Assignee:
ソニー株式会社
International Classes:
G01R33/20; H01P1/218; H01P3/00; H01P7/00; (IPC1-7): H01P1/218; G01R33/20; H01P3/00; H01P7/00
Domestic Patent References:
| JP340501A |
Attorney, Agent or Firm:
Akira Koike (2 outside)
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