USPatentGranted

Nonreciprocal circuit device

Granted 12 Sep 2000 · no office action yet

Application
153687
filed 15 Sep 1998
Publication
Not published
not published
Patent· this page
US 6,118,349
granted 12 Sep 2000

Life of the patent

2 dated events
⤢ drag to zoomOct 1998Jan 1999Apr 1999Jul 1999Oct 1999Jan 2000Apr 2000Jul 2000Oct 2000Prosecution
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Abstract

A nonreciprocal circuit device requires less layout space when single-board capacitors are used, and meets demands for a smaller and lighter configuration. An isolator (nonreciprocal circuit device) comprises a ferrite, a permanent magnet applying a direct current magnetic field to the ferrite, a plurality of central electrodes respectively having ports disposed on the ferrite and a single-board matching capacitor with capacitor electrodes formed on both surfaces of a dielectric substrate such that the capacitor electrodes are opposed to each other and sandwich the dielectric substrate. In various embodiments, the permanent magnet and/or the ferrite has a square shape and the capacitor electrodes of the matching capacitors are arranged at an angle of 60 to 90 degrees with respect to a mounting surface and the matching capacitors are disposed so as to surround the sides of the ferrite.

Claims

22 · 10 independent · depth 3
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22 granted claims

Classifications

2 codes
USPC · US Patent Classification
333/1.1333/24.2

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Pendency
2.0 y
728 days filing → grant
Office actions
0
on the grant's record
Examiner
Paul Gensler
art unit —
Citations: 3 back · 2 forward

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