Title:
IRREVERSIBLE CIRCUIT ELEMENT
Document Type and Number:
WIPO Patent Application WO/2014/115595
Kind Code:
A1
Abstract:
The present invention obtains good isolation characteristics across a wide bandwidth, and allows adjustment of impedance. An irreversible circuit element provided with a first center electrode (35) and a second center electrode (36) that are disposed intersecting in a mutually insulated state with a ferrite (32) to which a direct-current magnetic field is applied by a permanent magnet. The first center electrode (35) is connected at one end to an input port (P1), and at the other end to an output port (P2). The second center electrode (36) is connected at one end to the port (P2) or the port (P1), and at the other end to a ground. A capacitor (C1) is connected between the port (P1) and the port (P2), and a capacitor (C2) is connected between the port (P2) and the ground. A resistor (R) is connected between the port (P1) and the port (P2). A capacitor (C3) and an inductor (L3) are connected serially to the resistor (R). A capacitor (Cg) and an inductor (Lg) are connected serially between the other end of the second center electrode (36) and the ground. A capacitor (Ca) is connected between the port (P1) and the ground. At least one of the capacitor (C2) and the capacitor (Ca) has variable capacitance.
Inventors:
TAGUCHI YOSHINORI (JP)
Application Number:
PCT/JP2014/050417
Publication Date:
July 31, 2014
Filing Date:
January 14, 2014
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
H01P1/36; H01P5/04
Foreign References:
| JP4155342B1 | 2008-09-24 | |||
| JP2011055222A | 2011-03-17 | |||
| JPS5017949A | 1975-02-25 | |||
| JP2008085981A | 2008-04-10 | |||
| JP2006033482A | 2006-02-02 |
Attorney, Agent or Firm:
PROFIC PC (JP)
Patent business corporation pro フィック patent firm (JP)
Patent business corporation pro フィック patent firm (JP)
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