Iron-core material iron-core and transformer for balancing-non-balancing transformer

A balanced transformer and balanced technology, applied in the direction of transformer/inductor magnetic core, broadband transformer, fixed transformer or mutual inductance, etc., can solve problems such as unbalanced transformer, failure to achieve balance, and increase in the frequency of resonance
CN1177337CInactive Publication Date: 2004-11-24TDK CORPARATION
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
TDK CORPARATION
Publication Date
2004-11-24
Estimated Expiration
Not applicable · inactive patent

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Abstract

There is disclosed a BALUN transformer core material which has no magnetic permeability, contains a non-magnetic material and is not influenced by the frequency property of the magnetic permeability even in a high-frequency band. A BALUN transformer core which is obtained by pressing and sintering the BALUN transformer core material has no magnetic permeability and has a high specific resistance. A BALUN transformer which is obtained by applying a winding to the BALUN transformer core is a high-property BALUN transformer which can be operated in a high-frequency band of 600 MHz or more.
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Description

technical field

[0001] The present invention relates to an iron core material for a balun transformer, an iron core for a balun transformer obtained by molding the material and firing the material, and a balun transformer usable in a frequency band above 600 MHz. Background technique

[0002] A balanced-unbalanced transformer (Balance to UnBalance transformer, referred to as BALUN) is a transformation part for smooth connection between an unbalanced circuit and a balanced circuit, and is used in various electronic instruments, such as antenna parts in communication circuits, etc. . Moreover, with the miniaturization and high frequency of electronic equipment in recent years, corresponding parts are also indispensable among the constituent parts of electronic equipment, and balun transformers are no exception.

[0003] A balanced-unbalanced transformer is usually made by winding a two-wire coil (two-wire non-inductive coil) on a ring-shaped or solenoid-shaped balanced-unbala...

Claims

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