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Lumped element non-reciprocal circuit device

A technology of concentrated constants and circuit components, which is applied in the direction of electrical components, circuits, waveguide devices, etc., can solve the problems of no public solution, the degradation of high-frequency characteristics of irreversible circuit components, etc., and achieve the effect of uniform magnetic field distribution

Inactive Publication Date: 2006-04-12
HITACHI METALS LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

It is considered that the inhomogeneity of the magnetic field in such a microwave magnetic body degrades the high-frequency characteristics of the lumped constant type nonreciprocal circuit element, so it is not preferable.
Attention has been paid to such existing problems represented by Patent Document 1 and Patent Document 2, but no document disclosing a solution can be found

Method used

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  • Lumped element non-reciprocal circuit device
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  • Lumped element non-reciprocal circuit device

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Embodiment Construction

[0021] Embodiments of the present invention will be described below with reference to the drawings.

[0022] figure 2 It is an exploded perspective view of a lumped constant type non-reciprocal circuit element also used in the present invention, figure 1 It is a schematic diagram of a vertical cross-section of A-A' including the lumped constant type nonreciprocal circuit element of the first embodiment for explaining the present invention.

[0023] 1 in the figure is a metal shell. Since it also serves as a yoke for forming a closed magnetic circuit, it is mainly made of a metal with strong magnetic properties such as iron. In order to reduce the loss caused by high-frequency eddy currents, it is usually electroplated with a good conductor such as silver. , 5 is a magnetic body for microwaves, 9 is a permanent magnet for applying a static magnetic field to the magnetic body 5 for microwaves, 6a, 6b are center electrodes, and are non-magnetic bodies.

[0024] Here, in the pr...

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Abstract

Provided is a lumped constant type non-reciprocal circuit device comprising a plurality of center electrodes; a microwave magnetic body; a permanent magnet; and a metal case that serves as a magnetic yoke, wherein the center electrode is disposed on a main surface of the microwave magnetic body, the microwave magnetic body has a side surface perpendicular to the main surface, and a shortest distance between the side surface of the microwave magnetic body and the metal case is set to be equal to or larger than a thickness of the microwave magnetic body and equal to or smaller than 2.3 times of the thickness of the microwave magnetic material.

Description

technical field [0001] The present invention relates to a lumped constant type non-reciprocal circuit element used in high-frequency wireless communication devices such as mobile phones. Background technique [0002] In the market of portable wireless communication equipment represented by mobile phones, miniaturization and low power consumption are increasingly required, and the same performance is inevitably required for components used in wireless communication equipment. It is no exception even in lumped constant type nonreciprocal circuit elements used in high-frequency circuits such as wireless communication equipment. A lumped constant type nonreciprocal circuit element is an element that does not consume power, but the power efficiency is lowered due to the loss that occurs when a signal passes through, so it is required to reduce the loss. [0003] figure 2 This is an exploded view showing the configuration of a lumped constant type nonreciprocal circuit element c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01P1/32
CPCH01P1/387
Inventor 杉山雄太三上秀人佐野博久
Owner HITACHI METALS LTD
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