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Non-reversible circuit element and communication equipment thereof

A technology of circuit components and magnetic components, applied in the direction of electrical components, circuits, waveguide-type devices, etc., can solve problems such as short circuits

Inactive Publication Date: 2005-02-09
ALPS ALPINE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Assuming that the resin in the above-mentioned hole part falls off during the reflow operation, and the molten solder enters the inside of the hole during the reflow soldering, there is a risk of causing a short circuit.

Method used

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  • Non-reversible circuit element and communication equipment thereof
  • Non-reversible circuit element and communication equipment thereof
  • Non-reversible circuit element and communication equipment thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0038] Embodiments of the present invention will be described below with reference to the drawings. figure 1 A perspective view showing the unidirectional waveguide of this embodiment. figure 2 An exploded perspective view showing this unidirectional waveguide.

[0039] figure 1 and figure 2 The shown unidirectional waveguide (non-reciprocal circuit element) 1 has a structure in which a magnetic assembly 10 and a sheet-shaped permanent magnet, etc. Element 16. That is, the magnetic assembly 10 and the permanent magnet (magnetic element) 16 are stacked on the base 22a (one inner surface of the housing) of the lower yoke, and the upper yoke 21 is placed above them. One side size of above-mentioned casing 20 (for example in figure 1 In the casing 20 which is approximately square in plan view, the size of one side indicated by L) is set to be 3.5 mm or less.

[0040] Next, if figure 2 As shown, plate capacitors (capacitive elements) 24 , 25 , and 26 and a resistive eleme...

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Abstract

Provided is an isolator adopting even a structure of directly attaching a resistive element to a metallic yoke that can avoid the strength of the yoke from being decreased, uniformize the action of a bias magnetic field onto the yoke, and improve a connection state of terminals or an insulating state of the terminals from other components. The isolator (nonreciprocal circuit element) is provided with: a magnetic assembly; a magnetic member; an enclosure for housing them; input output terminals; and the resistive element 27 connected to one end of a center conductor and located on one inner face side of the enclosure. Further, the enclosure comprises a lower yoke 22 and an upper yoke, which are made of a metallic plate, the resistive element 27 is formed to include first and second terminals 27a, 27b, the first terminal 27a is placed on the lower yoke inner face via an insulating layer 30, a step difference 29 is formed at a part of the lower yoke inner face located at a side of the second terminal, and the second terminal 27b is connected to the lower yoke via the step difference 29.

Description

technical field [0001] The invention relates to a non-reciprocal circuit element and communication equipment which can be miniaturized. Background technique [0002] Belonging to a kind of non-reciprocal circuit element, that is, the concentrated constant type unidirectional waveguide is a high-frequency component that has the function of passing the signal in the transmission direction without loss and preventing the signal from passing in the reverse direction. It is used in portable phones Transmitting circuit of mobile communication equipment. Such a unidirectional waveguide is configured, for example, by housing a magnetic assembly formed by attaching a central conductor to the outer peripheral portion of a sheet-shaped magnetic body and a permanent magnet for biasing in a metal box-shaped housing. . The housing is usually formed by integrally forming an upper yoke made of a ferromagnetic material such as soft iron and a lower yoke. In addition, in such a unidirectio...

Claims

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Application Information

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IPC IPC(8): H01P1/36
Inventor 大西人司境晃
Owner ALPS ALPINE CO LTD
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