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Nonreciprocal circuit device and communication apparatus using the same

A technology of circuit devices and communication equipment, which is applied to circuits, electrical components, waveguide devices, etc., and can solve problems such as deterioration of interface reflection characteristics

Inactive Publication Date: 2004-07-28
MURATA MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, in the above-mentioned conventional non-reciprocal circuit device, there arises a problem that the reflection characteristic of the interface of the central conductor disposed parallel to one side of the magnet deteriorates.

Method used

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  • Nonreciprocal circuit device and communication apparatus using the same
  • Nonreciprocal circuit device and communication apparatus using the same
  • Nonreciprocal circuit device and communication apparatus using the same

Examples

Experimental program
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Embodiment Construction

[0026] The structure of the nonreciprocal circuit device according to the first embodiment of the present invention will refer to Figures 1 to 4 to describe.

[0027] The nonreciprocal circuit device according to this embodiment has a magnetic assembly 5 formed as a rectangular parallelepiped plate, as figure 1 As shown, where three central conductors 51, 52 and 53 are disposed on a magnet 55, the top and bottom surfaces of the magnet 55 are square. The center conductors 51, 52 and 53 are formed by molding a metal conductor plate such as copper. like figure 2 As shown in the modified figure, the central conductors 51, 52 and 53 are integrally connected to a ground portion 54 constituting a common ground terminal, and protrude from the ground portion 54 to the outside.

[0028] The magnetic assembly 5 has a structure in which the magnet 55 is placed on the common ground portion 54, and all the central conductors 51 to 53 are provided on the top surface of the magnet 55 to ...

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PUM

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Abstract

A nonreciprocal circuit device is provided which has an improved reflection characteristic of the port of the center conductor which is disposed parallel with one side of a magnetic body. In this nonreciprocal circuit device, a magnetic assembly is formed by disposing three center conductors on a magnetic body having a rectangular parallelepiped planar shape. The conductor width of one center conductor which is disposed parallel with one side of the magnetic body is made wider than that of each of the two other center conductors.

Description

technical field [0001] The present invention relates to a non-reciprocal circuit device such as an isolator or a circulator used in a high frequency band such as a microwave band, and also relates to a communication device using the same. Background technique [0002] In recent years, as mobile communication devices have rapidly progressed toward miniaturization, there has been a stronger demand for further reduction in the size of non-reciprocal circuit devices used in these devices. To achieve this size reduction, Japanese Unexamined Patent Application Publication No. 11-97908 has disclosed a non-reciprocal circuit device using a magnet having a rectangular parallelepiped shape. When using such a magnet having the shape of a rectangular parallelepiped, one central conductor is arranged parallel to one side of the magnet, the other two central conductors are arranged obliquely to each side, and all are electrically insulated from each other. The center conductors are arran...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01P1/36H01P1/32H01P1/383H01P1/387
CPCH01P1/387H01P1/32
Inventor 长谷川隆
Owner MURATA MFG CO LTD