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Directional Coupler

A directional coupler, stacking direction technology, applied in waveguide type devices, circuits, connecting devices, etc., can solve problems such as deterioration of isolation characteristics, and achieve the effect of improving isolation characteristics

Active Publication Date: 2020-07-28
TDK CORPARATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, isolation characteristics may deteriorate

Method used

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  • Directional Coupler
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Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0027] [First Embodiment] If figure 1 As shown, a multilayer coupler (directional coupler) 1 includes an input port (input terminal) 2 , an output port (output terminal) 3 , a coupling port 4 , and a terminal port 5 . The multilayer coupler 1 includes: a main line 6 connected between the input port 2 and the output port 3; a first sub-line 7 and a second sub-line 8 electromagnetically coupled to the main line 6; and the phase adjustment circuit 9 between the second secondary line 8.

[0028] Main line 6 has first portion 6A electromagnetically coupled to first sub-line 7 , and second portion 6B electromagnetically coupled to second sub-line 8 . A portion where the first portion 6A is coupled to the first sub-line 7 is referred to as a first coupling portion 10A. A portion where the second portion 6B is coupled to the second sub-line 8 is referred to as a second coupling portion 10B. The first sub-line 7 has a first end portion 7a and a second end portion 7b. The first end ...

no. 2 approach

[0075] [Second Embodiment] Next, a second embodiment will be described. Such as Figure 9 As shown, the multilayer coupler 1A includes an input port (input terminal) 60 , an output port (output terminal) 61 , a coupling port 62 , and a termination port 63 . The multilayer coupler 1A includes a main line 64 connected between the input port 60 and the output port 61 , and a sub line 65 electromagnetically coupled to the main line 64 . A portion coupling the main line 64 and the sub line 65 is referred to as a coupling portion 67 .

[0076] Next, the configuration of the multilayer coupler 1A will be described. The multilayer coupler 1A includes: an element body 20A, a first terminal electrode 21 (refer to figure 2 ), the second terminal electrode 22, the third terminal electrode 23, the fourth terminal electrode 24, the fifth terminal electrode 25, and the sixth terminal electrode 26. Such as Figure 10 As shown, the element body 20A is formed by laminating a plurality of ...

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PUM

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Abstract

The invention provides a directional coupler, which is provided with: a main circuit, an auxiliary circuit electromagnetically coupled with the main circuit, and a first first circuit that is relatively disposed in a position where the main circuit and the auxiliary circuit are clamped in the stacking direction. The ground layer and the second ground layer, the auxiliary ground layer electrically connected to the first ground layer or the second ground layer, the part of the auxiliary ground layer that does not overlap with the main line and the auxiliary line in the stacking direction and is connected to the first ground layer The non-overlapping parts with different distances between them and the distance between the second ground layer are arranged oppositely in the lamination direction, and the distance between the non-overlapping part and the first ground layer and the non-overlapping part and the second ground layer are arranged oppositely. Among the distances between the two ground planes, the longer distance is set as the first distance a, the shorter distance is set as the second distance b, and the third distance between the non-overlapping part and the auxiliary ground plane is set as When it is c, the relationship of a>c≧b is satisfied.

Description

technical field [0001] This invention relates to directional couplers. Background technique [0002] As a conventional directional coupler, for example, a directional coupler described in Patent Document 1 (JP-A-2013-5076) is known. The directional coupler described in Patent Document 1 includes first to fourth terminals, a main line connected between the first terminal and the second terminal, and a first sub line connected to the third terminal and electromagnetically coupled to the main line. , a second sub-line connected to the fourth terminal and electromagnetically coupled to the main line, a phase converter connected between the first sub-line and the second sub-line and generating a phase deviation relative to the passing signal. In the directional coupler, the main line, the first sub-line, and the second sub-line are arranged between a pair of ground layers connected to the ground. [0003] Like the conventional directional coupler, the main line and the auxiliar...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01P5/18
CPCH01P5/18H01P5/187H01P5/184
Inventor 后藤哲三
Owner TDK CORPARATION