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Method of manufacturing directional coupler

A technology of a directional coupler and a manufacturing method, which is applied in the directions of waveguide type devices, printed circuits connected with non-printed electrical components, circuit optical components, etc., can solve problems such as deterioration and inability to meet the directionality of directional couplers

Active Publication Date: 2018-06-05
KK TOSHIBA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in this method, there is a problem that the line length of λ / 4 cannot be satisfied and the directivity of the directional coupler deteriorates.

Method used

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  • Method of manufacturing directional coupler
  • Method of manufacturing directional coupler
  • Method of manufacturing directional coupler

Examples

Experimental program
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Embodiment Construction

[0013] Hereinafter, a method of manufacturing the directional coupler according to the embodiment will be described with reference to the drawings.

[0014] figure 1 It is a figure which shows an example of the schematic structure of the directional coupler 1 of this embodiment.

[0015] The directional coupler 1 is a so-called broadside coupling type directional coupler.

[0016] Such as figure 1 As shown, a directional coupler 1 includes a main line 2 , an outer conductor 3 , a sub line 4 and a substrate 5 .

[0017] The main line 2 is formed of a metal plate. For example, the main line 2 is a strip line formed of a copper plate.

[0018] The outer conductor 3 having the main line 2 as a central conductor is formed with a slit 11 . Furthermore, the sub-line 4 is provided to face the upper part of the slit 11, and is arrange|positioned on the surface parallel to the slit 11. As shown in FIG. In addition, the main line 2 has an input port Pin and an output port Pout. Th...

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PUM

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Abstract

The invention provides a method of manufacturing a directional coupler, and the manufacturing method can improve the directionality. A method of manufacturing a broadside-coupled directional coupler including a main line and a sub line which are broadside-coupled to each other is provided. The method includes at least two adjustment processes. A line width of a coupled line part of the sub line ona first surface of a dielectric substrate is adjusted wherein the dielectric substrate having a second surface being opposite to the first surface, and the second surface has a ground plane. A position of a boundary portion where the ground plane and the coupled line are in contact with each other is adjusted.

Description

technical field [0001] Embodiments of the present invention relate to a method of manufacturing a directional coupler. Background technique [0002] In general, for a directional coupler including a main line and a sub line, it is known that directivity is best when the length of the coupled line of the sub line (hereinafter referred to as "line length") is set to λ(wavelength) / 4. However, in the UHF band, since the value of λ / 4 becomes larger, the line length of the coupling line becomes longer. As a result, the circuit size of the directional coupler increases. Therefore, in order to downsize the circuit of the directional coupler, a method of using a coupling line whose line length is shorter than λ / 4 is considered. However, in this method, there is a problem that the line length of λ / 4 cannot be satisfied and the directivity of the directional coupler deteriorates. [0003] prior art literature [0004] Patent Document 1: Japanese Patent Laid-Open No. 2013-192084 C...

Claims

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Application Information

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IPC IPC(8): H01P11/00H01P5/18
CPCH01P5/18H01P11/00H01P5/107H01P5/187H05K1/0274H05K1/18
Inventor 大朏俊弥
Owner KK TOSHIBA