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Transmission line

A technology of transmission lines and waveguides, used in circuits, waveguides, electrical components, etc.

Inactive Publication Date: 2019-04-16
THE FUJIKURA CABLE WORKS LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the dielectric substrate constituting the columnar waveguide is formed of a brittle material such as glass, there is a problem in terms of strength

Method used

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Experimental program
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Embodiment 1

[0102] The inventors of the present application actually designed and simulated the transmission line of the above-mentioned first embodiment, and obtained the intensity distribution of a high-frequency signal transmitted through the transmission line, and the reflection characteristics and transmission characteristics of the transmission line. Design parameters of the transmission line 1 for simulation are as follows.

[0103] ·Pillar wall waveguide 10

[0104] Thickness of dielectric substrate 11: 520 [μm]

[0105] Relative permittivity of dielectric substrate 11: 3.82

[0106] Interval between the first column walls 13a, 13b (distance between centers): 1540 [μm]

[0107] The distance between the second column wall 13c and the blind hole 30 (center-to-center distance): 480 [μm]

[0108] Diameter of opening H (isolating disk AP): 340 [μm]

[0109] ·Waveguide 20

[0110] Height inside the tube: 1149[μm]

[0111] Width inside the tube: 2500[μm]

[0112] Distance from the...

Embodiment 2

[0131] In addition, the inventors of the present application actually designed the transmission line of the above-mentioned second embodiment, performed simulations, and obtained the reflection characteristics of the transmission line. Design parameters of the transmission line 1 for simulation are as follows.

[0132] ·Column wall waveguide 60

[0133] Thickness of dielectric substrate 11: 520 [μm]

[0134] Relative permittivity of dielectric substrate 11: 3.82

[0135] Interval between the first column walls 63a, 63b (distance between centers): 1540 [μm]

[0136] The distance between the second column wall 63c and the blind hole 30 (center-to-center distance): 480 [μm]

[0137] Diameter of opening H (isolating disk AP): 340 [μm]

[0138] ·Waveguide 20

[0139] Height inside the tube: 1149[μm]

[0140] Width inside the tube: 2500[μm]

[0141]Distance from the center of conductor post 41 to narrow wall 21e: 985 [μm]

[0142] Outer diameter of conductor post P: 100 [μm]...

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Abstract

A transmission line comprising: a post wall waveguide that has a dielectric substrate, a first conductor layer and a second conductor layer that are mutually facing via the dielectric substrate, and,as the waveguide area thereof, an area surrounded by the first conductor layer and the second conductor layer, said dielectric substrate having a pair of post walls formed therein; a hollow, square waveguide tube having the first conductor layer connected thereto so as to cover an opening formed in a side wall, the interior of the tube connecting to the waveguide area via an opening formed in thefirst conductor layer; a blind via formed in the dielectric substrate such that one end thereof is arranged inside the opening; and a pole member having a column member connected to the one end of theblind via and a support member supporting the column member, said pole member being arranged inside the waveguide tube such that the column member is coaxial with the blind via.

Description

technical field [0001] The present invention relates to transmission lines. [0002] This application claims priority based on Japanese application No. 2016-165770 filed in Japan on August 26, 2016, and the content is cited here. Background technique [0003] Conventionally, waveguides have been used as transmission lines for transmitting high-frequency signals from the microwave band (0.3 to 30 [GHz]) to the millimeter wave band (30 to 300 [GHz]). In addition, in recent years, a post-wall waveguide (PWW: Post-Wall Wave guide) has also been used as a transmission line for transmitting such a high-frequency signal. The pillar wall waveguide is a square waveguide formed by a pair of conductor layers and a pair of pillar walls. The pair of conductor layers are formed on both sides of the dielectric substrate. Conductor posts are arranged in two rows. [0004] The above-mentioned waveguide and column wall waveguide may be used alone or in combination. For example, in a commu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01P5/08H01P3/12
CPCH01P5/082H01P5/103H01P5/024H01P5/087H01P3/121
Inventor 上道雄介
Owner THE FUJIKURA CABLE WORKS LTD
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