JPH0218563Y2 - - Google Patents

Description

【考案の詳細な説明】 〔考案の技術分野〕 この考案は可とう伝送線路の改良に関するもの
である。[Detailed Description of the Invention] [Technical Field of the Invention] This invention relates to improvement of flexible transmission lines.

〔従来技術〕[Prior art]

第２図は従来の可とう伝送線路を示す図であ
り、図において１は金属箔、２は誘電体基板、３
は箱型ストリツプ線路の外導体、４は箱型ストリ
ツプ線路の中心導体、５は薄い金属を波形状に加
工した外導体、６は保持ワイヤである。上記従来
の可とう伝送線路は保持ワイヤ６により支持され
た上下の波形状の外導体５の間に金属箔１を被着
形成した誘電体基板２が通してある可とう性を有
するものであり、又上記伝送線路の両端に箱型ス
トリツプ線路を接続した構造となつている。 Figure 2 is a diagram showing a conventional flexible transmission line, in which 1 is a metal foil, 2 is a dielectric substrate, and 3 is a diagram showing a conventional flexible transmission line.
4 is the outer conductor of the box-shaped strip line, 4 is the center conductor of the box-shaped strip line, 5 is an outer conductor made of thin metal processed into a corrugated shape, and 6 is a holding wire. The above-mentioned conventional flexible transmission line has flexibility in that a dielectric substrate 2 having a metal foil 1 coated thereon is passed between upper and lower corrugated outer conductors 5 supported by holding wires 6. , and has a structure in which box-shaped strip lines are connected to both ends of the transmission line.

従来の可とう伝送線路は上記のように構成さ
れ、可とう部が可とう性を有する誘電体基板２と
保持ワイヤ６により支持された可とう性及ぴ収縮
性を有する波形状の外導体５により構成されてい
るため誘電体基板２に対して上下の波形状の外導
体５の方向に充分な可とう性を有している。 A conventional flexible transmission line is constructed as described above, and includes a dielectric substrate 2 whose flexible portion is flexible, and a wave-shaped outer conductor 5 which is flexible and contractible and supported by a holding wire 6. Since it is constructed of , it has sufficient flexibility in the direction of the wave-shaped outer conductor 5 above and below with respect to the dielectric substrate 2.

上記のような従来の可とう伝送線路では、薄い
金属を波形状に加工し、誘電体基板２を上下の波
形状の外導体５の中央に位置するように固定し、
保持ワイヤ６と波形状の外導体５を溶接し組み立
てなければならないため、構造が複雑で精密加工
を必要とし、高価であるという問題点があつた。 In the conventional flexible transmission line as described above, a thin metal is processed into a corrugated shape, and the dielectric substrate 2 is fixed so as to be located at the center of the upper and lower corrugated outer conductors 5.
Since the holding wire 6 and the corrugated outer conductor 5 must be assembled by welding, the structure is complicated, requires precision machining, and is expensive.

〔考案の概要〕[Summary of the idea]

この考案は、このような欠点を改善する目的で
なされたもので、薄い可とう性を有する誘電体基
板に金属箔を平行に被着形成した平行線路を箱型
ストリツプ線路の中心導体と外導体に対し分割同
軸バランを用いて接続し両者の特性インピーダン
スをそろえることにより、波形状の外導体を有し
ない可とう伝送線路を提案するものである。 This idea was made with the aim of improving these shortcomings. Parallel lines, in which metal foil was adhered parallel to a thin flexible dielectric substrate, were used as the center conductor and outer conductor of a box-shaped strip line. By connecting them using a split coaxial balun and matching the characteristic impedance of both, we propose a flexible transmission line that does not have a corrugated outer conductor.

〔考案の実施例〕[Example of idea]

第１図はこの考案の一実施例を示す図である。
図において１ａ，１ｂは金属箔、２は誘電体基
板、３は箱型ストリツプ線路の外導体、４は箱型
ストリツプ線路の中心導体、７は箱型ストリツプ
線路の外導体３に設けたスロツトである。この考
案の可とう伝送線路は薄い可とう性を有する誘電
体基板２に金属箔１ａ，１ｂを平行に被着形成し
た平行線路を有し、上記平行線路と箱型ストリツ
プ線路の特性インピーダンスをそろえて、平行線
路を箱型ストリツプ線路の中心導体４と外導体３
に対し分割同軸バランを用いて接続した構造であ
る。平行線路と箱型ストリツプ線路の変換部の分
割同軸バランは、箱型ストリツプ線路の外導体３
の終端部分に充分細いスロツト７を設け、箱型ス
トリツプ線路の外導体３を２分割し、箱型ストリ
ツプ線路の２分割した中心導体４の一方の部分４
ａを、２分割した外導体３の一方の部分３ａに短
絡し、２分割した中心導体４の他方の部分４ｂ
を、平行線路を形成する一方の金属箔１ａに接続
し、平行線路の他方の金属箔１ｂを、２分割した
外導体３の他方の部分３ｂに接続する。上記スロ
ツト７の長さは1/4波長に設定されている。本実
施例の場合、２分割した中心導体４の一方の部分
４ａは、平行線路の延長方向に対し直角の方向に
誘電体基板２上に延長され、その先端部に、２分
割した外導体３の一方の部分３ａの板状縁部３
a′が圧着または半田溶接等によつて接続される。
２分割した中心導体４の他方部分４ｂと平行線路
の一方の金属箔１ａとは、誘電体基板２上におい
て一体に連続して形成された態様で接続され、ま
た分割した外導体３の他方の部分３ｂと平行線路
の他方の金属箔１ｂとは、誘電体基板２上に形成
された金属箔１ｂの延長部１b′上に、２分割した
外導体３の他方の部分３ｂの板状縁部３b′が圧着
または半田溶接等によつて接続されている。第３
図は、このようにして構成された分割同軸バラン
の等価回路を示す。 FIG. 1 is a diagram showing an embodiment of this invention.
In the figure, 1a and 1b are metal foils, 2 is a dielectric substrate, 3 is the outer conductor of the box-shaped strip line, 4 is the center conductor of the box-shaped strip line, and 7 is the slot provided in the outer conductor 3 of the box-shaped strip line. be. The flexible transmission line of this invention has parallel lines in which metal foils 1a and 1b are adhered in parallel to a thin flexible dielectric substrate 2, and the characteristic impedances of the parallel lines and the box-shaped strip line are aligned. Then, connect the parallel lines to the center conductor 4 and outer conductor 3 of the box-shaped strip line.
The structure is connected using a split coaxial balun. The split coaxial balun of the parallel line and box-shaped strip line converter is connected to the outer conductor 3 of the box-shaped strip line.
A sufficiently thin slot 7 is provided at the terminal end of the line, the outer conductor 3 of the box-shaped strip line is divided into two parts, and one part 4 of the center conductor 4 of the box-shaped strip line is divided into two parts.
a to one part 3a of the outer conductor 3 divided into two parts, and the other part 4b of the central conductor 4 divided into two parts.
is connected to one metal foil 1a forming a parallel line, and the other metal foil 1b of the parallel line is connected to the other portion 3b of the outer conductor 3 divided into two. The length of the slot 7 is set to 1/4 wavelength. In the case of this embodiment, one portion 4a of the center conductor 4 divided into two is extended on the dielectric substrate 2 in a direction perpendicular to the direction in which the parallel lines extend, and the outer conductor 3 divided into two is attached to the tip of the dielectric substrate 2. The plate-shaped edge 3 of one part 3a of
a′ is connected by crimping or solder welding.
The other part 4b of the divided central conductor 4 and the metal foil 1a of one of the parallel lines are connected in such a manner that they are integrally and continuously formed on the dielectric substrate 2, and the other part 4b of the divided outer conductor 3 The other metal foil 1b of the parallel line with the portion 3b is a plate-shaped edge of the other portion 3b of the outer conductor 3 divided into two, on the extension 1b' of the metal foil 1b formed on the dielectric substrate 2. 3b' are connected by crimping or solder welding. Third
The figure shows an equivalent circuit of the split coaxial balun constructed in this manner.

上記のように構成された可とう伝送線路におい
て可とう性を有する誘電体基板２に金属箔１ａ，
１ｂを被着形成した基板を用いるため、充分な可
とう性が得られ、可とう部に平行線路を用いるこ
とにより波形状の外導体５が不要となる。 In the flexible transmission line configured as described above, the metal foil 1a is placed on the dielectric substrate 2 having flexibility.
Since the substrate 1b is deposited on the substrate, sufficient flexibility can be obtained, and the use of parallel lines in the flexible portion eliminates the need for the corrugated outer conductor 5.

〔考案の効果〕[Effect of idea]

この考案は以上説明した通り、可とう部に平行
線路を用いることにより、波形状の外導体を除去
することができ、波形状の外導体と保持ワイヤの
溶接及び組み立てが不要となるため、可とう部の
構造が簡単になり、価格が低減し、重量が軽減で
きるという効果がある。 As explained above, by using parallel lines in the flexible part, this idea makes it possible to remove the corrugated outer conductor, eliminating the need for welding and assembling the corrugated outer conductor and the holding wire. This has the effect of simplifying the structure of the rim, reducing cost, and reducing weight.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図はこの考案の一実施例を示す図、第２図
は従来の可とう伝送線路を示す図、第３図は本考
案に用いられる1/4波長スリツト付き分割同軸バ
ランの等価回路図である。 図において、１ａ，１ｂは金属箔、２は誘電体
基板、３は箱型ストリツプ線路の外導体、４は箱
型ストリツプ線路の中心導体、６は保持ワイヤ、
７はスロツトをそれぞれ示す。 Figure 1 is a diagram showing an embodiment of this invention, Figure 2 is a diagram showing a conventional flexible transmission line, and Figure 3 is an equivalent circuit diagram of a split coaxial balun with 1/4 wavelength slit used in this invention. It is. In the figure, 1a and 1b are metal foils, 2 is a dielectric substrate, 3 is an outer conductor of the box-shaped strip line, 4 is the center conductor of the box-shaped strip line, 6 is a holding wire,
7 respectively indicate slots.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 中心導体と外導体とを備えたストリツプ線路を
両端に有する可とう伝送線路において、可とう性
を有する誘電体基板に金属箔を平行に被着形成し
た平行線路を設けるとともに、上記平行線路と上
記ストリツプ線路との変換部において、上記スト
リツプ線路の中心導体および外導体をそれぞれ２
分割し、上記２分割した中心導体の一方の部分を
上記２分割した外導体の一方の部分に接続し、上
記２分割した中心導体の他方の部分を上記平行線
路の一方に接続し、上記２分割した外導体の他方
の部分を上記平行線路の他方に接続して分割同軸
バランを構成し、この分割同軸バランを用いて、
上記ストリツプ線路と上記平行線路とを接続した
ことを特徴とする可とう伝送線路。 In a flexible transmission line having a strip line at both ends with a center conductor and an outer conductor, a parallel line is provided in which metal foil is coated in parallel on a flexible dielectric substrate, and the parallel line and the above At the conversion part with the strip line, the center conductor and outer conductor of the strip line are
one part of said two-divided center conductor is connected to one part of said two-divided outer conductor, the other part of said two-divided center conductor is connected to one of said parallel lines, said two The other part of the divided outer conductor is connected to the other side of the parallel line to form a divided coaxial balun, and using this divided coaxial balun,
A flexible transmission line characterized in that the strip line and the parallel line are connected.