JP3260182B2 - Fixed attenuator - Google Patents
Fixed attenuatorInfo
- Publication number
- JP3260182B2 JP3260182B2 JP32580392A JP32580392A JP3260182B2 JP 3260182 B2 JP3260182 B2 JP 3260182B2 JP 32580392 A JP32580392 A JP 32580392A JP 32580392 A JP32580392 A JP 32580392A JP 3260182 B2 JP3260182 B2 JP 3260182B2
- Authority
- JP
- Japan
- Prior art keywords
- strip conductor
- attenuator
- fixed attenuator
- conductor
- strip
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Non-Reversible Transmitting Devices (AREA)
- Waveguides (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は固定減衰器に関し、マイ
クロ波、ミリ波帯の信号処理を行なう集積回路の固定減
衰器に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fixed attenuator, and more particularly, to a fixed attenuator for an integrated circuit for performing microwave and millimeter wave band signal processing.
【０００２】[0002]
【従来の技術】図５は従来のマイクロストリップ線路の
固定減衰器の平面図、図６は従来のコプレーナストリッ
プ線路の固定減衰器の平面図を示す。2. Description of the Related Art FIG. 5 is a plan view of a conventional fixed attenuator of a microstrip line, and FIG. 6 is a plan view of a fixed attenuator of a conventional coplanar strip line.
【０００３】図５において、下面に接地導体を設けた誘
電体基板１０の上面にストリップ導体１１が形成され、
このストリップ導体１１の一部に抵抗体パターン１２が
形成されている。In FIG. 5, a strip conductor 11 is formed on an upper surface of a dielectric substrate 10 provided with a ground conductor on the lower surface.
A resistor pattern 12 is formed on a part of the strip conductor 11.
【０００４】図６において、誘電体基板１５の上面に中
心ストリップ導体１６が形成され、このストリップ導体
１６を挟んで接地導体１７，１８が形成されている。中
心ストリップ導体１６の一部に抵抗体パターン１９が形
成されている。In FIG. 6, a center strip conductor 16 is formed on an upper surface of a dielectric substrate 15, and ground conductors 17 and 18 are formed with the strip conductor 16 interposed therebetween. A resistor pattern 19 is formed on a part of the center strip conductor 16.
【０００５】[0005]
【発明が解決しようとする課題】図５，図６に示した固
定減衰器はストリップ導体１１，１６に抵抗体パターン
１２，１９による不整合面ができるため、伝送信号の周
波数が高くなるほど反射特性が劣化し、帯域の広い固定
減衰器を得ることができないという問題があった。In the fixed attenuator shown in FIGS. 5 and 6, since the strip conductors 11 and 16 have mismatched surfaces due to the resistor patterns 12 and 19, the reflection characteristics become higher as the frequency of the transmission signal becomes higher. However, there is a problem that a fixed attenuator having a wide band cannot be obtained.
【０００６】本発明は上記の点に鑑みなされたもので、
反射特性の劣化がなく使用帯域幅が広い固定減衰器を提
供することを目的とする。[0006] The present invention has been made in view of the above points,
An object of the present invention is to provide a fixed attenuator having a wide use bandwidth without deterioration of reflection characteristics.
【０００７】[0007]
【課題を解決するための手段】本発明の固定減衰器は、
ストリップ導体を挟んで接地導体が形成されたコプレー
ナストリップ線路の固定減衰器において、誘電体基板の
ストリップ導体が設けられた面に、上記ストリップ導体
と離間対向して上記接地導体の一部に抵抗体パターンを
形成して構成する。The fixed attenuator of the present invention comprises:
In the fixed attenuator of the coplanar strip line in which the ground conductor is formed with the strip conductor interposed therebetween, the surface of the dielectric substrate on which the strip conductor is provided is spaced apart from and opposed to the strip conductor. A resistor pattern is partially formed.
【０００８】[0008]
【作用】本発明においては、抵抗体パターンにより漏れ
電界及び漏れ磁界に損失を与えてストリップ導体を伝送
される信号を減衰し、またストリップ導体に不整合面が
形成されないため、反射特性の劣化がなく広帯域に使用
できる。In the present invention, the loss of the leaked electric field and the leaked magnetic field by the resistor pattern attenuates the signal transmitted through the strip conductor, and the mismatching surface is not formed on the strip conductor. And can be used in a wide band.
【０００９】[0009]
【実施例】図１，図２夫々はマイクロストリップ線路の
固定減衰器の一例の斜視図、断面図を示す。EXAMPLES 1, 2 respectively show a perspective view of an example of a fixed attenuator microstrip trip line, a cross-sectional view.
【００１０】図１において、誘電体基板２０の下面には
全面に接地導体２１が設けられ、また誘電体基板２０の
上面２０ａにはストリップ導体２２が形成されている。
また上面２０ａにはストリップ導体２２の両側に帯状の
抵抗体パターン２４，２５が離間対向して形成されてい
る。抵抗体パターン２４，２５夫々の長さはａ，幅は
ｂ，ストリップ導体２２との離間距離はｃとされてい
る。In FIG. 1, a ground conductor 21 is provided on the entire lower surface of a dielectric substrate 20, and a strip conductor 22 is formed on an upper surface 20a of the dielectric substrate 20.
On the upper surface 20a, strip-shaped resistor patterns 24 and 25 are formed on both sides of the strip conductor 22 so as to face each other. Each of the resistor patterns 24 and 25 has a length a, a width b, and a distance c from the strip conductor 22.
【００１１】上記の接地導体２１，ストリップ導体２２
は誘電体基板２０の表面に窒化タンタル膜をスパッタリ
ングし、その上に金を蒸着し、更に金メッキを行なって
形成する。抵抗体パターン２４，２５については窒化タ
ンタル膜をスパッタリングしてホトエッチング等にて形
成する。The above-mentioned ground conductor 21 and strip conductor 22
Is formed by sputtering a tantalum nitride film on the surface of the dielectric substrate 20, depositing gold thereon, and further performing gold plating. The resistor patterns 24 and 25 are formed by sputtering a tantalum nitride film and performing photoetching or the like.
【００１２】この例では図２に実線で示す電界及び破線
で示す磁界のうち漏れ電界及び漏れ電界が抵抗体パター
ン２４，２５で損失を与えられるため、ストリップ導体
２２の伝送信号が減衰される。この場合抵抗体パターン
２４，２５夫々の長さａ又は幅ｂを大きくすれば減衰量
が大きくなり、離間距離ｃを小さくすれば減衰量が大き
くなる。In this example , since the leakage electric field and the leakage electric field of the electric field shown by the solid line and the magnetic field shown by the broken line in FIG. 2 are given a loss by the resistor patterns 24 and 25, the transmission signal of the strip conductor 22 is attenuated. In this case, if the length a or the width b of each of the resistor patterns 24 and 25 is increased, the attenuation increases, and if the separation distance c is reduced, the attenuation increases.
【００１３】また、ストリップ線路２２内に抵抗体パタ
ーンが設けられておらず、不整合面が形成されないた
め、反射特性の劣化がほとんどなく、広帯域の固定減衰
器を構成できる。Further, since the resistor pattern is not provided in the strip line 22 and no mismatching surface is formed, the reflection characteristic is hardly deteriorated, and a wide band fixed attenuator can be constructed.
【００１４】なお、抵抗体パターン２４，２５のいずれ
か一方を形成するだけでも同様に減衰器を構成できる。
更に図３に示す如くストリップ導体２２の湾曲部にもこ
れと並列に抵抗体パターン２４，２５を形成して減衰器
を構成することが可能である。It should be noted that an attenuator can be similarly formed by forming only one of the resistor patterns 24 and 25.
Further, as shown in FIG. 3, it is possible to form an attenuator by forming resistor patterns 24 and 25 in parallel with the curved portion of the strip conductor 22 as well.
【００１５】図４は本発明のコプレーナストリップ線路
の固定減衰器の一実施例の断面図を示す。FIG. 4 is a sectional view showing an embodiment of a fixed attenuator for a coplanar strip line according to the present invention.
【００１６】同図中、誘電体基板３０の上面３０ａに中
心ストリップ導体３１が形成され、このストリップ導体
３１を挟んで接地導体３２，３３が形成されている。更
に中心ストリップ導体３１と接地導体３２，３３の間に
抵抗体パターン３４，３５夫々が形成されている。In FIG. 1, a central strip conductor 31 is formed on an upper surface 30a of a dielectric substrate 30, and ground conductors 32 and 33 are formed with the strip conductor 31 interposed therebetween. Further, resistor patterns 34 and 35 are formed between the center strip conductor 31 and the ground conductors 32 and 33, respectively.
【００１７】この実施例でも図中実線で示す電界のうち
漏れ電界及び漏れ磁界が抵抗体パターン３４，３５で損
失し伝送信号が減衰される。また、中心ストリップ導体
３１に不整合面が形成されないため、反射特性の劣化が
ほとんどなく広帯域の固体減衰器を構成できることは図
１，図２の実施例と同一である。Also in this embodiment, the leaked electric field and the leaked magnetic field among the electric fields indicated by solid lines in the figure are lost by the resistor patterns 34 and 35, and the transmission signal is attenuated. Also, since no mismatching surface is formed on the center strip conductor 31, a wideband solid-state attenuator can be constructed with almost no deterioration in reflection characteristics, as in the embodiment of FIGS.
【００１８】[0018]
【発明の効果】上述の如く、本発明の固定減衰器によれ
ば、信号が伝送されるストリップ導体に不整合面の形成
がなく、反射特性の劣化がなく使用帯域幅が広くなり、
実用上きわめて有用である。As described above, according to the fixed attenuator of the present invention, there is no mismatched surface formed on the strip conductor through which a signal is transmitted, the reflection characteristic is not deteriorated, and the usable bandwidth is widened.
Very useful in practice.
【図１】マイクロストリップ線路の減衰器の平面図であ
る。FIG. 1 is a plan view of a microstrip line attenuator.
【図２】マイクロストリップ線路の減衰器の断面図であ
る。FIG. 2 is a sectional view of a microstrip line attenuator.
【図３】マイクロストリップ線路の減衰器の平面図であ
る。FIG. 3 is a plan view of a microstrip line attenuator.
【図４】本発明の減衰器の断面図である。FIG. 4 is a cross-sectional view of the attenuator of the present invention.
【図５】従来の減衰器の平面図である。FIG. 5 is a plan view of a conventional attenuator.
【図６】従来の減衰器の平面図である。FIG. 6 is a plan view of a conventional attenuator.
２０，３０ 誘電体基板 ２１，３２，３３ 接地導体 ２２ ストリップ導体 ２４，２５，３４，３５ 抵抗体パターン ３１ 中心ストリップ導体 20, 30 Dielectric substrate 21, 32, 33 Ground conductor 22 Strip conductor 24, 25, 34, 35 Resistor pattern 31 Center strip conductor
───────────────────────────────────────────────────── フロントページの続き (72)発明者 小池 章一 神奈川県川崎市中原区上小田中1015番地 富士通株式会社内 (72)発明者 谷邉 範夫 神奈川県川崎市中原区上小田中1015番地 富士通株式会社内 (56)参考文献 実開 昭63−149604（ＪＰ，Ｕ) 実公 昭53−33478（ＪＰ，Ｙ２) (58)調査した分野(Int.Cl.7，ＤＢ名) H01P 1/22 H01P 3/02 H01P 3/08 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Shoichi Koike 1015 Uedanaka, Nakahara-ku, Kawasaki City, Kanagawa Prefecture Inside Fujitsu Co., Ltd. (56) References JP-A-63-149604 (JP, U) JP-A-53-33478 (JP, Y2) (58) Fields investigated (Int. Cl. 7 , DB name) H01P 1/22 H01P 3 / 02 H01P 3/08
Claims (1)
体（３２，３３）が形成されたコプレーナストリップ線
路の固定減衰器において、 誘電体基板（３０）のストリップ導体（３１）が設けら
れた面に、上記ストリップ導体と離間対向して上記接地
導体（３２，３３）の一部に抵抗体パターン（３４，３
５）を形成して構成したことを特徴とする固定減衰器。1. A grounding conductor across a strip conductor (31).
In the fixed attenuator of the coplanar stripline having the bodies (32, 33) formed, the ground on the surface of the dielectric substrate ( 30 ) on which the strip conductor ( 31 ) is provided is spaced apart from the strip conductor.
A resistor pattern ( 34 , 3 ) is provided on a part of the conductor (32, 33).
5) A fixed attenuator characterized in that it is formed by forming (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32580392A JP3260182B2 (en) | 1992-12-04 | 1992-12-04 | Fixed attenuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32580392A JP3260182B2 (en) | 1992-12-04 | 1992-12-04 | Fixed attenuator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06177610A JPH06177610A (en) | 1994-06-24 |
| JP3260182B2 true JP3260182B2 (en) | 2002-02-25 |
Family
ID=18180773
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP32580392A Expired - Fee Related JP3260182B2 (en) | 1992-12-04 | 1992-12-04 | Fixed attenuator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3260182B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19900624C1 (en) * | 1999-01-11 | 2000-07-06 | Bosch Gmbh Robert | Adjustable attenuator |
| CN108550969A (en) * | 2018-05-25 | 2018-09-18 | 深圳市深大唯同科技有限公司 | A kind of tunable dielectric integrated RF transmission line, coupler and feeding network |
-
1992
- 1992-12-04 JP JP32580392A patent/JP3260182B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06177610A (en) | 1994-06-24 |
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