JPH0219642B2 - - Google Patents
Info
- Publication number
- JPH0219642B2 JPH0219642B2 JP60023491A JP2349185A JPH0219642B2 JP H0219642 B2 JPH0219642 B2 JP H0219642B2 JP 60023491 A JP60023491 A JP 60023491A JP 2349185 A JP2349185 A JP 2349185A JP H0219642 B2 JPH0219642 B2 JP H0219642B2
- Authority
- JP
- Japan
- Prior art keywords
- suspended
- strip
- conductors
- dielectric substrate
- suspended line
- 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 - Lifetime
Links
- 239000004020 conductor Substances 0.000 claims description 49
- 239000000758 substrate Substances 0.000 claims description 14
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000006866 deterioration Effects 0.000 description 2
- 230000005684 electric field Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P5/00—Coupling devices of the waveguide type
- H01P5/12—Coupling devices having more than two ports
- H01P5/16—Conjugate devices, i.e. devices having at least one port decoupled from one other port
- H01P5/18—Conjugate devices, i.e. devices having at least one port decoupled from one other port consisting of two coupled guides, e.g. directional couplers
- H01P5/184—Conjugate devices, i.e. devices having at least one port decoupled from one other port consisting of two coupled guides, e.g. directional couplers the guides being strip lines or microstrips
- H01P5/187—Broadside coupled lines
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、UHF帯やマイクロ波帯でよく用
いられるサスペンデツド線路形方向性結合器に関
するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a suspended line type directional coupler that is often used in the UHF band and microwave band.
第４図は従来のサスペンデツド線路形方向性結
合器の内導体を示す概略構成図、第５図は第４図
−線に沿う断面図である。第４，５図におい
て、１ａ，１ｂは第１のサスペンデツド線路１の
ストリツプ導体、２ａ，２ｂは第２サスペンデツ
ド線路２のストリツプ導体、３は誘電体基板、５
は誘電体基板３の両側に配設した外導体、P1〜
P4は端子である。
FIG. 4 is a schematic configuration diagram showing an inner conductor of a conventional suspended line type directional coupler, and FIG. 5 is a sectional view taken along the line shown in FIG. 4. In FIGS. 4 and 5, 1a and 1b are strip conductors of the first suspended line 1, 2a and 2b are strip conductors of the second suspended line 2, 3 is a dielectric substrate, and 5 is a strip conductor of the second suspended line 2.
are outer conductors arranged on both sides of the dielectric substrate 3, P 1 ~
P4 is a terminal.
ストリツプ導体１ａと１ｂ、２ａと２ｂはそれ
ぞれ対をなし、幅広面を対向させて誘電体基板３
の両面に設けられている。また、ストリツプ導体
１ａ，１ｂと２ａ，２ｂは、同一基板上に約1/4
波長の長さだけ近接して平行に配置されている。 The strip conductors 1a and 1b, 2a and 2b each form a pair, and the dielectric substrate 3 is connected with their wide surfaces facing each other.
are provided on both sides. Also, the strip conductors 1a, 1b and 2a, 2b are placed on the same board by approximately 1/4
They are arranged in parallel and close to each other by the length of the wavelength.
次に動作について説明する。第１のサスペンデ
ツド線路１の端子P1に波が導入された場合、ス
トリツプ導体１ａ，１ｂと２ａ，２ｂが近接して
配置されている部分で、上記導入された波の一部
分が第２サスペンデツド線路２に結合する。近接
して配置した部分を約1/4波長にすると、結合し
た波は端子P4に伝播せず、端子P3に取り出され
る。 Next, the operation will be explained. When a wave is introduced into the terminal P1 of the first suspended line 1, a portion of the introduced wave is transferred to the second suspended line at the portion where the strip conductors 1a, 1b and 2a, 2b are arranged close to each other. Combine to 2. When the wavelength of the portions placed close to each other is approximately 1/4, the combined wave does not propagate to terminal P 4 but is extracted to terminal P 3 .
従来のサスペンデツド線路形方向性結合器は以
上のように構成されているので、工作上の制約か
らストリツプ導体１ａ，１ｂと２ａ，２ｂの間隔
Ｓを一定の寸法以下に狭くすることができず、約
−10dB以上の密結合が得られないという問題点
があつた。
Since the conventional suspended line type directional coupler is constructed as described above, it is not possible to narrow the interval S between the strip conductors 1a, 1b and 2a, 2b below a certain dimension due to manufacturing constraints. There was a problem that tight coupling of about -10 dB or more could not be obtained.
この発明は、かかる問題点を解決するためにな
されたもので、−10dB以上の密結合となるサスペ
ンデツド線路形方向性結合器を得ることを目的と
する。 The present invention was made to solve this problem, and an object of the present invention is to obtain a suspended line type directional coupler that provides tight coupling of -10 dB or more.
この発明に係るサスペンデツド線路形方向性結
合器は、誘電体基板の両面でストリツプ導体の幅
を異ならしめ、第１及び第２のサスペンデツド線
路のストリツプ導体の幅広面が対向するように配
置し、上記誘電体両面で対をなすストリツプ導体
を貫通導体で接続したものである。
In the suspended line type directional coupler according to the present invention, the strip conductors have different widths on both sides of the dielectric substrate, and the wide sides of the strip conductors of the first and second suspended lines are arranged to face each other. A pair of strip conductors on both sides of the dielectric are connected by a through conductor.
この発明における二対のストリツプ導体は、そ
の幅広面が誘電体基板をはさんで互いに対向する
ことにより、第１及び第２のサスペンデツド線路
の結合を密にすることができる。
The two pairs of strip conductors in the present invention have their wide surfaces facing each other with the dielectric substrate in between, so that the first and second suspended lines can be tightly coupled.
実施例
第１図、第２図は前記第４，５図と同一部分に
同一符号を付したこの発明の一実施例を示すもの
で、第１図は内導体を示す概略構成図、第２図は
第１図−線に沿う断面図である。第１図にお
いて、４は誘電体基板３を貫通してストリツプ導
体１ａと１ｂあるいは２ａと２ｂを接続する貫通
導体である。Embodiment FIGS. 1 and 2 show an embodiment of the present invention in which the same parts as in FIGS. 4 and 5 are given the same reference numerals. FIG. The figure is a sectional view taken along the line of FIG. In FIG. 1, reference numeral 4 denotes a through conductor that passes through the dielectric substrate 3 and connects the strip conductors 1a and 1b or 2a and 2b.
第１のサスペンデツド線路１の内導体は、第２
のサスペンデツド線路２と平行に配置された部分
において、表面のストリツプ導体１ａの幅が裏面
のストリツプ導体１ｂより広くしてある。又、第
２のサスペンデツド線路２の内導体は、第１のサ
スペンデツド線路１と平行に配置された部分にお
いて、裏面のストリツプ導体２ｂの幅が表面のス
トリツプ導体２ａより広くしてある。 The inner conductor of the first suspended line 1
In the portion arranged parallel to the suspended line 2, the width of the strip conductor 1a on the front surface is made wider than the width of the strip conductor 1b on the back surface. Further, in the inner conductor of the second suspended line 2, the width of the strip conductor 2b on the back side is made wider than the width of the strip conductor 2a on the front side in a portion arranged parallel to the first suspended line 1.
そして、第１のサスペンデツド線路１のストリ
ツプ導体１ａと第２のサスペンデツド線路２のス
トリツプ導体２ｂの幅広面を対向させ約1/4波長
だけ平行に配置している。また、上記第１および
第２のサスペンデツド線路１及び２のおのおのに
対して、２つの貫通導体を約1/4波長の間隔で設
けている。 The wide surfaces of the strip conductor 1a of the first suspended line 1 and the strip conductor 2b of the second suspended line 2 are placed opposite to each other and parallel to each other by about 1/4 wavelength. Furthermore, two through conductors are provided for each of the first and second suspended lines 1 and 2 at an interval of approximately 1/4 wavelength.
この発明のサスペンデツド線路形方向性結合器
は上記の構成であるから、対向する幅向面の効果
によつて第１のおよび第２のサスペンデツド線路
１，２間の静電容量が大きくなる。このため、従
来のストリツプ導体１ａ，１ｂと２ａ，２ｂの間
隔を狭くしたのと同等の効果があり、密結合の方
向性結合器を実現できる。 Since the suspended line type directional coupler of the present invention has the above structure, the capacitance between the first and second suspended lines 1 and 2 is increased due to the effect of the opposing width surfaces. Therefore, the effect is similar to that of narrowing the spacing between the conventional strip conductors 1a, 1b and 2a, 2b, and a tightly coupled directional coupler can be realized.
方向性結合器としての機能は従来のサスペンデ
ツド線路形方向性結合器の場合と同様であり、端
子P1に導入された波は端子P2とP3に取り出され、
端子P4には出播しない。 The function as a directional coupler is similar to that of a conventional suspended line type directional coupler, and the wave introduced to terminal P1 is extracted to terminals P2 and P3 .
It does not appear on terminal P4 .
なお、上記実施例では上記サスペンデツド線路
１，２の非対称性から、通常の動作を行なう第３
図ａの電界分布のモード、つまり、ストリツプ導
体１ａ，１ｂから外導体５に向つて電気力線６が
生ずる他に、第３図ｂの電界分布のモード、つま
り、誘電体基板３を貫通してストリツプ導体１ａ
から、また、外導体５からストリツプ導体１ｂに
電気力線６が生じ、特性を劣化させる可能性を有
する。しかし、上記サスペンデツド線路上に設け
た貫通導体４で、両面のストリツプ導体１ａと１
ｂ、２ａと２ｂをそれぞれ接続して同電位にする
ので、不要モードの励振が抑制されて、特性を劣
化させるような問題は生じない。 Note that in the above embodiment, due to the asymmetry of the suspended lines 1 and 2, the third
In addition to the electric field distribution mode shown in FIG. strip conductor 1a
Also, electric lines of force 6 are generated from the outer conductor 5 to the strip conductor 1b, which may deteriorate the characteristics. However, with the through conductor 4 provided on the suspended line, the strip conductors 1a and 1 on both sides
b, 2a, and 2b are respectively connected to have the same potential, so that the excitation of unnecessary modes is suppressed, and problems such as deterioration of characteristics do not occur.
また、上記実施例では、近接して配置した部分
の長さが約1/4波長の場合について説明したが、
近接した部分の長さが約1/4波長の奇数倍のサス
ペンデツド線路形方向性結合器にも利用できるこ
とはいうまでもない。 Furthermore, in the above embodiment, the case where the length of the closely arranged portions is about 1/4 wavelength was explained.
Needless to say, it can also be used in a suspended line type directional coupler where the length of the adjacent portion is an odd multiple of about 1/4 wavelength.
以上のように、この発明によれば、対をなすス
トリツプ導体の幅を誘電体基板の両面で異ならせ
た２本のサスペンデツド線路を、幅を広くした方
のストリツプ導体の幅広面が対向するように配置
し、かつ、ストリツプ導体対を上記誘電体基板を
貫通する貫通導体で接続するように構成したの
で、不要モードによる特性劣化のない密結合のサ
スペンデツド線路形方向性結合器が簡単な構成で
安価に得られるという効果がある。
As described above, according to the present invention, two suspended lines, each of which has a pair of strip conductors with different widths on both sides of a dielectric substrate, are arranged so that the wider sides of the strip conductor with the wider width face each other. , and the strip conductor pair is connected by a through conductor that passes through the dielectric substrate. Therefore, a tightly coupled suspended line type directional coupler with no characteristic deterioration due to unnecessary modes can be created with a simple structure. It has the advantage of being inexpensive.
第１図はこの発明の一実施例の内導体の形状を
示す概略構成図、第２図は第１図の−線に沿
う断面図、第３図ａ，ｂはこの発明のサスペンデ
ツド線路形方向性結合器の動作を説明するための
図、第４図は従来のサスペンデツド形方向性結合
器の内導体の形状を示す概略構成図、第５図は第
４図の−線に沿う断面図である。
１，２は第１及び第２のサスペンデツド線路、
１ａ，１ｂ，２ａ，２ｂはストリツプ導体、３は
誘電体基板、４は貫通導体。なお、図中、同一符
号は同一または相当部分を示す。
FIG. 1 is a schematic configuration diagram showing the shape of an inner conductor in an embodiment of the present invention, FIG. 2 is a sectional view taken along the - line in FIG. 1, and FIGS. 4 is a schematic configuration diagram showing the shape of the inner conductor of a conventional suspended type directional coupler, and FIG. 5 is a sectional view taken along the line - in FIG. 4. be. 1 and 2 are first and second suspended lines,
1a, 1b, 2a, 2b are strip conductors, 3 is a dielectric substrate, and 4 is a through conductor. In addition, in the figures, the same reference numerals indicate the same or corresponding parts.
Claims (1)
導体を内導体とする第１及び第２のサスペンデツ
ド線路を同一基板上に所定の長さだけ近接して平
行に並べて構成したサスペンデツド線路形方向性
結合器において、上記第１のサスペンデツド線路
は上記誘電体基板の表面に設けたストリツプ導体
の幅を裏面に設けたストリツプ導体の幅より広く
し、上記第２のサスペンデツド線路は上記誘電体
基板の裏面に設けたストリツプ導体の幅を表面に
設けたストリツプ導体の幅より広くするととも
に、上記幅を広くした方の上記第１及び第２のス
トリツプ導体の幅広面が対向するように配置し、
上記第１及び第２のサスペンデツド線路の所定の
位置に該第１及び第２のサスペンデツド線路の両
面のストリツプ導体を、上記誘電体基板を貫通す
る貫通導体によつてそれぞれ接続したことを特徴
とするサスペンデツド線路形方向性結合器。1 Suspended line type directional coupling in which first and second suspended lines, each having a pair of strip conductors provided on both sides of a dielectric substrate as inner conductors, are arranged close to each other by a predetermined length in parallel on the same substrate. In the device, the first suspended line has a strip conductor provided on the front surface of the dielectric substrate whose width is wider than the strip conductor provided on the back surface, and the second suspended line has a strip conductor provided on the back surface of the dielectric substrate. The width of the provided strip conductor is made wider than the width of the strip conductor provided on the surface, and the wide surfaces of the first and second strip conductors having the wider width are arranged so as to face each other,
The strip conductors on both sides of the first and second suspended lines are connected to predetermined positions of the first and second suspended lines, respectively, by through conductors that penetrate the dielectric substrate. Suspended line type directional coupler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60023491A JPS61184901A (en) | 1985-02-12 | 1985-02-12 | Suspended line type directional coupler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60023491A JPS61184901A (en) | 1985-02-12 | 1985-02-12 | Suspended line type directional coupler |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61184901A JPS61184901A (en) | 1986-08-18 |
| JPH0219642B2 true JPH0219642B2 (en) | 1990-05-02 |
Family
ID=12111975
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60023491A Granted JPS61184901A (en) | 1985-02-12 | 1985-02-12 | Suspended line type directional coupler |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61184901A (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0432786Y2 (en) * | 1986-11-15 | 1992-08-06 | ||
| US5012209A (en) * | 1990-01-12 | 1991-04-30 | Raytheon Company | Broadband stripline coupler |
| US5032803A (en) * | 1990-02-02 | 1991-07-16 | American Telephone & Telegraph Company | Directional stripline structure and manufacture |
| DE19858470A1 (en) * | 1998-12-17 | 2000-06-21 | Rohde & Schwarz | Directional coupler |
| US9214899B2 (en) | 2011-06-07 | 2015-12-15 | Telefonaktiebolaget L M Ericsson (Publ) | Power amplifier assembly comprising suspended strip lines |
| CN111902999B (en) | 2018-03-29 | 2022-06-28 | 株式会社村田制作所 | Directional coupler |
-
1985
- 1985-02-12 JP JP60023491A patent/JPS61184901A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61184901A (en) | 1986-08-18 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |