JPH11205002A - Phase shifter - Google Patents
Phase shifterInfo
- Publication number
- JPH11205002A JPH11205002A JP558798A JP558798A JPH11205002A JP H11205002 A JPH11205002 A JP H11205002A JP 558798 A JP558798 A JP 558798A JP 558798 A JP558798 A JP 558798A JP H11205002 A JPH11205002 A JP H11205002A
- Authority
- JP
- Japan
- Prior art keywords
- dielectric
- dielectric plate
- line
- phase shifter
- amount
- 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.)
- Pending
Links
Landscapes
- Waveguide Switches, Polarizers, And Phase Shifters (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は移動体通信用基地
局アンテナの給電回路などに用いられる移相器に関する
ものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a phase shifter used for a power supply circuit of a base station antenna for mobile communication.
【０００２】[0002]
【従来の技術】移動体通信用基地局アンテナは基地局の
サービスエリアを変更するために、アンテナがもっとも
電波を強く放射する主ビームの水平方向からの角度（以
下チルト角という）を変更することがある。チルト角を
変更する方法としては機械的にアンテナを傾ける機械的
チルト角可変や、アンテナをいくつかのサブアレーに分
割し、各サブアレーの励振位相を変える電気的チルト角
可変の２つの方法がある。2. Description of the Related Art In a mobile communication base station antenna, in order to change a service area of a base station, an angle from a horizontal direction (hereinafter, referred to as a tilt angle) of a main beam from which the antenna radiates the most radio waves is changed. There is. There are two methods of changing the tilt angle: mechanical tilt angle variable for mechanically tilting the antenna, and electrical tilt angle variable for changing the excitation phase of each sub-array by dividing the antenna into several sub-arrays.
【０００３】また電気的チルト可変の方法としては、各
サブアレーの接続ケーブルの長さを変更し励振位相を変
更する方法や、各サブアレーに移相器を接続することに
より励振位相を変更する方法があるが、移動体通信用基
地局アンテナは鉄塔などの高所に取り付けられる場合が
多く、作業性の面から移相器を用いたチルト角の変更方
法が要求されている。As a method of changing the electric tilt, there are a method of changing the length of a connection cable of each sub-array to change the excitation phase, and a method of changing the excitation phase by connecting a phase shifter to each sub-array. However, the mobile communication base station antenna is often mounted on a high place such as a steel tower, and a method of changing the tilt angle using a phase shifter is required from the viewpoint of workability.
【０００４】これに対し、従来の移相器としては公開特
許公報の特開平５−１２１９０２に示されるものがあっ
た。On the other hand, as a conventional phase shifter, there has been a phase shifter disclosed in Japanese Patent Laid-Open Publication No. HEI 5-121902.
【０００５】図３に従来の移相器の構成図を示す。図３
において１は同軸線路外部導体、２は同軸線路内部導
体、３は固体誘電体より成る可動筒体、４は結合回路を
示す。FIG. 3 shows a configuration diagram of a conventional phase shifter. FIG.
In the figures, 1 is an outer conductor of a coaxial line, 2 is an inner conductor of a coaxial line, 3 is a movable cylinder made of a solid dielectric, and 4 is a coupling circuit.
【０００６】従来の移相器では固体誘電体より成る可動
筒体３の挿入量ＬＤを変化させることにより、ＬＤが０
の時を基準に位相変化量θ（ｄｅｇ）を図４に示すよう
に変化させることができるが、挿入量ＬＤと位相変化量
θはリニアではない。これは固体誘電体より成る可動筒
体の結合回路側からの反射と同軸線路の終端からの反射
の２点反射によるもので、その位相関係が挿入量ＬＤに
より変化することに起因する。[0006] In the conventional phase shifter, by changing the insertion amount LD of the movable cylinder 3 made of a solid dielectric, LD is reduced to zero.
4, the phase change amount θ (deg) can be changed as shown in FIG. 4, but the insertion amount LD and the phase change amount θ are not linear. This is due to two-point reflection, that is, reflection from the coupling circuit side of the movable cylindrical body made of a solid dielectric and reflection from the end of the coaxial line. The phase relationship is changed by the insertion amount LD.
【０００７】[0007]
【発明が解決しようとする課題】このような従来の移相
器では可動筒体の挿入量を変化させることにより位相を
変化させることができるが、位相の変化量が可動筒体の
挿入量に対しリニアに変化せず、所望の位相変化量を得
るためには可動筒体の挿入量の計算が複雑になる欠点が
あった。特に外部回路により位相変化量をコントロール
する場合には計算の複雑さは回路構成の簡略化を妨げる
ことになる。In such a conventional phase shifter, the phase can be changed by changing the amount of insertion of the movable cylinder, but the amount of change in the phase is reduced by the amount of insertion of the movable cylinder. On the other hand, there is a drawback that the calculation of the insertion amount of the movable cylinder becomes complicated in order to obtain a desired phase change amount without a linear change. Especially when the amount of phase change is controlled by an external circuit, the complexity of calculation hinders simplification of the circuit configuration.
【０００８】この発明は、上記問題を解決するためにな
されたもので、誘電体の挿入量に対し、位相変化量がリ
ニアに変化する移相器を得ることを目的とする。SUMMARY OF THE INVENTION The present invention has been made to solve the above problem, and has as its object to obtain a phase shifter in which the amount of phase change changes linearly with respect to the amount of dielectric inserted.
【０００９】[0009]
【課題を解決するための手段】第１の発明による移相器
は、平板上の第１の地導体と、前記第１の地導体の一方
の面と所定の間隔をおいて位置するコの字形の内導体
と、前記内導体を挟んで前記第１の地導体と対向してい
る第２の地導体と、前記第１の地導体と内導体および前
記第２の他導体と内導体の間に位置する可動可能な１対
の誘電体板より構成されるトリプレート線路において、
前記誘電体板を前記コの字形の内導体の左側から第１及
び第２の誘電体板により構成し、誘電体板が挿入されな
い線路の比実効誘電率の平方根をｎ０、第１の誘電体板
が挿入される線路の比実効誘電率の平方根をｎ１、第２
の誘電体板が挿入される線路の比実効誘電率の平方根を
ｎ２とした時、ｎ１＝（ｎ０・ｎ２）1/2 としまた、真
空中の波長をλ０としたとき第１の誘電体板の長さＬ１
をＬ１＝λ０／４／ｎ１としたものである。According to a first aspect of the present invention, there is provided a phase shifter, comprising: a first ground conductor on a flat plate; and a first ground conductor located at a predetermined distance from one surface of the first ground conductor. -Shaped inner conductor, a second ground conductor facing the first ground conductor with the inner conductor interposed therebetween, and a second ground conductor and the inner conductor, and a second ground conductor and the inner conductor In a triplate line composed of a pair of movable dielectric plates located between the
The dielectric plate is composed of first and second dielectric plates from the left side of the U-shaped inner conductor, and the square root of the relative effective permittivity of the line where the dielectric plate is not inserted is n0, the first dielectric The square root of the relative effective permittivity of the line into which the plate is inserted is n1, the second
When the square root of the relative effective permittivity of the line into which the dielectric plate is inserted is n2, n1 = (n0 · n2) 1/2, and when the wavelength in vacuum is λ0, the first dielectric plate Length L1
Is set to L1 = λ0 / 4 / n1.
【００１０】また、第２の発明による移相器は、第１の
発明の移相器の誘電体板をそれぞれ誘電率の異なる第１
及び第２の誘電体板により構成したものである。In the phase shifter according to the second invention, the dielectric plates of the phase shifter according to the first invention have first dielectric layers having different dielectric constants.
And a second dielectric plate.
【００１１】また、第３の発明による移相器は、第１の
発明の移相器の誘電体板を同一材料の第１及び第２の誘
電体板により構成したものである。Further, a phase shifter according to a third aspect of the present invention is the phase shifter according to the first aspect of the present invention, wherein the dielectric plates of the phase shifter of the first aspect are formed of first and second dielectric plates of the same material.
【００１２】[0012]
【発明の実施の形態】実施の形態１．図１（ａ）はこの
発明の実施の形態１を示す移相器の構成図である。図１
（ｂ）は図１（ａ）の断面ＡＡ’を示す。図１において
５は入出力端子、６はトリプレート線路内導体、７はト
リプレート線路地導体、８は第１の誘電体板、９は第１
の誘電体板と誘電率の異なる第２の誘電体板を示す。DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 FIG. 1A is a configuration diagram of a phase shifter according to Embodiment 1 of the present invention. FIG.
FIG. 1B shows a cross section AA ′ of FIG. In FIG. 1, 5 is an input / output terminal, 6 is a triplate line inner conductor, 7 is a triplate line ground conductor, 8 is a first dielectric plate, and 9 is a first dielectric plate.
2 shows a second dielectric plate having a different dielectric constant from that of the first dielectric plate.
【００１３】次に動作について説明する。第１の誘電体
板８の両端では一般的には不連続が存在するため反射波
が生じるが、第１の誘電体板８と第２の誘電体板９の誘
電率と形状を選ぶことにより数１を満足することができ
るため両端の反射波は打ち消される。Next, the operation will be described. A reflected wave is generally generated at both ends of the first dielectric plate 8 due to discontinuity, but by selecting the permittivity and shape of the first dielectric plate 8 and the second dielectric plate 9, Since Equation 1 can be satisfied, the reflected waves at both ends are canceled.
【００１４】[0014]
【数１】 (Equation 1)
【００１５】なぜなら誘電体板のない線路の特性インピ
ーダンスをＺ０、第１の誘電体板８が存在する部分の線
路の特性インピーダンスをＺ１、第２の誘電体板９の存
在する部分の線路の特性インピーダンスをＺ２とする
と、数２となりThe characteristic impedance of the line without the dielectric plate is Z0, the characteristic impedance of the line where the first dielectric plate 8 exists is Z1, and the characteristic impedance of the line where the second dielectric plate 9 exists is Z0. Assuming that the impedance is Z2,
【００１６】[0016]
【数２】 (Equation 2)
【００１７】よって数３の整合条件を満たすためであ
る。This is to satisfy the matching condition of Expression 3.
【００１８】[0018]
【数３】 (Equation 3)
【００１９】よって入出力端子５ａから入った電波は反
射することなく全て入出力端子５ｂに出力される。この
時Ｌｄが０のときの位相を基準とした時の位相変化量φ
［ｄｅｇ］は数４となり、位相変化量φはＬｄにたいし
リニアな式によりあらわされる。Therefore, all the radio waves entering from the input / output terminal 5a are output to the input / output terminal 5b without being reflected. At this time, the phase change amount φ with reference to the phase when Ld is 0
[Deg] is expressed by Equation 4, and the amount of phase change φ is expressed by a linear expression with respect to Ld.
【００２０】[0020]
【数４】 (Equation 4)
【００２１】この実施の形態１においては線路をトリプ
レート線路としたが、サスペンデッド線路、マイクロス
トリップ線路等にしても同じ効果が得られることは明白
である。また、第１の誘電体板を１段整合回路の条件を
満たす誘電体板としたが多段整合回路の条件を満たす誘
電体板としても同じ効果が得られることは明白である。Although the line is a triplate line in the first embodiment, it is apparent that the same effect can be obtained by using a suspended line, a microstrip line, or the like. Although the first dielectric plate is a dielectric plate satisfying the condition of the one-stage matching circuit, it is apparent that the same effect can be obtained even if the first dielectric plate satisfies the condition of the multi-stage matching circuit.
【００２２】実施の形態２．図２（ａ）はこの発明の実
施の形態２を示す移相器の構成図である。図２（ｂ）は
図２（ａ）の断面ＡＡ’を示す。図２において５は入出
力端子、６はトリプレート線路内導体、７はトリプレー
ト線路地導体、８は第１の誘電体板、１０は第１の誘電
体板と同一材料の第２の誘電体板を示す。Embodiment 2 FIG. FIG. 2A is a configuration diagram of a phase shifter according to Embodiment 2 of the present invention. FIG. 2B shows a cross section AA ′ of FIG. 2A. In FIG. 2, 5 is an input / output terminal, 6 is a triplate line inner conductor, 7 is a triplate line ground conductor, 8 is a first dielectric plate, and 10 is a second dielectric made of the same material as the first dielectric plate. 1 shows a body plate.
【００２３】ここで、第２の誘電体板を第１の誘電体板
と同一材料としたが、第１の誘電体と第２の誘電体の形
状を選ぶことにより、ｎ１＝（ｎ０・ｎ２）1/2 を満足
することができるので実施の形態１と同じく位相変化量
φがＬｄにたいしリニアな式によりあらわされる移相器
を実現できる。Here, the second dielectric plate is made of the same material as the first dielectric plate, but by selecting the shapes of the first dielectric and the second dielectric, n1 = (n0.n2). 2 ) Since 1/2 can be satisfied, it is possible to realize a phase shifter in which the amount of phase change φ is expressed by a linear expression with respect to Ld as in the first embodiment.
【００２４】[0024]
【発明の効果】第１〜第３の発明よれば第１の誘電体板
の両端の反射波は常に打ち消されるため、位相変化量が
誘電体板の挿入量に対しリニアな式により表すことがで
きる移相器を実現できる。またこれにより、外部回路に
より位相変化量をコントロールする場合従来より簡易な
回路構成とすることができる。According to the first to third aspects of the present invention, since the reflected waves at both ends of the first dielectric plate are always canceled out, the phase change amount can be expressed by a linear equation with respect to the insertion amount of the dielectric plate. A phase shifter that can be realized. In addition, this makes it possible to provide a simpler circuit configuration than the related art when controlling the amount of phase change by an external circuit.
【図１】 この発明による移相器の実施の形態１を示す
図である。FIG. 1 is a diagram showing Embodiment 1 of a phase shifter according to the present invention.
【図２】 この発明による移相器の実施の形態２を示す
図である。FIG. 2 is a diagram showing Embodiment 2 of a phase shifter according to the present invention.
【図３】 従来の移相器を示す図である。FIG. 3 is a diagram showing a conventional phase shifter.
【図４】 従来の移相器の位相変化量の特性図である。FIG. 4 is a characteristic diagram of a phase change amount of a conventional phase shifter.
１ 同軸線路外部導体、２ 同軸線路内部導体、３ 固
体誘電体より成る可動筒体、４ 結合回路、５ 入出力
端子、６ トリプレート線路内導体、７ トリプレート
線路外導体、８ 第１の誘電体板、９ 第１の誘電体板
と誘電率の異なる第２の誘電体板、１０ 第１の誘電体
板と同一材料の第２の誘電体板。REFERENCE SIGNS LIST 1 outer conductor of coaxial line, 2 inner conductor of coaxial line, 3 movable cylinder made of solid dielectric, 4 coupling circuit, 5 input / output terminal, 6 inner conductor of triplate line, 7 outer conductor of triplate line, 8 first dielectric Body plate, 9 Second dielectric plate having a different dielectric constant from the first dielectric plate, 10 Second dielectric plate of the same material as the first dielectric plate.
Claims (3)
導体の一方の面と所定の間隔をおいて位置するコの字形
の内導体と、前記内導体を挟んで前記第１の地導体と対
向している第２の地導体と、前記第１の地導体と内導体
および前記第２の地導体と内導体の間に位置する可動可
能な１対の誘電体板より構成されるトリプレート線路の
前記誘電体板を前記コの字形の内導体の端部から第１及
び第２の誘電体板により構成し、誘電体板が挿入されな
い線路の比実効誘電率の平方根をｎ０、第１の誘電体板
が挿入される線路の比実効誘電率の平方根をｎ１、第２
の誘電体板が挿入される線路の比実効誘電率の平方根を
ｎ２とした時、ｎ１＝（ｎ０・ｎ２）1/2 としまた、真
空中の波長をλ０としたとき第１の誘電体板の長さＬ１
をＬ１＝λ０／４／ｎ１としたことを特徴とする移相
器。A first ground conductor having a flat plate shape, a U-shaped inner conductor positioned at a predetermined distance from one surface of the first ground conductor, and the first ground conductor sandwiching the inner conductor. A second ground conductor facing the first ground conductor, and a pair of movable dielectric plates located between the first ground conductor and the inner conductor and between the second ground conductor and the inner conductor. The dielectric plate of the configured triplate line is constituted by first and second dielectric plates from the end of the U-shaped inner conductor, and the square root of the relative effective permittivity of the line in which the dielectric plate is not inserted. Is n0, the square root of the relative effective permittivity of the line into which the first dielectric plate is inserted is n1, the second is
When the square root of the relative effective permittivity of the line into which the dielectric plate is inserted is n2, n1 = (n0 · n2) 1/2, and when the wavelength in vacuum is λ0, the first dielectric plate Length L1
L1 = λ0 / 4 / n1.
誘電体板をそれぞれ誘電率の異なる材料により構成した
ことを特徴とする請求項１記載の移相器。2. The phase shifter according to claim 1, wherein the first dielectric plate and the second dielectric plate of the dielectric plate are made of materials having different dielectric constants.
誘電体板を同一材料により構成したことを特徴とする請
求項１記載の移相器。3. The phase shifter according to claim 1, wherein the first dielectric plate and the second dielectric plate of the dielectric plate are made of the same material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP558798A JPH11205002A (en) | 1998-01-14 | 1998-01-14 | Phase shifter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP558798A JPH11205002A (en) | 1998-01-14 | 1998-01-14 | Phase shifter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH11205002A true JPH11205002A (en) | 1999-07-30 |
Family
ID=11615384
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP558798A Pending JPH11205002A (en) | 1998-01-14 | 1998-01-14 | Phase shifter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH11205002A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1162845A2 (en) | 2000-06-02 | 2001-12-12 | Sony Corporation | Apparatus and method for information processing, and recording medium |
| WO2002015321A1 (en) * | 2000-08-12 | 2002-02-21 | Kmw Inc. | Signal process apparatus for phase-shifting n number of signals inputted thereto |
| FR2813445A1 (en) * | 2000-08-28 | 2002-03-01 | In Snec | Low loss electrical phase shifter having several sections conductor track non aligned and controlled movement dielectric material modifying dielectric track coverage. |
| KR20030081626A (en) * | 2002-04-12 | 2003-10-22 | 주식회사 감마누 | Phase shifter for controlling electrical beam tilt and dual-band base-station antenna using the same |
| KR100889443B1 (en) | 2001-08-24 | 2009-03-23 | 앤드류 코포레이션 | Device for feedings signals, dielectirc phase shifter and method of manufacturing the dielectirc phase shifter |
| JP2014158188A (en) * | 2013-02-15 | 2014-08-28 | Hitachi Metals Ltd | Phase shifting circuit and antenna device |
| WO2016157375A1 (en) * | 2015-03-30 | 2016-10-06 | 日立金属株式会社 | Phase shifting circuit and antenna device |
| WO2016157374A1 (en) * | 2015-03-30 | 2016-10-06 | 日立金属株式会社 | Phase-shifting circuit and antenna device |
| WO2017135680A1 (en) * | 2016-02-03 | 2017-08-10 | 주식회사 케이엠더블유 | Phase shifting device |
| US10403948B2 (en) | 2016-07-08 | 2019-09-03 | Hitachi Metals, Ltd. | Adjustable phase shifter including a signal conductor, a movable dielectric plate and a transformer unit, where the transformer unit defines overlapped and non-overlapped portions with respect to the signal conductor |
| EP3547446A4 (en) * | 2016-11-25 | 2020-06-24 | Comba Telecom Technology (Guangzhou) Ltd. | Dielectric phase shifting unit, dielectric phase shifter and base station antenna |
-
1998
- 1998-01-14 JP JP558798A patent/JPH11205002A/en active Pending
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1162845A2 (en) | 2000-06-02 | 2001-12-12 | Sony Corporation | Apparatus and method for information processing, and recording medium |
| WO2002015321A1 (en) * | 2000-08-12 | 2002-02-21 | Kmw Inc. | Signal process apparatus for phase-shifting n number of signals inputted thereto |
| FR2813445A1 (en) * | 2000-08-28 | 2002-03-01 | In Snec | Low loss electrical phase shifter having several sections conductor track non aligned and controlled movement dielectric material modifying dielectric track coverage. |
| EP1187246A1 (en) * | 2000-08-28 | 2002-03-13 | In-Snec | Low loss adjustable electrical phase shifter |
| KR100889443B1 (en) | 2001-08-24 | 2009-03-23 | 앤드류 코포레이션 | Device for feedings signals, dielectirc phase shifter and method of manufacturing the dielectirc phase shifter |
| KR20030081626A (en) * | 2002-04-12 | 2003-10-22 | 주식회사 감마누 | Phase shifter for controlling electrical beam tilt and dual-band base-station antenna using the same |
| JP2014158188A (en) * | 2013-02-15 | 2014-08-28 | Hitachi Metals Ltd | Phase shifting circuit and antenna device |
| US9437907B2 (en) | 2013-02-15 | 2016-09-06 | Hitachi Metals, Ltd. | Phase shift circuit and antenna device comprised of at least one movable dielectric body overlapping with an intersecting part of a conductor |
| WO2016157375A1 (en) * | 2015-03-30 | 2016-10-06 | 日立金属株式会社 | Phase shifting circuit and antenna device |
| WO2016157374A1 (en) * | 2015-03-30 | 2016-10-06 | 日立金属株式会社 | Phase-shifting circuit and antenna device |
| JPWO2016157374A1 (en) * | 2015-03-30 | 2017-12-14 | ＡＰＲＥＳＩＡ Ｓｙｓｔｅｍｓ株式会社 | Phase shift circuit and antenna device |
| US10686423B2 (en) | 2015-03-30 | 2020-06-16 | Hitachi Metals, Ltd. | Phase-shifting circuit and antenna device |
| WO2017135680A1 (en) * | 2016-02-03 | 2017-08-10 | 주식회사 케이엠더블유 | Phase shifting device |
| US10957957B2 (en) | 2016-02-03 | 2021-03-23 | Kmw Inc. | Phase shifter including a guide unit with a guide roller which moves movable boards relative to fixed boards |
| US10403948B2 (en) | 2016-07-08 | 2019-09-03 | Hitachi Metals, Ltd. | Adjustable phase shifter including a signal conductor, a movable dielectric plate and a transformer unit, where the transformer unit defines overlapped and non-overlapped portions with respect to the signal conductor |
| EP3547446A4 (en) * | 2016-11-25 | 2020-06-24 | Comba Telecom Technology (Guangzhou) Ltd. | Dielectric phase shifting unit, dielectric phase shifter and base station antenna |
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