JP2000196302A - Variable distribution phase shifter - Google Patents
Variable distribution phase shifterInfo
- Publication number
- JP2000196302A JP2000196302A JP37087798A JP37087798A JP2000196302A JP 2000196302 A JP2000196302 A JP 2000196302A JP 37087798 A JP37087798 A JP 37087798A JP 37087798 A JP37087798 A JP 37087798A JP 2000196302 A JP2000196302 A JP 2000196302A
- Authority
- JP
- Japan
- Prior art keywords
- conductor
- phase shifter
- coupling conductor
- rotary coupling
- rotation
- 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.)
- Granted
Links
Landscapes
- Waveguide Switches, Polarizers, And Phase Shifters (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、高周波信号の分配
が行えるとともに、分配された信号の位相差を連続的に
変えることのできる分配可変移相器に関するものであ
る。この分配可変移相器を用いてアレイアンテナのビー
ムチルト角を連続的に変えることのできる給電移相器を
構成することができる。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a variable phase shifter capable of distributing a high frequency signal and continuously changing the phase difference of the distributed signal. A feed phase shifter that can continuously change the beam tilt angle of the array antenna can be configured using the variable distribution phase shifter.
【０００２】[0002]
【従来の技術】アレイアンテナのビームチルト角を変え
るためには、電力分配器で分配された高周波信号を各ア
ンテナ素子に給電する位相を変える必要がある。このた
めには、各アンテナ素子に給電するストリップラインの
長さを任意に変えることのできる分配可変移相器が提案
されている（特開平５−１２１９１５号公報、特開平９
−２１４２１１号公報参照）。この分配可変移相器によ
れば、時計の針のような回転結合導体を回転させて、円
弧状出力側ストリップラインの任意の位置に信号を供給
することにより分配位相を変えることができる。2. Description of the Related Art In order to change the beam tilt angle of an array antenna, it is necessary to change the phase of feeding a high frequency signal distributed by a power distributor to each antenna element. To this end, a variable distribution phase shifter capable of arbitrarily changing the length of a strip line feeding each antenna element has been proposed (JP-A-5-121915, JP-A-9-91).
-214121). According to this variable distribution phase shifter, it is possible to change the distribution phase by rotating a rotary coupling conductor such as a clock hand and supplying a signal to an arbitrary position on the arc-shaped output-side stripline.
【０００３】図７は、特開平９−２１４２１１号公報か
ら引用する分配可変移相器の概略図である。図７による
と、誘電体基板１０４の上に入力側ストリップ線路１０
１と、円弧状の出力側ストリップ線路１０３を形成し、
回転結合導体１０２を両者の間に渡している。そして回
転結合導体１０２の回転角θに応じた分配位相差を実現
している。FIG. 7 is a schematic diagram of a variable phase shifter disclosed in Japanese Patent Application Laid-Open No. 9-214111. According to FIG. 7, the input side strip line 10 is placed on the dielectric substrate 104.
1 to form an arc-shaped output-side stripline 103,
The rotation coupling conductor 102 is passed between them. Then, a distribution phase difference corresponding to the rotation angle θ of the rotation coupling conductor 102 is realized.
【０００４】[0004]
【発明が解決しようとする課題】ところが、前期公報に
記載された分配可変移相器では、回動角θの大きさに応
じて、回転結合導体１０２と入力側ストリップ線路１０
１との結合部の位置関係が変化する。このため、回転結
合導体１０２と入力側ストリップ線路１０１との結合部
の電気的特性が変化するという問題がある。However, in the variable phase shifter described in the above publication, the rotation coupling conductor 102 and the input side strip line 10 are changed according to the magnitude of the rotation angle θ.
The positional relationship of the connecting portion with No. 1 changes. For this reason, there is a problem that the electrical characteristics of the coupling portion between the rotation coupling conductor 102 and the input side stripline 101 change.
【０００５】そこで、本発明は、回動角θがかわっても
入力側ストリップラインと回転結合導体との位置関係が
不変で、電気的特性の変化しない分配可変移相器を実現
することを目的とする。SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to realize a variable distribution phase shifter in which the positional relationship between the input stripline and the rotary coupling conductor is invariable even when the rotation angle θ changes, and the electrical characteristics do not change. And
【０００６】[0006]
【課題を解決するための手段及び発明の効果】本発明の
分配可変移相器は、固定地板と、回転結合導体と、スト
リップ導体とを備え、前記ストリップ導体は、固定地板
の一点を中心として固定地板の上に円弧状又は円環状に
設けられ、前記回転結合導体は前記円弧又は円環と同心
に回転可能に設置され、前記中心点には、回転結合導体
の回転軸となる断面円形の導体棒が、地板を貫通し、当
該導体棒が地板の裏側において、回転結合導体とつなが
る電極を形成しているものである（請求項１）。A variable phase shifter according to the present invention comprises a fixed ground plane, a rotary coupling conductor, and a strip conductor, wherein the strip conductor is centered on one point of the fixed ground plane. Provided on the fixed ground plane in an arc or an annular shape, the rotary coupling conductor is installed so as to be rotatable concentrically with the arc or the annular shape, and the center point has a circular cross-section serving as a rotation axis of the rotary coupling conductor. The conductor rod penetrates the ground plane, and the conductor rod forms an electrode connected to the rotation coupling conductor on the back side of the ground plane (claim 1).
【０００７】この構成の分配可変移相器によれば、高周
波電気信号は導体棒より入力され、回転結合導体を伝搬
して、ストリップ導体に結合され、両方向に分配され
る。このとき回転結合導体の回転角を設定することによ
り、両方向に分配された信号の位相差を変化させること
ができる。この発明の特徴は、回転結合導体が、その回
転軸に対して、回転対称形の導体（例えば円柱導体棒）
を中心にして回転することである。したがって、回転結
合導体の回動角θがかわっても中心導体と回転結合導体
との位置関係が不変で、これらの結合部の高周波電気的
特性が変化しないという効果を奏する。According to the variable phase shifter of this configuration, the high-frequency electric signal is input from the conductor bar, propagates through the rotary coupling conductor, is coupled to the strip conductor, and is distributed in both directions. At this time, by setting the rotation angle of the rotation coupling conductor, the phase difference between the signals distributed in both directions can be changed. A feature of the present invention is that a rotation coupling conductor is a conductor that is rotationally symmetric with respect to its rotation axis (eg, a cylindrical conductor rod)
Is to rotate around. Therefore, even if the rotation angle θ of the rotation coupling conductor changes, the positional relationship between the center conductor and the rotation coupling conductor does not change, and there is an effect that the high-frequency electrical characteristics of these coupling portions do not change.
【０００８】前記回転結合導体とストリップ導体との接
触面及び導体棒との接触面には、絶縁膜が介在している
（請求項２）。回転結合導体とストリップ導体、回転結
合導体と導体棒との摺動性をよくし、静電結合を確保す
るためである。また、可動部の導体同士の接触は雑音特
性、相互変調歪みの原因となるが、これを避けるためで
もある。[0008] An insulating film is interposed on the contact surface between the rotary coupling conductor and the strip conductor and the contact surface with the conductor bar. This is for improving the slidability between the rotation coupling conductor and the strip conductor and between the rotation coupling conductor and the conductor bar, and ensuring electrostatic coupling. In addition, contact between the conductors of the movable portion causes noise characteristics and intermodulation distortion, but this is also to avoid this.
【０００９】[0009]
【発明の実施の形態】以下、本発明の実施の形態を、添
付図面を参照しながら詳細に説明する。図１は、分配可
変移相器の斜視図であり、図２は平面図である。分配可
変移相器は、金属製の固定地板１の上に絶縁基板５を設
け、その上に円弧状又は円環状のストリップ導体２を形
成している。また、前記円弧又は円環の中心Ｐと同心に
回転可能な回転結合導体３を設置し、さらに、回転結合
導体３の回転軸となる断面円形の導体棒４を、固定地板
１を貫いて設置している。Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 is a perspective view of a variable distribution phase shifter, and FIG. 2 is a plan view. In the variable distribution phase shifter, an insulating substrate 5 is provided on a metal fixed ground plate 1, and an arc-shaped or annular strip conductor 2 is formed thereon. In addition, a rotatable coupling conductor 3 rotatable concentrically with the center P of the arc or ring is provided, and a conductor rod 4 having a circular cross section serving as a rotation axis of the rotatable coupling conductor 3 is provided through the fixed base plate 1. are doing.
【００１０】また、回転結合導体３とストリップ導体２
との絶縁を保ち、回転結合導体３と導体棒４との絶縁を
保つため、回転結合導体３の裏面に薄い絶縁フィルム６
をコーティングしている。絶縁フィルム６をコーティン
グする代わりに絶縁シートを挿入してもよい。絶縁フィ
ルム６又は絶縁シートは、静電結合の静電容量Ｃができ
るだけ大きく、高周波信号の周波数ｆにおけるインピー
ダンス（1/2πｆＣ）がストリップ導体２の特性インピ
ーダンスに比べてできるだけ小さくなるように、誘電率
の高く薄いものを選ぶことが広帯域特性確保のために望
ましい。例えばＰＥＴ（ポリエチレンテレフタレート）
やポリテトラフルオロエチレンの厚さ0.05mm程度のフィ
ルム又はシートを使用する。Further, the rotation coupling conductor 3 and the strip conductor 2
In order to maintain insulation between the rotating coupling conductor 3 and the conductor bar 4, a thin insulating film 6
Is coated. Instead of coating the insulating film 6, an insulating sheet may be inserted. The insulating film 6 or the insulating sheet has a dielectric constant such that the capacitance C of the electrostatic coupling is as large as possible and the impedance (1 / 2πfC) at the frequency f of the high-frequency signal is as small as possible as compared with the characteristic impedance of the strip conductor 2. It is desirable to select a thin material having a high thickness in order to secure broadband characteristics. For example, PET (polyethylene terephthalate)
Or a film or sheet of polytetrafluoroethylene having a thickness of about 0.05 mm is used.
【００１１】図３は分配可変移相器の側断面図と底面図
を表す。絶縁基板５は、固定地板１の上面に一部埋め込
まれており、この絶縁基板５の上にストリップ導体２が
形成されている。導体棒４は、回転結合導体３を回転自
在に載せるための平らな円い頭部４ａと突起４ｂを有す
る円柱体であり、頭部４ａの直径の方が円柱体自体の直
径よりも大きくなっている。さらに、導体棒４は固定地
板１との絶縁を保つための円筒状の絶縁体７にはめ込ま
れており、この状態で、導体棒４及び絶縁体７が固定地
板１の孔に挿入されている。FIG. 3 shows a side sectional view and a bottom view of the variable phase shifter. The insulating substrate 5 is partially embedded in the upper surface of the fixed ground plate 1, and the strip conductor 2 is formed on the insulating substrate 5. The conductor rod 4 is a cylindrical body having a flat circular head 4a and a projection 4b for rotatably mounting the rotary coupling conductor 3, and the diameter of the head 4a is larger than the diameter of the cylindrical body itself. ing. Further, the conductor bar 4 is fitted into a cylindrical insulator 7 for maintaining insulation from the fixed base plate 1. In this state, the conductor bar 4 and the insulator 7 are inserted into holes of the fixed base plate 1. .
【００１２】また、絶縁フィルム６又は絶縁シートには
前記突起４ｂよりも十分に大きな直径を持つ孔をあけ、
回転結合導体３に穴を設けて絶縁筒４ｃを介してこの突
起４ｂに嵌合させることにより、回転結合導体３の回転
を可能にする。しかし、回転結合導体３の回転機構は、
図３記載のものに限られず、前記以外に任意の構造を採
用できる。A hole having a diameter sufficiently larger than the protrusion 4b is formed in the insulating film 6 or the insulating sheet.
By providing a hole in the rotation coupling conductor 3 and fitting it into the projection 4b via the insulating cylinder 4c, the rotation of the rotation coupling conductor 3 is enabled. However, the rotation mechanism of the rotation coupling conductor 3 is as follows.
The structure is not limited to the one shown in FIG.
【００１３】固定地板１の裏側には、固定地板１と電気
的に接続される金属円筒８が前記絶縁体７を囲んでい
る。この金属円筒８と前記導体棒４とで短い同軸伝送路
を構成しており、かつ同軸ケーブルの電極端子となる。
電極端子から、導体棒４を通して回転結合導体３に入っ
た信号は、ストリップ導体２において２分配され、分配
後はストリップ導体２の両端の出力部（図示せず）に達
する。回転結合導体３の回転角に応じて決まるストリッ
プ導体２の長さの差が、分配された両信号の位相差を決
定する。A metal cylinder 8 electrically connected to the fixed base plate 1 surrounds the insulator 7 on the back side of the fixed base plate 1. The metal cylinder 8 and the conductor rod 4 constitute a short coaxial transmission line and serve as an electrode terminal of a coaxial cable.
The signal that has entered the rotary coupling conductor 3 from the electrode terminal through the conductor rod 4 is split into two in the strip conductor 2, and after division, reaches an output portion (not shown) at both ends of the strip conductor 2. The difference in the length of the strip conductor 2 determined according to the rotation angle of the rotary coupling conductor 3 determines the phase difference between the two distributed signals.
【００１４】以上の構成のとおりであるから、回転結合
導体３が回転しても、回転結合導体３は導体棒４の平ら
な円い頭部４ａの上を回転するだけであり、両者の電気
的結合状態は変わらない。したがって、分配移相量の如
何にかかわらず、電気的特性は変化しない。図４は、分
配可変移相器の他の具体例を示す側断面図である。With the above configuration, even if the rotary coupling conductor 3 rotates, the rotary coupling conductor 3 merely rotates on the flat circular head 4a of the conductor rod 4, and the electrical connection between the two components is reduced. The static coupling state does not change. Therefore, the electrical characteristics do not change regardless of the amount of phase shift. FIG. 4 is a side sectional view showing another specific example of the variable distribution phase shifter.
【００１５】この例によれば、固定地板１の裏側にスト
リップ導体１０を形成した絶縁基板９を設け、固定地板
１の孔に挿入されている導体棒４の先端が、分配可変移
相器の入力部として機能するストリップ導体１０に接続
されている。この場合の回転結合導体３の回転機構は、
図３の構造とは異なり、回転結合導体３にピン３ａを通
し、絶縁フィルム６又は絶縁シートにはこのピン３ａよ
りも十分に大きな直径を持つ孔をあけ、導体棒４の頭部
４ａに穴４ｄを設けて絶縁筒を介してこのピン３ａに嵌
合させている。According to this example, the insulating substrate 9 having the strip conductor 10 formed on the back side of the fixed ground plane 1 is provided, and the tip of the conductor rod 4 inserted into the hole of the fixed ground plane 1 is connected to the variable distribution phase shifter. It is connected to a strip conductor 10 functioning as an input unit. The rotation mechanism of the rotation coupling conductor 3 in this case is as follows.
Unlike the structure of FIG. 3, a pin 3a is passed through the rotary coupling conductor 3, a hole having a diameter sufficiently larger than the pin 3a is formed in the insulating film 6 or the insulating sheet, and a hole is formed in the head 4a of the conductor rod 4. 4d is provided and fitted to the pin 3a via an insulating cylinder.
【００１６】図５は、４方向に分配する分配可変移相器
を示す平面図、図６は側断面図である。回転結合導体２
１の回転軸は、回転結合導体２１の端部ではない途中部
のａ：ｂの内分点に設定されている。ａ，ｂの数値は限
定されないが、例えば３：１にとられる。回転軸の構造
は、図４を用いて説明したのとほぼ同じであるが、地板
２０の裏面の基板２９と地板２０との間に空気が介在し
ていることのみ異なっている。基板２９のストリップ導
体３０から導体棒２７を通して回転結合導体２１に入力
された信号は２分され、それぞれ扇形に形成されたスト
リップ導体２２，２６に供給され、それぞれ２分され、
出力端に伝搬される。FIG. 5 is a plan view showing a variable phase shifter for distribution in four directions, and FIG. 6 is a side sectional view. Rotary coupling conductor 2
The rotation axis 1 is set at a midpoint of a: b in the middle of the rotation coupling conductor 21 instead of at the end. The numerical values of a and b are not limited, but are set to, for example, 3: 1. The structure of the rotation shaft is almost the same as that described with reference to FIG. 4, except that air is interposed between the substrate 29 on the back surface of the base plate 20 and the base plate 20. A signal input from the strip conductor 30 of the substrate 29 to the rotary coupling conductor 21 through the conductor rod 27 is divided into two, and supplied to the sector-shaped strip conductors 22 and 26, respectively, and divided into two.
Propagated to the output end.
【００１７】以上のように、本発明の実施の形態を説明
したが、本発明は前記の実施の形態に限定されるもので
はない。例えば、回転結合導体３の回転機構は、図示し
たものに限られず、任意の回転機構を採用してもよい。
その他本発明の範囲内で種々の変更を施すことが可能で
ある。As described above, the embodiments of the present invention have been described, but the present invention is not limited to the above embodiments. For example, the rotation mechanism of the rotation coupling conductor 3 is not limited to the illustrated one, and any rotation mechanism may be adopted.
Various other changes can be made within the scope of the present invention.
【図１】本発明の分配可変移相器の実施の形態を説明す
るための斜視図である。FIG. 1 is a perspective view illustrating an embodiment of a variable distribution phase shifter according to the present invention.
【図２】図１の分配可変移相器の平面図である。FIG. 2 is a plan view of the variable distribution phase shifter of FIG. 1;
【図３】図１の分配可変移相器の側断面図である。FIG. 3 is a side sectional view of the variable distribution phase shifter of FIG. 1;
【図４】本発明の分配可変移相器の他の実施の形態を説
明するための側断面図である。FIG. 4 is a side sectional view for explaining another embodiment of the variable distribution phase shifter of the present invention.
【図５】本発明の４分配型の分配可変移相器の実施の形
態を説明するための平面図である。FIG. 5 is a plan view for explaining an embodiment of a four-distribution type variable distribution phase shifter of the present invention.
【図６】図５の分配可変移相器の側断面図である。FIG. 6 is a side sectional view of the variable distribution phase shifter of FIG. 5;
【図７】従来の分配可変移相器を示す斜視図である。FIG. 7 is a perspective view showing a conventional variable distribution phase shifter.
１，２０ 固定地板 ２，２２，２６ ストリップ導体 ３，２１ 回転結合導体 ４，２７ 導体棒 ６，２４ 絶縁フィルム ７ 絶縁体 ８ 金属円筒 ９，２９ 絶縁基板 １０，３０ ストリップ導体 1,20 Fixed ground plane 2,22,26 Strip conductor 3,21 Rotation coupling conductor 4,27 Conductor rod 6,24 Insulating film 7 Insulator 8 Metal cylinder 9,29 Insulating substrate 10,30 Strip conductor
───────────────────────────────────────────────────── フロントページの続き (72)発明者 桑山 一郎 大阪市此花区島屋一丁目１番３号 住友電 気工業株式会社大阪製作所内 (72)発明者 木村 孝志 大阪市此花区島屋一丁目１番３号 住友電 気工業株式会社大阪製作所内 (72)発明者 多湖 紀之 大阪市此花区島屋一丁目１番３号 住友電 気工業株式会社大阪製作所内 Ｆターム(参考） 5J012 GA14 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Ichiro Kuwayama 1-3-1, Shimaya, Konohana-ku, Osaka City Inside Sumitomo Electric Industries, Ltd. Osaka Works (72) Takashi Kimura 1-1-1, Shimaya, Konohana-ku, Osaka-shi No. 3 Sumitomo Electric Industries, Ltd. Osaka Works (72) Inventor Noriyuki Takako 1-3-1 Shimaya, Konohana-ku, Osaka City F-term (reference) 5J012 GA14 in Osaka Works, Sumitomo Electric Industries, Ltd.
Claims (2)
導体とを備え、 前記ストリップ導体は、固定地板の一点を中心として固
定地板の上に円弧状又は円環状に設けられ、 前記回転結合導体は前記円弧又は円環と同心に回転可能
に設置され、 前記中心点には、回転結合導体の回転軸となる断面円形
の導体棒が、地板を貫通し、 当該導体棒が地板の裏側において、回転結合導体とつな
がる電極を形成していることを特徴とする分配可変移相
器。1. A fixed ground plane, a rotary coupling conductor, and a strip conductor, wherein the strip conductor is provided in an arc shape or an annular shape on the fixed ground plane with one point of the fixed ground plane as a center. Is installed so as to be rotatable concentrically with the arc or ring, at the center point, a conductor rod having a circular cross section serving as a rotation axis of the rotation coupling conductor penetrates the ground plane, and the conductor rod is located on the back side of the ground plane, A variable variable phase shifter, wherein an electrode connected to a rotation coupling conductor is formed.
及び導体棒との接触面には、絶縁膜が介在していること
を特徴とする請求項１記載の分配可変移相器。2. The variable phase shifter according to claim 1, wherein an insulating film is interposed between a contact surface between the rotary coupling conductor and the strip conductor and a contact surface between the rotary coupling conductor and the conductor bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP37087798A JP3951488B2 (en) | 1998-12-25 | 1998-12-25 | Distributed variable phase shifter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP37087798A JP3951488B2 (en) | 1998-12-25 | 1998-12-25 | Distributed variable phase shifter |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2006214790A Division JP2006325257A (en) | 2006-08-07 | 2006-08-07 | Distributed variable phase shifter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000196302A true JP2000196302A (en) | 2000-07-14 |
| JP3951488B2 JP3951488B2 (en) | 2007-08-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP37087798A Expired - Fee Related JP3951488B2 (en) | 1998-12-25 | 1998-12-25 | Distributed variable phase shifter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3951488B2 (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6788165B2 (en) | 2002-11-08 | 2004-09-07 | Ems Technologies, Inc. | Variable power divider |
| WO2006039850A1 (en) * | 2004-10-13 | 2006-04-20 | Yuejun Yan | Variable attenuator |
| US7221239B2 (en) | 2002-11-08 | 2007-05-22 | Andrew Corporation | Variable power divider |
| US7233217B2 (en) | 2001-08-23 | 2007-06-19 | Andrew Corporation | Microstrip phase shifter |
| WO2009104265A1 (en) * | 2008-02-21 | 2009-08-27 | 日本電業工作株式会社 | Distributed phase shifter |
| JP2010135893A (en) * | 2008-12-02 | 2010-06-17 | Sumitomo Electric Ind Ltd | Phase shifter |
| KR101017672B1 (en) | 2008-06-26 | 2011-02-25 | 주식회사 에이스테크놀로지 | Phase shifter |
| KR101047321B1 (en) | 2008-04-24 | 2011-07-07 | 주식회사 에이스테크놀로지 | Phase shifter having a structure in which the rotating member and the guide member are coupled |
| CN103700944A (en) * | 2013-12-31 | 2014-04-02 | 苏州市大富通信技术有限公司 | Antenna and adjusting device for electrical downtilt of antenna |
| EP2731191A4 (en) * | 2011-07-27 | 2014-05-14 | Huawei Tech Co Ltd | Phase shift equipment and antenna system thereof |
| CN105609902A (en) * | 2015-12-25 | 2016-05-25 | 清华大学 | Reflection-type phase shifter, accelerator and operation method of reflection-type phase shifter |
| CN111725630A (en) * | 2020-06-23 | 2020-09-29 | Oppo广东移动通信有限公司 | Array antenna assembly, antenna module and electronic equipment |
| CN115566429A (en) * | 2022-09-29 | 2023-01-03 | 江苏亨鑫科技有限公司 | Compact double-layer backward installation phase shifter mechanism |
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1998
- 1998-12-25 JP JP37087798A patent/JP3951488B2/en not_active Expired - Fee Related
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7233217B2 (en) | 2001-08-23 | 2007-06-19 | Andrew Corporation | Microstrip phase shifter |
| US6788165B2 (en) | 2002-11-08 | 2004-09-07 | Ems Technologies, Inc. | Variable power divider |
| US7221239B2 (en) | 2002-11-08 | 2007-05-22 | Andrew Corporation | Variable power divider |
| WO2006039850A1 (en) * | 2004-10-13 | 2006-04-20 | Yuejun Yan | Variable attenuator |
| WO2009104265A1 (en) * | 2008-02-21 | 2009-08-27 | 日本電業工作株式会社 | Distributed phase shifter |
| KR101047321B1 (en) | 2008-04-24 | 2011-07-07 | 주식회사 에이스테크놀로지 | Phase shifter having a structure in which the rotating member and the guide member are coupled |
| KR101017672B1 (en) | 2008-06-26 | 2011-02-25 | 주식회사 에이스테크놀로지 | Phase shifter |
| JP4650561B2 (en) * | 2008-12-02 | 2011-03-16 | 住友電気工業株式会社 | Phase shifter |
| JP2010135893A (en) * | 2008-12-02 | 2010-06-17 | Sumitomo Electric Ind Ltd | Phase shifter |
| EP2731191A4 (en) * | 2011-07-27 | 2014-05-14 | Huawei Tech Co Ltd | Phase shift equipment and antenna system thereof |
| EP2731191A1 (en) * | 2011-07-27 | 2014-05-14 | Huawei Technologies Co., Ltd | Phase shift equipment and antenna system thereof |
| US9614281B2 (en) | 2011-07-27 | 2017-04-04 | Huawei Technologies Co., Ltd. | Phase array antenna having a movable phase shifting element and a dielectric element for changing the relative dielectric constant |
| CN103700944A (en) * | 2013-12-31 | 2014-04-02 | 苏州市大富通信技术有限公司 | Antenna and adjusting device for electrical downtilt of antenna |
| CN103700944B (en) * | 2013-12-31 | 2016-08-24 | 安徽省大富重工技术有限公司 | A kind of antenna and the adjusting means of lower decline angle thereof |
| CN105609902A (en) * | 2015-12-25 | 2016-05-25 | 清华大学 | Reflection-type phase shifter, accelerator and operation method of reflection-type phase shifter |
| CN111725630A (en) * | 2020-06-23 | 2020-09-29 | Oppo广东移动通信有限公司 | Array antenna assembly, antenna module and electronic equipment |
| CN115566429A (en) * | 2022-09-29 | 2023-01-03 | 江苏亨鑫科技有限公司 | Compact double-layer backward installation phase shifter mechanism |
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|---|---|
| JP3951488B2 (en) | 2007-08-01 |
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