WO2017088348A1 - Duplexer with quasi-stripline structure - Google Patents

Duplexer with quasi-stripline structure Download PDF

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Publication number
WO2017088348A1
WO2017088348A1 PCT/CN2016/080087 CN2016080087W WO2017088348A1 WO 2017088348 A1 WO2017088348 A1 WO 2017088348A1 CN 2016080087 W CN2016080087 W CN 2016080087W WO 2017088348 A1 WO2017088348 A1 WO 2017088348A1
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Prior art keywords
duplexer
quasi
cross
strip line
line structure
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PCT/CN2016/080087
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French (fr)
Chinese (zh)
Inventor
汪亭
王建
江文权
梁文超
梁基富
梁国春
陈咏
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江苏贝孚德通讯科技股份有限公司
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Publication of WO2017088348A1 publication Critical patent/WO2017088348A1/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P1/00—Auxiliary devices
    • H01P1/20—Frequency-selective devices, e.g. filters
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P1/00—Auxiliary devices
    • H01P1/20—Frequency-selective devices, e.g. filters
    • H01P1/201—Filters for transverse electromagnetic waves
    • H01P1/203—Strip line filters
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P1/00—Auxiliary devices
    • H01P1/20—Frequency-selective devices, e.g. filters
    • H01P1/207—Hollow waveguide filters
    • H01P1/208—Cascaded cavities; Cascaded resonators inside a hollow waveguide structure
    • 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

Definitions

  • the present invention relates to the field of electronic communication, and in particular to a duplexer for realizing a miniaturized quasi-strip line structure of a communication device.
  • the partial structure of the existing straight cavity alignment duplexer is as shown in FIGS. 1 and 2, and includes a duplexer body 1, a resonance column 2, a coupling rib 3, a cross-coupling copper piece 4, and a support member 5.
  • the main defects of the structure of FIG. 1 and FIG. 2 are as follows: 1.
  • the space volume is limited, and the mechanical structure of the cross-coupled copper piece 4 is complicated, and when the lateral distance of the duplexer body 1 is required to be smaller, the physical structure of the cross-coupled copper piece 4 may not be realized; 2.
  • the height of the coupling rib 3 may be too high, resulting in difficulty in processing, heavy volume, and high processing precision.
  • the object of the present invention is to provide a duplexer which is easy to realize cross-coupling and has good consistency, and realizes miniaturization and easy processing of a low-cost quasi-strip line structure, in view of the defects of the conventional straight cavity arrangement duplexer.
  • a duplexer with a quasi-strip line structure includes a duplexer body having an antenna port, a transmitting port, and a receiving port, wherein the duplexer has two filters in the body a cavity, the filter cavity has a plurality of resonant columns disposed on the ribs at the bottom of the filter cavity to form a quasi-strip line structure, and the cross section of the resonant column is provided with a cross-coupling copper piece.
  • the resonant column and the rib are an integrally formed structure that is similar in shape to a rectangular strip line.
  • a flange is provided at the top of the resonant column.
  • the top end of the resonant column has a top threaded port for fixing the flange, and the waist has a fixed cross coupling a side threaded hole of the copper piece; the bottom of the rib has a bottom threaded hole for fixing to the bottom of the duplexer body.
  • the flange is square or round.
  • the main feature of the invention is that the resonant column and the ribs are arranged like a rectangular quasi-belt line structure, which effectively solves the problem that the cross-coupling mechanical structure in the traditional straight cavity arrangement structure is difficult to realize, the coupling ribs are high, and the processing is complicated, and the realization is realized.
  • the duplexer is miniaturized.
  • 1 is a top view of a conventional straight cavity alignment duplexer.
  • FIG. 2 is a cross-sectional view of a conventional straight cavity alignment duplexer.
  • FIG. 3 is a partial schematic view of a quasi-strip line structure of the present invention.
  • Figure 4 is a plan view of the present invention.
  • Figure 5 is a cross-sectional view of the present invention.
  • Figure 6 is a perspective view of the present invention.
  • a partial schematic view of a duplexer with a quasi-strip line structure includes a resonant column 2, a rib 3, a bottom threaded hole 8, a top threaded hole 6, and a side threaded hole 7.
  • Resonant column 2 and rib 3 mainly achieve the electrical performance of the duplexer: frequency and bandwidth.
  • the bottom threaded hole 8 is for fixing
  • the top threaded hole 6 is for mounting the flange 9
  • the side threaded hole 7 is for mounting a cross-coupled inductor or capacitor.
  • 4-6 is an 800MHz duplexer using the quasi-strip line structure shown in FIG. 3, including a duplexer body 1, a rectangular strip line structure, a flange 9, and a cross-coupled copper piece 4, the duplex
  • the cross-coupling mechanical structure is easy to implement and the coupling ribs are low.
  • the duplexer has a relative bandwidth of 3.7% and an external dimension of 123.7 ⁇ 28.7 ⁇ 26 mm.
  • the technical solution of the present invention breaks the limitation of the duplexer design due to volume limitation, and realizes a small communication device. Purpose.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)

Abstract

Disclosed is a duplexer with a quasi-stripline structure. The duplexer comprises a duplexer body. The duplexer body is provided with an antenna port, a transmitting port and a receiving port, characterized in that the duplexer body is internally provided with two filtering cavities; a plurality of resonant columns are arranged in the filtering cavities, and the plurality of resonant columns are arranged on rib blocks at the bottoms of the filtering cavities, so as to form a quasi-stripline structure; and a cross-coupling copper member is arranged on the waists of the resonant columns. The present invention has the main characteristics that a resonant column and a rib block are arranged in a stripline structure similar to a rectangle; thereby effectively solving the problems of difficulty in achieving a cross-coupling mechanical structure in a traditional straight cavity arrangement structure, high coupled rib blocks, complexity in machining, etc., and achieving the miniaturization of duplexers.

Description

一种准带状线结构的双工器Duplexer with quasi-strip line structure 技术领域Technical field
本发明涉及电子通讯领域，特别是涉及一种实现通信设备的小型化的准带状线结构的双工器。The present invention relates to the field of electronic communication, and in particular to a duplexer for realizing a miniaturized quasi-strip line structure of a communication device.
背景技术Background technique
随着通信技术的发展，运营商对通信设备的体积要求越来越小，解决通信设备体积最有效的办法是减小通信设备中各个部件的体积，而射频前端双工器在通信设备中常占有相当大的体积。With the development of communication technology, operators have smaller and smaller requirements on the size of communication equipment. The most effective way to solve the volume of communication equipment is to reduce the volume of various components in the communication equipment, and the RF front-end duplexer often occupies in the communication equipment. Quite a large volume.
目前运营商不但要求双工器的电性能指标严格而且对产品的体积也要求小型化。鉴于这种情况直腔排列方式是十分有效的缩小体积手段。现有直腔排列双工器局部结构如图1、2所示，包括双工器本体1、谐振柱2、耦合筋块3以及交叉耦合铜片4、支撑件5。At present, operators not only require the electrical performance index of the duplexer to be strict but also require miniaturization of the volume of the product. In view of this situation, the straight cavity arrangement is a very effective means of reducing the volume. The partial structure of the existing straight cavity alignment duplexer is as shown in FIGS. 1 and 2, and includes a duplexer body 1, a resonance column 2, a coupling rib 3, a cross-coupling copper piece 4, and a support member 5.
图1、2结构主要缺陷为：1、空间体积受限导致交叉耦合铜片4机械结构复杂，且当双工器本体1横向距离要求更小时，可能导致交叉耦合铜片4物理结构不能实现；2、对于通带比较宽的双工器，耦合筋块3的高度可能太高导致加工难度大、体积重，而且加工精度要求高。这些都是直腔排列的小型化双工器设计局限性，而且物件加工成本会明显增加，失去市场竞争力。The main defects of the structure of FIG. 1 and FIG. 2 are as follows: 1. The space volume is limited, and the mechanical structure of the cross-coupled copper piece 4 is complicated, and when the lateral distance of the duplexer body 1 is required to be smaller, the physical structure of the cross-coupled copper piece 4 may not be realized; 2. For a duplexer with a wide passband, the height of the coupling rib 3 may be too high, resulting in difficulty in processing, heavy volume, and high processing precision. These are the design limitations of the miniaturized duplexer with straight cavity arrangement, and the processing cost of the object will increase significantly, losing market competitiveness.
发明内容Summary of the invention
本发明目的在于针对现有直腔排列方式双工器的缺陷，提供一种交叉耦合易实现且一致性好，实现小型化易加工低成本准带状线结构的双工器。The object of the present invention is to provide a duplexer which is easy to realize cross-coupling and has good consistency, and realizes miniaturization and easy processing of a low-cost quasi-strip line structure, in view of the defects of the conventional straight cavity arrangement duplexer.
本发明为实现上述目的，采用如下技术方案：In order to achieve the above object, the present invention adopts the following technical solutions:
一种准带状线结构的双工器，包括双工器本体，所述双工器本体上具有天线端口、发射端口和接收端口，其特征在于：所述双工器本体内具有两个滤波腔体，所述滤波腔体内具有多个谐振柱，所述多个谐振柱设置在滤波腔体底部的筋块上，形成准带状线结构，所述谐振柱腰部设置有交叉耦合铜片。A duplexer with a quasi-strip line structure includes a duplexer body having an antenna port, a transmitting port, and a receiving port, wherein the duplexer has two filters in the body a cavity, the filter cavity has a plurality of resonant columns disposed on the ribs at the bottom of the filter cavity to form a quasi-strip line structure, and the cross section of the resonant column is provided with a cross-coupling copper piece.
其进一步特征在于：所述谐振柱和筋块为一体成型的结构，该一体结构形状类似于矩形带状线。It is further characterized in that the resonant column and the rib are an integrally formed structure that is similar in shape to a rectangular strip line.
为了降低频率，所述谐振柱顶部设置有法兰盘。In order to reduce the frequency, a flange is provided at the top of the resonant column.
所述谐振柱顶端具有用于固定法兰盘的顶部螺纹口，腰部具有用于固定交叉耦合 铜片的侧边螺纹孔；所述筋块底部具有用于固定在双工器本体底部的底部螺纹孔。The top end of the resonant column has a top threaded port for fixing the flange, and the waist has a fixed cross coupling a side threaded hole of the copper piece; the bottom of the rib has a bottom threaded hole for fixing to the bottom of the duplexer body.
所述法兰盘为方型或圆型。The flange is square or round.
本发明主要特点是：将谐振柱和筋块设置成类似矩形准带状线结构，有效地解决了传统直腔排列结构中交叉耦合机械结构难实现，耦合筋块高，加工复杂等问题，实现了双工器小型化。The main feature of the invention is that the resonant column and the ribs are arranged like a rectangular quasi-belt line structure, which effectively solves the problem that the cross-coupling mechanical structure in the traditional straight cavity arrangement structure is difficult to realize, the coupling ribs are high, and the processing is complicated, and the realization is realized. The duplexer is miniaturized.
附图说明DRAWINGS
图1为现有直腔排列双工器俯视图。1 is a top view of a conventional straight cavity alignment duplexer.
图2为现有直腔排列双工器剖视图。2 is a cross-sectional view of a conventional straight cavity alignment duplexer.
图3为本发明准带状线结构局部示意图。3 is a partial schematic view of a quasi-strip line structure of the present invention.
图4为本发明俯视图。Figure 4 is a plan view of the present invention.
图5为本发明剖视图。Figure 5 is a cross-sectional view of the present invention.
图6为本发明立体图。Figure 6 is a perspective view of the present invention.
具体实施方式detailed description
下面结合具体实例对本发明进一步详细说明。The present invention will be further described in detail below with reference to specific examples.
如图3所示，一种准带状线结构的双工器的局部示意图：包括谐振柱2、筋块3，底部螺纹孔8，顶部螺纹孔6，侧边螺纹孔7。谐振柱2和筋块3主要实现双工器的电性能：频率和带宽。底部螺纹孔8用于固定，顶部螺纹孔6用于安装法兰盘9，侧边螺纹孔7安装交叉耦合电感或电容。As shown in FIG. 3, a partial schematic view of a duplexer with a quasi-strip line structure includes a resonant column 2, a rib 3, a bottom threaded hole 8, a top threaded hole 6, and a side threaded hole 7. Resonant column 2 and rib 3 mainly achieve the electrical performance of the duplexer: frequency and bandwidth. The bottom threaded hole 8 is for fixing, the top threaded hole 6 is for mounting the flange 9, and the side threaded hole 7 is for mounting a cross-coupled inductor or capacitor.
图4-6是采用图3所示准带状线结构的一个800MHz双工器，包括双工器本体1、矩形带状线结构、法兰盘9、以及交叉耦合铜片4，该双工器交叉耦合机械结构易实现，耦合筋块低。该双工器的相对带宽为3.7％，外形尺寸为123.7×28.7×26mm综上所述，采用本发明技术方案，打破了因体积受限导致双工器设计的局限性，实现了通信设备小型化的目的。4-6 is an 800MHz duplexer using the quasi-strip line structure shown in FIG. 3, including a duplexer body 1, a rectangular strip line structure, a flange 9, and a cross-coupled copper piece 4, the duplex The cross-coupling mechanical structure is easy to implement and the coupling ribs are low. The duplexer has a relative bandwidth of 3.7% and an external dimension of 123.7×28.7×26 mm. The technical solution of the present invention breaks the limitation of the duplexer design due to volume limitation, and realizes a small communication device. Purpose.
以上所述是结合具体的优选实施方式对本发明所作的进一步详细说明，不能认定本发明的具体实施只局限于这些说明。对于任何熟悉本技术及其领域的人，在不脱离本发明构思的前提下，可能做出各种推演或变更，都应当属于本新型的保护范围。 The above is a further detailed description of the present invention in connection with the specific preferred embodiments, and the specific embodiments of the present invention are not limited to the description. Any person skilled in the art and its fields may make various deductions or modifications without departing from the inventive concept, and should fall within the scope of protection of the present invention.

Claims (5)

  1. 一种准带状线结构的双工器，包括双工器本体，所述双工器本体上具有天线端口、发射端口和接收端口，其特征在于：所述双工器本体内具有两个滤波腔体，所述滤波腔体内具有多个谐振柱，所述多个谐振柱设置在滤波腔体底部的筋块上，形成准带状线结构，所述谐振柱腰部设置有交叉耦合铜片。A duplexer with a quasi-strip line structure includes a duplexer body having an antenna port, a transmitting port, and a receiving port, wherein the duplexer has two filters in the body a cavity, the filter cavity has a plurality of resonant columns disposed on the ribs at the bottom of the filter cavity to form a quasi-strip line structure, and the cross section of the resonant column is provided with a cross-coupling copper piece.
  2. 根据权利要求1所述的准带状线结构的双工器，其特征在于：所述谐振柱和筋块为一体成型的结构。The duplexer of a quasi-strip line structure according to claim 1, wherein the resonant column and the rib are integrally formed.
  3. 根据权利要求1或2所述的准带状线结构的双工器，其特征在于：所述谐振柱顶部设置有法兰盘。The duplexer of a quasi-strip line structure according to claim 1 or 2, characterized in that the top of the resonating column is provided with a flange.
  4. 根据权利要求3所述的准带状线结构的双工器，其特征在于：所述谐振柱顶端具有用于固定法兰盘的顶部螺纹口，腰部具有用于固定交叉耦合铜片的侧边螺纹孔；所述筋块底部具有用于固定在双工器本体底部的底部螺纹孔。The duplexer of the quasi-strip line structure according to claim 3, wherein the top end of the resonant column has a top threaded opening for fixing the flange, and the waist has a side for fixing the cross-coupled copper piece. a threaded hole; the bottom of the rib has a bottom threaded hole for fixing to the bottom of the duplexer body.
  5. 根据权利要求3所述的准带状线结构的双工器，其特征在于：所述法兰盘为方型或圆型。 The duplexer of a quasi-strip line structure according to claim 3, wherein the flange is square or round.
PCT/CN2016/080087 2015-11-25 2016-04-23 Duplexer with quasi-stripline structure WO2017088348A1 (en)

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CN105337004A (en) * 2015-11-25 2016-02-17 江苏贝孚德通讯科技股份有限公司 Duplexer with quasi-stripline structure
CN111786069B (en) * 2019-04-04 2021-09-21 上海诺基亚贝尔股份有限公司 Resonator and filter

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