WO2012003783A1 - 通信设备、介质滤波器和介质谐振杆 - Google Patents

通信设备、介质滤波器和介质谐振杆 Download PDF

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Publication number
WO2012003783A1
WO2012003783A1 PCT/CN2011/076731 CN2011076731W WO2012003783A1 WO 2012003783 A1 WO2012003783 A1 WO 2012003783A1 CN 2011076731 W CN2011076731 W CN 2011076731W WO 2012003783 A1 WO2012003783 A1 WO 2012003783A1
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WIPO (PCT)
Prior art keywords
dielectric
recessed space
cavity
rod
dielectric filter
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Application number
PCT/CN2011/076731
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English (en)
French (fr)
Inventor
孙尚传
童恩东
茹志云
Original Assignee
深圳市大富科技股份有限公司
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Publication of WO2012003783A1 publication Critical patent/WO2012003783A1/zh

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P7/00—Resonators of the waveguide type
    • H01P7/10—Dielectric resonators
    • 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
    • H01P1/2084—Cascaded cavities; Cascaded resonators inside a hollow waveguide structure with dielectric resonators

Definitions

  • the present invention relates to the field of filter technologies, and more particularly to communication devices, dielectric filters, and dielectric resonator bars.
  • Filters are widely used in the field of communications as a frequency selective device, especially in the field of radio frequency communications.
  • a filter is used to select a communication signal to filter out clutter or interference signals outside the frequency of the communication signal.
  • the filter generally includes a cavity and a resonant rod.
  • the cavity is provided with a plurality of resonant cavities, and one or more dielectric resonant rods are disposed in the resonant cavity.
  • the conventional resonant rod generally has a cylindrical shape.
  • the resonant rod 111 can be directly welded to the bottom surface 112 of the cavity; as shown in FIG. 1(b), the resonant rod 121 can also be first evaluated.
  • the base to which the resonant rod is welded is fixed to the bottom surface 122 of the cavity by screw locking.
  • the inventors of the present invention found that the resonance tube and the cavity are fixed by the welding method, which is inconvenient to assemble and disassemble and maintain, and the cost is high.
  • the communication device, the dielectric filter and the dielectric resonant rod provided by the invention can facilitate the assembly and disassembly and maintenance of the dielectric resonator rod and reduce the cost of the dielectric filter.
  • the present invention provides a dielectric filter including a cavity and a dielectric resonator.
  • the dielectric resonator includes a first end and a second end, and the first end is recessed toward the second end to form a first recessed space.
  • a fixed through hole is disposed on a bottom surface of a recessed space; the dielectric filter further includes a connecting nail, and the connecting nail passes through the fixed through hole to fix the dielectric resonant rod to the bottom surface of the cavity.
  • the present invention provides a communication device comprising the above-described dielectric filter for frequency selection of a communication signal.
  • the present invention also provides a dielectric resonator rod comprising a first end and a second end, wherein the first end is recessed toward the second end to form a first recessed space, and the bottom surface of the first recessed space is provided with a fixed through hole.
  • the dielectric resonant rod includes a first end and a second end, the first end is recessed inward to form a first recessed space, and the connecting nail of the dielectric filter passes through the fixed through hole on the bottom surface of the first recessed space to pass the medium
  • the resonant rod is fixed on the bottom surface of the cavity, and is relatively easy to assemble and disassemble and maintain, and has low production cost, compared with the conventional dielectric filter for soldering the dielectric resonant rod on the bottom surface of the cavity or pinging on the base.
  • 1(a) and 1(b) are schematic structural views of a dielectric filter in the prior art
  • FIG. 2 is a cross-sectional view showing a dielectric filter according to Embodiment 1 of the present invention.
  • FIG. 3 is a cross-sectional view showing a dielectric filter according to Embodiment 2 of the present invention.
  • FIG. 4(a) is a cross-sectional view showing the two dielectric resonator rods in the second embodiment of the present invention.
  • FIG. 4(b) is a cross-sectional view showing a dielectric filter according to Embodiment 2 of the present invention.
  • FIG. 5 is a schematic structural diagram of a dielectric filter according to Embodiment 3 of the present invention.
  • Embodiment 1 A dielectric filter comprising a cavity and a dielectric resonator rod, refer to FIG. 2:
  • the figure shows a case where there is a cavity in the dielectric filter, it being understood that the dielectric filter may also include a plurality of resonators.
  • the dielectric resonant rod 210 includes a first end 211 and a second end 212.
  • the first end 211 is recessed toward the second end 212 to form a recessed space 230.
  • the first recessed space 230 is provided with a fixed through hole on the bottom surface thereof.
  • the bottom surface of the first recessed space may be located at any height between the first end and the second end. Generally, the bottom surface of the first recessed space is closer to the second end, so that the first recess is empty.
  • the range between the two is larger, so that the adjustment range of the tuning screw is larger;
  • the fixed through hole is the connecting pin through hole, which may be a light hole, or may be a threaded hole or other conventional through hole.
  • the dielectric filter further includes a connecting stud 220 through which the connecting stud 220 secures the dielectric resonant rod to the bottom surface of the cavity.
  • the dielectric resonant rod includes a first end and a second end, and the connecting nail passes through the fixed through hole to fix the dielectric resonant rod on the bottom surface of the cavity, so that the bottom surface of the dielectric resonant rod is in contact with the bottom surface of the cavity.
  • the dielectric resonant rod can be reliably fixed in the resonant cavity of the dielectric filter, and at the same time, the connecting nail is used to fix the locking manner, and the intermediate shield resonant rod can be conveniently assembled and disassembled according to requirements in the later stage.
  • Embodiment 2 A dielectric filter, including a cavity and a dielectric resonator, refer to FIG. 3:
  • the dielectric resonant rod 310 includes a first end 311 and a second end 312.
  • the first end 311 is recessed toward the second end 312 to form a first recessed space 330.
  • the bottom surface of the first recessed space is provided with a fixed through hole.
  • the device further includes a connecting pin 320 through which the connecting pin 320 fixes the dielectric resonator rod to the bottom surface of the cavity.
  • the dielectric resonant rod may be integrally formed, for example, by die casting, a dielectric resonant rod with a first recessed space and a fixed through hole is integrally die-casted; the dielectric resonant rod may also be glued.
  • a plurality of medium parts are bonded and formed, and the same or different dielectric materials can be selected for each of the medium parts, and there are various bonding positions between the various parts.
  • FIG. 4(a) It should be understood that the two bonding positions shown in the above schematic diagram are only two preferred embodiments of the present embodiment, and the conventional modifications made by those skilled in the art are all within the protection scope of the present invention.
  • a mounting hole may be disposed on the bottom surface of the cavity for engaging the connecting pin to fix the dielectric resonator bar to the bottom surface of the cavity.
  • the aperture of the mounting hole is adapted to the size of the connecting pin so that the connecting pin can be securely fixed in the cavity.
  • the mounting hole can be directly disposed on the bottom surface of the cavity, or a mounting table can be arranged on the bottom surface of the cavity, and then a mounting hole is arranged on the mounting table.
  • an insulating dielectric spacer is disposed between the bottom surface of the first recessed space and the connecting nail.
  • the inner wall end of the fixed through hole may be chamfered.
  • the connecting nail adopts a countersunk screw, and the countersunk screw cooperates with the chamfer of the fixed through hole to make the resonant rod Coaxial with the fixed through hole of the cavity, and the use of the countersunk screw can cause the nail head of the screw to be chamfered, so that the space of the first recessed space is larger, and thus the later adjustment of the tuning screw is more Large adjustment range.
  • the chamfering process may be rounded or rounded, and the manner and extent of the particular chamfer may be set according to the structure and shape of the connecting studs, and does not constitute a limitation of the present invention.
  • the dielectric resonant rod includes a first end and a second end, and the connecting nail passes through the fixed through hole to fix the dielectric resonant rod on the bottom surface of the cavity, so that the bottom surface of the dielectric resonant rod is in contact with the bottom surface of the cavity, so that The dielectric resonant rod can be reliably fixed in the resonant cavity of the dielectric filter.
  • the connecting pin is used to fix the locking mode, and the dielectric resonant rod can be conveniently assembled and disassembled according to the needs in the later stage.
  • Embodiment 3 A dielectric filter comprising a cavity and a dielectric resonator rod, refer to FIG. 5:
  • the dielectric resonator 510 includes a first end 511 and a second end 512.
  • the first end 511 is recessed toward the second end 512 to form a first recessed space 530.
  • the bottom surface of the first recessed space is provided with a fixed through hole.
  • the device further includes a connecting pin 520 through which the connecting pin 520 fixes the dielectric resonator rod to the cavity bottom surface 531.
  • a mounting platform 532 is disposed on the bottom surface 531 of the cavity, and the mounting hole is disposed on the mounting platform, and the mounting hole is configured to cooperate with the connecting nail 520 to fix the dielectric resonant rod on the bottom surface of the cavity.
  • the second end 512 of the dielectric resonator rod is recessed toward the first end 511 to form a second recessed space, the second recessed space communicates with the first recessed space 530 through the fixed through hole, and the second recessed space is
  • the mounting platform 532 is adapted. This allows the mounting table to be housed in the second recessed space of the dielectric resonator rod, so that the dielectric resonator rod can be more reliably fixed in the cavity.
  • the second end of the dielectric resonator rod may not be recessed toward the first end, and the specific implementation participates in the second embodiment.
  • the connecting nail may be made of a metal material, such as stainless steel, or may be plastic.
  • a metal material such as stainless steel
  • plastic for example, POM (Polyoxymethylene), POM tensile strength, flexural strength, and fatigue strength. Both are high and have good physical, mechanical and chemical properties.
  • the dielectric resonant rod includes a first end and a second end, and the connecting nail passes through the fixed through hole to fix the dielectric resonant rod to the mounting base on the bottom surface of the cavity, so that the dielectric shield rod can be reliably fixed to the medium.
  • the connecting pin is used to fix the locking mode, and the dielectric resonant rod can be conveniently assembled and disassembled according to the needs in the later stage.
  • a dielectric resonant rod includes a first end and a second end. The first end is recessed toward the second end to form a first recessed space, and the bottom surface of the first recessed space is provided with a fixed through hole.
  • the dielectric resonant rod may be integrally formed, for example, by die casting, integrally forming a dielectric resonant rod with a first recessed space and a fixed through hole; the dielectric resonant rod may also be composed of thousands of mediums.
  • the components are bonded together, and the materials of the components may be the same or different. There are various bonding positions between the components. For the specific implementation, refer to the description in the second embodiment.
  • an insulating dielectric spacer may be disposed above the bottom surface of the first recessed space, and the insulating dielectric spacer is made of an insulating material, such as PTFE (PTFE Chinese name is polytetrafluoroethylene, English name Poly tetra Fluoroethylene), PTFE has an extremely low coefficient of friction, good wear resistance and excellent chemical stability. Therefore, an insulating dielectric gasket of PTFE material is preferred in this embodiment. It can be understood that the material, size, shape and thickness of the insulating dielectric spacer can be implemented in various ways as needed, and the specific implementation does not constitute a limitation of the present invention.
  • PTFE PTFE Chinese name is polytetrafluoroethylene, English name Poly tetra Fluoroethylene
  • the wear of the fixing member for fixing the dielectric resonant rod to the pallet can be reduced, and the fixing member can be reduced or even eliminated.
  • the gap between the bottom surface of the first recessed space and the bottom surface of the first recessed space makes the contact between the fixing member and the bottom surface of the first recessed space more reliable, thereby making the contact between the dielectric resonant rod and the bottom surface of the cavity more reliable.
  • the end surface of the dielectric resonator rod may be subjected to electroplating treatment, and the plating treatment may be one or more of silver plating, copper plating, and nickel plating.
  • the dielectric resonant rod provided in this embodiment includes a first end and a second end.
  • the first end is recessed toward the second end to form a first recessed space, and the bottom surface of the first recessed space is provided with a fixed through hole.
  • the fixing member can be fixed to the bottom surface of the cavity through the fixed through hole, so that the bottom surface of the dielectric resonant rod is in contact with the bottom surface of the cavity, so that the dielectric resonant rod can be It is reliably fixed in the cavity of the dielectric filter.
  • the dielectric resonator can be easily assembled and disassembled as needed.

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Abstract

本发明公开了通信设备、介质滤波器和介质谐振杆。本发明实施例提供的介质谐振杆包括第一端和第二端，第一端向第二端凹陷形成第一凹陷空间，所述第一凹陷空间底面上设置有固定通孔，介质滤波器的连接钉穿过所述固定通孔将介质谐振杆固定于腔体底面上，相对于现有的将介质谐振杆焊接在腔体底面上或焊接在底座上的介质滤波器，装拆与维护方便，生产成本低。

Description

通信设备、 介质滤波器和介质谐振杆
【技术领域】
本发明涉及滤波器技术领域， 更具体涉及通信设备、 介质滤波器和介质谐 振杆。
【背景技术】
滤波器作为一种频率选择装置被广泛应用于通信领域， 尤其是射频通信领 域。 在基站中， 滤波器用于选择通信信号， 滤除通信信号频率外的杂波或干扰 信号。
目前， 在移动通信系统中 , 普遍使用滤波器来对天线发射与接收的信号进 行频率选择。 滤波器通常包括腔体和谐振杆， 腔体内设有多个谐振腔， 谐振腔 中设置有一个或多个介质谐振杆。 在滤波器规模化生产中， 需要使用大批量的 谐振杆。 传统的谐振杆一般呈圓柱形， 如图 1(a)所示， 可以将谐振杆 111直接焊 接在腔体底面 112上； 如图 1(b)所示， 也可以先将谐振杆 121评接在底座 123 上， 再用螺钉锁紧的方式将焊接有谐振杆的底座固定在腔体底面 122上。
但是， 在对现有技术的研究和实践过程中， 本发明的发明人发现， 采用焊 接方式对谐振管与腔体进行固定， 不方便装拆与维护， 成本较高。
【发明内容】
本发明提供的通信设备、 介质滤波器和介质谐振杆， 可以方便介质谐振杆 装拆与维护， 降低介质滤波器的成本。
本发明提供一种介质滤波器， 包括腔体和介质谐振杆， 所述介质谐振杆包 括第一端和第二端， 所述第一端向第二端凹陷形成第一凹陷空间， 所述第一凹 陷空间底面上设置有固定通孔； 所述介质滤波器还包括连接钉， 所述连接钉穿 过所述固定通孔将所述介质谐振杆固定于腔体底面上。
本发明提供一种通信设备， 其包括上述的介盾滤波器， 该介质滤波器用于对 通信信号进行频率选择。
本发明还提供一种介质谐振杆， 包括第一端和第二端， 所述第一端向第二 端凹陷形成第一凹陷空间， 所述第一凹陷空间底面上设置有固定通孔。 本发明实施例中， 介质谐振杆包括第一端和第二端， 第一端向内凹陷形成 第一凹陷空间， 介质滤波器的连接钉穿过第一凹陷空间底面上的固定通孔将介 质谐振杆固定于腔体底面上， 相对于现有的将介质谐振杆焊接在腔体底面上或 坪接在底座上的介质滤波器， 装拆与维护方便， 生产成本低。
【附图说明】
为了更清楚地说明本发明实施例中的技术方案， 下面将对实施例描述中所 需要使用的附图作简单地介绍， 显而易见地， 下面描述中的附图仅仅是本发明 的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下， 还可以根据这些附图获得其他的附图。
图 1(a)和图 1(b)是现有技术中介质滤波器的结构示意图；
图 2是本发明实施例一中介质滤波器的剖视示意图；
图 3是本发明实施例二中介质滤波器的剖视示意图；
图 4(a)是本发明实施例二中两种介质谐振杆的剖视示意图；
图 4(b)是本发明实施例二中介质滤波器的剖视示意图；
图 5是本发明实施例三中介质滤波器的结构示意图。
【具体实施方式】
下面将结合本发明实施例中的附图， 对本发明实施例中的技术方案进行清 楚、 完整地描述， 显然， 所描述的实施例仅仅是本发明一部分实施例， 而不是 全部的实施例。 基于本发明中的实施例， 本领域普通技术人员在没有作出创造 性劳动前提下所获得的所有其他实施例， 都属于本发明保护的范围。
实施例一、 一种介质滤波器， 包括腔体和介质谐振杆， 参考图 2:
图中示出了介质滤波器中有一个谐振腔的情况 , 可以理解， 介质滤波器也 可以包括多个谐振腔。
介质谐振杆 210包括第一端 211和第二端 212, 所述第一端 211 向第二端 212凹陷形成笫一凹陷空间 230，所述第一凹陷空间 230底面上设置有固定通孔。
本发明实施例中， 第一凹陷空间底面可以位于第一端与第二端之间的任意 高度上， 通常情况下， 第一凹陷空间的底面更靠近第二端， 以便使第一凹陷空 间的范围更大， 从而使得调谐螺钉的调节范围更大； 所述固定通孔是所述连接 钉过孔， 可以是光孔， 也可以是螺紋孔或其他常规通孔。
介质滤波器还包括连接钉 220,所述连接钉 220穿过所述固定通孔将所述介 质谐振杆固定于腔体底面上。
本发明实施例一中， 介质谐振杆包括第一端和第二端， 连接钉穿过固定通 孔将介质谐振杆固定于腔体底面上， 使介质谐振杆的底面与腔体底面相接触， 这样就可以将介质谐振杆可靠固定在介质滤波器的谐振腔内， 同时， 采用连接 钉固定锁紧的方式， 在后期可以根据需要， 方便地装拆与维护介盾谐振杆。
实施例二、 一种介质滤波器， 包括腔体和介质谐振杆， 参考图 3:
介质谐振杆 310包括第一端 311和第二端 312， 所述第一端 311 向第二端 312凹陷形成第一凹陷空间 330, 所述第一凹陷空间底面上设置有固定通孔； 介 质滤波器还包括连接钉 320，连接钉 320穿过所述固定通孔将所述介质谐振杆固 定于腔体底面上。
在本实施例中， 介质谐振杆可以一体成型， 例如采用压力铸造的方式整体 压铸成型出带有第一凹陷空间以及固定通孔的介廣谐振杆； 所述介廣谐振杆也 可以用胶将若干个介质部件粘接形成， 各个介质部件可以选用相同或不同的介 质材料， 各个部件之间的粘接位置有多种， 具体的实现方式可以参考介质谐振 杆的剖视示意图图 4(a), 可以理解， 以上示意图示出的两种粘接位置只是本实施 例的两种优选实施方式， 本领域的技术人员在此基础上作出的常规变形均在本 发明的保护范围之内。
在本实施例中， 腔体底面上可以设置安装孔， 用于与所述连接钉配合将所 述介质谐振杆固定于腔体底面上。 安装孔的孔径与连接钉的大小相适应， 使得 连接钉能够可靠地固定在谐振腔内。 安装孔可以直接设置在腔体底面上， 也可 以在腔体底面上设置安装台， 再在安装台上设置安装孔， 通过在腔体底面上设 置安装台， 可以在不加厚腔体底面的情况下， 增加安装孔的轴向高度， 使得连 接钉进入腔体底面的深度更大， 进而使得介质谐振杆与腔体底面的接触更加可 靠。
在本实施例中， 第一凹陷空间底面与连接钉之间设置有绝缘介质垫片。 通 过在第一凹陷空间底面与连接钉之间设置绝缘介质垫片， 在装拆连接钉时， 可 以减少钉头对介质滤波器的磨损， 并且可以增加连接钉的稳固性， 以及使连接 钉与垫片之间、 垫片与第一凹陷空间底面之间更可靠地接触。
在本实施例中， 可以在固定通孔的内壁端部做倒角， 如图 4(b)所示， 连接钉 采用沉头螺钉， 沉头螺钉与固定通孔的倒角配合， 使谐振杆与腔体的固定通孔 同轴， 并且， 釆用沉头螺钉可以使螺钉的钉头陷入倒角， 从而使得第一凹陷空 间的空间体积更大， 进而使得后期釆用调谐螺钉调节时有更大的调节范围。 当 然， 所述倒角处理可以是倒圓角或倒直角 , 具体的倒角的方式和程度可以根据 连接钉的结构和形状进行设置 , 不构成对本发明的限制。
本实施例中， 介质谐振杆包括第一端和第二端， 连接钉穿过固定通孔将介 质谐振杆固定于腔体底面上， 使介质谐振杆的底面与腔体底面相接触， 这样就 可以将介质谐振杆可靠固定在介质滤波器的谐振腔内， 同时， 采用连接钉固定 锁紧的方式， 在后期可以根据需要， 方便地装拆与维护介质谐振杆。
实施例三、 一种介质滤波器， 包括腔体和介质谐振杆， 参考图 5:
介质谐振杆 510包括第一端 511和第二端 512， 所述第一端 511 向第二端 512凹陷形成第一凹陷空间 530, 所述第一凹陷空间底面上设置有固定通孔； 介 质滤波器还包括连接钉 520，连接钉 520穿过所述固定通孔将所述介质谐振杆固 定于腔体底面 531上。
腔体底面 531上设置有安装台 532, 所述安装孔设置在所述安装台上，安装 孔用于与连接钉 520配合将所述介质谐振杆固定于腔体底面上。
介质谐振杆的第二端 512向第一端 511 凹陷形成第二凹陷空间， 所述第二 凹陷空间与所述第一凹陷空间 530通过所述固定通孔连通， 并且所述第二凹陷 空间与所述安装台 532相适应。 这样就使得安装台收容在介质谐振杆的第二凹 陷空间内， 从而介质谐振杆能够更加可靠地固定在腔体内。 当然， 介质谐振杆 的第二端也可以不向第一端凹陷， 具体实现方式参加实施例二。
在本实施例中， 所述连接钉的材质可以采用金属材料， 例如不锈钢， 也可 以釆用塑胶， 例如， POM ( Polyoxymethylene, 聚曱醛）， POM 的抗拉强度、 抗弯曲强度、 耐疲劳强度均较高， 具有良好的物理、 机械和化学性能。
本实施例中， 介质谐振杆包括第一端和第二端， 连接钉穿过固定通孔将介 质谐振杆固定于腔体底面的安装台上， 这样就可以将介盾谐振杆可靠固定在介 质滤波器的谐振腔内， 同时， 采用连接钉固定锁紧的方式， 在后期可以根据需 要， 方便地装拆与维护介质谐振杆。 实施例四、 一种介质谐振杆， 包括第一端和第二端， 所述第一端向第二端 凹陷形成第一凹陷空间， 所述第一凹陷空间底面上设置有固定通孔。
在本实施例中， 介质谐振杆可以一体成型， 例如采用压力铸造的方式整体 压铸成型出带有第一凹陷空间以及固定通孔的介质谐振杆； 所述介质谐振杆也 可以由若千个介质部件粘接而成， 各个部件的材质可以相同或不同， 各个部件 之间的粘接位置有多种， 具体的实现方式可以参考实施例二中的描述。
在本实施例中， 所述第一凹陷空间底面的上方可以设置绝缘介廣垫片， 绝 缘介质垫片釆用绝缘材料制成 , 例如 PTFE(PTFE中文名称为聚四氟乙烯， 英文 名 Poly tetra fluoro ethylene), PTFE有极低的摩擦系数、 良好的耐磨性以及极好 的化学稳定性， 因此， 本实施例优选的采用 PTFE材料的绝缘介质垫片。 可以理 解， 绝缘介质垫片的材料、 大小、 形状、 厚度可以根据需要有多种实现方式， 具体的实现方式不构成对本发明的限制。 通过在第一凹陷空间底面的上方设置 绝缘介质垫片， 在后续工艺中固定介质谐振杆时， 可以减少用于固定介质谐振 杆的固定部件对托台的磨损， 并且可以减小甚至消除固定部件与第一凹陷空间 底面之间的缝隙， 使得固定部件与第一凹陷空间底面之间的接触更加可靠， 进 而使得介质谐振杆与腔体底面之间的接触更加可靠。
本实施例中， 介质谐振杆的端部表面可以进行电镀处理， 电镀处理的方式 可以采用镀银、 镀铜、 镀镍中的一种或几种。
本实施例提供的介质谐振杆， 包括第一端和第二端， 第一端向第二端凹陷 形成第一凹陷空间， 第一凹陷空间底面上设置有固定通孔。 在后续工艺中固定 介质谐振杆时， 可以使固定部件穿过固定通孔将介质谐振杆固定于腔体底面上， 使介质谐振杆的底面与腔体底面相接触， 这样就可以将介质谐振杆可靠固定在 介质滤波器的谐振腔内，在后期可以根据需要，方便地装拆与维护介质谐振杆。
以上对本发明实施例所提供的介质滤波器和介质谐振杆进行了详细介绍， 本文中应用了具体个例对本发明的原理及实施方式进行了阐述， 以上实施例的 说明只是用于帮助理解本发明的核心思想； 同时，对于本领域的一般技术人员， 依据本发明的思想，在具体实施方式及应用范围上均会有改变之处，综上所述， 本说明书内容不应理解为对本发明的限制。

Claims

权利 要求
1、 谐振杆包括第一端和第二端， 所述第一端向第二端凹陷形成第一凹陷空 间，所述第一凹陷空间底面上设置有固定通孔；所述介质滤波器还包括连接钉， 所述连接钉穿过所述固定通孔将所述介质谐振杆固定于腔体底面上。
2、 如权利要求 1所述的介质滤波器， 其特征在于， 所述介质谐振杆一体成 型或由若干个介质部件粘接而成。
3、 如权利要求 1所述的介质滤波器， 其特征在于， 所述腔体底面上设置有 安装孔， 用于与所述连接钉配合将所述介质谐振杆固定于腔体底面上。
4、 如权利要求 3所述的介质滤波器， 其特征在于， 所述腔体底面上设置有 安装台， 所述安装孔设置在所述安装台上。
5、 如权利要求 4所述的介质滤波器， 其特征在于， 所述介质谐振杆的第二 端向第一端凹陷形成第二凹陷空间， 所述第二凹陷空间与所述第一凹陷空间通 过所述固定通孔连通， 并且所述第二凹陷空间与所述安装台相适应。
6、 如权利要求 1至 5任意一项所述的介质滤波器， 其特征在于， 所述第一 凹陷空间底面与连接钉之间设置有绝缘介质垫片。
7、 如权利要求 1至 5任意一项所述的介质滤波器， 其特征在于， 所述固定 通孔的内壁端部倒角。
8、 如权利要求 1至 5任意一项所述的介质滤波器， 其特征在于， 所述连接 钉的材质是塑胶。
9、 一种通信设备， 其特征在于， 所述通信设备包括根据权利要求 1至 8中 任意一项所述的介质滤波器， 所述介质滤波器用于对通信信号进行频率选择。
10、一种介质谐振杆， 其特征在于， 所述介质谐振杆包括第一端和第二端， 所述第一端向第二端凹陷形成第一凹陷空间， 所述第一凹陷空间底面上设置有 固定通孔。
11、 如权利要求 10所述的介质谐振杆， 其特征在于， 所述介盾谐振杆一体 成型或由若干个介质部件粘接而成。
12、 如权利要求 10或 11所述的介质谐振杆， 其特征在于， 所述第一凹陷 空间底面的上方设置有绝缘介质垫片。
13、 如权利要求 10或 11所述的介质谐振杆， 其特征在于， 所述介质谐振 杆端部表面镀银或镀铜或镀镍。
PCT/CN2011/076731 2010-07-05 2011-06-30 通信设备、介质滤波器和介质谐振杆 WO2012003783A1 (zh)

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