WO2013117072A1 - Mid-frequency band high-power cavity filter - Google Patents

Mid-frequency band high-power cavity filter Download PDF

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Publication number
WO2013117072A1
WO2013117072A1 PCT/CN2012/078474 CN2012078474W WO2013117072A1 WO 2013117072 A1 WO2013117072 A1 WO 2013117072A1 CN 2012078474 W CN2012078474 W CN 2012078474W WO 2013117072 A1 WO2013117072 A1 WO 2013117072A1
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WO
WIPO (PCT)
Prior art keywords
cavity
metal heat
resonant rod
resonant
filter
Prior art date
Application number
PCT/CN2012/078474
Other languages
French (fr)
Chinese (zh)
Inventor
孟庆南
朱晖
胡文伟
Original Assignee
武汉凡谷电子技术股份有限公司
Priority date (The priority date 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 date listed.)
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Priority claimed from CN 201220039239 external-priority patent/CN202454699U/en
Priority claimed from CN2012100268181A external-priority patent/CN102569957A/en
Priority claimed from CN2012100268317A external-priority patent/CN102709629A/en
Priority claimed from CN2012100268177A external-priority patent/CN102544656A/en
Priority claimed from CN2012100268209A external-priority patent/CN102544657A/en
Application filed by 武汉凡谷电子技术股份有限公司 filed Critical 武汉凡谷电子技术股份有限公司
Publication of WO2013117072A1 publication Critical patent/WO2013117072A1/en

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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
    • H01P7/04—Coaxial 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
    • H01P1/201—Filters for transverse electromagnetic waves
    • H01P1/205—Comb or interdigital filters; Cascaded coaxial cavities
    • H01P1/2053—Comb or interdigital filters; Cascaded coaxial cavities the coaxial cavity resonators being disposed parall to each other

Definitions

  • the invention belongs to the technical field of electrical components for the communication industry, and particularly relates to a medium frequency band high power cavity filter. Background technique
  • the cavity filter is usually used to filter the interference signal or the clutter signal in a specific frequency range.
  • the existing cavity filter is generally made of precious metals such as aluminum and copper, which is not only heavy, but also disadvantageous for installation, disassembly and transportation. Moreover, due to the high price of precious metals, the cost of the cavity filter is relatively high. Therefore, each filter manufacturer is investing a lot of energy to continuously develop new technologies and processes to reduce the production cost of the enterprise. Among various cost reduction schemes, the solution of using a plastic material to form a filter cavity is a reasonable solution. Compared with the metal filter cavity, the plastic cavity has a lighter weight and stronger Rigid performance is not susceptible to external temperature changes, and is increasingly valued by various filter manufacturers.
  • An object of the present invention is to provide a mid-band high power cavity filter which can solve the heat dissipation problem of a plastic filter, reduce the production cost of the filter, and has good electrical performance.
  • a mid-band high-power cavity filter designed by the present invention includes a cavity and a cavity cover, a cavity is disposed in the cavity, and a resonant rod is mounted in the cavity, the cavity A tuning screw is mounted on the cover plate, the cavity is made of a plastic material, a top end of the resonant rod is provided with a resonant disc, and a bottom end of the resonant rod is connected with a metal heat conducting member, and the metal heat conducting member passes through the cavity.
  • a metal heat sink is connected to the lower bottom surface, the resonant rod and the metal heat conductive member
  • the resonant rod is connected by a connecting member, the resonant rod is a hollow structure, the diameter of the upper hollow portion is larger than the diameter of the lower hollow portion, and the joint between the upper hollow portion and the lower hollow portion constitutes a positioning boss of the positioning connecting member.
  • the bottom end of the resonant rod is provided with a ring boss.
  • a middle portion of the metal heat conducting member is provided with a boss, and a bottom surface of the boss is fitted to an upper surface of the bottom surface of the cavity.
  • the metal heat conductive member and the metal heat sink are integrally formed.
  • the metal heat conducting member and the metal heat sink are integrally injection molded with the lower bottom surface of the cavity.
  • the present invention connects the bottom end of the resonant rod with the metal heat conductive member.
  • the metal heat-conducting member is connected to the metal heat-dissipating plate on the outer surface of the cavity, and utilizes the high thermal conductivity of the metal to conduct and dissipate most of the heat inside the plastic cavity to the space around the outside of the plastic cavity, thereby effectively reducing the plastic cavity.
  • the heat accumulated inside the body, and the plastic cavity in the high-power filter can maintain good electrical performance.
  • the heat inside the plastic cavity in the mid-band filter with an average power of 120W or more can radiate into the space outside the cavity in time to reduce the temperature inside the plastic cavity, and has good electrical performance.
  • the ingenious connection between the metal heat conductive member of the present invention and the metal heat sink and the resonant rod can be greatly reduced.
  • the production cost of the filter is easy to assemble and manufacture.
  • Figure 1 is a schematic view of the structure of the present invention
  • FIG. 2 is a schematic structural view of a resonant rod of the present invention
  • FIG. 3 is a schematic structural view of the metal heat conductive member and the metal heat sink of the present invention integrally formed;
  • the general solution of the present invention is to provide a metal heat sink on the outer surface of the bottom of the cavity, and the bottom end of the resonant rod is made of gold.
  • the heat sink is connected, and the heat inside the plastic cavity is radiated to the outside of the cavity through the metal heat sink having a larger area, and the temperature inside the plastic cavity is lowered.
  • a single-cavity filter is taken as an example to explain in detail Technical solution of the invention.
  • the medium-frequency high-power cavity filter shown in FIG. 1 includes a cavity 1 and a cavity cover 2, and a cavity 3 is disposed in the cavity 1, and a resonant rod 4 is mounted in the cavity 3, and the cavity cover is installed.
  • 2 is equipped with a tuning screw 5, the cavity 1 is made of plastic material, the cavity cover 2, the resonant rod 4, the tuning screw 5 are made of metal, the resonant rod 4 is a hollow hollow structure, and the tuning screw 5 is facing the resonant rod 4. Hollow, by adjusting the depth of the hollow of the tuning rod 5 to the hollow of the resonant rod 4, the frequency of the cavity filter can be adjusted, and the metal heat conducting member 7 and the metal heat sink 8 are integrally injection molded with the lower surface of the cavity 1.
  • the top end of the resonant rod 4 is provided with a circular resonant disk 6, which changes the direct size of the resonant disk 6, and the frequency of the cavity filter can be adjusted.
  • the bottom end of the resonant rod 4 is connected with a metal heat conducting member 7, and the metal heat conducting member is passed through the lower bottom surface of the cavity 1 to which a metal heat sink 8 is connected.
  • the resonant rod 4 is connected to the metal heat conducting member 7 through the connecting member 12.
  • the connecting member 12 is a metal bolt or a metal screw.
  • the upper end of the connecting member 12 is a large end portion, and the diameter of the upper hollow portion 4.1 of the resonant rod 4 is larger than the diameter of the lower hollow portion 4.2.
  • connection between the upper hollow portion 4.1 and the lower hollow portion 4.2 constitutes a positioning boss 9 of the positioning connector 12, so that the upper end of the connecting member 12 is caught at the positioning boss 9, so that the resonant rod 4 is connected to the metal heat conducting member ⁇ To be firm.
  • the bottom end of the resonant rod 4 is provided with a ring boss 10, and the resonant rod 4 is in ring contact with the metal heat conducting member 7, so that under the condition that the upper end surface of the metal heat conducting member 7 is smooth, the bottom surface of the resonant rod 4 and the metal heat conducting member The upper end of the 7 is still in good contact, reducing the process requirements and saving production costs.
  • the metal heat conducting member 7 and the metal heat sink 8 are integrally formed, and the metal heat conducting member 7 and the metal heat sink 8 are injection molded on the lower bottom surface of the cavity 1.
  • the middle portion of the metal heat conducting member 7 is provided with a boss 11 as shown in FIG.
  • the bottom surface of the table 11 is attached to the upper surface of the bottom surface of the cavity 1 for convenient positioning.
  • the metal heat sink 8 is a circular metal foil having a cross-sectional area larger than the cross-sectional area of the metal heat conductive member 7, and the area is large and heat-dissipating, the temperature of the interior of the plastic cavity can be well lowered, and the metal heat sink 8 is located in the cavity.
  • the bottom outer surface of 1 is well positioned, and the upper surface of the metal heat sink 8 is attached to the bottom outer surface of the cavity 1.
  • the invention is also suitable for a filter of a plurality of cavities, and can adjust the filter frequency by adjusting the size and position of the metal resonance disk 6, and the depth of the cavity of the cavity 3. It is suitable for the middle frequency band using the frequency band 300M-900M. High power cavity filter.
  • the metal heat sink 4 and the metal heat conductive member 5 of the present invention can be made of aluminum having a good thermal conductivity.
  • the contents not described in detail in the present specification belong to the prior art known to those skilled in the art.

Abstract

The present invention relates to a mid-frequency band high-power cavity filter comprising a cavity and a cavity cover. The cavity is provided therein with a resonator cavity. The resonator cavity has arranged therein a resonant rod. The cavity cover has arranged thereon a tuning screw. The cavity is made of a plastic material. The resonant rod has arranged at the top thereof a resonant disc. The resonant rod is connected at the bottom thereof to a thermally conductive metal piece. The thermally conductive metal piece penetrates the bottom face of the cavity to connect to a metal heat-dissipating plate. The resonant rod and the thermally conductive metal piece are connected via a connecting piece. The resonant rod is a hollow structure, where the diameter of the hollow upper part is greater than the diameter of the hollow lower part, while the junction at where the hollow upper part and the hollow lower part are connected constitutes a positioning boss for positioning the connecting piece. The present invention effectively reduces heat accumulated within the plastic cavity, and employs the plastic cavity in the high-power filter, thus maintaining great electrical performance, reducing greatly manufacturing costs of the filter, and is easy to assemble and manufacture.

Description

中频段大功率腔体滤波器 技术领域  Mid-band high power cavity filter
本发明属于通信行业用电气元件技术领域，具体涉及一种中频段大功率腔体滤波器。 背景技术  The invention belongs to the technical field of electrical components for the communication industry, and particularly relates to a medium frequency band high power cavity filter. Background technique
通信系统中通常采用腔体滤波器将特定频率范围的干扰信号或杂波信号滤除， 现有 腔体滤波器一般采用铝、铜等贵重金属制作， 不仅重量大、 不利于安装、拆卸以及运输， 而且由于贵重金属的价格较高， 导致腔体滤波器的成本较高， 因此， 各家滤波器厂商都 在投入大量精力不断地开拓新技术和新工艺， 以减轻企业生产成本。 在各种降成本方案 中， 采用塑料材质制作滤波器腔体的方案是一种比较合理的方案， 该方案相对金属滤波 器腔体来说， 由于塑料腔体具有较轻的重量、 较强的刚性性能， 不易受到外界温度变化 的影响， 而越来越受到各家滤波器厂商的重视。  In the communication system, the cavity filter is usually used to filter the interference signal or the clutter signal in a specific frequency range. The existing cavity filter is generally made of precious metals such as aluminum and copper, which is not only heavy, but also disadvantageous for installation, disassembly and transportation. Moreover, due to the high price of precious metals, the cost of the cavity filter is relatively high. Therefore, each filter manufacturer is investing a lot of energy to continuously develop new technologies and processes to reduce the production cost of the enterprise. Among various cost reduction schemes, the solution of using a plastic material to form a filter cavity is a reasonable solution. Compared with the metal filter cavity, the plastic cavity has a lighter weight and stronger Rigid performance is not susceptible to external temperature changes, and is increasingly valued by various filter manufacturers.
然而， 塑料的热传导性能比金属要差， 在大功率腔体滤波器使用过程中， 积聚在塑 料腔体内部的热量不能及时散发出去， 会导致局部温度越来越高而使中频段大功率腔体 滤波器整体功能失效； 尤其对于大功率滤波器而言， 塑料腔体内部在短时间内会积聚较 多热量， 而不能及时散发出去， 导致中频段大功率腔体滤波器的电气性能指标下降， 不 能满足工作的需求， 现有的中频段大功率腔体滤波器中， 只能在很小频率的滤波器中使 用塑料腔体， 稍大功率的滤波器， 根本无法采用塑料腔体的方案以降低企业生产成本的 压力， 塑料腔体的散热问题一直以来严重地制约着大功率腔体滤波器的发展进程。 发明内容  However, the thermal conductivity of plastics is worse than that of metals. During the use of high-power cavity filters, the heat accumulated inside the plastic cavity cannot be dissipated in time, which will result in higher local temperature and higher frequency cavity in the middle frequency band. The overall function of the bulk filter is invalid; especially for high-power filters, the inside of the plastic cavity will accumulate more heat in a short time, but it will not be dissipated in time, resulting in a decrease in the electrical performance index of the high-frequency cavity filter in the middle frequency band. Can not meet the needs of work, in the existing mid-band high-power cavity filter, only the plastic cavity can be used in the filter of small frequency, the filter with slightly higher power, the solution of plastic cavity can not be used at all. In order to reduce the pressure on the production cost of enterprises, the heat dissipation problem of plastic chambers has seriously restricted the development of high-power cavity filters. Summary of the invention
本发明的目的是提供一种能够很好解决塑料滤波器的散热问题， 降低滤波器的生产 成本， 而且并具有很好电气性能的中频段大功率腔体滤波器。  SUMMARY OF THE INVENTION An object of the present invention is to provide a mid-band high power cavity filter which can solve the heat dissipation problem of a plastic filter, reduce the production cost of the filter, and has good electrical performance.
为实现上述目的， 本发明设计的一种中频段大功率腔体滤波器， 包括腔体和腔体盖 板， 所述腔体内设有谐振腔， 谐振腔内安装有谐振杆， 所述腔体盖板上安装有调谐螺杆， 所述腔体为塑料材质， 所述谐振杆的顶端设有谐振盘， 所述谐振杆的底端连接有金属导 热件， 所述金属导热件穿过腔体的下底面连接有金属散热板， 所述谐振杆与金属导热件 通过连接件连接， 所述谐振杆为空心结构， 其上部空心的直径大于下部空心的直径， 所 述上部空心与下部空心的连接处构成定位连接件的定位凸台。 In order to achieve the above object, a mid-band high-power cavity filter designed by the present invention includes a cavity and a cavity cover, a cavity is disposed in the cavity, and a resonant rod is mounted in the cavity, the cavity A tuning screw is mounted on the cover plate, the cavity is made of a plastic material, a top end of the resonant rod is provided with a resonant disc, and a bottom end of the resonant rod is connected with a metal heat conducting member, and the metal heat conducting member passes through the cavity. a metal heat sink is connected to the lower bottom surface, the resonant rod and the metal heat conductive member The resonant rod is connected by a connecting member, the resonant rod is a hollow structure, the diameter of the upper hollow portion is larger than the diameter of the lower hollow portion, and the joint between the upper hollow portion and the lower hollow portion constitutes a positioning boss of the positioning connecting member.
进一步地， 所述谐振杆的底端设有圆环凸台。  Further, the bottom end of the resonant rod is provided with a ring boss.
进一步地， 所述金属导热件的中部设有凸台， 所述凸台下底面与腔体底面的上表面 贴合。  Further, a middle portion of the metal heat conducting member is provided with a boss, and a bottom surface of the boss is fitted to an upper surface of the bottom surface of the cavity.
再进一步地， 所述金属导热件和金属散热板一体成型。  Still further, the metal heat conductive member and the metal heat sink are integrally formed.
更进一步地， 所述金属导热件和金属散热板与腔体的下底面上一体注塑成型。  Further, the metal heat conducting member and the metal heat sink are integrally injection molded with the lower bottom surface of the cavity.
本申请的发明人通过不断地潜心研究发现如下规律， 腔体滤波器工作过程中， 腔体 内部的主要热量来源于谐振杆， 基于这一规律， 本发明将谐振杆的底端与金属导热件连 接， 金属导热件与位于腔体外表面的金属散热板连接， 利用金属导热率高的特性， 将塑 料腔体内部的大部分热量传导并散发到塑料腔体外部周围的空间， 有效降低了塑料腔体 内部积聚的热量， 并且在大功率滤波器中采用塑料腔体， 能够保持很好地电气性能， 通 过现场测试实验， 在平均功率为 120W以上的中频段滤波器中， 塑料腔体内部的热量能 及时辐射到腔体外部的空间而降低塑料腔体内部的温度， 具备很好的电气性能， 同时本 发明的金属导热件与金属散热板、 以及谐振杆之间巧妙的连接方式， 能够大大降低滤波 器的生产成本， 并且易于装配、 制造。 附图说明  The inventor of the present application has found through continual research that the main heat inside the cavity is derived from the resonant rod during the operation of the cavity filter. Based on this rule, the present invention connects the bottom end of the resonant rod with the metal heat conductive member. The metal heat-conducting member is connected to the metal heat-dissipating plate on the outer surface of the cavity, and utilizes the high thermal conductivity of the metal to conduct and dissipate most of the heat inside the plastic cavity to the space around the outside of the plastic cavity, thereby effectively reducing the plastic cavity. The heat accumulated inside the body, and the plastic cavity in the high-power filter, can maintain good electrical performance. Through field test experiments, the heat inside the plastic cavity in the mid-band filter with an average power of 120W or more It can radiate into the space outside the cavity in time to reduce the temperature inside the plastic cavity, and has good electrical performance. At the same time, the ingenious connection between the metal heat conductive member of the present invention and the metal heat sink and the resonant rod can be greatly reduced. The production cost of the filter is easy to assemble and manufacture. DRAWINGS
图 1是本发明的结构示意图；  Figure 1 is a schematic view of the structure of the present invention;
图 2是本发明的谐振杆结构示意图；  2 is a schematic structural view of a resonant rod of the present invention;
图 3是本发明的金属导热件和金属散热板一体成型的结构示意图；  3 is a schematic structural view of the metal heat conductive member and the metal heat sink of the present invention integrally formed;
图中： 1-腔体、 2-腔体盖板、 3-谐振腔、 4-谐振杆 （4.1-上部空心、 4.2-下部空心）、 5-调谐螺杆、 6-谐振盘、 7-金属导热件、 8-金属散热板、 9-定位凸台、 10-圆环凸台、 11- 凸台。 具体实施方式  In the figure: 1-cavity, 2-cavity cover, 3-resonant cavity, 4-resonant rod (4.1-upper hollow, 4.2-lower hollow), 5-tuning screw, 6-resonant disk, 7-metal heat conduction Pieces, 8-metal heat sink, 9-position boss, 10-ring boss, 11- boss. detailed description
以下结合附图和具体实施例对本发明作进一步的详细描述：  The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:
本发明的总体方案是， 在腔体的底部外表面设置金属散热板， 将谐振杆的底端与金 属散热板连接， 通过面积较大的金属散热板， 将塑料腔体内部的热量散发到腔体外面， 降低塑料腔体的内部的温度，本实施例以单腔滤波器为例，详细说明本发明的技术方案。 The general solution of the present invention is to provide a metal heat sink on the outer surface of the bottom of the cavity, and the bottom end of the resonant rod is made of gold. The heat sink is connected, and the heat inside the plastic cavity is radiated to the outside of the cavity through the metal heat sink having a larger area, and the temperature inside the plastic cavity is lowered. In this embodiment, a single-cavity filter is taken as an example to explain in detail Technical solution of the invention.
如图 1所示的中频段大功率腔体滤波器， 包括腔体 1和腔体盖板 2， 腔体 1内设有 谐振腔 3， 谐振腔 3内安装有谐振杆 4， 腔体盖板 2上安装有调谐螺杆 5， 腔体 1为塑料 材质， 腔体盖板 2、 谐振杆 4、 调谐螺杆 5为金属材质， 谐振杆 4为中空的空心结构， 调 谐螺杆 5正对谐振杆 4的空心， 通过调节调谐螺杆 5深入到谐振杆 4的空心的深度， 可 调节腔体滤波器的频率， 金属导热件 7和金属散热板 8与腔体 1的下底面上一体注塑成 型。  The medium-frequency high-power cavity filter shown in FIG. 1 includes a cavity 1 and a cavity cover 2, and a cavity 3 is disposed in the cavity 1, and a resonant rod 4 is mounted in the cavity 3, and the cavity cover is installed. 2 is equipped with a tuning screw 5, the cavity 1 is made of plastic material, the cavity cover 2, the resonant rod 4, the tuning screw 5 are made of metal, the resonant rod 4 is a hollow hollow structure, and the tuning screw 5 is facing the resonant rod 4. Hollow, by adjusting the depth of the hollow of the tuning rod 5 to the hollow of the resonant rod 4, the frequency of the cavity filter can be adjusted, and the metal heat conducting member 7 and the metal heat sink 8 are integrally injection molded with the lower surface of the cavity 1.
谐振杆 4的顶端设有圆环形的谐振盘 6， 改变谐振盘 6的直接大小， 可调节腔体滤 波器的频率。 谐振杆 4的底端连接有金属导热件 7， 金属导热件 Ί穿过腔体 1的下底面 连接有金属散热板 8。 谐振杆 4通过连接件 12与金属导热件 7连接， 连接件 12为金属 螺栓或金属螺钉， 连接件 12的上端为大头部分， 谐振杆 4上部空心 4.1的直径大于下部 空心 4.2的直径， 参阅图 2所示， 上部空心 4.1与下部空心 4.2的连接处构成定位连接件 12的定位凸台 9， 使连接件 12的上端卡在定位凸台 9处， 使谐振杆 4与金属导热件 Ί 连接更为牢固。  The top end of the resonant rod 4 is provided with a circular resonant disk 6, which changes the direct size of the resonant disk 6, and the frequency of the cavity filter can be adjusted. The bottom end of the resonant rod 4 is connected with a metal heat conducting member 7, and the metal heat conducting member is passed through the lower bottom surface of the cavity 1 to which a metal heat sink 8 is connected. The resonant rod 4 is connected to the metal heat conducting member 7 through the connecting member 12. The connecting member 12 is a metal bolt or a metal screw. The upper end of the connecting member 12 is a large end portion, and the diameter of the upper hollow portion 4.1 of the resonant rod 4 is larger than the diameter of the lower hollow portion 4.2. 2, the connection between the upper hollow portion 4.1 and the lower hollow portion 4.2 constitutes a positioning boss 9 of the positioning connector 12, so that the upper end of the connecting member 12 is caught at the positioning boss 9, so that the resonant rod 4 is connected to the metal heat conducting member Ί To be firm.
谐振杆 4的底端设有圆环凸台 10， 谐振杆 4与金属导热件 7为环接触， 这样， 在金 属导热件 7的上端面部平滑的条件下， 谐振杆 4的底面与金属导热件 7的上端面仍能很 好地接触， 降低了工艺要求， 节约了生产成本。  The bottom end of the resonant rod 4 is provided with a ring boss 10, and the resonant rod 4 is in ring contact with the metal heat conducting member 7, so that under the condition that the upper end surface of the metal heat conducting member 7 is smooth, the bottom surface of the resonant rod 4 and the metal heat conducting member The upper end of the 7 is still in good contact, reducing the process requirements and saving production costs.
金属导热件 7和金属散热板 8—体成型， 金属导热件 7和金属散热板 8注塑于腔体 1的下底面， 金属导热件 7的中部设有凸台 11， 参阅图 3所示， 凸台 11下底面与腔体 1 底面的上表面贴合， 方便定位。  The metal heat conducting member 7 and the metal heat sink 8 are integrally formed, and the metal heat conducting member 7 and the metal heat sink 8 are injection molded on the lower bottom surface of the cavity 1. The middle portion of the metal heat conducting member 7 is provided with a boss 11 as shown in FIG. The bottom surface of the table 11 is attached to the upper surface of the bottom surface of the cavity 1 for convenient positioning.
金属散热板 8为圆形金属薄片， 横截面积大于金属导热件 7的横截面积， 面积大散 热快， 可很好地降低塑料腔体的内部的温度， 并且使金属散热板 8位于腔体 1的底部外 表面能很好地定位， 金属散热板 8的上表面与腔体 1的底部外表面贴合。  The metal heat sink 8 is a circular metal foil having a cross-sectional area larger than the cross-sectional area of the metal heat conductive member 7, and the area is large and heat-dissipating, the temperature of the interior of the plastic cavity can be well lowered, and the metal heat sink 8 is located in the cavity. The bottom outer surface of 1 is well positioned, and the upper surface of the metal heat sink 8 is attached to the bottom outer surface of the cavity 1.
本发明同样适合于多个腔体的滤波器， 可通过调节金属谐振盘 6的大小、 位置、 以 及谐振腔 3腔体的深度调节滤波器使用频率，适用于使用频带为 300M— 900M的中频段 大功率腔体滤波器。  The invention is also suitable for a filter of a plurality of cavities, and can adjust the filter frequency by adjusting the size and position of the metal resonance disk 6, and the depth of the cavity of the cavity 3. It is suitable for the middle frequency band using the frequency band 300M-900M. High power cavity filter.
本发明的金属散热板 4和金属导热件 5可使用导热性能较好的铝材质。 本说明书中未作详细描述的内容属于本领域专业技术人员公知的现有技术 The metal heat sink 4 and the metal heat conductive member 5 of the present invention can be made of aluminum having a good thermal conductivity. The contents not described in detail in the present specification belong to the prior art known to those skilled in the art.

Claims

权 利 要 求 书 Claim
1、 一种中频段大功率腔体滤波器， 包括腔体 （1) 和腔体盖板 （2)， 所 述腔体 （1) 内设有谐振腔 （3)， 谐振腔 （3) 内安装有谐振杆 （4)， 所述腔 体盖板 （2) 上安装有调谐螺杆 （5)， 其特征在于： 所述腔体 （1) 为塑料材 质， 所述谐振杆 （4) 的顶端设有谐振盘 （6)， 所述谐振杆 （4) 的底端连接 有金属导热件 （7)， 所述金属导热件 （7) 穿过腔体 （1) 底面与设置在腔体 外面的金属散热板 （8) 连接， 所述谐振杆 （4) 与金属导热件 （7) 通过连 接件 （12) 连接， 所述谐振杆 （4) 为空心结构， 其上部空心 （4.1) 的直径 大于下部空心 （4.2) 的直径， 所述上部空心 （4.1) 与下部空心 （4.2) 的连 接处构成定位连接件 （12) 的定位凸台 （9)， 所述连接件 （12) 为连接螺钉， 该连接螺钉穿过谐振杆 （4) 的下部空心 （4.2) 与金属导热件 （7) 连接。 1. A medium-band high-power cavity filter, comprising a cavity (1) and a cavity cover plate (2), wherein the cavity (1) is provided with a resonant cavity (3), and the resonant cavity (3) A resonant rod (4) is mounted, and the cavity cover (2) is mounted with a tuning screw (5), wherein: the cavity (1) is made of plastic, and the top end of the resonant rod (4) A resonant disk (6) is disposed, and a bottom end of the resonant rod (4) is connected with a metal heat conducting member (7), and the metal heat conducting member (7) passes through a bottom surface of the cavity (1) and is disposed outside the cavity The metal heat sink (8) is connected, the resonant rod (4) and the metal heat conducting member (7) are connected by a connecting member (12), the resonant rod (4) is a hollow structure, and the diameter of the upper hollow portion (4.1) is larger than The diameter of the lower hollow (4.2), the joint of the upper hollow (4.1) and the lower hollow (4.2) constitutes a positioning boss (9) of the positioning connector (12), and the connecting member (12) is a connecting screw. The connecting screw is connected to the metal heat conductor (7) through the lower hollow (4.2) of the resonant rod (4).
2、 根据权利要求 1或所述的中频段大功率腔体滤波器， 其特征在于： 所 述谐振杆 （4) 的底端设有圆环凸台 （10)。 The mid-band high power cavity filter according to claim 1 or 2, wherein the bottom end of the resonant rod (4) is provided with a ring boss (10).
3、 根据权利要求 1所述的中频段大功率腔体滤波器， 其特征在于： 所述 金属导热件 （7) 的中部设有凸台 （11)， 所述凸台 （11) 下底面与腔体 （1) 底面的上表面贴合。 3. The mid-band high power cavity filter according to claim 1, wherein: the middle portion of the metal heat conducting member (7) is provided with a boss (11), and the bottom surface of the boss (11) is The upper surface of the bottom surface of the cavity (1) is fitted.
4、 根据权利要求 1或 2所述的中频段大功率腔体滤波器， 其特征在于： 所述金属导热件 （7) 和金属散热板 （8) —体成型。 The medium-frequency high-power cavity filter according to claim 1 or 2, wherein the metal heat conductive member (7) and the metal heat dissipation plate (8) are integrally formed.
5、 根据权利要求 4所述的中频段大功率腔体滤波器， 其特征在于： 所述 金属导热件 （7) 和金属散热板 （8) 与腔体 （1) 的下底面上一体注塑成型。 The medium-frequency high-power cavity filter according to claim 4, wherein: the metal heat conductive member (7) and the metal heat dissipation plate (8) are integrally molded with the lower surface of the cavity (1). .
PCT/CN2012/078474 2012-02-08 2012-07-11 Mid-frequency band high-power cavity filter WO2013117072A1 (en)

Applications Claiming Priority (10)

Application Number Priority Date Filing Date Title
CN201210026831.7 2012-02-08
CN 201220039239 CN202454699U (en) 2012-02-08 2012-02-08 Cavity filter
CN2012100268181A CN102569957A (en) 2012-02-08 2012-02-08 Indoor multi-cavity filter
CN201220039239.6 2012-02-08
CN201210026818.1 2012-02-08
CN2012100268317A CN102709629A (en) 2012-02-08 2012-02-08 Mid frequency range high-power cavity filter
CN2012100268177A CN102544656A (en) 2012-02-08 2012-02-08 Cavity filter
CN2012100268209A CN102544657A (en) 2012-02-08 2012-02-08 High-frequency band and high-power plastic cavity filter
CN201210026817.7 2012-02-08
CN201210026820.9 2012-02-08

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PCT/CN2012/078492 WO2013117073A1 (en) 2012-02-08 2012-07-11 Cavity filter
PCT/CN2012/078501 WO2013117074A1 (en) 2012-02-08 2012-07-11 High-frequency band high-power plastic cavity filter
PCT/CN2012/078527 WO2013117075A1 (en) 2012-02-08 2012-07-12 Indoor-use multi-cavity filter

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PCT/CN2012/078527 WO2013117075A1 (en) 2012-02-08 2012-07-12 Indoor-use multi-cavity filter

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