WO2016090999A1 - Boîte de blindage contre les radiofréquences - Google Patents

Boîte de blindage contre les radiofréquences Download PDF

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Publication number
WO2016090999A1
WO2016090999A1 PCT/CN2015/091316 CN2015091316W WO2016090999A1 WO 2016090999 A1 WO2016090999 A1 WO 2016090999A1 CN 2015091316 W CN2015091316 W CN 2015091316W WO 2016090999 A1 WO2016090999 A1 WO 2016090999A1
Authority
WO
WIPO (PCT)
Prior art keywords
radio frequency
box body
frequency shielding
dielectric plate
shielding box
Prior art date
Application number
PCT/CN2015/091316
Other languages
English (en)
Chinese (zh)
Inventor
王富强
王智一
王晖
张向峰
Original Assignee
中兴通讯股份有限公司
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.)
Filing date
Publication date
Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Publication of WO2016090999A1 publication Critical patent/WO2016090999A1/fr

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K9/00—Screening of apparatus or components against electric or magnetic fields

Definitions

  • the embodiments of the present invention relate to, but are not limited to, the field of electronic device technologies, and in particular, to a radio frequency shielding box body.
  • the RF shielding box is one of the main components of the power amplifier and the transmitter. In these RF modules, the RF energy is prevented from leaking to the outside, and the base station equipment is tested by EMC (Electro Magnetic Compatibility).
  • EMC Electro Magnetic Compatibility
  • the definition of the RF shielding box body to ensure that the system does not radiate electromagnetic waves by forming a closed electromagnetic space.
  • the shielding performance and the influence of the cavity formed by the box and the PCB on the RF circuit are the two most important performance indicators of the RF shielding box.
  • the shielding performance mainly focuses on the electrical sealing of the box.
  • the influence of the cavity on the RF circuit mainly depends on the reflection intensity of the RF signal. The higher the cavity, the smaller the influence of the reflected signal on the RF module itself, and the better the RF performance. achieve. In the related art, there is no RF shielding case that is reduced in size without affecting system performance.
  • the embodiment of the present invention provides a radio frequency shielding box body, which can solve the radio frequency screen in the related art.
  • the problem of performance and volume in the cover box cannot be balanced.
  • the utility model provides a radio frequency shielding box body, including:
  • a dielectric plate is mounted in the body of the case, above the components on the PCB.
  • the box body is provided with a plurality of cavities, and each cavity corresponds to a functional module on the PCB board.
  • the media sheet is mounted within one or more cavities.
  • the materials of the dielectric sheets in each of the cavities are the same or different.
  • the dielectric plate is mounted in a corresponding cavity of the radio frequency module.
  • the dielectric plate is mounted within a corresponding cavity of the power amplifier module.
  • the body of the box is a metal shielding box body.
  • the material of the metal shielding box body is aluminum.
  • the dielectric plate is made of a non-metallic material.
  • the dielectric plate has a dielectric constant greater than one.
  • the embodiment of the utility model can effectively reduce the volume of the RF shielding box body under the premise of ensuring the electrical performance index of the RF shielding box by installing the dielectric plate in the body of the box body, and has the advantages of small volume, simple debugging, good shielding, etc. advantage.
  • FIG. 1 is a schematic structural view of a radio frequency shielding box body in an embodiment of the present invention.
  • the embodiment of the present invention provides a novel design of a radio frequency shielding box body for reducing the volume of a radio frequency module.
  • the radio frequency shielding box body is a combination of a metal cover and a certain dielectric material, wherein the radio frequency cavity effect can be designed only. This design is applied in a relatively large place, and the purpose of reducing the volume under the premise of ensuring performance is achieved.
  • the radio frequency shielding box body of the embodiment of the present invention includes:
  • the box body 10 is mounted on the PCB board and forms a closed shielding space together with the PCB board to enclose the components on the PCB board in the shielding space;
  • the dielectric plate 20 is mounted in the casing body 10 above the components on the PCB board.
  • the box body 10 is provided with a plurality of cavities 101, each of which corresponds to a functional module on the PCB board.
  • the dielectric plate 20 is mounted within one or more of the cavities 101.
  • the same dielectric plate 20 may be mounted in each of the cavities 101, and the dielectric plates 20 made of different materials may be mounted.
  • the dielectric plate 20 can be installed only in a place where the RF cavity effect is relatively large.
  • the dielectric plate 20 is installed in the cavity 101 corresponding to the RF module, and/or is installed in a cavity corresponding to the power amplifier module. 101.
  • the casing body 10 is a metal shielding box body, and the material is usually aluminum.
  • the dielectric plate 20 is made of a non-metallic material having a dielectric constant greater than one.
  • the radio frequency shielding box body of the embodiment of the present invention can effectively reduce the volume of the power amplifier module, and provides favorable guarantee for miniaturization of the RRU (Remote Radio Unit), and can also greatly reduce the effect caused by the cavity effect.
  • the difficulty of design evaluation of power amplifiers provides strong support for rapid evaluation of power amplifier solutions, shortens product development cycle, and flexibly adjusts the layout of power amplifiers and other RF modules to effectively promote integrated large-board design.
  • the radio frequency shielding box body of the embodiment of the present invention is mainly applied to the radio frequency large signal area of the base station, and has certain effects on the radiation protection, heat dissipation, waterproof, moisture proof and insect prevention of the base station.
  • the radio frequency shielding box body of the embodiment of the present invention can effectively reduce the volume of the power amplifier module, and provide favorable guarantee for miniaturization of the RRU; and can also greatly reduce the difficulty of designing the power amplifier design due to the cavity effect, and quickly evaluate the power amplifier.
  • the solution provides strong support to shorten the product development cycle; it also flexibly adjusts the layout of power amplifiers and other RF modules to effectively promote integrated slab design.

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
  • Casings For Electric Apparatus (AREA)

Abstract

L'invention concerne une boîte de blindage contre les radiofréquences, comprenant : un corps de boîte (10) installé sur une carte de circuit imprimé et formant avec cette dernière un espace fermé dans lequel sont situés les composants placés sur la carte de circuit imprimé; et une plaque diélectrique (20) installée dans le corps de boîte et située au-dessus des composants placés sur la carte de circuit imprimé.
PCT/CN2015/091316 2014-12-11 2015-09-30 Boîte de blindage contre les radiofréquences WO2016090999A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201420779302.9U CN204652865U (zh) 2014-12-11 2014-12-11 一种射频屏蔽盒体
CN201420779302.9 2014-12-11

Publications (1)

Publication Number Publication Date
WO2016090999A1 true WO2016090999A1 (fr) 2016-06-16

Family

ID=54105568

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2015/091316 WO2016090999A1 (fr) 2014-12-11 2015-09-30 Boîte de blindage contre les radiofréquences

Country Status (2)

Country Link
CN (1) CN204652865U (fr)
WO (1) WO2016090999A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN204652865U (zh) * 2014-12-11 2015-09-16 中兴通讯股份有限公司 一种射频屏蔽盒体
CN107645900A (zh) * 2017-09-26 2018-01-30 天津光电通信技术有限公司 一种基于射频连接器的屏蔽盒
CN108112228A (zh) * 2017-12-12 2018-06-01 北京自动化控制设备研究所 一种提高射频电路电磁屏蔽性能的结构

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1252923A (zh) * 1997-04-16 2000-05-10 艾利森电话股份有限公司 一种屏蔽外壳和一种用于制造屏蔽外壳的方法
CN1262562A (zh) * 1999-01-08 2000-08-09 萨甘股份有限公司 带电磁屏蔽的高频电路组件
WO2001099483A1 (fr) * 2000-06-20 2001-12-27 Laird Technologies, Inc. Couvercle de blindage muni de nervures elastiques integrees
CN202713890U (zh) * 2012-07-05 2013-01-30 深圳市飞荣达科技股份有限公司 一种屏蔽盖
CN103563493A (zh) * 2011-06-09 2014-02-05 苹果公司 用于屏蔽基板上的部件的电磁屏蔽结构
CN203675498U (zh) * 2013-10-25 2014-06-25 幸康电子股份有限公司 电源模组
CN204652865U (zh) * 2014-12-11 2015-09-16 中兴通讯股份有限公司 一种射频屏蔽盒体

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1252923A (zh) * 1997-04-16 2000-05-10 艾利森电话股份有限公司 一种屏蔽外壳和一种用于制造屏蔽外壳的方法
CN1262562A (zh) * 1999-01-08 2000-08-09 萨甘股份有限公司 带电磁屏蔽的高频电路组件
WO2001099483A1 (fr) * 2000-06-20 2001-12-27 Laird Technologies, Inc. Couvercle de blindage muni de nervures elastiques integrees
CN103563493A (zh) * 2011-06-09 2014-02-05 苹果公司 用于屏蔽基板上的部件的电磁屏蔽结构
CN202713890U (zh) * 2012-07-05 2013-01-30 深圳市飞荣达科技股份有限公司 一种屏蔽盖
CN203675498U (zh) * 2013-10-25 2014-06-25 幸康电子股份有限公司 电源模组
CN204652865U (zh) * 2014-12-11 2015-09-16 中兴通讯股份有限公司 一种射频屏蔽盒体

Also Published As

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CN204652865U (zh) 2015-09-16

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