WO2020118523A1 - Filtre à guide d'ondes diélectrique ayant deux cavités et quatre modes - Google Patents

Filtre à guide d'ondes diélectrique ayant deux cavités et quatre modes Download PDF

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Publication number
WO2020118523A1
WO2020118523A1 PCT/CN2018/120304 CN2018120304W WO2020118523A1 WO 2020118523 A1 WO2020118523 A1 WO 2020118523A1 CN 2018120304 W CN2018120304 W CN 2018120304W WO 2020118523 A1 WO2020118523 A1 WO 2020118523A1
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WO
WIPO (PCT)
Prior art keywords
resonant cavity
mode
dielectric waveguide
waveguide filter
cavity
Prior art date
Application number
PCT/CN2018/120304
Other languages
English (en)
Chinese (zh)
Inventor
卓群飞
梁启新
付迎华
马龙
齐治
陈琳玲
Original Assignee
深圳市麦捷微电子科技股份有限公司
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 深圳市麦捷微电子科技股份有限公司 filed Critical 深圳市麦捷微电子科技股份有限公司
Priority to PCT/CN2018/120304 priority Critical patent/WO2020118523A1/fr
Publication of WO2020118523A1 publication Critical patent/WO2020118523A1/fr

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Classifications

    • 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

Definitions

  • the invention relates to the field of mobile communication, in particular to a dielectric waveguide filter.
  • the dielectric waveguide filter Limited by the size and performance requirements of the filter, it is often difficult for the dielectric waveguide filter to use a single transmission mode to meet the requirements.
  • the purpose of the present invention is to solve the technical deficiencies of existing small-size dielectric waveguide filters that cannot meet the requirements using a single transmission mode, and to propose a dual-cavity four-mode dielectric waveguide filter.
  • the adopted technical solution is: a dual-cavity four-mode dielectric waveguide filter including a dielectric waveguide filter body and an input coupling probe and an output fixed on the dielectric waveguide filter body A coupling probe; characterized in that: the main body of the dielectric waveguide filter includes a first resonant cavity and a second resonant cavity, and the input coupling probe and the output coupling probe are respectively connected to the first resonant cavity and the second resonant cavity, the first The resonant cavity and the second resonant cavity are linearly distributed in a straight-line structure; the first resonant cavity and the second resonant cavity are coupled through a dielectric waveguide filter window; the first mode and the second mode in the first resonant cavity and the second The third mode and the fourth mode in the resonant cavity are coupled by coupling steps, respectively.
  • the first mode in the first resonant cavity and the fourth mode in the second resonant cavity are coupled through a first coupling window, and the second mode in the first resonant cavity and the second resonance
  • the third mode of the cavity is coupled through the second coupling window;
  • the first mode and the second mode in the first resonant cavity are coupled by the first coupling step at the corner of the cavity, the third mode and the fourth in the second resonant cavity
  • the modes are coupled through the second coupling step at the corner of the cavity.
  • the dielectric waveguide filter of the double cavity four-mode structure of the present invention adjusts the filter frequency by adjusting the size of the two resonant cavities, and adjusts the depth of the two coupling steps and the two coupling windows
  • the size is used to adjust the width of the filter passband and the distance of the transmission zero outside the passband. Its structure is simple and reasonable, and it can effectively implement a dual-cavity four-mode dielectric waveguide filter.
  • FIG. 1 is a schematic structural diagram of the present invention.
  • a dual cavity four-mode dielectric waveguide filter of the present invention includes a dielectric waveguide filter body and an input coupling probe 1 and an output coupling probe 2 fixed on the dielectric waveguide filter body;
  • the main body of the dielectric waveguide filter includes a first resonant cavity 3 and a second resonant cavity 4, the input coupling probe 1 and the output coupling probe 2 are respectively connected to the first resonant cavity 3 and the second resonant cavity 4, the first resonant cavity 3 Linearly distributed with the second resonant cavity 4 in a straight line structure; the first resonant cavity 3 and the second resonant cavity 4 are coupled through a dielectric waveguide filter window, specifically: the first mode and The fourth mode of the second resonant cavity 4 is coupled through the first coupling window 7, the second mode in the first resonant cavity 3 is coupled with the third mode of the second resonant cavity 4 through the second coupling window 8; and the first resonant cavity 3
  • the first mode and the second mode are
  • the electric field directions of the TE10 mode and the TE01 mode in the two resonant cavities of the present invention have components on the X axis and the Y axis.
  • the first resonant cavity 3 and the second resonant cavity 4 are realized by the first coupling step 5 and the second coupling step 6
  • the first mode is coupled with the second mode and the third mode is coupled with the fourth mode
  • the second mode is coupled with the third mode
  • the first mode is coupled with the fourth mode through the second coupling window 8 and the first coupling window 7,
  • the strength of the first mode and the fourth mode is adjusted by the size of the first coupling window 7.
  • the tuning of the resonance frequency of the filter is achieved by changing the size of the first resonance cavity 3 and the second resonance cavity 4, by tuning the depth of the first coupling step 5 and the second coupling step 6, the first coupling window 7 and the second coupling
  • the size of the window 8 is used to tune the filter passband width, as well as the distance of the out-of-band transmission zero.
  • the invention realizes a double cavity four-mode dielectric waveguide filter through the above technology, which has a simple structure, excellent performance, small volume, and is convenient for production and processing.

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Abstract

L'invention concerne un filtre à guide d'ondes diélectrique ayant deux cavités et quatre modes concernant le domaine de la communication mobile, et en particulier un filtre à guide d'ondes diélectrique. L'invention résout le problème technique selon lequel un filtre à guide d'ondes diélectrique de petite taille existant utilisant un mode de transmission unique ne satisfait pas souvent aux exigences. Un corps principal du filtre à guide d'ondes diélectrique comprend une première cavité résonante et une seconde cavité résonante. Une sonde de couplage d'entrée et une sonde de couplage de sortie sont respectivement connectées à la première cavité résonante et à la seconde cavité résonante. La première cavité résonante et la seconde cavité résonante sont disposées pour former une ligne directe. La première cavité résonante est couplée à la seconde cavité résonante au moyen d'une fenêtre de filtre à guide d'ondes diélectrique. Un premier mode et un deuxième mode de la première cavité résonante sont respectivement couplés à un troisième mode et à un quatrième mode de la seconde cavité résonante au moyen d'étapes de couplage. Le filtre à guide d'ondes diélectrique ayant deux cavités et quatre modes a une structure simple et des performances favorables, est petit, et est facile à fabriquer.
PCT/CN2018/120304 2018-12-11 2018-12-11 Filtre à guide d'ondes diélectrique ayant deux cavités et quatre modes WO2020118523A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2018/120304 WO2020118523A1 (fr) 2018-12-11 2018-12-11 Filtre à guide d'ondes diélectrique ayant deux cavités et quatre modes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2018/120304 WO2020118523A1 (fr) 2018-12-11 2018-12-11 Filtre à guide d'ondes diélectrique ayant deux cavités et quatre modes

Publications (1)

Publication Number Publication Date
WO2020118523A1 true WO2020118523A1 (fr) 2020-06-18

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ID=71076198

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2018/120304 WO2020118523A1 (fr) 2018-12-11 2018-12-11 Filtre à guide d'ondes diélectrique ayant deux cavités et quatre modes

Country Status (1)

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WO (1) WO2020118523A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120049983A1 (en) * 2010-07-02 2012-03-01 Electronics And Telecommunications Research Institute Diplexer, and resonator filters combined with dual mode and triple-mode resonators
CN103972621A (zh) * 2014-04-22 2014-08-06 深圳三星通信技术研究有限公司 一种混合介质波导滤波器
CN105244571A (zh) * 2015-09-17 2016-01-13 深圳三星通信技术研究有限公司 一种介质波导滤波器
CN108832240A (zh) * 2018-06-07 2018-11-16 张家港保税区灿勤科技有限公司 可改善远端抑制的介质波导滤波器

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120049983A1 (en) * 2010-07-02 2012-03-01 Electronics And Telecommunications Research Institute Diplexer, and resonator filters combined with dual mode and triple-mode resonators
CN103972621A (zh) * 2014-04-22 2014-08-06 深圳三星通信技术研究有限公司 一种混合介质波导滤波器
CN105244571A (zh) * 2015-09-17 2016-01-13 深圳三星通信技术研究有限公司 一种介质波导滤波器
CN108832240A (zh) * 2018-06-07 2018-11-16 张家港保税区灿勤科技有限公司 可改善远端抑制的介质波导滤波器

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