WO2014194477A1 - 介质谐振器、应用其的介质滤波器、收发信机及基站 - Google Patents
介质谐振器、应用其的介质滤波器、收发信机及基站 Download PDFInfo
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- WO2014194477A1 WO2014194477A1 PCT/CN2013/076732 CN2013076732W WO2014194477A1 WO 2014194477 A1 WO2014194477 A1 WO 2014194477A1 CN 2013076732 W CN2013076732 W CN 2013076732W WO 2014194477 A1 WO2014194477 A1 WO 2014194477A1
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- Prior art keywords
- dielectric
- dielectric filter
- resonator
- conductive layer
- resonators
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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
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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
- H01P1/2002—Dielectric waveguide 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
- H01P1/2084—Cascaded cavities; Cascaded resonators inside a hollow waveguide structure with 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
- H01P1/2088—Integrated in a substrate
Definitions
- the present invention relates to a communication device component, and more particularly to a dielectric resonator, a dielectric filter using the same, a transceiver, and a base station.
- wireless communication base stations are becoming more and more densely distributed, and the demand for miniaturization of base stations is becoming more and more intense.
- the RF front-end filter module in the base station occupies a large volume, so the use of a smaller-sized filter plays an important role in reducing the size of the base station.
- the dielectric filter has a small volume.
- 1 shows a conventional dielectric filter.
- the main body of the dielectric filter is a rectangular parallelepiped medium 11 having a through hole 12 in the medium 11, and a front end of the medium 11 is exposed at one end of the through hole 12, and the front side of the medium 11 is carried out.
- Partial metallization that is, only a square metal layer 13 is formed on the surface of the medium 11 around the end of the through hole 12, and adjacent square metal layers 13 are electrically insulated, and all surfaces of the medium 11 except the front surface are completely metallized ( In Fig. 1, the shaded portion is a metallized region, and the unshaded portion is a non-metallized region.
- a through hole 12 and a square metal layer 13 on the front side of the dielectric 11 surrounding the through hole 12 constitute a dielectric resonator, and the resonant frequency of the dielectric resonator is adjusted by adjusting the area of the square metal layer 13, between adjacent dielectric resonators.
- the coupling is adjusted by adjusting the distance between adjacent square metal layers 13.
- the internal resonance mode of the dielectric resonator is a TEM (transverse electromagnetic wave) mode
- the loss of the inner conductor is large, resulting in a large loss of the dielectric filter, so that the loss index of the dielectric filter cannot satisfy the base station filtering. Demand.
- Embodiments of the present invention provide a dielectric resonator, a dielectric filter, a transceiver, and a base station, which solve the problem that the internal resonant mode of the dielectric resonator in the conventional dielectric filter is a TEM mode and causes a dielectric filter.
- the loss indicator cannot meet the problem of base station filtering requirements.
- an embodiment of the present invention provides a dielectric resonator including a body made of a solid dielectric material, the body surface is provided with a pit, and the surface of the body and the surface of the pit are covered with a conductive Floor.
- the number of the pits is one.
- the dielectric material is a ceramic.
- an embodiment of the present invention provides a dielectric filter including at least two dielectric resonators; the dielectric resonator includes a body made of a solid dielectric material, and the body surface is provided with a pit. The body surface and the pit surface are covered with a conductive layer.
- the adjacent dielectric resonators are fixedly connected by a connecting surface and the conductive layers of the connecting surfaces are joined together.
- the adjacent dielectric resonators have a gap therebetween.
- the shape of the void is a hole shape or a groove shape.
- an embodiment of the present invention provides a dielectric filter including a body made of a solid dielectric material, the body surface being provided with at least two pits; adjacent to the pits The body is provided with holes and/or grooves, and the surface of the body is covered with a conductive layer.
- one of the pits, the body surrounding the body, and the conductive layer constitute a dielectric resonator.
- the holes and/or slots form a coupling between adjacent dielectric resonators structure.
- the hole is a through hole or a blind hole.
- an embodiment of the present invention provides a transceiver including the above-described dielectric filter.
- an embodiment of the present invention provides a base station, including the foregoing transceiver.
- the pits on the dielectric resonator body and the conductive layer covered by the body and the pit surface form a resonant cavity, and the internal resonance thereof
- the mode is a TM (transverse magnetic wave) mode, and the direction of the mode electric field is perpendicular to the surface of the body where the pit is located. Since there is no inner conductor loss inside the cavity, the loss of the dielectric resonator is small, so that the medium using the dielectric resonator is used.
- the loss index of the filter can meet the filtering requirements of the base station.
- FIG. 1 is a schematic perspective view of a dielectric filter in the prior art
- FIG. 2a is a top view of a dielectric resonator according to an embodiment of the present invention.
- Figure 2b is a cross-sectional view taken along line A-A of Figure 2a;
- 3a is a top view of a dielectric filter according to an embodiment of the present invention.
- FIG. 3b is a top view of another dielectric filter according to an embodiment of the present invention.
- FIG. 4 is a perspective perspective view of still another dielectric filter according to an embodiment of the present invention.
- Embodiments of the present invention provide a dielectric resonator, as shown in FIGS. 2a and 2b, including a body 21 made of a solid dielectric material, the body 21 having pits 22, a surface of the body 21, and a recess 22 The surface is covered with a conductive layer 23.
- the pits on the body and the conductive layer covered by the body and the pit surface form a resonant cavity
- the internal resonance mode is a TM (transverse magnetic wave) mode
- the direction of the mode electric field is perpendicular to the concave
- the number of pits is preferably one.
- each pit and the conductive layer covering the pit and the body form a sub-resonator of the resonator.
- the size, shape and position of the IHJ pit determine the resonance of the sub-resonator.
- the resonator combination is used to form the filter. Therefore, the commonly used resonator has only one pit.
- the dielectric material is preferably ceramic, the ceramic has a high dielectric constant (36), and the hardness and high temperature resistance are also good, so it is a solid state commonly used in the field of radio frequency filters.
- Dielectric material may also be selected from other materials known to those skilled in the art, such as glass, electrically insulating high molecular polymers, and the like.
- the shape of the pit of the dielectric resonator provided by the above embodiment is not limited to the circular shape shown in FIG. 2a and FIG. 2b, and may be a square or irregular shape; and the shape of the body is not limited to FIG. 2a.
- the cube shown in Figure 2b can also be a sphere, or an irregular shape; the shape of the pit and body can be selected according to the application of the dielectric resonator and the performance parameters.
- the embodiment of the present invention further provides a dielectric filter.
- the dielectric filter includes at least two dielectric resonators (31, 32, 33).
- the structure of the dielectric resonator (31, 32, 33) is similar to that of the dielectric resonator shown in FIGS. 2a and 2b, and includes a body 21 made of a solid dielectric material, and a recess 22 is provided on the surface of the body 21.
- the surface of the body 21 and the surface of the recess 22 are covered with a conductive layer 23.
- connection faces 34 are fixedly connected by the connection faces 34 and the conductive layers 23 of the connection faces 34 are joined together.
- a plurality of dielectric resonators are used, and adjacent dielectric resonators are fixedly connected by a connection surface to form a whole body, and the conductive layers of adjacent dielectric resonator connection faces are connected. Together, for example by soldering, the adjacent dielectric resonators are electrically connected so that electromagnetic wave signals can propagate between the dielectric resonators, due to the dielectric resonator and the medium shown in Figures 2a and 2b.
- the internal harmonics are all TM modes, modes.
- the direction of the electric field is perpendicular to the surface of the body where the pit is located, so that there is no inner conductor loss inside the cavity, so the loss index of the dielectric filter can be significantly reduced, so that the dielectric filter can be applied in the base station.
- the dielectric filter composed of a plurality of dielectric resonators is a TM mode.
- the TM mode dielectric filter has an advantage of a small insertion loss compared to the conventional TEM film dielectric filter.
- the conductive layers 23 of the connection faces 34 of the adjacent dielectric resonators are fixed to each other.
- the dielectric resonators constituting the dielectric filter may be fabricated such that the entire outer surface of the body 21 of each dielectric resonator is covered with the conductive layer 23, and then the adjacent dielectric resonator
- the conductive layers 23 at the fixedly connected connecting faces 34 are joined together to not only achieve a fixed connection of adjacent dielectric resonators, but also to electrically connect adjacent dielectric resonators through the conductive layer 23.
- the shape of the body of each dielectric resonator in the dielectric filter provided by the embodiment of the present invention may be arbitrarily selected according to requirements, and the connection faces of the adjacent dielectric resonators that are fixedly connected may have mutually matching grooves, wherein The mutually matching grooves may form a gap when adjacent dielectric resonators are connected, and the gap may be a through hole, a blind hole or a groove, and the shape and size of the gap are related to the coupling degree of the adjacent dielectric resonator. .
- Figure 3b shows the gap (35, 36, 37).
- the dielectric filter shown in Figure 3b adds a gap (35, 36, 37) to the dielectric filter shown in Figure 3a.
- the outer surfaces of the dielectric resonators are in contact with each other, and the outer surfaces of the dielectric resonators at the gaps (35, 36, 37) are recessed and thus cannot be in contact with each other. Since the outer surface of the dielectric resonator is a conductive layer, the inner walls of these voids are all conductive layers 23.
- the shape of the voids (35, 36, 37) may be the above-described hole shape or a groove shape, or other shapes known to those skilled in the art.
- the embodiment of the present invention further provides a dielectric filter, as shown in FIG. 4, comprising a body 44 made of a solid dielectric material, the body 44 is provided with at least two pits 22 on the surface; adjacent pits 22 The body 44 is provided with holes (41, 42) and/or grooves 43, and the surface of the body 44 is covered with a conductive layer 23. Further, a pit 22, a body 44 therearound and a conductive layer 23 constitute a dielectric resonator. Further, the holes (41, 42) and/or the grooves 43 constitute a coupling structure between adjacent dielectric resonators.
- the dielectric filter shown in FIG. 4 is a modified structure of the dielectric filter shown in FIG. 3b, which is different from the dielectric body of the dielectric filter shown in FIG. 3b, and the dielectric filter shown in FIG. 3b.
- the body includes only one body 44.
- the body 44 is provided with a plurality of recesses 22 on its surface, and the surface of the body 44 is covered with a conductive layer 23, a recess 22 on the surface of the body 44, a body around the recess 22, and a conductive body.
- the layers can constitute a dielectric resonator, and three dielectric resonators (31, 32, 33) are shown in FIG.
- the holes (41, 42) and the grooves 43 provided in the body 44 serve as coupling structures between adjacent dielectric resonators (31 and 32, 32 and 33, 33 and 31), and serve to separate adjacent dielectric resonators (31).
- the degree of coupling between adjacent dielectric resonators also changes accordingly.
- the body of each dielectric resonator in the dielectric filter is integrally formed, and the shape, size and position of the pits 22, the holes (41, 42) and the grooves 43 are filtered according to the medium.
- the performance parameters of the device are pre-designed and formed at the same time as the body is integrally formed.
- the raw material (such as clay) of the main body can be prepared, and the raw material is put into the designed mold to be fired to form an integrally formed dielectric filter body (ceramic), and finally burned.
- the finished body surface is plated with a conductive layer 23 such that the surface of the body 44 covers the conductive layer 23.
- the body 44 can be provided with holes (41, 42) and slots 43 at the same time, or only holes (41, 42) or only slots 43 can be selected according to the required performance parameters of the dielectric filter.
- the surface of the body 44 covers the conductive layer 23.
- the inner wall surfaces of the holes (41, 42) and the grooves 43 are the conductive layers 23.
- the dielectric can be filtered by removing the conductive layer in the pit 22.
- the resonant frequency of the device is adjusted, and the coupling between the dielectric resonators can also be adjusted by removing the conductive layer of the inner wall of the holes (41, 42), or by removing the conductive layer of the inner wall of the groove 43.
- the coupling between the resonators or the coupling between the dielectric resonators is achieved by partially removing the holes (41, 42) and the conductive layers on the inner walls of the grooves 43.
- the hole 41 is a through hole having a square cross section
- the hole 42 is a blind hole having a circular cross section.
- the cross-sectional shape of the hole may also be other irregular shapes, and the selection of the specific shape is determined according to the performance parameters of the dielectric filter.
- the preparation process of the dielectric filter of the present invention can be implemented by means of software plus necessary general hardware, and of course, by hardware, but in many cases, the former It is a better implementation.
- the technical solution of the preparation process of the dielectric filter of the present invention may be embodied in the form of a software product in essence or in the form of a software product stored in a readable storage medium.
- the method of preparing a dielectric filter such as a floppy disk, a hard disk or an optical disk of a computer, and including a plurality of instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) .
- a computer device which may be a personal computer, a server, or a network device, etc.
- the embodiment of the invention further provides a transceiver comprising the medium filter described in the above embodiments.
- the dielectric filter described in the above embodiment since the dielectric filter described in the above embodiment is used, the loss is remarkably reduced, and the filtering performance is remarkably improved.
- the embodiment of the invention further provides a base station, which comprises the medium filter or the transceiver described in the above embodiment.
- the dielectric filter described in the above embodiment is used, the loss is remarkably reduced, and the filtering performance is remarkably improved.
Abstract
Description
Claims
Priority Applications (11)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP13886199.2A EP2993727B1 (en) | 2013-06-04 | 2013-06-04 | Dielectric resonator and dielectric filter, transceiver and base station using same |
CN201380000666.0A CN104364962B (zh) | 2013-06-04 | 2013-06-04 | 介质谐振器、应用其的介质滤波器、收发信机及基站 |
CN201910533745.7A CN110224206B (zh) | 2013-06-04 | 2013-06-04 | 介质谐振器、应用其的介质滤波器、收发信机及基站 |
JP2016517108A JP6535957B2 (ja) | 2013-06-04 | 2013-06-04 | 誘電体共振器、誘電体共振器を用いた誘電体フィルタ、送受信機、および基地局 |
EP19158729.4A EP3565056B1 (en) | 2013-06-04 | 2013-06-04 | Dielectric resonator, dielectric filter using dielectric resonator, transceiver, and base station |
ES13886199T ES2726131T3 (es) | 2013-06-04 | 2013-06-04 | Resonador dieléctrico y filtro dieléctrico, transceptor y estación base que utiliza los mismos |
CA2914434A CA2914434C (en) | 2013-06-04 | 2013-06-04 | Dielectric resonator, dielectric filter using dielectric resonator, transceiver, and base station |
PCT/CN2013/076732 WO2014194477A1 (zh) | 2013-06-04 | 2013-06-04 | 介质谐振器、应用其的介质滤波器、收发信机及基站 |
US14/960,139 US10193205B2 (en) | 2013-06-04 | 2015-12-04 | Dielectric resonator, dielectric filter using dielectric resonator, transceiver, and base station |
US16/205,789 US10741900B2 (en) | 2013-06-04 | 2018-11-30 | Dielectric resonator, dielectric filter using dielectric resonator, transceiver, and base station |
US16/924,746 US11018405B2 (en) | 2013-06-04 | 2020-07-09 | Dielectric resonator, dielectric filter using dielectric resonator, transceiver, and base station |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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PCT/CN2013/076732 WO2014194477A1 (zh) | 2013-06-04 | 2013-06-04 | 介质谐振器、应用其的介质滤波器、收发信机及基站 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US14/960,139 Continuation US10193205B2 (en) | 2013-06-04 | 2015-12-04 | Dielectric resonator, dielectric filter using dielectric resonator, transceiver, and base station |
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WO2014194477A1 true WO2014194477A1 (zh) | 2014-12-11 |
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PCT/CN2013/076732 WO2014194477A1 (zh) | 2013-06-04 | 2013-06-04 | 介质谐振器、应用其的介质滤波器、收发信机及基站 |
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US (3) | US10193205B2 (zh) |
EP (2) | EP2993727B1 (zh) |
JP (1) | JP6535957B2 (zh) |
CN (2) | CN104364962B (zh) |
CA (1) | CA2914434C (zh) |
ES (1) | ES2726131T3 (zh) |
WO (1) | WO2014194477A1 (zh) |
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WO2018148905A1 (zh) * | 2017-02-16 | 2018-08-23 | 华为技术有限公司 | 介质滤波器、收发设备及基站 |
CN109546270A (zh) * | 2019-01-11 | 2019-03-29 | 苏州艾福电子通讯有限公司 | 一种滤波器 |
CN109687072A (zh) * | 2019-01-11 | 2019-04-26 | 苏州艾福电子通讯有限公司 | 滤波器 |
CN109728385A (zh) * | 2019-02-22 | 2019-05-07 | 江西一创新材料有限公司 | 一种具有对称零点特性的介质滤波器耦合结构 |
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CN106558747A (zh) * | 2015-09-28 | 2017-04-05 | 中兴通讯股份有限公司 | 一种谐振腔及其构成的滤波器 |
WO2017088174A1 (zh) * | 2015-11-27 | 2017-06-01 | 华为技术有限公司 | 介质滤波器,收发信机及基站 |
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2013
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- 2013-06-04 ES ES13886199T patent/ES2726131T3/es active Active
- 2013-06-04 CN CN201380000666.0A patent/CN104364962B/zh active Active
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Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2018148905A1 (zh) * | 2017-02-16 | 2018-08-23 | 华为技术有限公司 | 介质滤波器、收发设备及基站 |
US11139546B2 (en) | 2017-02-16 | 2021-10-05 | Huawei Technologies Co., Ltd. | Dielectric filter, transceiver device, and base station |
US11664564B2 (en) | 2017-02-16 | 2023-05-30 | Huawei Technologies Co., Ltd. | Dielectric filter, transceiver device, and base station |
CN109546270A (zh) * | 2019-01-11 | 2019-03-29 | 苏州艾福电子通讯有限公司 | 一种滤波器 |
CN109687072A (zh) * | 2019-01-11 | 2019-04-26 | 苏州艾福电子通讯有限公司 | 滤波器 |
CN109687072B (zh) * | 2019-01-11 | 2020-04-21 | 苏州艾福电子通讯股份有限公司 | 滤波器 |
WO2020143070A1 (zh) * | 2019-01-11 | 2020-07-16 | 苏州艾福电子通讯有限公司 | 滤波器 |
WO2020143814A1 (zh) * | 2019-01-11 | 2020-07-16 | 华为技术有限公司 | 一种滤波器 |
CN109728385A (zh) * | 2019-02-22 | 2019-05-07 | 江西一创新材料有限公司 | 一种具有对称零点特性的介质滤波器耦合结构 |
CN109728385B (zh) * | 2019-02-22 | 2023-12-08 | 江西一创新材料有限公司 | 一种具有对称零点特性的介质滤波器耦合结构 |
Also Published As
Publication number | Publication date |
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US20190097298A1 (en) | 2019-03-28 |
US10741900B2 (en) | 2020-08-11 |
US20200343617A1 (en) | 2020-10-29 |
CA2914434A1 (en) | 2014-12-11 |
EP2993727B1 (en) | 2019-03-20 |
ES2726131T3 (es) | 2019-10-01 |
CN110224206B (zh) | 2021-10-26 |
EP2993727A1 (en) | 2016-03-09 |
US10193205B2 (en) | 2019-01-29 |
EP3565056A1 (en) | 2019-11-06 |
US11018405B2 (en) | 2021-05-25 |
EP2993727A4 (en) | 2016-05-11 |
CN104364962A (zh) | 2015-02-18 |
CA2914434C (en) | 2019-09-10 |
EP3565056B1 (en) | 2022-03-02 |
CN110224206A (zh) | 2019-09-10 |
JP2016521092A (ja) | 2016-07-14 |
JP6535957B2 (ja) | 2019-07-03 |
CN104364962B (zh) | 2019-06-21 |
US20160099492A1 (en) | 2016-04-07 |
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