CN111342181A - Dielectric waveguide filter - Google Patents
Dielectric waveguide filter Download PDFInfo
- Publication number
- CN111342181A CN111342181A CN201911342684.2A CN201911342684A CN111342181A CN 111342181 A CN111342181 A CN 111342181A CN 201911342684 A CN201911342684 A CN 201911342684A CN 111342181 A CN111342181 A CN 111342181A
- Authority
- CN
- China
- Prior art keywords
- resonance
- blind hole
- waveguide filter
- dielectric waveguide
- dielectric
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
Images
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
- H01P1/212—Frequency-selective devices, e.g. filters suppressing or attenuating harmonic frequencies
Landscapes
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
The invention relates to the field of filters, in particular to a dielectric waveguide filter. The dielectric waveguide filter comprises a dielectric body and a conducting layer, wherein the dielectric body is integrally pressed and formed, and the conducting layer is arranged on the surface of the dielectric body; the dielectric body comprises a first surface and a second surface which are opposite, and a plurality of groups of blind holes are arranged on the dielectric body to form a plurality of resonance parts; two blind holes are formed in each resonance part, one blind hole of each resonance part is formed in the first surface, and the other blind hole of each resonance part is formed in the second surface. The dielectric waveguide filter of the invention improves the problem that the out-of-band rejection width of the filter is too narrow, and effectively improves the harmonic rejection condition.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the field of filters, in particular to a dielectric waveguide filter.
[ background of the invention ]
In the 5G era, due to the requirement of large-scale antenna technology for large-scale antenna integration, filters are required to be more miniaturized, integrated, and lightweight. A filter is a frequency-selective device that passes certain frequency components of a signal, thereby significantly attenuating other frequency components. The existing dielectric waveguide filter brings the drawing of a higher order mode due to the high dielectric constant of a dielectric material, causes the problem of too narrow out-of-band rejection width, and causes the out-of-band rejection width to be unable to meet the requirement.
Therefore, it is necessary to provide a filter to solve the above problems.
[ summary of the invention ]
The invention aims to provide a dielectric waveguide filter capable of improving the problem of narrow out-of-band suppression width.
The technical scheme of the invention is as follows:
the invention provides a dielectric waveguide filter, which comprises a dielectric body and a conducting layer, wherein the dielectric body is integrally pressed and formed; the dielectric body comprises a first surface and a second surface which are opposite, and a plurality of groups of blind holes are arranged on the dielectric body to form a plurality of resonance parts; two blind holes are formed in each resonance part, one blind hole of each resonance part is formed in the first surface, and the other blind hole of each resonance part is formed in the second surface.
As a modification, two blind holes in the resonance part are arranged opposite to each other.
As a modification, the blind hole is located at the center of the surface of the resonance part.
As an improvement mode, the quantity of resonance portion is four at least, resonance portion includes an input resonance portion, an output resonance portion and two at least ordinary resonance portions respectively, input resonance portion with output resonance portion is adjacent to be set up, the blind hole that is located the second surface of input resonance portion is the input blind hole, the blind hole that is located the second surface of output resonance portion is the output blind hole, other blind holes in input resonance portion, output resonance portion and the ordinary resonance portion are the resonance blind hole.
As an improvement, the diameters of the input blind hole and the output blind hole are equal, and the diameter of the resonance blind hole is larger than that of the input blind hole.
As a refinement, the resonance section includes two rows, and the input resonance section and the output resonance section are located at ends of the dielectric body.
As an improvement, the dielectric waveguide filter includes a first end and a second end opposite to each other, and the resonance portion provided with the input blind hole or the output blind hole is located at the first end of the dielectric waveguide filter.
As an improvement, the first surface and the second surface of the dielectric body are respectively provided with a coupling blind hole, and the two coupling blind holes are oppositely arranged and are positioned between the two resonance parts.
As a refinement, the blind coupling hole is located at the second end.
As an improvement, the dielectric body is further provided with an isolation groove penetrating through the first surface and the second surface of the dielectric body, and the isolation groove is located between two adjacent resonance parts.
Compared with the prior art, the dielectric waveguide filter comprises a dielectric body and a conducting layer, wherein the dielectric body is integrally pressed and formed, and the conducting layer is arranged on the surface of the dielectric body; the dielectric body comprises a first surface and a second surface which are opposite, and a plurality of groups of blind holes are arranged on the dielectric body to form a plurality of resonance parts; two blind holes are formed in each resonance part, one blind hole of each resonance part is formed in the first surface, the other blind hole of each resonance part is formed in the second surface, and the dielectric waveguide filter improves the problem that the out-of-band rejection width of the filter is too narrow, and effectively improves the harmonic rejection condition.
[ description of the drawings ]
Fig. 1 is a schematic perspective view of a dielectric waveguide filter according to an embodiment of the present invention;
fig. 2 is an exploded view of a dielectric waveguide filter according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a first perspective view of a media body according to an embodiment of the invention;
FIG. 4 is a schematic structural diagram of a second perspective view of a media body according to an embodiment of the invention;
FIG. 5 is a schematic structural diagram of a third perspective view of a media body according to an embodiment of the invention;
fig. 6 is a graph showing S-parameter curves of a dielectric waveguide filter according to an embodiment of the present invention;
fig. 7 is a diagram illustrating the effect of far-end suppression of a dielectric waveguide filter according to an embodiment of the present invention.
[ detailed description ] embodiments
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terms "first," "second," "third," "fourth," and the like in the description and in the claims, as well as in the drawings, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that the embodiments described herein may be practiced otherwise than as specifically illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
It should be noted that the description relating to "first", "second", etc. in the present invention is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
Referring to fig. 1 and 2 together, the present invention provides a dielectric waveguide filter 1, in which the dielectric waveguide filter 1 is used to pass a specific frequency of a signal of an antenna and greatly attenuate other frequencies. The dielectric waveguide filter 1 comprises a dielectric body 20 which is integrally pressed and formed, and a conducting layer 10 which is arranged on the surface of the dielectric body 20.
The conductive layer 10 is disposed on the surface of the dielectric body 20, so the structure of the conductive layer 10 is defined by the shape and structure of the dielectric body 20. The structure of the conductive layer 10 is substantially identical to the shape of the outer surface of the dielectric body 20 and will not be described in detail herein. The material of the conductive layer 10 is metal, preferably copper or silver.
Referring to fig. 3, 4 and 5, the dielectric body 20 is made of a solid dielectric material. The dielectric body 20 is preferably made of ceramic, that is, the dielectric body 20 is an integrally pressed ceramic dielectric body 20. The dielectric body 20 includes a first surface 21 and a second surface 22 opposite to each other, and a plurality of blind holes 241 are formed on the dielectric body to form a plurality of resonance parts 24. Two blind holes 241 are formed in each resonance part 24, one blind hole 241 of each resonance part 24 is formed in the first surface 21, and the other blind hole 241 of each resonance part 24 is formed in the second surface 22. The dielectric body 20 is further provided with an isolation groove 23 penetrating through the first surface 21 and the second surface 22 of the dielectric body 20, and the isolation groove 23 is positioned between the resonance parts 24. The media body 20 also includes opposing first and second ends 25, 26, with the length of the media body 20 being perpendicular to the first and second ends 25, 26.
The number and shape of the isolation grooves 23 are not limited, and the degree of coupling between the adjacent resonance sections 24 may be tuned. The isolation grooves 23 comprise 2 isolation grooves 23, and the isolation grooves 23 are respectively in a cross shape and a straight line shape. It is understood that the cross-shaped isolation grooves 23 are formed by connecting straight-line-shaped isolation grooves with different lengths. It will be appreciated that the walls of the isolation trenches 23 are also provided with a conductive layer 10.
The two blind holes 241 in the resonance part 24 are arranged oppositely, that is, the central axes of the two blind holes 241 in the same resonance part 24 are on the same straight line, and the two blind holes 241 in the same resonance part 24 are not communicated. The diameters of the two blind holes 241 in one and the same resonator portion 24 may be equal or different. Preferably, the blind hole 241 is located in the center of the surface of the resonance part 24. The specific number of the resonance portions 24 is not limited. Preferably, the number of the resonance parts 24 is at least four, the resonance parts 24 respectively include one input resonance part 242, one output resonance part 243 and at least two common resonance parts 244, and the input resonance part 242 and the output resonance part 243 are adjacently disposed. In the present application, the resonance parts 24 of the dielectric body 20 include two columns, and the number of the resonance parts 24 is an even number, specifically, 6, that is, the resonance parts 24 respectively include one input resonance part 242, one output resonance part 243, and four common resonance parts 244. The input resonance part 242 and the output resonance part 243 are located at the end of the dielectric body 20, and particularly, the input resonance part 242 and the output resonance part 243 are located at the first end of the dielectric body 20.
The blind hole on the second surface in the input resonance part 242 is an input blind hole 2411, the blind hole on the second surface in the output resonance part 243 is an output blind hole 2412, the other blind holes 241 on the input resonance part 242, the output resonance part 243 and the common resonance part 244 are resonance blind holes 2413, and the double resonance blind hole 2413 structure on the common resonance part 244 can suppress far-end harmonics. Namely, the resonance part 241 includes 1 input blind hole 2412, 1 output blind hole 2413 and 10 resonance blind holes 2413. The resonance blind hole 2413 and the input blind hole 2411 of the input resonance part 242 are arranged oppositely; the resonance blind hole 2413 and the output blind hole 2412 of the output resonance part 243 are arranged oppositely. The input blind hole 2411 is used for inputting signals, the output blind hole 2412 is used for outputting signals, and the resonance blind hole 2413 is used for resonance and attenuating signals with unnecessary frequencies. Preferably, the diameter of the input blind hole 2411 is equal to that of the output blind hole 2412, and the diameter of the resonance blind hole 2413 is larger than that of the input blind hole 2411. In the present application, the input resonance part 242 and the output resonance part 243 are located at the first end 25 of the dielectric waveguide filter 1, and the dielectric waveguide filter 1 is easier to input and output signals, and has better filtering effect.
Preferably, a spacer 28 is further disposed around the input blind hole 2411 and the output blind hole 2412, and the conductive layer 10 is not disposed in the spacer 28, so that the input blind hole 2411 and the output blind hole 2412 are both isolated from the conductive layer 10.
The first surface 21 and the second surface 22 of the dielectric body 20 are further respectively provided with a coupling blind hole 27, the two coupling blind holes 27 are oppositely arranged, the coupling blind hole 27 is located between the two resonance parts 24, that is, one coupling blind hole 27 is formed by the two resonance parts 24 being opened together. Preferably, the blind coupling hole 27 is located at the second end 26 of the media body 20. The two coupled blind holes 27 create a pair of cross-coupled nulls that improve near-end rejection performance.
Referring to fig. 6 and 7, the performance of the dielectric waveguide filter 1 is shown in the figure, and the dielectric waveguide filter 1 improves the problem of too narrow out-of-band rejection width, and particularly has excellent far-end rejection performance at 4-6GHz, thereby effectively improving the harmonic rejection.
While the foregoing is directed to embodiments of the present invention, it will be understood by those skilled in the art that various changes may be made without departing from the spirit and scope of the invention.
Claims (10)
1. A dielectric waveguide filter, characterized by: the dielectric waveguide filter comprises a dielectric body and a conducting layer, wherein the dielectric body is integrally pressed and formed, and the conducting layer is arranged on the surface of the dielectric body; the dielectric body comprises a first surface and a second surface which are opposite, and a plurality of groups of blind holes are arranged on the dielectric body to form a plurality of resonance parts; two blind holes are formed in each resonance part, one blind hole of each resonance part is formed in the first surface, and the other blind hole of each resonance part is formed in the second surface.
2. A dielectric waveguide filter according to claim 1, wherein: two blind holes in the resonance part are oppositely arranged.
3. A dielectric waveguide filter according to claim 1, wherein: the blind hole is located at the center of the surface of the resonance part.
4. A dielectric waveguide filter according to claim 1, wherein: the quantity of resonance portion is four at least, the resonance portion includes an input resonance portion, an output resonance portion and two at least ordinary resonance portions respectively, the input resonance portion with the output resonance portion is adjacent to be set up, the blind hole that is located the second surface of input resonance portion is the input blind hole, the blind hole that is located the second surface of output resonance portion is the output blind hole, other blind holes in input resonance portion, output resonance portion and the ordinary resonance portion are the resonance blind hole.
5. A dielectric waveguide filter according to claim 4, wherein: the diameters of the input blind hole and the output blind hole are equal, and the diameter of the resonance blind hole is larger than that of the input blind hole.
6. A dielectric waveguide filter according to claim 6, wherein: the resonance part comprises two rows, and the input resonance part and the output resonance part are positioned at the end part of the medium body.
7. A dielectric waveguide filter according to claim 4, wherein: the dielectric waveguide filter comprises a first end and a second end which are opposite, and the resonance part provided with the input blind hole or the output blind hole is positioned at the first end of the dielectric waveguide filter.
8. A dielectric waveguide filter according to claim 6, wherein: the first surface and the second surface of the medium body are respectively provided with a coupling blind hole, and the two coupling blind holes are oppositely arranged and are positioned between the two resonance parts.
9. A dielectric waveguide filter according to claim 8, wherein: the coupling blind hole is located at the second end.
10. A dielectric waveguide filter according to claim 1, wherein: the dielectric body is further provided with an isolation groove which penetrates through the first surface and the second surface of the dielectric body, and the isolation groove is located between the two adjacent resonance parts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911342684.2A CN111342181A (en) | 2019-12-23 | 2019-12-23 | Dielectric waveguide filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911342684.2A CN111342181A (en) | 2019-12-23 | 2019-12-23 | Dielectric waveguide filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111342181A true CN111342181A (en) | 2020-06-26 |
Family
ID=71185085
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911342684.2A Pending CN111342181A (en) | 2019-12-23 | 2019-12-23 | Dielectric waveguide filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111342181A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111613858A (en) * | 2020-06-30 | 2020-09-01 | 瑞声精密制造科技(常州)有限公司 | Dielectric waveguide filter |
| IT202000020311A1 (en) * | 2020-08-21 | 2022-02-21 | Commscope Italy Srl | METALLIZED DIELECTRIC WAVEGUIDE FILTERS WITH IRREGULARLY SHAPED RESONANT CAVITIES, INCLINED METALLIC APERTURES, AND/OR SPURIOUS COUPLING WINDOWS |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015079227A1 (en) * | 2013-11-28 | 2015-06-04 | Radio Design Limited | Ceramic waveguide filter apparatus and method of manufacture and use thereof |
| CN206532857U (en) * | 2017-02-22 | 2017-09-29 | 深圳乾瀚科技有限公司 | A kind of ceramic waveguide wave filter |
| CN110165345A (en) * | 2019-05-31 | 2019-08-23 | 广东国华新材料科技股份有限公司 | A kind of capacitive coupling structure and preparation method thereof |
| CN110380164A (en) * | 2019-07-11 | 2019-10-25 | 摩比科技（深圳）有限公司 | Ceramic dielectric waveguide filter |
| CN110504512A (en) * | 2019-07-25 | 2019-11-26 | 江苏江佳电子股份有限公司 | A kind of capacitive coupling structure and the dielectric filter using the structure |
| CN209766609U (en) * | 2019-04-09 | 2019-12-10 | 摩比科技（深圳）有限公司 | Symmetrical zero structure of dielectric waveguide filter and filter thereof |
-
2019
- 2019-12-23 CN CN201911342684.2A patent/CN111342181A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015079227A1 (en) * | 2013-11-28 | 2015-06-04 | Radio Design Limited | Ceramic waveguide filter apparatus and method of manufacture and use thereof |
| CN206532857U (en) * | 2017-02-22 | 2017-09-29 | 深圳乾瀚科技有限公司 | A kind of ceramic waveguide wave filter |
| CN209766609U (en) * | 2019-04-09 | 2019-12-10 | 摩比科技（深圳）有限公司 | Symmetrical zero structure of dielectric waveguide filter and filter thereof |
| CN110165345A (en) * | 2019-05-31 | 2019-08-23 | 广东国华新材料科技股份有限公司 | A kind of capacitive coupling structure and preparation method thereof |
| CN110380164A (en) * | 2019-07-11 | 2019-10-25 | 摩比科技（深圳）有限公司 | Ceramic dielectric waveguide filter |
| CN110504512A (en) * | 2019-07-25 | 2019-11-26 | 江苏江佳电子股份有限公司 | A kind of capacitive coupling structure and the dielectric filter using the structure |
Non-Patent Citations (1)
| Title |
|---|
| 马壮 等: "《工程材料与成型工艺》", 31 March 2007, 东北大学出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111613858A (en) * | 2020-06-30 | 2020-09-01 | 瑞声精密制造科技(常州)有限公司 | Dielectric waveguide filter |
| WO2022000592A1 (en) * | 2020-06-30 | 2022-01-06 | 瑞声声学科技(深圳)有限公司 | Dielectric waveguide filter |
| IT202000020311A1 (en) * | 2020-08-21 | 2022-02-21 | Commscope Italy Srl | METALLIZED DIELECTRIC WAVEGUIDE FILTERS WITH IRREGULARLY SHAPED RESONANT CAVITIES, INCLINED METALLIC APERTURES, AND/OR SPURIOUS COUPLING WINDOWS |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110265754A (en) | A kind of dielectric waveguide filter | |
| CN110556613B (en) | Dielectric filter and cross coupling structure for adjusting symmetry of transmission zero | |
| CN110808441B (en) | Dual-mode filter | |
| CN110504512A (en) | A kind of capacitive coupling structure and the dielectric filter using the structure | |
| CN111342181A (en) | Dielectric waveguide filter | |
| DE102015212233A1 (en) | Power combiner with symmetrically arranged heat sink and power combiner arrangement | |
| CN105720330B (en) | Substrate integration wave-guide bandpass filter based on novel complementary openings resonance ring structure | |
| US8384498B2 (en) | Capacitively loaded spurline filter | |
| JP3067575B2 (en) | Dielectric filter | |
| CN209843914U (en) | Dielectric waveguide filter | |
| CN209312975U (en) | A kind of microwave filter | |
| CN207690974U (en) | Substrate integral wave guide filter | |
| CN202121036U (en) | Waveguide filter of coupling medium | |
| CN212257633U (en) | Half-mode substrate integrated waveguide dual-band filter | |
| CN106785273A (en) | High-frequency selectivity bandpass filter based on 1/8th mould substrate integration wave-guides | |
| Belyaev et al. | Multilayered multiconductor stripline resonator and its application to bandpass filter with wide stopband | |
| CN106532201A (en) | Miniature wide stop band dual-mode balance band-pass filter based on annular resonator | |
| CN110534849A (en) | It is a kind of to introduce capacitively coupled dielectric waveguide filter | |
| US7782157B2 (en) | Resonant circuit, filter circuit, and multilayered substrate | |
| CN215376360U (en) | Parameter amplifying device | |
| CN110311197A (en) | Low-pass filter with transmission zero | |
| CN112599949B (en) | Dielectric filter and filtering loop thereof | |
| CN215418531U (en) | Substrate integrated waveguide band-pass filter with EBG structure | |
| CN113505893A (en) | Parameter amplifying device and preparation method thereof | |
| WO2021127933A1 (en) | Dielectric waveguide filter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200626 |