CN109672011A - Antenna and its dielectric waveguide filter - Google Patents
Antenna and its dielectric waveguide filter Download PDFInfo
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- CN109672011A CN109672011A CN201811322430.XA CN201811322430A CN109672011A CN 109672011 A CN109672011 A CN 109672011A CN 201811322430 A CN201811322430 A CN 201811322430A CN 109672011 A CN109672011 A CN 109672011A
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- dielectric waveguide
- waveguide filter
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- line
- circuit
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Classifications
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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
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
- H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
- H01Q1/246—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for base stations
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
The invention discloses a kind of antenna and its dielectric waveguide filters, the dielectric waveguide filter includes: filtering body, the outer wall of the filtering body is equipped with the first metal layer and shorting layer as electric wall, and the shorting layer includes the connecting pin being electrically connected with the first metal layer and the shorting stub with the first metal layer insulation set；And one end of low pass circuit layer is electrically connected with the short-circuit line and the other end is equipped with input and output connecting pin.The dielectric waveguide filter constitutes a kind of dielectric waveguide filter with wideband harmonics restraint, can effectively solve the narrow problem of Out-of-band rejection width by the way that low pass circuit layer is arranged on substrate；Above-mentioned dielectric waveguide filter is utilized in the antenna, has more reliably radiance.
Description
Technical field
The present invention relates to technical field of communication equipment, more particularly to a kind of antenna and its dielectric waveguide filter.
Background technique
As the high speed development of communication system enters the 5G epoch, the miniaturization of component is the pass of its communication equipment development
Key, waveguide filter will also develop as the critical component in wireless communication towards miniaturization.
The dielectric material of high dielectric constant can be applied and obtain dielectric waveguide filter on dielectric waveguide filter part, be situated between
The air filling forms of conventional waveguide filter are modified to the form of high dielectric constant material filling by matter waveguide filter,
Dielectric material transmits signal and structural support by playing the role of after molding, and metal layer is attached to dielectric material surface and is formed
Electric wall, plays electromagnetic shielding action, and this structure can significantly reduce the size and weight of waveguide filter.
Currently, the dielectric material of high dielectric constant can accomplish that Medium Wave Guide filters in traditional dielectric waveguide filter
The miniaturization of device.But it can bring furthering for higher mode, cause that Out-of-band rejection width is narrow, and Out-of-band rejection width can not in this way
It meets the requirements.
Summary of the invention
Based on this, it is necessary to provide a kind of antenna and its dielectric waveguide filter, the dielectric waveguide filter pass through in base
Low pass circuit layer is set on plate, constitutes a kind of dielectric waveguide filter with wideband harmonics restraint, it is outer to can effectively solve band
The problem for inhibiting width narrow；Above-mentioned dielectric waveguide filter is utilized in the antenna, has more reliably radiance.
Its technical solution is as follows:
On the one hand, the application provides a kind of dielectric waveguide filter, comprising: filtering body, the filtering body
Outer wall be equipped with the first metal layer and shorting layer, the shorting layer include the connecting pin being electrically connected with the first metal layer and
With the shorting stub of the first metal layer insulation set；And low pass circuit layer, one end of the low pass circuit layer and the short circuit
Line is electrically connected and the other end is equipped with the first input and output electrode.
Above-mentioned dielectric waveguide filter using with the integrated one kind that together constitutes of low pass circuit layer in use, have wideband humorous
The dielectric waveguide filter that wave inhibits, compared with traditional dielectric waveguide filter, the dielectric waveguide filter of the application can be with
Higher mode is significantly inhibited, the big width of Out-of-band rejection can be accomplished outside 3 frequencys multiplication.
Technical solution is illustrated further below:
The low pass circuit layer is strip line in one of the embodiments, and the strip line is equipped with filtering minor matters.So
Wideband harmonics restraint can be more precisely carried out by the length of setting filtering minor matters.
The low pass circuit layer is set on the filtering body in one of the embodiments,.
The shorting layer includes two in one of the embodiments, is spaced setting between two shorting layer；It is described
Dielectric waveguide filter further includes the substrate being oppositely arranged with the filtering body, and the substrate includes and first metal
The first surface and the second surface opposite with the first surface that layer is oppositely arranged, the second surface are equipped with ground plane
And two open-circuit lines with the ground plane insulation set, wherein an open-circuit line and corresponding one shorting stub are electric
An input and output electrode is connected and is formed, one end of the low pass circuit layer is electrically connected with another shorting stub, described
Input and output connecting pin is electrically connected with the open-circuit line and forms another input and output electrode.In this way, the Medium Wave Guide filters
Device compared with prior art, reduces coaxial connector and cable, reduces costs, and further reduces volume；And it utilizes
Open-circuit line is as input and output electrode, so that the connection of dielectric waveguide filter and other component is more flexible；Further, may be used
To couple bandwidth by changing short-circuit linear dimension to control the port of waveguide filter, adjustment method is simple, and adjusts and can reach
Bandwidth is coupled to very wide port.
The low pass circuit layer is set on the substrate in one of the embodiments,.
The first surface, which is equipped with, in one of the embodiments, corresponds the connection being electrically connected with the short-circuit line
Line a, wherein connecting line, by a metallic vias and the open-circuit line, another connecting line passes through another
Metallic vias is electrically connected with one end of the low pass circuit layer.
The substrate is additionally provided at least two metallic vias and electrical connection two of them in one of the embodiments,
One end of the conducting wire of the metallic vias, the conducting wire is electrically connected by one of them described metallic vias with the connecting line,
And the other end of the conducting wire is electrically connected by another described metallic vias with the open-circuit line.
The first isolation recesses, institute are equipped between the first metal layer and the short-circuit line in one of the embodiments,
The bottom wall for stating the first isolation recesses is dielectric layer.
Media filler layer is equipped in first isolation recesses in one of the embodiments,.
The shape of the connecting line is identical or approximate as the shape of the shorting stub in one of the embodiments, and institute
The area for stating connecting line is less than the area of the shorting stub.
On the other hand, present invention also provides a kind of antennas, including above-mentioned dielectric waveguide filter, the filter sheet
The material of body is the ceramic dielectric of high dielectric constant.
Above-mentioned dielectric waveguide filter is utilized in the antenna, its volume is further reduced, and is conducive to base station day
Line miniaturization.In addition, can effectively solve the narrow problem of Out-of-band rejection width using above-mentioned dielectric waveguide filter, favorably
In the reliability for guaranteeing overall performance.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of a dielectric waveguide filter as described in the examples；
Fig. 2 is the structural blast schematic diagram (input and output of shown in FIG. 1 one dielectric waveguide filter as described in the examples
Structural schematic diagram)；
Fig. 3 answers curve synoptic diagram for the dielectric waveguide filter.
Description of symbols:
100, filtering body, 110, the first metal layer, 120, shorting layer, 122, connecting pin, 124, short-circuit line, 130,
One isolation recesses, 200, substrate, 210, ground plane, 220, open-circuit line, 230, metallic vias, 240, low pass circuit layer, 242, filter
Wave minor matters, 244, input and output connecting pin, 250, connecting line, 260, conducting wire, 270, second metal layer, the 280, second insulation are recessed
Slot.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention more comprehensible, below in conjunction with attached drawing and specific embodiment party
Formula, the present invention is further described in detail.It should be understood that the specific embodiments described herein are only to solve
The present invention is released, and the scope of protection of the present invention is not limited.
It should be noted that when element is referred to as " being fixed on ", " being set to ", " being fixedly arranged on " or " install in " another yuan
Part, it can directly on the other element or there may also be elements placed in the middle.When an element is considered as " connection "
Another element, it can be directly to another element or may be simultaneously present centering elements.Further, when one
A element and another element " electrical connection ", the two can be detachable connection method, can also be with non-dismountable connection type, such as
Welding, electric bonding, metal cladding etc., may be implemented in the prior art, no longer burdensome herein.When element and another element phase
The perfect condition that mutually vertical or near normal both refers to is vertical, but the influence because manufacturing and assembling, and there may be certain
Vertical error.Term as used herein "vertical", "horizontal", "left" and "right" and similar statement are intended merely to
The purpose of explanation, is not meant to be the only embodiment.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention
The normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term " and or " used herein includes one or more
Any and all combinations of relevant listed item.
" first ", " second " involved in the present invention do not represent specific quantity and sequence, are only used for the area of title
Point.
As shown in Figure 1 to Figure 2, in the present embodiment, a kind of dielectric waveguide filter is provided, comprising: filtering body 100,
The outer wall of filtering body 100 is equipped with the first metal layer 110 and shorting layer 120, and shorting layer 120 includes and the first metal layer 110
The connecting pin 122 of electrical connection and shorting stub 124 with 110 insulation set of the first metal layer；It is additionally provided with low pass circuit layer 240,
One end of low pass circuit layer 240 is electrically connected with a short-circuit line 124 and the other end is equipped with input and output connecting pin 244.
Above-mentioned dielectric waveguide filter is in use, have width using with the integrated one kind that together constitutes of low pass circuit layer 240
The dielectric waveguide filter of frequency harmonics restraint, compared with traditional dielectric waveguide filter, the dielectric waveguide filter of the application
Higher mode can significantly be inhibited, the big width of Out-of-band rejection can be accomplished outside 3 frequencys multiplication.
It should be noted that above-mentioned dielectric waveguide filter can carry out the defeated of signal using traditional input/output unit
Enter output, such as coaxial connector and cable.
On the basis of the above embodiments, as shown in Figures 2 and 3, in an embodiment, low pass circuit layer 240 is strip line,
Strip line is equipped with filtering minor matters 242.So wideband harmonic wave can be more precisely carried out by the length of setting filtering minor matters 242
Inhibit.
Based on any of the above embodiments, as shown in Figures 2 and 3, in an embodiment, shorting layer 120 includes two,
Setting is spaced between two shorting layer 120；Dielectric waveguide filter further includes substrate 100, and substrate 100 is set to the first metal layer
On 110, substrate 200 includes the first surface 202 being arranged close to the first metal layer 110 and opposite with first surface 202 the
Two surfaces 204, second surface 204 are equipped with ground plane 210 and two open-circuit lines 220 with 210 insulation set of ground plane, and two are opened
Route 220 is electrically connected with the short-circuit line 124 of corresponding shorting layer 120 respectively.In this way, wherein an open-circuit line 220 can be input
Electrode, in addition an open-circuit line 220 can be output electrode.
Further, wherein an open-circuit line 220 is electrically connected with a corresponding shorting stub 124 and forms an input
Output electrode, one end of low pass circuit layer 240 are electrically connected with another shorting stub 124, input and output connecting pin 244 and open-circuit line
220 are electrically connected and form another input and output electrode.In this way, by being folded between filtering body 100 and substrate 200
The first metal layer 110 and shorting layer 120, and be electrically connected with shorting stub 124 (indirectly and directly by the open-circuit line 220 on substrate 200
Connect electrical connection), enable open-circuit line 220 to become input and output electrode, can so pass through open-circuit line 220 and and other component
It connects (being welded and fixed), realizes the signal input and signal output of dielectric waveguide filter.In this way, the dielectric waveguide filter
Compared with prior art, reduce coaxial connector and cable, reduce costs, and further reduce volume；And it utilizes and opens
Route 220 is used as input and output electrode, so that the connection of dielectric waveguide filter and other component is more flexible；Further,
The port that waveguide filter can be controlled by changing 124 size of short-circuit line couples bandwidth, and adjustment method is simple, and adjusting can
Bandwidth is coupled with the port for reaching very wide.
In above-described embodiment, which is set on any position of substrate 200, if not with open-circuit line
220, short circuit occurs for ground plane 210 or connecting line.It of courses, in other embodiments, which can also be with
It is set on filtering body 100.
Short circuit phenomenon does not occur for the low pass circuit layer 240 and other conductive structures.
On the basis of the above embodiments, as shown in Fig. 2, in an embodiment, substrate 200 is equipped with electrical connection open-circuit line 220
And the metallic vias 230 of shorting stub 124.And then it can be realized and be arranged on second surface 204 by way of metallic vias 230
Open-circuit line 220 and the shorting stub 124 that is arranged on first surface 202 be electrically connected so that open-circuit line 220 and shorting stub 124
Electrical connection it is relatively reliable.
Further, as shown in Fig. 2, first surface 202, which is equipped with, corresponds the connecting line being electrically connected with short-circuit line 124
250, a connecting line 250 is electrically connected by metallic vias 230 with open-circuit line 220, and another connecting line 250 passes through metallic vias
230 are electrically connected with one end of low pass circuit layer 240.Connecting line 250 can be so formed on substrate 200, and by utilizing print
Printed circuit board technology produces open-circuit line 220, low pass circuit layer and metallic vias 230, then utilizes connecting line 250 and short-circuit line
124 electrical connection (such as welding, electricity bonding), realizes and is inputted with the progress IC printed board of filtering body 100
Output electrode, and then the structure on filtering body 100 and substrate 200 can separate and manufacture and design, then be combined, Ke Yiti
High efficiency, while guaranteeing the performance (avoiding carrying out excessive manufacturing process on filtering body 100) of waveguide filter.
Specifically, as shown in Fig. 2, in an embodiment, the shape of the connecting line 250 it is identical as the shape of short-circuit line 124 or
Approximation, and the area of connecting line 250 is less than the area of short-circuit line 124.In this way, can influence to set to avoid the connection of connecting line 250
The port for the dielectric waveguide filter set couples bandwidth.
It should be noted that the shape that " shape is identical or approximate " both refers to can be the same, it is also possible to approximation
The same, as long as meeting above-mentioned requirements.
Further, in an embodiment, connecting line 250 is welded and fixed with short-circuit line 124.It can so guarantee filter
The bonding strength of ontology 100 and 200 ontology of substrate.
It of courses, in other embodiments, substrate 200 can also be set on filtering body 100, then connect again
The manufacture on stratum 210,220 machine of open-circuit line and metallic vias 230.
Based on any of the above embodiments, as shown in Fig. 2, in an embodiment, the first metal layer 110 and short-circuit line
The first isolation recesses 130 are equipped between 124, the bottom wall of the first isolation recesses 130 is dielectric layer；First surface is additionally provided with the second gold medal
Belong to layer 270, second metal layer 270 is equipped with second isolation recesses 280 opposite with the first isolation recesses 130, second metal layer 270
In be located at the second isolation recesses 280 in metal layer as connecting line 250.And then it can be by being set on the first metal layer 110
The first isolation recesses 130 are set, and encloses and sets to form short-circuit line 124, the embodiment is simple and reliable, it is ensured that the first metal layer
110 with short-circuit line 124 substantially in the same plane, reduce foozle；Similarly, it is arranged on the first surface of substrate 200
Second metal layer 270, and the second isolation recesses 280 are set in second metal layer 270, encloses and sets to form connecting line 250, in this way,
The tightness degree that is bonded of the first metal layer 110 and second metal layer 270 is improved, while can be by welding the first metal layer 110
With second metal layer 270 and short-circuit line 124 and connecting line 250 so that jail is welded and fixed in short-circuit line 124 and connecting line 250
It leans on.In addition, need to only process various sizes of short-circuit line 124 and/or the first isolation recesses 130, this Medium Wave Guide can be realized
The adjustment of the port coupling bandwidth of filter, regulative mode is simple, easy to implement.
Specifically, as shown in Fig. 2, in an embodiment, the shape of the second isolation recesses 280 and the first isolation recesses 130
Shape is identical (allowing to have foozle), and the area of the second isolation recesses 280 is greater than the area of the first isolation recesses 130；It should
The shape of connecting line 250 is identical as the shape of short-circuit line 124 (allowing to have foozle), and the area of connecting line 250 is less than short
The area of route 124.In this way, the port coupling of the dielectric waveguide filter set to avoid the connection of connecting line 250, can be influenced
Crossed belt is wide.Second isolation recesses 280 and the first isolation recesses 130 and connecting line 250 and shorting stub 124, the two belongs to similar
Figure (shape is identical, but in different size).
Specifically, the thickness of the first metal layer 110 and short-circuit line 124 is equal or approximately equal the (system for allowing to have certain
Make error).
In addition, 130 are equipped with media filler layer in the first isolation recesses in an embodiment.It so can be by exhausted first
Filled media filled layer couples bandwidth to adjust the port of dielectric waveguide filter in emargination slot 130.The media filler layer can be
Gas medium, solid dielectric etc..
Based on any of the above embodiments, in an embodiment, the material of filtering body 100 is ceramic dielectric material
Material.
Based on any of the above embodiments, in an embodiment, substrate 200 be equipped at least two metallic vias 230, with
And the conducting wire 260 of electrical connection two of them metallic vias, one end of conducting wire 260 by one of metallic vias 230 with connect
Line 250 is electrically connected, and 260 other end of conducting wire is electrically connected by another metallic vias 230 with open-circuit line 220.In this way, can be
Open-circuit line 220 is flexibly set on ground plane, avoids the interference of All other routes.The conducting wire 260 can be set in substrate 200,
And it is realized by way of metallic vias and to be electrically connected with connecting line 250 and open-circuit line 220.The particular number of the conducting wire can root
It is configured according to actual needs, herein with no restrictions.
In one embodiment, a kind of antenna is additionally provided, including above-mentioned filter, the material of filtering body 100 is height
The ceramic dielectric of dielectric constant.
Above-mentioned dielectric waveguide filter is utilized in the dielectric waveguide filter, which can solve ceramics
The porcelain body hardness of waveguide is big, immutable after machine-shaping, and port coupling bandwidth is difficult the problem of adjusting, while the input and output
Structure is connected and fixed relatively reliable, advantageously ensures that the reliability of overall performance；And its volume is further reduced, have
Conducive to antenna for base station miniaturization.In addition, above-mentioned dielectric waveguide filter can effectively solve, Out-of-band rejection width is narrow to be asked
Topic, advantageously ensures that the reliability of overall performance.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention
Range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (10)
1. a kind of dielectric waveguide filter characterized by comprising
Filtering body, the outer wall of the filtering body are equipped with the first metal layer and shorting layer as electric wall, the short circuit
Layer includes the connecting pin being electrically connected with the first metal layer and the shorting stub with the first metal layer insulation set；And
One end of low pass circuit layer, the low pass circuit layer is electrically connected with the short-circuit line and the other end connects equipped with input and output
Connect end.
2. dielectric waveguide filter according to claim 1, which is characterized in that the low pass circuit layer is strip line, institute
It states strip line and is equipped with filtering minor matters.
3. dielectric waveguide filter according to claim 1, which is characterized in that the low pass circuit layer is set to the filter
On wave device ontology.
4. dielectric waveguide filter according to claim 1, which is characterized in that the shorting layer includes two, two institutes
It states and is spaced setting between shorting layer；The dielectric waveguide filter further includes the substrate being oppositely arranged with the filtering body,
The substrate includes and the first surface that the first metal layer is oppositely arranged and second table opposite with the first surface
Face, the second surface is equipped with ground plane and two open-circuit lines with the ground plane insulation set, wherein an open circuit
Line is electrically connected with a corresponding shorting stub and is formed an input and output electrode, one end of the low pass circuit layer with
Another shorting stub electrical connection, the input and output connecting pin is electrically connected with the open-circuit line and forms another input
Output electrode.
5. dielectric waveguide filter according to claim 4, which is characterized in that the low pass circuit layer is set to the substrate
On.
6. dielectric waveguide filter according to claim 4, which is characterized in that the first surface is equipped with and the short circuit
Line corresponds the connecting line of electrical connection, wherein a connecting line is electrically connected with the open-circuit line, another connection
Line is electrically connected with one end of the low pass circuit layer.
7. dielectric waveguide filter according to claim 4, which is characterized in that the substrate is additionally provided with described at least two
The conducting wire of metallic vias described in metallic vias and electrical connection two of them, one end of the conducting wire pass through one of them described metal
Via hole is electrically connected with the connecting line, and the other end of the conducting wire passes through another described metallic vias and open-circuit line electricity
Connection.
8. dielectric waveguide filter according to claim 6, which is characterized in that the shape of the connecting line and the short circuit
The shape of line is identical or approximate, and the area of the connecting line is less than the area of the shorting stub.
9. dielectric waveguide filter according to any one of claims 1 to 8, which is characterized in that the first metal layer with
The first isolation recesses are equipped between the short-circuit line, the bottom wall of first isolation recesses is dielectric layer.
10. a kind of antenna, which is characterized in that described including dielectric waveguide filter as described in any one of claim 1 to 9
The material of filtering body is the ceramic dielectric of high dielectric constant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811322430.XA CN109672011B (en) | 2018-11-08 | 2018-11-08 | Antenna and dielectric waveguide filter thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811322430.XA CN109672011B (en) | 2018-11-08 | 2018-11-08 | Antenna and dielectric waveguide filter thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109672011A true CN109672011A (en) | 2019-04-23 |
| CN109672011B CN109672011B (en) | 2023-08-25 |
Family
ID=66142089
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811322430.XA Active CN109672011B (en) | 2018-11-08 | 2018-11-08 | Antenna and dielectric waveguide filter thereof |
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| Country | Link |
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| CN (1) | CN109672011B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110011010A (en) * | 2019-04-28 | 2019-07-12 | 重庆思睿创瓷电科技有限公司 | For the strip lines configuration of low-pass filter, low-pass filter, communication device and system |
| CN110336102A (en) * | 2019-07-09 | 2019-10-15 | 重庆思睿创瓷电科技有限公司 | A kind of dielectric waveguide filter, radio-frequency module and base station improving harmonic performance |
| WO2020093697A1 (en) * | 2018-11-08 | 2020-05-14 | 京信通信技术(广州)有限公司 | Dielectric waveguide filter and input/output structure thereof |
| WO2021098726A1 (en) * | 2019-11-21 | 2021-05-27 | 中兴通讯股份有限公司 | Filter assembly, antenna apparatus and base station system |
| WO2021197277A1 (en) * | 2020-03-30 | 2021-10-07 | Telefonaktiebolaget Lm Ericsson (Publ) | Au and ru having cwg filters, and bs having the au or ru |
| CN114792874A (en) * | 2021-01-25 | 2022-07-26 | 南京以太通信技术有限公司 | Method for manufacturing dielectric filter and method for manufacturing electrode thereof |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020093697A1 (en) * | 2018-11-08 | 2020-05-14 | 京信通信技术(广州)有限公司 | Dielectric waveguide filter and input/output structure thereof |
| CN110011010A (en) * | 2019-04-28 | 2019-07-12 | 重庆思睿创瓷电科技有限公司 | For the strip lines configuration of low-pass filter, low-pass filter, communication device and system |
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| CN110336102A (en) * | 2019-07-09 | 2019-10-15 | 重庆思睿创瓷电科技有限公司 | A kind of dielectric waveguide filter, radio-frequency module and base station improving harmonic performance |
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| WO2021197277A1 (en) * | 2020-03-30 | 2021-10-07 | Telefonaktiebolaget Lm Ericsson (Publ) | Au and ru having cwg filters, and bs having the au or ru |
| CN114792874A (en) * | 2021-01-25 | 2022-07-26 | 南京以太通信技术有限公司 | Method for manufacturing dielectric filter and method for manufacturing electrode thereof |
| CN114792874B (en) * | 2021-01-25 | 2024-04-02 | 南京以太通信技术有限公司 | Method for manufacturing dielectric filter and method for manufacturing electrode thereof |
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| Publication number | Publication date |
|---|---|
| CN109672011B (en) | 2023-08-25 |
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