CN110277612A - A kind of dielectric waveguide filter with symmetrical chiasma coupling zero point - Google Patents
A kind of dielectric waveguide filter with symmetrical chiasma coupling zero point Download PDFInfo
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- CN110277612A CN110277612A CN201910522583.7A CN201910522583A CN110277612A CN 110277612 A CN110277612 A CN 110277612A CN 201910522583 A CN201910522583 A CN 201910522583A CN 110277612 A CN110277612 A CN 110277612A
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- Prior art keywords
- blind hole
- dielectric
- medium body
- zero point
- waveguide filter
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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
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Abstract
The present invention relates to a kind of dielectric waveguide filters with symmetrical chiasma coupling zero point, including at least one layer of medium body, metal screen layer is formed by metallization on the outside of medium body, pass through welded connecting between multilayer dielectricity ontology, the filter is also connected with coaxial connector, several dielectric resonant chambers are separated out by several isolation through groove through medium body in medium body, one dielectric resonance of at least one medium body is intracavitary to be arranged with centrosymmetric first blind hole of dielectric resonant chamber and the second blind hole, the dielectric waveguide filter with symmetrical chiasma coupling zero point, it opens up by the way that the dielectric resonance in medium body is intracavitary with centrosymmetric first blind hole of dielectric resonant chamber and the second blind hole, dielectric tuning chamber is set to intercouple, generate cross-coupling zero point, improve Out-of-band rejection, to reduce to other communications band shadows It rings.
Description
Technical field
The present invention relates to dielectric waveguide filter or MONO block dielectric filters, more particularly to one kind to have symmetrically
The dielectric waveguide filter of cross-coupling zero point.
Background technique
The 5G epoch are limited to Massive MIMO (extensive antenna technology) requirement integrated to extensive antenna, pottery
Ceramic dielectric filter become mainstream, the 5G epoch, filter need to more minimize with it is integrated, ceramic powder to performance of filter have
It has a major impact, high dielectric constant (ε r) and low dielectric loss (Q × F value) are core capabilities indexs.Dielectric resonator is by ceramics
Powder body material is made, its advantage is that it is small in size, to be easy to implement circuit miniaturization, temperature stability high, and using it is upper not
By frequency limit (including millimeter wave frequency band).High dielectric constant, low dielectric loss and high q-factor are core capabilities indexs.Due to by
Structure influences, and Medium Wave Guide cannot flexibly add cross-coupling zero point structure as conventional metals chamber.
Summary of the invention
The applicant is directed to disadvantage mentioned above, has carried out Improvement, cross-coupling zero can be added with efficient, flexible by providing one kind
Point improves the dielectric waveguide filter with symmetrical chiasma coupling zero point of Out-of-band rejection.
The technical solution adopted in the present invention is as follows:
A kind of dielectric waveguide filter with symmetrical chiasma coupling zero point, including at least one layer of medium body, medium sheet
External side passes through metallization and forms metal screen layer, passes through between multilayer dielectricity ontology and is welded to connect, the filter also connects
It is connected to coaxial connector, is separated out several dielectric resonant chambers by several isolation through groove through medium body in medium body,
The intracavitary setting of one dielectric resonance of at least one medium body is blind with centrosymmetric first blind hole of dielectric resonant chamber and second
Hole.
As a further improvement of the above technical scheme:
The medium body is made of nonmetal medium of the dielectric constant ER in 2~110 ranges.
The third blind hole that center is overlapped with dielectric resonant chamber center is set between the first blind hole and the second blind hole.
First blind hole, second blind hole and the third blind hole are waist type groove blind hole.
First blind hole, second blind hole and the third blind hole are circular hole blind hole.
The depth of first blind hole, second blind hole and the third blind hole is more than the 1/2 of medium body thickness.
Tuned frequency blind hole can be opened up by being located in dielectric resonant chamber in the medium body.
The coaxial connector of the filter connection can be replaced by Surface Mount pad.
The coaxial connector and Surface Mount pad of the filter connection.
Beneficial effects of the present invention are as follows: it is described with symmetrical chiasma coupling zero point dielectric waveguide filter, by
Dielectric resonance in medium body is intracavitary open up with centrosymmetric first blind hole of dielectric resonant chamber and the second blind hole, it can be achieved that
Cross-coupling zero point improves Out-of-band rejection, so that reducing influences other communications bands.
Detailed description of the invention
Fig. 1 is the front view for the dielectric waveguide filter that zero point is coupled with symmetrical chiasma that embodiment one provides.
Fig. 2 is Figure 1A-A cross-sectional view.
Fig. 3 is the front view for the dielectric waveguide filter that zero point is coupled with symmetrical chiasma that embodiment two provides.
Fig. 4 is the front view for the dielectric waveguide filter that zero point is coupled with symmetrical chiasma that embodiment three provides.
Fig. 5 is the front view for the dielectric waveguide filter that zero point is coupled with symmetrical chiasma that example IV provides.
Fig. 6 is the front view for the dielectric waveguide filter that zero point is coupled with symmetrical chiasma that embodiment five provides.
Fig. 7 is the front view for the dielectric waveguide filter that zero point is coupled with symmetrical chiasma that embodiment six provides.
Fig. 8 is Fig. 7 B-B cross-sectional view.
Fig. 9 is the S parameter curve for the dielectric waveguide filter that zero point is coupled with symmetrical chiasma that embodiment six provides.
In figure: 1, medium body；11, coaxial connector；12, Surface Mount pad；2, isolation through groove；3, dielectric resonant chamber；4,
First blind hole；5, the second blind hole；6, third blind hole；7, tuned frequency blind hole.
Specific embodiment
Embodiment one
With reference to the accompanying drawing, illustrate the specific embodiment of the present embodiment.
As shown in Figure 1 and Figure 2, the dielectric waveguide filter with symmetrical chiasma coupling zero point of the present embodiment, including two layers
The medium body 1 being made of ceramic, 1 outside of medium body is by forming copper shield, two layers of medium body 1 by copper metallization
By being welded to connect, and 1 lower end of undermost medium body connects coaxial connector 11, passes through in two medium bodies 1 and runs through
The "T"-shaped isolation through groove 2 and " ten " font isolation through groove 2 of medium body 1 are separated out six dielectric resonant chambers 3, the medium of upside
It is opened up in one dielectric resonant chamber 3 of ontology 1 with centrosymmetric first blind hole 4 of the dielectric resonant chamber 3 and the second blind hole 5,
Tuned frequency blind hole 7 is opened up in his dielectric resonant chamber 3, the first blind hole 4 and the second blind hole 5 are waist type groove blind hole, by upper
Cross-coupling zero point can be realized in the first blind hole 4 and the second blind hole 5 opened up on the dielectric resonant chamber 3 of side, improves Out-of-band rejection,
Other communications bands are influenced to reduce.
Embodiment two
With reference to the accompanying drawing, illustrate the specific embodiment of the present embodiment.
As shown in figure 3, the dielectric waveguide filter with symmetrical chiasma coupling zero point of the present embodiment, including single layer is by stone
Medium body 1 made of English, by forming copper shield by copper metallization, the connection of 1 lower end of medium body is same in medium body 1 outside
Mandrel connector 11 is separated out four dielectric resonances by " ten " the font isolation through groove 2 through medium body 1 in medium body 1
Chamber 3, a dielectric resonant chamber 3 of medium body 1 is interior to be arranged with centrosymmetric first blind hole 4 and second of dielectric resonant chamber 3
Blind hole 5, the first blind hole 4 and the second blind hole 5 are blind round hole, by opening up the first blind hole 4 and the on a dielectric resonant chamber 3
Two blind holes 5 can be such that four dielectric resonant chambers, 3 phase mutual couples, and can generate two cross-coupling zero points, improve Out-of-band rejection,
Other communications bands are influenced to reduce.
Embodiment three
With reference to the accompanying drawing, illustrate the specific embodiment of the present embodiment.
As shown in figure 4, the dielectric waveguide filter with symmetrical chiasma coupling zero point of the present embodiment, including single layer is by glass
Medium body 1 made of glass, by forming copper shield by copper metallization, the connection of 1 lower end of medium body is same in medium body 1 outside
Mandrel connector 11 is divided by "T"-shaped isolation through groove 2 through medium body 1 and " ten " font isolation through groove 2 in medium body 1
Six dielectric resonant chambers 3 are separated out, setting is centrosymmetric with the dielectric resonant chamber 3 in a dielectric resonant chamber 3 of medium body 1
First blind hole 4 and the second blind hole 5, the first blind hole 4 and the second blind hole 5 are waist type groove blind hole, and the dielectric resonant chamber 3 is located at first
Third blind hole 6 is opened up between blind hole 4 and the second blind hole 5, third blind hole 6 is also waist type groove blind hole, the center of third blind hole 6 and institute
The center of dielectric resonant chamber 3 be overlapped, and third blind hole 6 is arranged in parallel with the first blind hole 4 and the second blind hole 5, except opening up the
Other than the single dielectric resonant chamber 3 of one blind hole 4, the second blind hole 5 and third blind hole 6, tuning is opened up in other dielectric resonant chambers 3
Frequency blind hole 7 can be made by the first blind hole 4, the second blind hole 5 and third blind hole 6 opened up on single dielectric resonant chamber 3
Six 3 phase mutual of dielectric resonant chamber couplings, can generate four cross-coupling zero points, improve Out-of-band rejection, to reduce to other
Communications band influences.
Example IV
With reference to the accompanying drawing, illustrate the specific embodiment of the present embodiment.
As shown in figure 5, the present embodiment with symmetrical chiasma coupling zero point dielectric waveguide filter, including single layer by
Medium body 1 made of pcb board, by forming copper shield by copper metallization, 1 lower end of medium body connects in medium body 1 outside
Coaxial connector 11 is connect, passes through the "T"-shaped isolation through groove 2 and " ten " font isolation through groove through medium body 1 in medium body 1
2 are separated out six dielectric resonant chambers 3, are arranged in a dielectric resonant chamber 3 of medium body 1 with 3 center pair of dielectric resonant chamber
The first blind hole 4 and the second blind hole 5 claimed, the first blind hole 4 and the second blind hole 5 are waist type groove blind hole, and the dielectric resonant chamber 3 is located at
Third blind hole 6 is opened up between first blind hole 4 and the second blind hole 5, third blind hole 6 is circular hole blind hole, the center of third blind hole 6 and institute
Dielectric resonant chamber 3 center be overlapped, except the single dielectric resonance for opening up the first blind hole 4, the second blind hole 5 and third blind hole 6
Other than chamber 3, open up tuned frequency blind hole 7 in other dielectric resonant chambers 3, by opened up on single dielectric resonant chamber 3
One blind hole 4, the second blind hole 5 and third blind hole 6 can be such that six dielectric resonant chambers, 3 phase mutual couples, can generate four intersection couplings
Zero point is closed, Out-of-band rejection is improved, so that reducing influences other communications bands.
Embodiment five
With reference to the accompanying drawing, illustrate the specific embodiment of the present embodiment.
As shown in fig. 6, the dielectric waveguide filter with symmetrical chiasma coupling zero point of the present embodiment, including single layer is by indigo plant
Medium body 1 made of jewel, 1 outside of medium body pass through by the silver-colored shielded layer of silver metallized formation, the connection of 1 lower end of medium body
Coaxial connector 11 passes through "T"-shaped isolation through groove 2 and " ten " font isolation through groove 2 through medium body 1 in medium body 1
Six dielectric resonant chambers 3 are separated out, are arranged in a dielectric resonant chamber 3 of medium body 1 with 3 central symmetry of dielectric resonant chamber
The first blind hole 4 and the second blind hole 5, the first blind hole 4 and the second blind hole 5 are circular hole blind hole, and the dielectric resonant chamber 3 is located at first
Third blind hole 6 is opened up between blind hole 4 and the second blind hole 5, third blind hole 6 is also circular hole blind hole, the center and place of third blind hole 6
Dielectric resonant chamber 3 center be overlapped, except the single dielectric resonant chamber 3 for opening up the first blind hole 4, the second blind hole 5 and third blind hole 6
In addition, tuned frequency blind hole 7 is opened up in other dielectric resonant chambers 3, it is blind by opened up on single dielectric resonant chamber 3 first
Hole 4, the second blind hole 5 and third blind hole 6 can be such that six dielectric resonant chambers, 3 phase mutual couples, can generate four cross-couplings zero
Point improves Out-of-band rejection, so that reducing influences other communications bands.
Embodiment six
With reference to the accompanying drawing, illustrate the specific embodiment of the present embodiment.
As shown in Figs. 7-9, the dielectric waveguide filter with symmetrical chiasma coupling zero point of the present embodiment, including single layer
The medium body 1 being made of ceramic, 1 outside of medium body is by the way that by the silver-colored shielded layer of silver metallized formation, 1 lower end of medium body connects
Surface Mount pad 12 is connect, passes through the "T"-shaped isolation through groove 2 and " ten " font isolation through groove 2 through medium body 1 in medium body 1
Six dielectric resonant chambers 3 are separated out, are arranged in a dielectric resonant chamber 3 of medium body 1 with 3 central symmetry of dielectric resonant chamber
The first blind hole 4 and the second blind hole 5, the first blind hole 4 and the second blind hole 5 are waist type groove, and to be located at first blind for the dielectric resonant chamber 3
Third blind hole 6 is opened up between hole 4 and the second blind hole 5, the center of the dielectric resonant chamber 3 at the center and place of third blind hole 6 is overlapped,
And third blind hole 6 is arranged vertically with the first blind hole 4 and the second blind hole 5, and is connected to the first blind hole 4 and the second blind hole 5, makes Jie
Matter dielectric resonant chamber 3 forms a " I " fonts blind hole, except opening up the single of the first blind hole 4, the second blind hole 5 and third blind hole 6
Other than dielectric resonant chamber 3, tuned frequency blind hole 7 is opened up in other dielectric resonant chambers 3, by opening up on dielectric resonant chamber 3
The work being made of the first blind hole 4, the second blind hole 5 and third blind hole 6 " font blind hole, six dielectric resonant chambers 3 can be made mutual
There is coupling, four cross-coupling zero points can be generated, improve Out-of-band rejection, so that reducing influences other communications bands.
Medium body 1 in embodiment one to six can be by any nonmetal medium of the dielectric constant ER in 2~110 ranges
Instead of being made.
The depth of the first blind hole 4, the second blind hole 5 and third blind hole 6 in embodiment one to six is more than that medium body 1 is thick
The 1/2 of degree, while being no more than 1 thickness of medium body, i.e., it does not get through.
Above description is explanation of the invention, is not intended to limit the invention, and limited range of the present invention is referring to right
It is required that the present invention can make any type of modification without prejudice to basic structure of the invention.
Claims (9)
1. a kind of dielectric waveguide filter with symmetrical chiasma coupling zero point, including at least one layer of medium body (1), medium sheet
Metal screen layer is formed by metallization on the outside of body (1), passes through welded connecting, the filtering between multilayer dielectricity ontology (1)
Device is also connected with coaxial connector (11), passes through several isolation through groove (2) through medium body (1) point in medium body (1)
It is separated out several dielectric resonant chambers (3), it is characterised in that: setting in a dielectric resonant chamber (3) of at least one medium body (1)
With centrosymmetric first blind hole (4) of dielectric resonant chamber (3) and the second blind hole (5).
2. the dielectric waveguide filter according to claim 1 with symmetrical chiasma coupling zero point, it is characterised in that: described
Medium body (1) is made of nonmetal medium of the dielectric constant ER in 2~110 ranges.
3. the dielectric waveguide filter according to claim 1 with symmetrical chiasma coupling zero point, it is characterised in that: first
The third blind hole (6) that center is overlapped with dielectric resonant chamber (3) center is set between blind hole (4) and the second blind hole (5).
4. the dielectric waveguide filter according to claim 3 with symmetrical chiasma coupling zero point, it is characterised in that: described
First blind hole (4), second blind hole (5) and the third blind hole (6) are waist type groove blind hole.
5. the dielectric waveguide filter according to claim 3 with symmetrical chiasma coupling zero point, it is characterised in that: described
First blind hole (4), second blind hole (5) and the third blind hole (6) are circular hole blind hole.
6. the dielectric waveguide filter according to claim 3 with symmetrical chiasma coupling zero point, it is characterised in that: described
The depth of first blind hole (4), second blind hole (5) and the third blind hole (6) is more than the 1/2 of medium body (1) thickness.
7. the dielectric waveguide filter according to claim 1 with symmetrical chiasma coupling zero point, it is characterised in that: described
Tuned frequency blind hole (7) can be opened up by being located in dielectric resonant chamber (3) in medium body (1).
8. the dielectric waveguide filter according to claim 1 with symmetrical chiasma coupling zero point, it is characterised in that: described
The coaxial connector (11) of filter connection can be replaced by Surface Mount pad (12).
9. the dielectric waveguide filter according to claim 1 with symmetrical chiasma coupling zero point, it is characterised in that: described
The coaxial connector (11) and Surface Mount pad (12) of filter connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910522583.7A CN110277612A (en) | 2019-06-17 | 2019-06-17 | A kind of dielectric waveguide filter with symmetrical chiasma coupling zero point |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910522583.7A CN110277612A (en) | 2019-06-17 | 2019-06-17 | A kind of dielectric waveguide filter with symmetrical chiasma coupling zero point |
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| Publication Number | Publication Date |
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| CN110277612A true CN110277612A (en) | 2019-09-24 |
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| CN201910522583.7A Pending CN110277612A (en) | 2019-06-17 | 2019-06-17 | A kind of dielectric waveguide filter with symmetrical chiasma coupling zero point |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110739510A (en) * | 2019-10-29 | 2020-01-31 | 摩比科技（深圳）有限公司 | dielectric waveguide filter with cross-cavity coupling structure |
| WO2021062787A1 (en) * | 2019-09-30 | 2021-04-08 | 华为技术有限公司 | Dielectric filter and communication device |
| US11335984B2 (en) | 2020-04-16 | 2022-05-17 | Kunshan Luxshare Rf Technology Co., Ltd. | Dielectric waveguide filter |
-
2019
- 2019-06-17 CN CN201910522583.7A patent/CN110277612A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021062787A1 (en) * | 2019-09-30 | 2021-04-08 | 华为技术有限公司 | Dielectric filter and communication device |
| CN110739510A (en) * | 2019-10-29 | 2020-01-31 | 摩比科技（深圳）有限公司 | dielectric waveguide filter with cross-cavity coupling structure |
| US11335984B2 (en) | 2020-04-16 | 2022-05-17 | Kunshan Luxshare Rf Technology Co., Ltd. | Dielectric waveguide filter |
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