CN110534851A - A kind of dielectric filter coupled structure for realizing symmetrical transmission zero point - Google Patents
A kind of dielectric filter coupled structure for realizing symmetrical transmission zero point Download PDFInfo
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- CN110534851A CN110534851A CN201910928745.7A CN201910928745A CN110534851A CN 110534851 A CN110534851 A CN 110534851A CN 201910928745 A CN201910928745 A CN 201910928745A CN 110534851 A CN110534851 A CN 110534851A
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- blind
- blind slot
- medium block
- hole
- dielectric filter
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 16
- 230000008878 coupling Effects 0.000 claims description 19
- 238000010168 coupling process Methods 0.000 claims description 19
- 238000005859 coupling reaction Methods 0.000 claims description 19
- 230000008859 change Effects 0.000 claims description 2
- 210000003734 kidney Anatomy 0.000 claims 1
- 230000008447 perception Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006880 cross-coupling reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
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
- 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
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Abstract
The present invention relates to the blind slot that a kind of dielectric filter coupled structure for realizing symmetrical transmission zero point, the coupled structure are misplaced by two, the windowing composition between the through-hole and two blind hole resonators of two blind slots is connected；The blind slot of two dislocation is located above and below medium block, and is connected by a through-hole, which can realize the phase bit flipping in magnetic field, so that the coupled characteristic between two blind hole resonators becomes capacitive from perception.Coupled structure of the invention can be used in dielectric filter forming symmetrical transmission zero, to improve the Out-of-band rejection ability of filter.
Description
Technical field
The present invention relates to a kind of dielectric filter coupled structures for realizing symmetrical transmission zero point, belong in the communications field
Technical field of electronic components.
Background technique
Dielectric filter will realize that symmetrical transmission zero point needs to introduce the cross coupling structure of a capacitive, original scheme
It is to realize capacitive coupling by the way that depth is more than the deep blind hole of medium block 1/2, the disadvantages of this solution is that meeting is in filter passband
Low side generates harmonic wave, reduces the rejection ability of filter.
Summary of the invention
The present invention provides a kind of dielectric filter coupled structures for realizing symmetrical transmission zero point, due to being a company
Logical short-circuit structure will not generate harmonic wave in the low side of filter passband, and concrete scheme is as follows:
A kind of dielectric filter coupled structure for realizing symmetrical transmission zero point, including the first blind hole resonator, second
Blind hole resonator, the first blind slot below medium block, the second blind slot above medium block connect two dislocation blind slots
Through-hole and coupling window, wherein the first blind hole resonator, the second blind hole resonator squeezes into medium block above medium block,
First blind slot squeezes into medium block below medium block, and since at medium block center, the other end is blind to first for first blind slot one end
Hole resonator position extends, and the second blind slot squeezes into medium block above medium block, and second blind slot one end is from medium block center
Place starts, and the other end extends to the second blind hole resonator position, and through-hole is located at medium block center, for connecting the first blind slot
With the second blind slot.
Further, first blind slot below medium block can extend to immediately below the first blind hole resonator,
Or do not extend, coupling power is determined by the first blind slot end to the minimum range the first blind hole resonator, the distance
Smaller, coupling is stronger, and vice versa.
Further, second blind slot above medium block can be connected with the second blind hole resonator, or
It is not connected to, is determined by the second blind slot end to the minimum range the second blind hole resonator if being not connected to its coupling power, it should
Apart from smaller, couple stronger, vice versa, if being connected, couples most strong.
Further, the first blind slot with the second blind slot of two dislocation are connected in projection intersection by a through-hole
It connects, the diameter of through-hole is bigger, and coupling is stronger, and vice versa, and the first blind slots and the second blind slot of two dislocation, groove depth is deeper, coupling
Conjunction is stronger, and vice versa.
The beneficial effect that the present invention obtains is: the phase bit flipping in magnetic field may be implemented in coupled structure of the invention, so that two
Coupled characteristic between a dielectric resonator becomes capacitive from perception, and the present invention is the short-circuit structure of a connection, will not
Additional resonance is generated outside filter passband, to improve the Out-of-band rejection ability of filter.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is the structural schematic diagram of dielectric filter in embodiment 1；
Fig. 3 is the frequency response curve of dielectric filter in embodiment 1.
Specific embodiment
A kind of dielectric filter coupled structure with capacitive coupling characteristic as shown in Figure 1, including the first blind hole resonance
Device 1, the second blind hole resonator 2, the first blind slot 3 below medium block, the second blind slot 4 above medium block, connection
The through-hole 5 and coupling window 6 of two dislocation blind slots, wherein the first blind hole resonator 1, the second blind hole resonator 2 is from medium
Medium block is squeezed into above block, the first blind slot 3 squeezes into medium block below medium block, and 3 one end of the first blind slot is from medium block center
Starting, the other end extends to 1 position of the first blind hole resonator, and the second blind slot 4 squeezes into medium block above medium block, and second
Since at medium block center, the other end extends 4 one end of blind slot to 2 position of the second blind hole resonator, and through-hole 5 is located at medium
Block center, for connecting the first blind slot 3 and the second blind slot 4.
Embodiment 1
On the basis of above scheme, in one embodiment, as shown in connection with fig. 2, which is used for 6 chambers
In dielectric filter, produce two symmetrical transmission zeros, as shown in figure 3, improve dielectric filter with outer suppression
Characteristic processed.
As shown in Fig. 2, the dielectric filter include 6 resonance blind holes 7,8 ... ..., 11,12.Its main coupling is by adjacent humorous
Windowing between vibration hole is formed, and windowing is coupled as magnetic couplings, is opened a window bigger, magnetic couplings are stronger, and the bandwidth of filter is just
Wider, vice versa.It, can be in filter by coupled structure 13 incorporated in the present invention between non-adjacent resonant hole 7 and 10
Passband both sides respectively generate transmission zero 14,15, as shown in Figure 3.The coupling that the coupled structure 13 generates is stronger, then two biographies
Defeated zero point is closer to filter passband, and vice versa.
The basic principles, main features and advantages of the present invention have been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, various changes and improvements may be made to the invention without departing from the spirit and scope of the present invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent defines.
Claims (6)
1. a kind of dielectric filter coupled structure for realizing symmetrical transmission zero point, including the first blind hole resonator (1), second
Blind hole resonator (2), the first blind slot (3) below medium block, the second blind slot (4) above medium block, connection two
The through-hole (5) of item dislocation blind slot and coupling window (6), wherein the first blind hole resonator (1), the second blind hole resonator (2) is equal
Squeeze into medium block above medium block, the first blind slot (3) squeezes into medium block below medium block, and the first blind slot (3) one end is from Jie
Mass starts at center, and the other end extends to the first blind hole resonator (1) position, and the second blind slot (4) is above medium block
Medium block is squeezed into, since at medium block center, the other end is in place to the second blind hole resonator (2) institute for the second blind slot (4) one end
Extension is set, through-hole (5) is located at medium block center, for connecting the first blind slot (3) and the second blind slot (4).
2. the dielectric filter coupled structure according to claim 1 for realizing symmetrical transmission zero point, it is characterised in that:
The first blind slot (3) below medium block can extend to immediately below the first blind hole resonator (1), or not extend, coupling
It closes power to be determined by the first blind slot (3) end to the minimum range the first blind hole resonator (1), this is apart from smaller, coupling
Stronger, vice versa.
3. the dielectric filter coupled structure according to claim 1 for realizing symmetrical transmission zero point, it is characterised in that:
The second blind slot (4) above medium block can be connected with the second blind hole resonator (2), or be not connected to, if being not connected to
It couples power and is determined by the second blind slot (4) end to the minimum range the second blind hole resonator (2), this apart from smaller,
Coupling is stronger, and vice versa, if being connected, couples most strong.
4. the dielectric filter coupled structure according to claim 1 for realizing symmetrical transmission zero point, it is characterised in that:
Two dislocation the first blind slots (3) and the second blind slot (4) projection intersection pass through a through-hole (5) be connected, through-hole (5) it is straight
Diameter is bigger, and coupling is stronger, and vice versa.
5. the dielectric filter coupled structure according to claim 1 for realizing symmetrical transmission zero point, it is characterised in that:
The first blind slot (3) and the second blind slot (4) of two dislocation, groove depth is deeper, and coupling is stronger, and vice versa.
6. the dielectric filter coupled structure according to claim 1 for realizing symmetrical transmission zero point, it is characterised in that:
The cross section for constituting the first blind slot (3) and the second blind slot (4) can be kidney ellipsoid, ellipse, rectangle or other strips it is more
Side shape, the cross section for constituting through-hole (5) can be circle, rectangular or polygon, and the change of these shapes does not influence above-mentioned spy
The realization effect of property.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910928745.7A CN110534851A (en) | 2019-09-28 | 2019-09-28 | A kind of dielectric filter coupled structure for realizing symmetrical transmission zero point |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910928745.7A CN110534851A (en) | 2019-09-28 | 2019-09-28 | A kind of dielectric filter coupled structure for realizing symmetrical transmission zero point |
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| Publication Number | Publication Date |
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| CN110534851A true CN110534851A (en) | 2019-12-03 |
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| CN201910928745.7A Pending CN110534851A (en) | 2019-09-28 | 2019-09-28 | A kind of dielectric filter coupled structure for realizing symmetrical transmission zero point |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112072239A (en) * | 2020-08-28 | 2020-12-11 | 潮州三环（集团）股份有限公司 | Dielectric filter and manufacturing method thereof |
| WO2021135621A1 (en) * | 2019-12-31 | 2021-07-08 | 江苏灿勤科技股份有限公司 | Dielectric filter and radio transceiving device comprising same |
| WO2021135622A1 (en) * | 2019-12-31 | 2021-07-08 | 江苏灿勤科技股份有限公司 | Dielectric filter and radio receiving and transmitting device |
| WO2021170119A1 (en) * | 2020-02-28 | 2021-09-02 | 华为技术有限公司 | Dielectric filter and communication device |
| EP4109668A4 (en) * | 2020-02-20 | 2024-03-20 | Kmw Inc | Cavity filter and manufacturing method therefor |
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| US20140077900A1 (en) * | 2011-05-09 | 2014-03-20 | Cts Corporation | Dielectric Waveguide Filter with Direct Coupling and Alternative Cross-Coupling |
| CN109244615A (en) * | 2018-09-06 | 2019-01-18 | 武汉凡谷电子技术股份有限公司 | A kind of capacitive coupling device and filter |
| CN208806343U (en) * | 2018-09-06 | 2019-04-30 | 武汉凡谷电子技术股份有限公司 | A kind of capacitive coupling device and filter |
| CN110265753A (en) * | 2019-07-16 | 2019-09-20 | 深圳市国人射频通信有限公司 | A kind of dielectric waveguide filter |
| CN210468050U (en) * | 2019-09-28 | 2020-05-05 | 江西一创新材料有限公司 | Dielectric filter coupling structure for realizing symmetrical transmission zero |
-
2019
- 2019-09-28 CN CN201910928745.7A patent/CN110534851A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140077900A1 (en) * | 2011-05-09 | 2014-03-20 | Cts Corporation | Dielectric Waveguide Filter with Direct Coupling and Alternative Cross-Coupling |
| CN109244615A (en) * | 2018-09-06 | 2019-01-18 | 武汉凡谷电子技术股份有限公司 | A kind of capacitive coupling device and filter |
| CN208806343U (en) * | 2018-09-06 | 2019-04-30 | 武汉凡谷电子技术股份有限公司 | A kind of capacitive coupling device and filter |
| CN110265753A (en) * | 2019-07-16 | 2019-09-20 | 深圳市国人射频通信有限公司 | A kind of dielectric waveguide filter |
| CN210468050U (en) * | 2019-09-28 | 2020-05-05 | 江西一创新材料有限公司 | Dielectric filter coupling structure for realizing symmetrical transmission zero |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021135621A1 (en) * | 2019-12-31 | 2021-07-08 | 江苏灿勤科技股份有限公司 | Dielectric filter and radio transceiving device comprising same |
| WO2021135622A1 (en) * | 2019-12-31 | 2021-07-08 | 江苏灿勤科技股份有限公司 | Dielectric filter and radio receiving and transmitting device |
| EP4109668A4 (en) * | 2020-02-20 | 2024-03-20 | Kmw Inc | Cavity filter and manufacturing method therefor |
| WO2021170119A1 (en) * | 2020-02-28 | 2021-09-02 | 华为技术有限公司 | Dielectric filter and communication device |
| CN112072239A (en) * | 2020-08-28 | 2020-12-11 | 潮州三环（集团）股份有限公司 | Dielectric filter and manufacturing method thereof |
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