CN210866431U - Dielectric waveguide filter with through-hole capacitor - Google Patents
Dielectric waveguide filter with through-hole capacitor Download PDFInfo
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- CN210866431U CN210866431U CN201922497108.7U CN201922497108U CN210866431U CN 210866431 U CN210866431 U CN 210866431U CN 201922497108 U CN201922497108 U CN 201922497108U CN 210866431 U CN210866431 U CN 210866431U
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Abstract
A dielectric waveguide filter with a through hole capacitor comprises a strip-shaped ceramic dielectric block, a plurality of resonance grooves formed in a first side surface of the ceramic dielectric block, a plurality of T-shaped through grooves formed in the middle of the ceramic dielectric block, and at least one strip-shaped capacitor groove formed in the first side surface of the ceramic dielectric block and located between two adjacent resonance grooves; the bottom of the strip-shaped capacitor groove is provided with a first through hole capacitor penetrating through the ceramic dielectric block; and the first side surface, the second side surface and the circumferential side surface of the ceramic dielectric block, the inner side wall of the resonant groove, the inner side wall of the T-shaped through groove and the inner side wall of the strip-shaped capacitor groove are all plated with conductive layers, and the first through hole capacitor and the second through hole capacitor are provided with insulating isolating rings. Therefore, the coupling capacitor and the zero peak value can be adjusted, and different requirements of users are met.
Description
Technical Field
The utility model relates to a 5G communication antenna technical field, especially a dielectric waveguide filter with through-hole electric capacity.
Background
With the development of communication technology, the 5 th generation communication system is going to be commercially available. The characteristics of low time delay and high bandwidth of the 5G communication system provide a better platform for people's life and the application of the Internet of things. The 5G communication system improves signal coverage by introducing an active antenna array (the number of cooperative antennas on the base station side can support up to 128), and 128 filters are connected behind each antenna, which puts requirements on miniaturization of the filters. The high dielectric and low loss characteristics of the dielectric ceramic filter are very suitable for being applied to a 5G communication system. Compared with the traditional metal filter, the volume of the dielectric ceramic filter can be reduced to about 1/5.
The existing dielectric waveguide filter is provided with a plurality of resonators, two round blind holes are arranged between two adjacent resonators, and the round blind holes are used for forming blind hole capacitors. The blind hole capacitor forms zero points on two sides of a main peak in a signal waveform respectively. The size of the blind hole capacitor cannot be adjusted, and the zero peak value in the signal waveform cannot be adjusted.
SUMMERY OF THE UTILITY MODEL
In view of this, the present invention provides a dielectric waveguide filter with through-hole capacitors, which can adjust the coupling capacitance and the zero peak value, and meet different needs of users, so as to solve the above problems.
A dielectric waveguide filter with a through hole capacitor comprises a strip-shaped ceramic dielectric block, a plurality of resonance grooves formed in a first side surface of the ceramic dielectric block, a plurality of T-shaped through grooves formed in the middle of the ceramic dielectric block, and at least one strip-shaped capacitor groove formed in the first side surface of the ceramic dielectric block and located between two adjacent resonance grooves; the bottom of the strip-shaped capacitor groove is provided with a first through hole capacitor penetrating through the ceramic dielectric block; and the first side surface, the second side surface and the circumferential side surface of the ceramic dielectric block, the inner side wall of the resonant groove, the inner side wall of the T-shaped through groove and the inner side wall of the strip-shaped capacitor groove are all plated with conductive layers, and the first through hole capacitor and the second through hole capacitor are provided with insulating isolating rings.
Furthermore, the insulating isolation ring is arranged on the inner side walls of the first through hole capacitor and the second through hole capacitor.
Further, the insulating isolation ring is an annular insulating belt.
Further, the insulating isolation ring is a blank region.
Furthermore, the insulating isolation ring is arranged outside one end, facing the second side face of the ceramic dielectric block, of the first through hole capacitor.
Furthermore, the insulating isolating ring is a sinking hollow groove, and an annular blank area is arranged in the sinking hollow groove.
Further, the ceramic dielectric block further comprises at least one circular capacitor groove which is arranged on the first side surface of the ceramic dielectric block and is positioned between two adjacent resonant grooves.
Further, the strip-shaped capacitor slot is located between the two resonant slots at the first end of the ceramic dielectric block, and the circular capacitor slot is located between the two resonant slots at the second end of the ceramic dielectric block.
Further, the length direction of the strip-shaped capacitor slot is parallel to the length direction of the ceramic dielectric block.
Compared with the prior art, the dielectric waveguide filter with the through-hole capacitor comprises a long-strip-shaped ceramic dielectric block, a plurality of resonance grooves formed in the first side surface of the ceramic dielectric block, a plurality of T-shaped through grooves formed in the middle of the ceramic dielectric block, and at least one strip-shaped capacitor groove formed in the first side surface of the ceramic dielectric block and located between two adjacent resonance grooves; the bottom of the strip-shaped capacitor groove is provided with a first through hole capacitor penetrating through the ceramic dielectric block; and the first side surface, the second side surface and the circumferential side surface of the ceramic dielectric block, the inner side wall of the resonant groove, the inner side wall of the T-shaped through groove and the inner side wall of the strip-shaped capacitor groove are all plated with conductive layers, and the first through hole capacitor and the second through hole capacitor are provided with insulating isolating rings. Therefore, the coupling capacitor and the zero peak value can be adjusted, and different requirements of users are met.
Drawings
Embodiments of the present invention are described below with reference to the accompanying drawings, in which:
fig. 1 is a perspective view of a dielectric waveguide filter with a through-hole capacitor according to a first embodiment of the present invention.
Fig. 2 is a perspective view of a dielectric waveguide filter with a through-hole capacitor according to a first embodiment of the present invention.
Fig. 3 is a perspective view of a second embodiment of the present invention.
Fig. 4 is a signal waveform diagram of the dielectric waveguide filter with through-hole capacitors provided by the present invention.
Detailed Description
The following describes in further detail specific embodiments of the present invention based on the drawings. It should be understood that the description herein of embodiments of the invention is not intended to limit the scope of the invention.
Referring to fig. 1 and 2, the dielectric waveguide filter with a through-hole capacitor according to the present invention includes a ceramic dielectric block 10 having a long strip shape, a plurality of resonant slots 20 disposed on a first side surface of the ceramic dielectric block 10, a plurality of T-shaped through slots 30 disposed at the middle portion of the ceramic dielectric block 10, at least one strip-shaped capacitor slot 40 disposed on the first side surface of the ceramic dielectric block 10 and located between two adjacent resonant slots 20, and at least one circular capacitor slot 60 disposed on the first side surface of the ceramic dielectric block 10 and located between two adjacent resonant slots 20.
The plurality of resonance grooves 20 include a first resonance groove a, a second resonance groove b, a third resonance groove c, a fourth resonance groove d, a fifth resonance groove e, a sixth resonance groove f, a seventh resonance groove g, an eighth resonance groove h, a ninth resonance groove i, a tenth resonance groove i, and an eleventh resonance groove j. The resonant grooves 20 are equally spaced along the edge of the ceramic dielectric block 10.
In the present embodiment, the stripe-shaped capacitor slot 40 is located between the second resonance slot b and the third resonance slot c at the first end of the ceramic dielectric block 10, and the longitudinal direction of the stripe-shaped capacitor slot 40 is perpendicular to the line connecting the central axes of the second resonance slot b and the third resonance slot c, that is, parallel to the longitudinal direction of the ceramic dielectric block 10. The circular capacitor groove 60 is located between the seventh resonance groove g and the eighth resonance groove h at the second end of the ceramic dielectric block 10.
The bottom of the strip-shaped capacitor groove 40 is provided with a first through-hole capacitor 50 penetrating through the ceramic dielectric block 10, and the bottom of the circular capacitor groove 60 is provided with a second through-hole capacitor 70 penetrating through the ceramic dielectric block 10.
The first side surface, the second side surface and the circumferential side surface of the ceramic dielectric block 10, the inner side wall of the resonant groove 20, the inner side wall of the T-shaped through groove 30, the inner side wall of the strip-shaped capacitor groove 40 and the inner side wall of the circular capacitor groove 60 are plated with conductive layers.
The first via capacitor 50 and the second via capacitor 70 are provided with insulating isolation rings.
The utility model discloses an in the first embodiment, insulating isolating ring sets up on the inside wall of first through-hole electric capacity 50 and second through-hole electric capacity 70, and insulating isolating ring can be annular insulating band, also can be for not plating the white district that leaves of conducting layer.
Referring to fig. 3, in a second embodiment of the present invention, the insulating isolation ring is disposed outside the end of the first through-hole capacitor 50 and the end of the second through-hole capacitor 70 facing the second side of the ceramic dielectric block 10, and the insulating isolation ring may be an annular insulating band, or a blank area without plating a conductive layer, or a sunken hollow groove, in which an annular blank area is disposed.
With reference to fig. 4, by setting the position of the first through-hole capacitor 50 in the strip-shaped capacitor slot 40, the coupling capacitance of the first through-hole capacitor 50 and the peak value of the zero point Q in the signal waveform can be adjusted, so that the peak values of the two zero points on the two sides of the main peak are symmetrical or asymmetrical. The closer the first via capacitor 50 is to the center of the stripe-shaped capacitor slot 40, the smaller the coupling capacitance value of the first via capacitor 50.
Compared with the prior art, the dielectric waveguide filter with the through-hole capacitor of the utility model comprises a strip-shaped ceramic dielectric block 10, a plurality of resonance grooves 20 arranged on the first side surface of the ceramic dielectric block 10, a plurality of T-shaped through grooves 30 arranged in the middle of the ceramic dielectric block 10, and at least one strip-shaped capacitor groove 40 arranged on the first side surface of the ceramic dielectric block 10 and positioned between two adjacent resonance grooves 20; the bottom of the strip-shaped capacitor groove 40 is provided with a first through-hole capacitor 50 penetrating through the ceramic dielectric block 10; the first side surface, the second side surface and the circumferential side surface of the ceramic dielectric block 10, the inner side wall of the resonant groove 20, the inner side wall of the T-shaped through groove 30 and the inner side wall of the strip-shaped capacitor groove 40 are all plated with conductive layers, and the first through-hole capacitor 50 and the second through-hole capacitor 70 are provided with insulating isolation rings. Therefore, the coupling capacitor and the zero peak value can be adjusted, and different requirements of users are met.
The above description is only for the preferred embodiment of the present invention and should not be construed as limiting the scope of the present invention, and any modification, equivalent replacement or improvement within the spirit of the present invention is encompassed by the claims of the present invention.
Claims (9)
1. A dielectric waveguide filter having a via capacitor, characterized by: the resonant cavity comprises a strip-shaped ceramic dielectric block, a plurality of resonant grooves arranged on a first side surface of the ceramic dielectric block, a plurality of T-shaped through grooves arranged in the middle of the ceramic dielectric block, and at least one strip-shaped capacitor groove arranged on the first side surface of the ceramic dielectric block and positioned between two adjacent resonant grooves; the bottom of the strip-shaped capacitor groove is provided with a first through hole capacitor penetrating through the ceramic dielectric block; and the first side surface, the second side surface and the circumferential side surface of the ceramic dielectric block, the inner side wall of the resonant groove, the inner side wall of the T-shaped through groove and the inner side wall of the strip-shaped capacitor groove are all plated with conductive layers, and the first through hole capacitor and the second through hole capacitor are provided with insulating isolating rings.
2. A dielectric waveguide filter with via capacitors as claimed in claim 1, wherein: the insulating isolation ring is arranged on the inner side walls of the first through hole capacitor and the second through hole capacitor.
3. A dielectric waveguide filter with via capacitors as claimed in claim 2, wherein: the insulating isolation ring is an annular insulating belt.
4. A dielectric waveguide filter with via capacitors as claimed in claim 2, wherein: the insulating isolation ring is a white-remaining area.
5. A dielectric waveguide filter with via capacitors as claimed in claim 1, wherein: the insulating isolation ring is arranged outside one end, facing the second side face of the ceramic dielectric block, of the first through hole capacitor.
6. A dielectric waveguide filter with via capacitors as claimed in claim 5, wherein: the insulating isolating ring is a sinking hollow groove, and an annular blank area is arranged in the sinking hollow groove.
7. A dielectric waveguide filter with via capacitors as claimed in claim 1, wherein: the ceramic dielectric block further comprises at least one circular capacitor groove which is arranged on the first side surface of the ceramic dielectric block and is positioned between the two adjacent resonant grooves.
8. A dielectric waveguide filter with via capacitors as claimed in claim 7, wherein: the strip-shaped capacitor slot is positioned between the two resonance slots at the first end of the ceramic dielectric block, and the circular capacitor slot is positioned between the two resonance slots at the second end of the ceramic dielectric block.
9. A dielectric waveguide filter with via capacitors as claimed in claim 8, wherein: the length direction of the strip-shaped capacitor slot is parallel to the length direction of the ceramic dielectric block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922497108.7U CN210866431U (en) | 2019-12-31 | 2019-12-31 | Dielectric waveguide filter with through-hole capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922497108.7U CN210866431U (en) | 2019-12-31 | 2019-12-31 | Dielectric waveguide filter with through-hole capacitor |
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| CN210866431U true CN210866431U (en) | 2020-06-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201922497108.7U Active CN210866431U (en) | 2019-12-31 | 2019-12-31 | Dielectric waveguide filter with through-hole capacitor |
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Cited By (1)
| 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 |
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2019
- 2019-12-31 CN CN201922497108.7U patent/CN210866431U/en active Active
Cited By (1)
| 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 |
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