CN112072253A - L-band miniature ceramic power divider with symmetrical structure - Google Patents
L-band miniature ceramic power divider with symmetrical structure Download PDFInfo
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- CN112072253A CN112072253A CN202010885683.9A CN202010885683A CN112072253A CN 112072253 A CN112072253 A CN 112072253A CN 202010885683 A CN202010885683 A CN 202010885683A CN 112072253 A CN112072253 A CN 112072253A
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- 239000000919 ceramic Substances 0.000 title claims abstract description 15
- 239000003990 capacitor Substances 0.000 claims abstract description 40
- 239000002184 metal Substances 0.000 claims abstract description 26
- 239000000758 substrate Substances 0.000 claims abstract description 5
- 238000005452 bending Methods 0.000 abstract description 5
- 238000010923 batch production Methods 0.000 abstract description 3
- 230000010354 integration Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 3
- 238000002955 isolation Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P5/00—Coupling devices of the waveguide type
- H01P5/12—Coupling devices having more than two ports
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Abstract
The invention discloses an L-waveband micro-ceramic power divider with a symmetrical structure in the field of power dividers, which comprises a laminated body formed by jointly stacking a plurality of layers of first dielectric plates and at least two layers of second dielectric plates, wherein the side surface of the laminated body is printed with an input end, a grounding end and at least two electrodes of the output end; the inductor comprises a first dielectric plate, a second dielectric plate and a capacitor, wherein the first dielectric plate is provided with through holes, at least two layers of first dielectric plates are provided with inductors of symmetrical structures formed by metal conduction bands, at least two layers of first dielectric plates are provided with capacitors formed by symmetrical metal patterns, and the inductors are communicated through the through holes and form a metal circuit with the capacitors, an input end, an output end and a grounding end. The invention ensures that the amplitude-phase balance degree of the power divider is excellent through the symmetrical structure, the power divider has small volume and light weight through the conduction band bending and the multilayer structure, in addition, the power divider has small loss and low cost, is suitable for batch production, can be processed into a patch form, can also be embedded in a substrate, and is very convenient for integration in a microwave system.
Description
Technical Field
The invention relates to the field of power dividers, in particular to an L-band miniature ceramic power divider with a symmetrical structure.
Background
The power divider is an important passive device in a microwave system circuit, and has the function of realizing power distribution from one path of signal to multiple paths of signals or realizing power synthesis from multiple paths of signals to one path of signal. A good power divider should have low in-band loss, wide operating bandwidth, good phase and amplitude balance between output signals, and high isolation between output signals, while also being as small as possible. The traditional power divider is mainly realized in a form of a microstrip transmission line or a strip line, belongs to a planar structure, occupies a large area, cannot meet the miniaturization requirement of a microwave system, and is difficult to integrate. In order to meet the miniaturization requirement of the device, the initial method is to reduce the size of the resonator and further reduce the volume of the device by adopting a dielectric material with high dielectric constant, high quality factor and low loss, but the traditional process technology cannot effectively reduce the size area of the device.
Disclosure of Invention
The present invention is directed to an L-band micro ceramic power divider with a symmetrical structure, so as to solve the problems mentioned in the background art.
In order to achieve the purpose, the invention provides the following technical scheme:
an L-band miniature ceramic power divider with a symmetrical structure comprises a laminated body formed by jointly stacking a plurality of layers of first dielectric plates and at least two layers of second dielectric plates, wherein the side surface of the laminated body is printed with an input end, a grounding end and at least two electrodes of the output end; the inductor comprises a first dielectric plate, a second dielectric plate and a capacitor, wherein the first dielectric plate is provided with through holes, at least two layers of first dielectric plates are provided with inductors of symmetrical structures formed by metal conduction bands, at least two layers of first dielectric plates are provided with capacitors formed by symmetrical metal patterns, and the inductors are communicated through the through holes and form a metal circuit with the capacitors, an input end, an output end and a grounding end.
As an improved scheme of the invention, the inductor is of a spiral broken line inductor structure, and metal conduction bands forming the inductor are wound into a rectangular bent line.
As an improved scheme of the invention, the number of the inductors is two, namely, the inductors are L1 and L2, and the number of the capacitors is three, namely, the capacitors are C1, C2 and C3; one end of the capacitor C1 is connected with the input end, and the other end is grounded; one ends of the inductors L1 and L2 are commonly connected with the input end, the other end of the inductor L1 is connected with one of the output ends and one end of the capacitor C2, the other end of the inductor L2 is connected with the other output end and one end of the capacitor C3, and the other ends of the capacitors C2 and C3 are connected.
As a modified scheme of the invention, the metal pattern on one first dielectric plate is a common plate of the capacitors C2 and C3, and the metal pattern on the other adjacent first dielectric plate is the other plate of the capacitors C2 and C3.
As a modification of the present invention, a second dielectric plate is provided at the uppermost part of the stacked body, and a second dielectric plate is provided at the lowermost part of the stacked body.
Has the advantages that: the invention ensures that the amplitude-phase balance degree of the power divider is excellent through the symmetrical structure, the power divider has small volume and light weight through the conduction band bending and the multilayer structure, in addition, the power divider has small loss and low cost, is suitable for batch production, can be processed into a patch form, can also be embedded in a substrate, and is very convenient for integration in a microwave system.
Drawings
Fig. 1 is a schematic structural diagram of a power divider according to the present invention;
FIG. 2 is a schematic circuit diagram of the power divider of the present invention;
fig. 3 is a schematic diagram of a layered structure of the power divider of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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.
An L-band miniature ceramic power divider with a symmetrical structure comprises a laminated body formed by jointly stacking a plurality of first dielectric plates and at least two second dielectric plates, wherein the side surface of the laminated body is printed with an Input port, a ground terminal (GND) and electrodes of at least two output ends; the first dielectric slabs are provided with via holes, wherein at least two layers of the first dielectric slabs are provided with inductors which are of symmetrical structures and are composed of metal conduction bands, at least two layers of the first dielectric slabs are provided with capacitors which are composed of symmetrical metal patterns, the inductors are communicated among different layers through the via holes, and the inductors, the capacitor, the input end, the output end and the grounding end form a metal circuit.
In embodiment 1, taking a power divider as a one-to-two power divider as an example, as shown in fig. 1-2, two inductors are provided, namely, inductors L1 and L2, three capacitors are provided, namely, capacitors C1, C2 and C3, and two Output ports (Output port1 and Output port2) are provided at Output ends; the capacitor C1 is an Input filter capacitor, one end of which is connected to the Input port (Input port), and the other end of which is grounded; one ends of the inductors L1 and L2 are commonly connected with the input end, the other end of the inductor L1 is connected with one of the output ends and one end of the capacitor C2, the other end of the inductor L2 is connected with the other output end and one end of the capacitor C3, and the other ends of the capacitors C2 and C3 are connected.
Compared with the prior art in which only one capacitor connected between inductors L1 and L2 exists, the capacitors C2 and C3 are symmetrically distributed, so that the amplitude and the phase of the power divider can be kept at more excellent balance, and the isolation of the power divider can be flexibly adjusted by adjusting the sizes of the capacitors C2 and C3.
As shown in fig. 3, the dielectric sheet is an LTCC ceramic substrate, and 13 layers are provided in total and stacked to constitute a laminated body. The 1 st, 4 th, 5 th, 6 th, 7 th, 10 th and 13 th layers are second dielectric plates, the surfaces of the second dielectric plates are not printed with metal, and the rest are first dielectric plates. The second dielectric plate is mainly used for increasing the thickness of the laminated body and preventing the laminated body from being bent and deformed due to over-thinness, and the number of the second dielectric plates can be increased or decreased according to requirements.
The metal pattern on the first dielectric plate of the 2 nd layer is a common polar plate of the capacitors C2 and C3, the metal pattern on the first dielectric plate of the 3 rd layer is the other polar plate of the capacitors C2 and C3, and the metal patterns on the first dielectric plate of the 3 rd layer are symmetrical. The metal pattern on the first dielectric plate of the 11 th layer constitutes one plate of the capacitor C1, and the metal pattern on the first dielectric plate of the 12 th layer is a ground layer, constituting a ground plate of the capacitor C1.
The metal conduction bands on the first dielectric plates on the 8 th layer and the 9 th layer respectively form inductors L1 and L2, preferably, the inductors are spiral broken line inductor structures, the metal conduction bands forming the inductors are wound into rectangular bending lines, the length of the actually printed inductors is increased by the rectangular bending structures, the working frequency of the power divider can be correspondingly reduced, the power divider is miniaturized, and meanwhile, the excellent performance is kept.
Experiments prove that the one-to-two power divider provided by the embodiment has the port standing-wave ratio of less than 1.3, the output isolation degree of more than 17dB, the amplitude balance degree of less than 0.2dB, the phase balance degree of less than 1 degree, the maximum insertion loss of less than 0.3dB, excellent indexes and the size of only 3.2mm multiplied by 1.6mm multiplied by 1.1mm within the working frequency band of 1450MHz to 1900 MHz.
The invention ensures that the amplitude-phase balance degree of the power divider is excellent through the symmetrical structure, the power divider has small volume and light weight through the conduction band bending and the multilayer structure, in addition, the power divider has small loss and low cost, is suitable for batch production, can be processed into a patch form, can also be embedded in a substrate, and is very convenient for integration in a microwave system.
Although the present description is described in terms of embodiments, not every embodiment includes only a single embodiment, and such description is for clarity only, and those skilled in the art should be able to integrate the description as a whole, and the embodiments can be appropriately combined to form other embodiments as will be understood by those skilled in the art.
In the description of the present invention, it should be noted that relational terms such as first and second, and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
In the description of the present invention, it should be further noted that the terms "upper", "lower", "inside", "outside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships conventionally put in use of products of the present invention, which are merely for convenience of description and simplification of description, but do not indicate or imply that the referred devices or elements must have specific orientations, be constructed in specific orientations, and be operated, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed" and "connected" are to be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Therefore, the above description is only a preferred embodiment of the present application, and is not intended to limit the scope of the present application; all changes which come within the meaning and range of equivalency of the claims are to be embraced within their scope.
Claims (6)
1. An L-band miniature ceramic power divider with a symmetrical structure comprises a laminated body formed by jointly stacking a plurality of layers of first dielectric plates and at least two layers of second dielectric plates, wherein the side surface of the laminated body is printed with an input end, a grounding end and at least two electrodes of the output end; the inductor is characterized in that at least two layers of first dielectric plates comprise inductors with symmetrical structures and composed of metal conduction bands, at least two layers of first dielectric plates comprise capacitors with symmetrical metal patterns, and the inductors are communicated through the through holes and form a metal circuit with the capacitors, the input end, the output end and the grounding end.
2. The L-band miniature ceramic power divider with a symmetrical structure as claimed in claim 1, wherein said inductor has a spiral broken line inductor structure, and the metal conduction bands forming the inductor are wound into a rectangular bent line.
3. The L-band miniature ceramic power divider with the symmetrical structure as claimed in claim 1 or 2, wherein there are two inductors, respectively inductor L1 and L2, three capacitors, respectively capacitor C1, C2 and C3, and two output terminals; one end of the capacitor C1 is connected with the input end, and the other end is grounded; one ends of the inductors L1 and L2 are commonly connected with the input end, the other end of the inductor L1 is connected with one of the output ends and one end of the capacitor C2, the other end of the inductor L2 is connected with the other output end and one end of the capacitor C3, and the other ends of the capacitors C2 and C3 are connected.
4. The L-band micro-ceramic power divider with a symmetrical structure as claimed in claim 3, wherein the metal pattern on one first dielectric plate is a common plate of capacitors C2, C3, and the metal pattern on another adjacent first dielectric plate is another plate of capacitors C2, C3.
5. The L-band micro-ceramic power divider with a symmetrical structure as claimed in claim 1 or 2, wherein a second dielectric plate is located at the uppermost part of the stack, and a second dielectric plate is located at the lowermost part of the stack.
6. The L-band micro-ceramic power divider with a symmetrical structure as claimed in claim 1 or 2, wherein the dielectric plate is an LTCC ceramic substrate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202010885683.9A CN112072253A (en) | 2020-08-28 | 2020-08-28 | L-band miniature ceramic power divider with symmetrical structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010885683.9A CN112072253A (en) | 2020-08-28 | 2020-08-28 | L-band miniature ceramic power divider with symmetrical structure |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103943930A (en) * | 2014-05-13 | 2014-07-23 | 苏州博海创业微系统有限公司 | LTCC (low temperature co-fired ceramic) multi-path balance power divider |
| CN107078721A (en) * | 2014-10-10 | 2017-08-18 | 株式会社村田制作所 | Wave splitter device |
| CN107464976A (en) * | 2017-08-22 | 2017-12-12 | 南京理工大学 | A kind of follow-on power splitters of L-waveband miniature LTCC six |
| CN108767411A (en) * | 2017-06-07 | 2018-11-06 | 深圳市永盛微波技术有限公司 | A kind of power splitter |
| CN212695293U (en) * | 2020-08-28 | 2021-03-12 | 中国电子科技集团公司第四十三研究所 | L-band miniature ceramic power divider with symmetrical structure |
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- 2020-08-28 CN CN202010885683.9A patent/CN112072253A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103943930A (en) * | 2014-05-13 | 2014-07-23 | 苏州博海创业微系统有限公司 | LTCC (low temperature co-fired ceramic) multi-path balance power divider |
| CN107078721A (en) * | 2014-10-10 | 2017-08-18 | 株式会社村田制作所 | Wave splitter device |
| CN108767411A (en) * | 2017-06-07 | 2018-11-06 | 深圳市永盛微波技术有限公司 | A kind of power splitter |
| CN107464976A (en) * | 2017-08-22 | 2017-12-12 | 南京理工大学 | A kind of follow-on power splitters of L-waveband miniature LTCC six |
| CN212695293U (en) * | 2020-08-28 | 2021-03-12 | 中国电子科技集团公司第四十三研究所 | L-band miniature ceramic power divider with symmetrical structure |
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