CN114824723B - Horizontal polarization dual-mode dielectric resonator - Google Patents
Horizontal polarization dual-mode dielectric resonator Download PDFInfo
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- 239000010410 layer Substances 0.000 claims abstract description 74
- 239000002184 metal Substances 0.000 claims abstract description 51
- 239000000758 substrate Substances 0.000 claims abstract description 39
- 239000011229 interlayer Substances 0.000 claims abstract description 8
- 230000009977 dual effect Effects 0.000 claims description 28
- 230000005684 electric field Effects 0.000 abstract description 15
- 238000010586 diagram Methods 0.000 description 5
- 230000010354 integration Effects 0.000 description 5
- 238000004891 communication Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 2
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- 238000000034 method Methods 0.000 description 2
- 238000010295 mobile communication Methods 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P7/00—Resonators of the waveguide type
- H01P7/10—Dielectric resonators
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Abstract
The invention discloses a horizontally polarized dual-mode dielectric resonator, which comprises a metal top layer, a high dielectric constant substrate layer, a low dielectric constant substrate layer and a metal bottom layer which are sequentially distributed from top to bottom, wherein the metal top layer, the high dielectric constant substrate layer, the low dielectric constant substrate layer and the metal bottom layer are connected through a plurality of metallized through holes; an air hole belt formed by a plurality of air holes is arranged on the high dielectric constant substrate layer, and a rectangular dielectric block is formed in a region surrounded by the air hole belt; an interlayer metal structure is arranged between the high dielectric constant substrate layer and the low dielectric constant substrate layer. The invention applies the intermediate layer metal structure to the high-low dielectric constant substrate loaded with the air hole belt and the metallized through hole wall, so that TE 111 Mode and TM 121 Mode can be modified into quasi-TE with equidirectional horizontal electric field 111 The mode and the mixed mode have the characteristics of adjacent resonant frequencies, same horizontal polarization and no need of suppressing an intermediate mode.
Description
Technical Field
The invention relates to the technical field of wireless communication, in particular to a horizontally polarized dual-mode dielectric resonator.
Background
In recent years, the demand for high-rate development of wireless communication has driven the development of fifth-generation mobile communication technology, and the reduction of power consumption is one of the key problems that the fifth-generation mobile communication needs to solve. The dielectric resonator is mainly made of dielectric materials, and has small conductor loss when working in a higher microwave frequency band or millimeter wave frequency band, so that the dielectric resonator has lower loss compared with a metal resonator, and is beneficial to improving the efficiency and reducing the loss of a fifth-generation communication system. The dielectric resonator with dual mode operation can generate two available operation modes by a single resonator, can expand the operation bandwidth and increase the order when the device or the system is applied, and is beneficial to miniaturization, wide bandwidth, multiple frequency bands and high speed of a wireless communication system. The dual-mode dielectric resonator has important research value and engineering application value due to the combination of the two reasons.
At present, most of dual-mode dielectric resonators are realized by a ceramic structure with high dielectric constant, and dual modes are introduced to work mainly through three-dimensional size regulation and control, groove processing, stepped structure, irregular structure and the like of the ceramic dielectric resonators, and generally, the modes of the dual modes are as follows: orthogonal mode, combination of fundamental mode and higher order mode, combination of modes respectively determined by horizontal dimension and vertical dimension, combination of dielectric mode and cavity mode, etc. The resonator has the problems of high profile, complex structure, difficult integration with a PCB, difficult assembly and the like in structure; the mode has the problems of limited use form or scene, difficult realization of millimeter wave frequency band, mode which needs to be restrained in the middle of the dual mode, differential polarization direction of the electric field of the dual mode and the like. The dielectric resonator constructed by the printed circuit board solves the problem of integration, but the dual-mode characteristic of the resonator is mainly realized by the modes of orthogonal mode, combination of a fundamental mode and a higher order mode, and the like, so the problems that a field Jing Shouxian is used, a mode which needs to be restrained exists between the dual modes, horizontal polarization cannot be realized by the dual modes at the same time, and the like still exist.
For the problems in the related art, no effective solution has been proposed at present.
Disclosure of Invention
Aiming at the problems in the related art, the invention provides a horizontal polarization dual-mode dielectric resonator which can solve the problems that the dual-mode dielectric resonator has a high section, a complex structure, difficult integration with a PCB or difficult assembly and the like on the part of the structure, has a mode with limited use form and must be restrained in the middle of the dual mode, has different polarization directions of electric fields of the dual mode or cannot be used for dual mode and has a horizontal polarization electric field.
The technical scheme of the invention is realized as follows:
a horizontal polarization dual-mode dielectric resonator comprises a metal top layer, a high dielectric constant substrate layer, a low dielectric constant substrate layer and a metal bottom layer which are sequentially distributed from top to bottom, wherein the metal top layer, the high dielectric constant substrate layer, the low dielectric constant substrate layer and the metal bottom layer are connected through a plurality of metallized through holes; an air hole belt formed by a plurality of air holes is arranged on the high dielectric constant substrate layer, and a rectangular dielectric block is formed in a region surrounded by the air hole belt; an intermediate layer metal structure is arranged between the high dielectric constant substrate layer and the low dielectric constant substrate layer.
The metal top layer is of an annular hollow structure, the annular hollow structure is located at the edge of the upper surface of the high dielectric constant substrate layer, and the air hole belt is located at the hollow of the annular hollow structure.
Wherein the metallized via is disposed around an inside edge of the annular hollow structure.
Wherein the air holes are arranged in a central symmetry manner.
Optionally, the left-right width of the air hole belt is 0.1λ 0 ～0.13λ 0 The width of the air hole belt is 0.15 lambda 0 ～0.18λ 0 。
Optionally, the length of the rectangular dielectric block is 0.38λ 0 ～0.43λ 0 The width of the rectangular dielectric block is 0.1λ 0 ～0.15λ 0 。
Wherein the interlayer metal structure is an interlayer metal strip, and the interlayer metal strip is positioned at the center of the resonator.
Optionally, the length of the middle layer metal strip is 0.12λ 0 ～0.15λ 0 And the interlayer metal strip is positioned on the upper surface of the low dielectric constant substrate layer.
The horizontal polarization dual-mode dielectric resonator is integrally of a central symmetry structure.
The beneficial effects are that: compared with the existing dual-mode dielectric resonator, the invention applies the intermediate layer metal structure to the high-low dielectric constant substrate loaded with the air hole belt and the metallized via wall, so that TE 111 Mode and TM 121 Mode can be modified into quasi-TE with equidirectional horizontal electric field 111 The mode and the mixed mode have the characteristics of adjacent resonant frequencies, same horizontal polarization and no need of suppressing an intermediate mode, can be structurally realized integrally through a PCB process, have extremely high integration characteristic, do not need to be assembled, avoid assembly errors and are convenient for engineering realization.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic side view of a horizontally polarized dual mode dielectric resonator according to an embodiment of the present invention;
FIG. 2 is a schematic top structure of a horizontally polarized dual mode dielectric resonator according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of an intermediate layer structure of a horizontally polarized dual mode dielectric resonator according to an embodiment of the present invention;
FIG. 4 is a TE view of a horizontally polarized dual mode dielectric resonator without an added interlayer metal structure according to an embodiment of the present invention 111 A schematic diagram of the electric field distribution in a mode vertical plane;
FIG. 5 is a schematic illustration of a TM horizontally polarized dual mode dielectric resonator without an intervening metal structure in accordance with an embodiment of the invention 121 A schematic diagram of the electric field distribution in a mode vertical plane;
FIG. 6 is a quasi-TE of a horizontally polarized dual mode dielectric resonator according to an embodiment of the present invention 111 ModeA vertical plane electric field distribution diagram;
fig. 7 is a schematic diagram of a mixed mode vertical plane electric field distribution of a horizontally polarized dual mode dielectric resonator according to an embodiment of the present invention.
In the figure:
1. a metal top layer; 2. a high dielectric constant substrate layer; 3. a low dielectric constant substrate layer; 4. a metal underlayer; 5. metallizing the via hole; 6. an air hole; 7. rectangular dielectric blocks; 8. an intermediate layer metal structure.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which are derived by a person skilled in the art based on the embodiments of the invention, fall within the scope of protection of the invention.
According to an embodiment of the present invention, there is provided a horizontally polarized dual mode dielectric resonator.
As shown in fig. 1-3, a horizontally polarized dual-mode dielectric resonator according to an embodiment of the present invention includes a metal top layer 1, a high dielectric constant substrate layer 2, a low dielectric constant substrate layer 3, and a metal bottom layer 4 sequentially distributed from top to bottom, where the metal top layer 1, the high dielectric constant substrate layer 2, the low dielectric constant substrate layer 3, and the metal bottom layer 4 are connected through a plurality of metallized vias 5; the metal top layer 1 is of an annular hollow structure, the annular hollow structure is positioned at the edge of the upper surface of the high dielectric constant substrate layer 2, the metallized via holes 5 are arranged around the edge of the inner side of the annular hollow structure, the high dielectric constant substrate layer 2 is provided with air hole belts formed by a plurality of air holes 6 which are arranged in a central symmetry manner, the air hole belts are positioned at the hollow part of the annular hollow structure, and a rectangular dielectric block 7 is formed in the area surrounded by the air hole belts; an intermediate layer metal structure 8 is arranged between the high-dielectric constant substrate layer 2 and the low-dielectric constant substrate layer 3, the intermediate layer metal structure 8 is an intermediate layer metal strip, and the intermediate layer metal strip is positioned at the center of the resonator and is positioned on the upper surface of the low-dielectric constant substrate layer.
In specific application, the horizontal polarization dual-mode dielectric resonator is integrally of a central symmetrical structure, wherein the left-right width of the air hole belt is 0.1λ 0 ～0.13λ 0 The width of the air hole belt is 0.15 lambda 0 ～0.18λ 0 . The length of the rectangular dielectric block 7 is 0.38λ 0 ～0.43λ 0 The width of the rectangular dielectric block 7 is 0.1λ 0 ～0.15λ 0 . The length of the middle layer metal strip is 0.12lambda 0 ～0.15λ 0 And the length of the middle layer metal strip can control the working frequency of the horizontal polarization dual mode of the resonator; wherein lambda is 0 Is the free space wavelength corresponding to the center frequency.
For the proposed horizontally polarized dual mode dielectric resonator, as shown in fig. 4-5, the rectangular dielectric block 7 contributes to the first resonant mode TE when the intermediate layer metal strip is not added 111 Mode, and the air hole strips on the left and right sides and the metallized via holes 5 act on the rectangular dielectric block 7 to form a second resonant mode TM 121 A mode. At this time, the TM of the resonator 121 The electric field presented by the mode is mainly in the vertical direction, and the horizontal electric field component has certain direction distribution, so that the dual mode with horizontal polarization is not provided. After the middle layer metal strip is added, the metal strip produces disturbance to the internal field of the dielectric resonator, the horizontal electric field component of the metal strip actuation resists the reverse horizontal component in the middle of the original second mode, so that the electric field horizontal component at the left, middle and right positions is in the same direction, the second mode of horizontal polarization is obtained, and the mode is combined. The electric field distribution of the first mode is slightly changed only in the middle part after the metal strip is added, and the main body and TE 111 Mode is similar to form quasi TE 111 The modes are also horizontal polarization modes. Thus, the bulk resonator eventually achieves a dual mode, quasi-TE, with horizontally polarized characteristics 111 The mold and hybrid mold, as shown in fig. 6-7, and the two modes are adjacent modes with no other mode in between, there is no need to additionally suppress intermediate modes in engineering applications.
In summary, by means of the above technical solution of the present invention, TE is achieved by applying an interlayer metal structure to a high-low dielectric constant substrate loaded with air hole strips and metallized via walls 111 Mode and TM 121 Mode can be modified into quasi-TE with equidirectional horizontal electric field 111 The mode and the mixed mode have the characteristics of adjacent resonant frequencies, same horizontal polarization and no need of suppressing an intermediate mode, can be structurally realized integrally through a PCB process, have extremely high integration characteristic, do not need to be assembled, avoid assembly errors and are convenient for engineering realization.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (6)
1. The horizontal polarization dual-mode dielectric resonator is characterized by comprising a metal top layer (1), a high dielectric constant substrate layer (2), a low dielectric constant substrate layer (3) and a metal bottom layer (4) which are sequentially distributed from top to bottom, wherein the metal top layer (1), the high dielectric constant substrate layer (2), the low dielectric constant substrate layer (3) and the metal bottom layer (4) are connected through a plurality of metallized through holes (5); an air hole belt formed by a plurality of air holes (6) is arranged on the high dielectric constant substrate layer (2), and a rectangular dielectric block (7) is formed in a region surrounded by the air hole belt; an intermediate layer metal structure (8) is arranged between the high dielectric constant substrate layer (2) and the low dielectric constant substrate layer (3); the metal top layer (1) is of an annular hollow structure, and the annular hollow structure is positioned at the edge of the upper surface of the high dielectric constant substrate layer (2); the air hole belt is positioned in the hollow part of the annular hollow structure; the metallized via hole (5) is arranged at the inner side edge of the annular hollow structure in a surrounding manner; the air holes (6) are arranged in a central symmetry manner.
2. A horizontally polarized dual mode dielectric resonator according to claim 1 wherein the dielectric resonator comprisesThe width of the air hole belt is 0.1λ 0 ～0.13λ 0 The width of the air hole belt is 0.15 lambda 0 ～0.18λ 0 ；λ 0 Is the free space wavelength corresponding to the center frequency.
3. A horizontally polarized dual mode dielectric resonator according to claim 1, characterized in that the rectangular dielectric block (7) has a length of 0.38λ 0 ～0.43λ 0 The width of the rectangular dielectric block (7) is 0.1lambda 0 ～0.15λ 0 ；λ 0 Is the free space wavelength corresponding to the center frequency.
4. A horizontally polarized dual mode dielectric resonator according to claim 1, characterized in that the intermediate layer metal structure (8) is an intermediate layer metal strip, which is located at the centre of the resonator.
5. The horizontally polarized dual mode dielectric resonator of claim 4 wherein the length of the middle layer metal strip is 0.12λ 0 ～0.15λ 0 The interlayer metal strip is positioned on the upper surface of the low dielectric constant substrate layer; lambda (lambda) 0 Is the free space wavelength corresponding to the center frequency.
6. The horizontally polarized dual mode dielectric resonator of claim 1, wherein the horizontally polarized dual mode dielectric resonator is generally centrally symmetric.
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| CN202210511811.2A CN114824723B (en) | 2022-05-11 | 2022-05-11 | Horizontal polarization dual-mode dielectric resonator |
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| CN116014432B (en) * | 2023-03-27 | 2023-06-27 | 南通至晟微电子技术有限公司 | Substrate integrated dielectric resonator filtering antenna array |
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| EP0064799A1 (en) * | 1981-05-11 | 1982-11-17 | FORD AEROSPACE & COMMUNICATIONS CORPORATION | Miniature dual-mode, dielectric-loaded cavity filter |
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| JP2007129511A (en) * | 2005-11-04 | 2007-05-24 | Sony Corp | Sound output apparatus and method, program, and recording medium |
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| EP0064799A1 (en) * | 1981-05-11 | 1982-11-17 | FORD AEROSPACE & COMMUNICATIONS CORPORATION | Miniature dual-mode, dielectric-loaded cavity filter |
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