CN114069182B - Multilayer dielectric integrated slot waveguide transmission line - Google Patents
Multilayer dielectric integrated slot waveguide transmission line Download PDFInfo
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- CN114069182B CN114069182B CN202111518869.1A CN202111518869A CN114069182B CN 114069182 B CN114069182 B CN 114069182B CN 202111518869 A CN202111518869 A CN 202111518869A CN 114069182 B CN114069182 B CN 114069182B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P3/00—Waveguides; Transmission lines of the waveguide type
- H01P3/18—Waveguides; Transmission lines of the waveguide type built-up from several layers to increase operating surface, i.e. alternately conductive and dielectric layers
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- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P3/00—Waveguides; Transmission lines of the waveguide type
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Abstract
The invention discloses a multilayer dielectric integrated slot waveguide transmission line, which mainly solves the problems of complex processing, small power capacity, narrow working bandwidth, limited applicable frequency band and single mode transmission of the existing transmission line. The transmission line comprises six layers of dielectric plates, wherein the second dielectric plate is a core circuit layer; the third dielectric plate and the fourth dielectric plate are both provided with groove areas for concentrating electromagnetic field energy, the fifth dielectric plate is provided with a rectangular area for inhibiting energy attenuation, the groove areas and the rectangular area are vertically arranged, and the three dielectric plates form a cavity layer and are positioned on the second dielectric plate; the first dielectric plate and the sixth dielectric plate are additional layers and are respectively positioned below the second dielectric plate and above the fifth dielectric plate to play a role in sealing and protecting the circuit. By adopting the structure of mixing the main body circuit and the slot waveguide, the invention not only increases the transmission rate of electromagnetic waves, but also has multimode transmission, small loss, wide bandwidth and good high-low frequency transmission characteristics, and can be used for the design of microwave and millimeter wave distributed circuits.
Description
Technical Field
The invention belongs to the technical field of microwaves, and particularly relates to a slot waveguide transmission line which can be used for microwave and millimeter wave distributed circuit design.
Background
With the rapid development of wireless communication technology, microwaves and millimeter waves gradually enter the visual field of people and play an important role in the field of communication. In the design of microwave and millimeter wave circuits, the traditional transmission line for designing the circuit is often single in structure and too large in loss, so that the circuit design is inevitably limited.
In the microwave frequency range, conventional transmission lines have microstrip lines, coaxial lines, striplines, slotlines, coplanar waveguides and waveguides, wherein:
microstrip lines, which are the most common transmission lines, are usually in the form of strip conductors located above a dielectric slab, and metal is attached below the dielectric slab, so that in order to solve the problem of grounding, holes need to be punched, and the loss is unnecessarily increased;
the coaxial line consists of two coaxial cylindrical conductors, can transmit TE waves, TM waves and TEM waves, but can generate serious dielectric loss along with the increase of frequency of the coaxial cylindrical conductors, so that the transmission efficiency is reduced;
the strip line consists of two grounding plates and a conduction band, the conduction band is positioned in the middle of the common surface between the upper plate and the lower plate, and can be considered as being evolved from a coaxial line, so that the problems of overlarge loss and small transmission power exist in a microwave high frequency band and a millimeter wave frequency band;
a slot line, which is a double strip line, i.e., a dielectric upper layer is attached with metal, a slot is arranged in the middle of the metal, and the slot line is mainly used for transmitting a quasi-TE mode, but as a transmission line, a substrate with high dielectric constant is required to be adopted to improve the transmission efficiency, thereby generating transmission limitation;
the conduction band and the ground plane of the coplanar waveguide are positioned on the same plane, and although the problem of forming through holes on the microstrip line is solved, the advantages of the outer surface lead of the coplanar waveguide are not obvious due to large radiation loss at the low end of microwave frequency and the millimeter wave frequency band;
the waveguide comprises a rectangular waveguide and a circular waveguide, the outer wall of the waveguide is wrapped by metal to form a closed space, the cross section of the waveguide is rectangular or circular, electromagnetic waves are transmitted in the middle of the waveguide, but in a microwave high frequency band and a millimeter wave frequency band, the traditional waveguide has the defects of low power capacity and large loss;
in summary, the conventional transmission lines have limitations in use, and when the loss of the conventional transmission lines increases rapidly with the increase of frequency when entering the millimeter wave frequency band, the conventional transmission lines have difficulty in transmitting high-power electromagnetic waves.
The slot waveguide was proposed by f.j. tischer in the last 60 th century and is a transmission line suitable for the millimeter wave band. Since the wireless communication field has not entered the millimeter wave era at that time, further research on the structure has not been conducted. Nowadays, as wireless communication develops into a millimeter wave frequency band, a slot waveguide gradually enters the field of vision of people. The conventional slot waveguide is composed of a slab region and a slot region, i.e., a waveguide structure in which longitudinal convex slots are provided on upper and lower surfaces of parallel plates. The structure enables electromagnetic field energy to be concentrated towards the central groove area, electromagnetic energy in the parallel plate area is gradually attenuated towards two sides, and the parallel plate area always works in a frequency band above 100 GHz. The traditional slot waveguide has poor transmission efficiency in a low frequency band, and has better performance only under the condition of single-mode transmission when working in a frequency band above 100 GHz. In order to ensure good single-mode transmission performance in the high-frequency band, the parallel plate region needs to be lengthened, so that the size of the waveguide is increased. In recent years, structural improvements have been proposed based on conventional slot waveguides.
The corrugated circular groove waveguide transmission line proposed in the text of "conductor loss characteristic of corrugated circular groove waveguide" published by the report of microwave science of royal and royal shenghong in 2007 is composed of an upper flat plate region, a lower flat plate region and a quasi-cylindrical region as shown in fig. 1, and the structure achieves the purpose of reducing the conductor loss of the waveguide by periodically loading circular-arc corrugated grooves on the inner wall of the circular groove waveguide in the propagation direction of the circular groove waveguide, and simultaneously obtains larger power capacity on the premise of ensuring the loss by designing a proper ratio of the inner diameter and the outer diameter of the corrugated grooves. However, the corrugated circular groove waveguide transmission line needs to etch the circular-arc corrugated groove, so that the processing difficulty is increased, and the transmission mode is single, the bandwidth is narrow, and the low-frequency transmission characteristic is not realized.
The 'research on E-band folded rectangular-slot waveguide traveling-wave tubes' published in the journal of the radio science by zai weikang, wang tight plum, and the like in 2017 proposes a folded rectangular-slot waveguide structure, as shown in fig. 2, which is formed by combining a rectangular waveguide and a slot waveguide and bending a slot region back and forth along an E-plane, and the structure improves the defect that a conventional slow-wave structure is difficult to combine a wide bandwidth and high power capacity at a high frequency band, but adopts a back and forth bending structure, is complex to process, and the transmission line does not have low-frequency transmission characteristics.
In 2017, when designing a filter power divider in a academic thesis of "filter power divider based on a dielectric integrated suspension line", a dielectric integrated suspension line structure proposed in 2007 by makagian science is adopted, as shown in fig. 3, which is composed of five layers of dielectric plates, from top to bottom, a dielectric plate 1, a dielectric plate 2, a dielectric plate 3, a dielectric plate 4 and a dielectric plate 5 are sequentially included: the dielectric substrate comprises an additional layer, a cavity layer and a core circuit layer, wherein the additional layer comprises a dielectric plate 1 and a dielectric plate 5, the cavity layer comprises a dielectric plate 2 and a dielectric plate 4, and the core circuit layer is a dielectric plate 3. This structure exhibits excellent characteristics in a low frequency band, but has a disadvantage of large loss and narrow bandwidth when the frequency is increased to a high frequency band.
Disclosure of Invention
The invention aims to provide a multilayer dielectric integrated slot waveguide transmission line aiming at the defects of the prior art, so as to reduce the processing difficulty, increase the transmission mode, improve the high-frequency transmission characteristic while ensuring the low-frequency transmission characteristic and expand the bandwidth.
In order to realize the purpose, the technical scheme of the invention is as follows:
the technical scheme 1:
the utility model provides a multilayer medium integrated channel waveguide transmission line for low-frequency channel, include the additional layer of constituteing by multilayer dielectric plate, the cavity layer, the core circuit layer, the cavity level is located the top on core circuit layer, the additional layer is located the below on core circuit layer and the top on cavity layer, this additional layer includes first layer dielectric plate 1 and sixth layer dielectric plate 6, this core circuit layer adopts second floor dielectric plate 2, be equipped with the main part circuit of constituteing including the conduction band and ground on it, its characterized in that:
the cavity layer at least comprises three dielectric plates, namely a third dielectric plate 3, a fourth dielectric plate 4 and a fifth dielectric plate 5, and a lower groove area 31 and an upper groove area 41 are respectively arranged on the third dielectric plate 3 and the fourth dielectric plate 4 and are used for concentrating electromagnetic field energy and reducing loss; the fifth dielectric plate 5 is provided with a rectangular region 51 for inhibiting energy attenuation and serving as an expansion region of a main circuit;
the first dielectric plate 1, the second dielectric plate 2 and the third dielectric plate 3 are longitudinally arranged from bottom to top, the fourth dielectric plate 4, the fifth dielectric plate 5 and the sixth dielectric plate 6 are transversely arranged from bottom to top to obtain excellent low-frequency transmission characteristics, and each dielectric plate is provided with two rows of metal through holes a parallel to a conduction band on the second dielectric plate for inhibiting 0-14GHz low-frequency harmonic waves.
Further, the length of the lower groove area 31 is 15.5mm-16.5mm, the width is 7.5mm-8.5mm, and the height is 3.15mm-3.20 mm.
Further, the length and width of the upper groove area 41 are consistent with those of the lower groove area, and the height is 0.785mm-0.790 mm;
further, the rectangular area 51 has a length of 67mm to 72mm, a width of 14mm to 17mm, and a height of 3.15mm to 3.20 mm.
Furthermore, the diameter of the metal through hole on each layer of dielectric plate is 0.45mm-0.55mm, and the center distance of the metal through hole is 1.8mm-2.0 mm.
The technical scheme 2 is as follows:
the utility model provides a multilayer medium integrated channel waveguide transmission line for high-frequency channel, include the additional layer of constituteing by multilayer dielectric plate, the cavity layer, the core circuit layer, the cavity level is located the top on core circuit layer, the additional layer is located the below on core circuit layer and the top on cavity layer, this additional layer includes first layer dielectric plate 1 and sixth layer dielectric plate 6, this core circuit layer adopts second floor dielectric plate 2, be equipped with the main part circuit of constituteing including the conduction band and ground on it, its characterized in that:
the cavity layer at least comprises three dielectric plates, namely a third dielectric plate 3, a fourth dielectric plate 4 and a fifth dielectric plate 5, and a lower groove area 31 and an upper groove area 41 are respectively arranged on the third dielectric plate 3 and the fourth dielectric plate 4 and are used for concentrating electromagnetic field energy and reducing loss; the fifth dielectric plate 5 is provided with a rectangular region 51 for inhibiting energy attenuation and serving as an expansion region of a main circuit;
the first dielectric plate 1, the second dielectric plate 2 and the third dielectric plate 3 are longitudinally arranged from bottom to top, the fourth dielectric plate 4, the fifth dielectric plate 5 and the sixth dielectric plate 6 are transversely arranged from bottom to top to obtain excellent high-frequency transmission characteristics, and two rows of metal through holes parallel to the conduction band are formed in the position, close to the conduction band region, of the second dielectric plate 2 and used for inhibiting high-frequency harmonic waves of 90-180 GHz.
Further, the length of the lower groove area 31 is 1.56mm-1.58mm, the width is 1.56mm-1.58mm, and the height is 0.505mm-0.510 mm;
further, the upper groove area 41 has a length and a width corresponding to those of the lower groove area, and a height of 0.123mm to 0.130 mm.
Further, the rectangular area 51 has a length of 9.5mm to 10.5mm, a width of 2.55mm to 2.65mm, and a height of 0.505mm to 0.510 mm.
Furthermore, the diameter of the metal through hole b on the dielectric plate 2 is 0.08mm-0.12mm, and the center distance is 0.28mm-0.32 mm.
Compared with the prior art, the invention has the following advantages:
1) according to the invention, as the groove regions are formed on the third dielectric plate and the fourth dielectric plate, the electromagnetic field energy can be concentrated, and the loss is reduced.
2) According to the invention, the rectangular region is formed on the fifth dielectric plate, so that energy attenuation can be inhibited, the fifth dielectric plate can be used as an expanded region of a main circuit, the integration level of the main circuit is improved, and the circuit size is further reduced.
3) According to the invention, by adopting a structure of mixing the main circuit and the slot waveguide and vertically arranging the slot region and the rectangular region, the transmission rate of electromagnetic waves is increased, and the invention has the advantages of multimode transmission, small loss, wide bandwidth and capability of high-frequency and low-frequency transmission.
Drawings
FIG. 1 is a schematic diagram of a prior art corrugated circular slot waveguide structure;
FIG. 2 is a schematic view of a prior art folded rectangular slot waveguide;
FIG. 3 is a three-dimensional structure diagram of a conventional integrated dielectric suspension line;
FIG. 4 is a three-dimensional block diagram of the low band of the present invention;
FIG. 5 is a three-dimensional block diagram of the high band of the present invention;
FIG. 6 is a cross-sectional view of FIG. 4;
FIG. 7 is a cross-sectional view of FIG. 5;
FIG. 8 is a core layer structure of a low frequency band in the present invention;
FIG. 9 is a core layer structure of a high frequency band in the present invention;
FIG. 10 is a simulation plot of S-parameters for the low frequency band of the present invention;
fig. 11 is a simulation graph of S-parameters for the high frequency band of the present invention.
Detailed Description
The embodiments and effects of the present invention will be described in further detail below with reference to the accompanying drawings:
Referring to fig. 4, 6 and 8, the present example includes an additional layer composed of six dielectric sheets, a cavity layer and a core circuit layer, wherein the second dielectric sheet 2 serves as the core circuit layer; the third dielectric plate 3, the fourth dielectric plate 4 and the fifth dielectric plate 5 form a cavity layer which is positioned at the upper part of the second dielectric plate 2; the first layer dielectric plate 1 and the sixth layer dielectric plate 6 form additional layers which are respectively positioned at the lower part of the second layer dielectric plate 2 and the upper part of the fifth layer dielectric plate 5 to form a seal for the whole circuit and play a role in protecting the main circuit. The materials and parameters of the six-layer dielectric plate are as follows:
the first layer of dielectric slab 1 is made of FR4, the length of which may be selected from a range of 32.8mm to 33.2mm, the width of which may be selected from a range of 11.8mm to 12.2mm, and the height of which may be selected from a range of 0.9mm to 1.1mm, and the embodiment is selected but not limited to the length of 33mm, the width of 12mm, and the height of h1 of 1 mm;
the second layer of dielectric plate 2 is made of Rogers 5880, the length of the second layer of dielectric plate can be selected from the range of 32.8mm to 33.2mm, the width of the second layer of dielectric plate can be selected from the range of 11.8mm to 12.2mm, the height of the second layer of dielectric plate can be selected from the range of 0.785mm to 0.790mm, and the second layer of dielectric plate is selected from the range of, but not limited to, 33mm in length, 12mm in width, and 0.787mm in height h 2;
the third dielectric slab 3 is made of Rogers 5880, the length of the third dielectric slab can be selected from a range of 32.8mm-33.2mm, the width of the third dielectric slab can be selected from a range of 11.8mm-12.2mm, and the height of the third dielectric slab can be selected from a range of 3.15mm-3.20mm, but the third dielectric slab is selected from a range of 33mm in length, 12mm in width and 3.17mm in height h 3;
the fourth layer of dielectric slab 4 is made of Rogers 5880, the length of which may be in the range of 79mm to 81mm, the width of which may be in the range of 24.5mm to 25.5mm, and the height of which may be in the range of 0.785mm to 0.790mm, and this embodiment is selected but not limited to 80mm in length, 25mm in width, and 0.787mm in height h 4;
the fifth layer medium plate 5 is made of Rogers 5880, the length of the fifth layer medium plate can be selected from the range of 79mm-81mm, the width of the fifth layer medium plate can be selected from the range of 24.5mm-25.5mm, the height of the fifth layer medium plate can be selected from the range of 3.15mm-3.20mm, the fifth layer medium plate is selected from the range of 80mm, 25mm in width and 3.17mm in height h 5;
the sixth dielectric slab 6 is made of FR4, and has a length selected from the range of 79mm to 81mm, a width selected from the range of 24.5mm to 25.5mm, and a height selected from the range of 0.9mm to 1.1mm, and in this embodiment, but not limited to, a length of 80mm, a width of 25mm, and a height of h6 equal to 1 mm.
The middle of the third dielectric slab 3 is provided with a lower groove area 31, the length of the lower groove area is 15.5mm-16.5mm, the width of the lower groove area is 7.5mm-8.5mm, the height of the lower groove area is 3.15mm-3.20mm, the length of the third dielectric slab is 16mm, the width of the third dielectric slab is 8mm, and the height of the third dielectric slab is h 3;
the middle of the fourth layer of dielectric slab 4 is provided with an upper groove area 41, the length of the upper groove area is in a selectable range of 15.5mm-16.5mm, the width of the upper groove area is in a selectable range of 7.5mm-8.5mm, the height of the upper groove area is in a selectable range of 3.15mm-3.20mm, the upper groove area and the lower groove area are selected but not limited to be 16mm, 8mm and h4, and the two upper groove areas and the two lower groove areas are used for concentrating electromagnetic field energy and reducing loss;
the middle of the fifth dielectric slab 5 is provided with a rectangular area 51, the length of which can be selected from a range of 67mm-72mm, the width of which can be selected from a range of 14mm-17mm, and the height of which can be selected from a range of 3.15mm-3.20mm, in the embodiment, the rectangular area is selected but not limited to the area with the length of 70mm, the width of 16mm, and the height of h5, is used for inhibiting energy attenuation, and is used as an expansion area of a main circuit.
The second dielectric plate 2 is provided with a main circuit composed of a conduction band 21 and a ground 22, and the main circuit can adopt a grounded coplanar waveguide or a microstrip or a coplanar waveguide, and the example adopts but is not limited to a grounded coplanar waveguide.
The first layer of dielectric plate 1, the second layer of dielectric plate 2 and the third layer of dielectric plate 3 are longitudinally arranged, the fourth layer of dielectric plate 4, the fifth layer of dielectric plate 5 and the sixth layer of dielectric plate 6 are transversely arranged to form an integral structure of the first layer of dielectric plate 1, the second layer of dielectric plate 2, the third layer of dielectric plate 3, the fourth layer of dielectric plate 4, the fifth layer of dielectric plate 5 and the sixth layer of dielectric plate 6 from bottom to top, each layer of dielectric plate is provided with two rows of metal through holes a parallel to a conduction band on the second layer of dielectric plate, the diameter of each through hole can be selected from 0.45mm to 0.55mm, the center distance can be selected from 1.8mm to 2.0mm, the diameter of the embodiment is selected but not limited to 0.5mm, and the center distance is 1.9mm, and the low-frequency harmonic wave of 0-14GHz can be inhibited, and excellent low-frequency transmission characteristic can be obtained.
Referring to fig. 5, 7 and 9, the present example includes an additional layer composed of six dielectric sheets, a cavity layer and a core circuit layer, wherein the second dielectric sheet 2 serves as the core circuit layer; the third dielectric plate 3, the fourth dielectric plate 4 and the fifth dielectric plate 5 form a cavity layer which is positioned at the upper part of the second dielectric plate 2; the first layer of dielectric plate 1 and the sixth layer of dielectric plate 6 form an additional layer, the first layer of dielectric plate 1 is positioned at the lower part of the second layer of dielectric plate 2, and the sixth layer of dielectric plate 6 is positioned at the upper part of the fifth layer of dielectric plate 5, so that the whole circuit is sealed, and the main circuit is protected. The materials of the six dielectric sheets are the same as those of example 1, and the parameters are as follows:
the length of the first layer of dielectric slab 1 can be selected from the range of 5.15mm to 5.25mm, the width can be selected from the range of 2.06mm to 2.08mm, and the height can be selected from the range of 0.195mm to 0.295mm, but the embodiment is not limited to the length of 5.2mm, the width of 2.07mm, and the height of H1 being 0.2 mm;
the length of the second layer of dielectric plate 2 can be selected from the range of 5.15mm-5.25mm, the width can be selected from the range of 2.06mm-2.08mm, and the height can be selected from the range of 0.123mm-0.130mm, but the embodiment is not limited to the length of 5.2mm, the width of 2.07mm, and the height of H2-0.127 mm;
the length of the third dielectric slab 3 is selected from 5.15mm to 5.25mm, the width is selected from 2.06mm to 2.08mm, and the height is selected from 0.505mm to 0.510mm, but the embodiment is not limited to the length being 5.2mm, the width being 2.07mm, and the height being H3 being 0.508 mm;
the length of the fourth dielectric slab 4 can be selected from a range of 11.24mm to 11.27mm, the width can be selected from a range of 3.98mm to 4.02mm, and the height can be selected from a range of 0.123mm to 0.130mm, but the embodiment is not limited to the length of 11.25mm, the width of 4mm, and the height of H4 ═ 0.127 mm;
the length of the fifth layer medium plate 5 can be selected from the range of 11.24mm-11.27mm, the width can be selected from the range of 3.98mm-4.02mm, and the height can be selected from the range of 0.505mm-0.510mm, but the embodiment is not limited to the selection of the length of 11.25mm, the width of 4mm, and the height of H5-0.508 mm;
the length of the sixth dielectric slab 6 may be selected from a range of 11.24mm to 11.27mm, the width may be selected from a range of 3.98mm to 4.02mm, and the height may be selected from a range of 0.195mm to 0.295mm, but the present embodiment is not limited to the length of 11.25mm, the width of 4mm, and the height of H6 being 0.2 mm.
The middle of the third dielectric slab 3 is provided with a lower groove region, the length of which can be selected from a range of 2.55mm-2.65mm, the width of which can be selected from a range of 1.56mm-1.58mm, and the height of which can be selected from a range of 0.505mm-0.510mm, the length of which is selected but not limited to 2.6mm, the width of which is 1.57mm, and the height of which is H3, the middle of the fourth dielectric slab 4 is provided with an upper groove region 41, the length of which can be selected from a range of 2.55mm-2.65mm, the width of which can be selected from a range of 1.56mm-1.58mm, and the height of which is selected but not limited to 0.505mm-0.510mm, the length of which is selected but not limited to 2.6mm, the width of which is 1.57mm, and the height of which is H4, and the two upper and lower groove regions are used for concentrating electromagnetic field energy and reducing loss;
the middle of the fifth-layer dielectric slab 5 is provided with a rectangular region 51, the length of the rectangular region is 9.5mm-10.5mm, the width of the rectangular region is 2.55mm-2.65mm, the height of the rectangular region is 0.505mm-0.510mm, the rectangular region is selected from but not limited to the rectangular region with the length of 10mm, the width of 2.6mm and the height of H5, and the rectangular region is used for inhibiting energy attenuation and is used as an expansion region of a main circuit.
The 2 nd dielectric plate is provided with a main circuit composed of a conduction band 21 and a ground 22, and the main circuit can adopt a grounded coplanar waveguide or a microstrip or a coplanar waveguide, and the example adopts but is not limited to a grounded coplanar waveguide.
The first layer dielectric plate 1, the second layer dielectric plate 2 and the third layer dielectric plate 3 are longitudinally arranged, the fourth layer dielectric plate 4, the fifth layer dielectric plate 5 and the sixth layer dielectric plate 6 are transversely arranged to form an integral structure of the first layer dielectric plate 1, the second layer dielectric plate 2, the third layer dielectric plate 3, the fourth layer dielectric plate 4, the fifth layer dielectric plate 5 and the sixth layer dielectric plate 6 from bottom to top, two rows of metal through holes b parallel to a conduction band on the second layer dielectric plate are formed in the second layer dielectric plate 2, the diameter of each through hole can be selected from 0.08mm to 0.12mm, the center distance can be selected from 0.28mm to 0.32mm, the diameter of the embodiment is selected but not limited to 0.1mm, and the center distance is 0.3mm, so that the high-frequency harmonic wave of 90GHz to 180GHz can be inhibited, and excellent high-frequency transmission characteristics can be obtained.
The effect of the invention can be illustrated by the following simulation results:
The simulation result shows that the transmission line designed by the invention has wide bandwidth, small loss and good high-frequency and low-frequency transmission performance.
According to microwave technical knowledge, the size of the six-layer dielectric plate and the size of the main circuit are changed, so that the 14-90GHz optional frequency band between the embodiment 1 and the embodiment 2 is realized, and the working frequency band of the invention is expanded to 0-180 GHz.
While the foregoing description is directed to two specific examples of the present invention and not to any limitations thereof, it will be apparent to those skilled in the art that various changes and modifications in form and detail may be made therein without departing from the principles and structures of the present invention, e.g., based on the teachings of the microwave arts, the transmission line is the basis of a microwave circuit, and the multi-layer dielectric integrated tank waveguide transmission line of the present invention may be directly applied to the design of filters, duplexers, couplers, power splitters, baluns, phase shifters, antennas, and integrated circuits and systems incorporating the same, but such changes and modifications are within the scope of the appended claims.
Claims (9)
1. A multilayer medium integrated channel waveguide transmission line for low frequency band, including the additional layer of constituteing by multilayer dielectric plate, the cavity layer, the core circuit layer, the cavity layer is located the top on core circuit layer, the additional layer is located the below on core circuit layer and the top on cavity layer, this additional layer includes first layer dielectric plate (1) and sixth layer dielectric plate (6), this core circuit layer adopts second floor dielectric plate (2), be equipped with the main part circuit of constituteing including conduction band and ground on it, its characterized in that:
the cavity layer at least comprises three dielectric slabs, namely a third dielectric slab (3), a fourth dielectric slab (4) and a fifth dielectric slab (5), and a lower groove area (31) and an upper groove area (41) are respectively formed in the third dielectric slab (3) and the fourth dielectric slab (4) and are used for concentrating electromagnetic field energy and reducing loss; the fifth dielectric plate (5) is provided with a rectangular area (51) which is used for inhibiting energy attenuation and is used as an expansion area of a main circuit; the lower groove area (31) and the upper groove area (41) are communicated with the rectangular area (51);
the first dielectric plate (1), the second dielectric plate (2) and the third dielectric plate (3) are longitudinally arranged from bottom to top, the fourth dielectric plate (4), the fifth dielectric plate (5) and the sixth dielectric plate (6) are transversely arranged from bottom to top so as to obtain excellent low-frequency transmission characteristics, and each dielectric plate is provided with two rows of metal through holes a parallel to a conduction band on the second dielectric plate and used for inhibiting low-frequency harmonics of 0-14 GHz; the conduction band is arranged at the bottom of the lower groove region (31);
the length of the lower groove area (31) is 15.5mm-16.5mm, the width is 7.5mm-8.5mm, and the height is 3.15mm-3.20 mm;
the length and the width of the upper groove area (41) are consistent with those of the lower groove area, and the height is 0.785mm-0.790 mm;
the rectangular area (51) has the length of 67-72 mm, the width of 14-17 mm and the height of 3.15-3.20 mm.
2. The slot waveguide transmission line of claim 1, wherein: the main circuit adopts a grounding coplanar waveguide or a microstrip line or a coplanar waveguide.
3. The slot waveguide transmission line of claim 1, wherein: the first layer of dielectric plate (1) and the sixth layer of dielectric plate (6) are made of the same material, and the parameters are as follows:
the length of the first dielectric slab (1) is 32.8mm-33.2mm, the width is 11.8mm-12.2mm,
the length of the sixth layer of dielectric plate (6) is 79mm-81mm, and the width is 24.5mm-25.5 mm;
the heights of the two dielectric plates are 0.9mm-1.1 mm.
4. The slot waveguide transmission line of claim 1, wherein:
the length and the width of the second layer of dielectric plate (2) are consistent with those of the first layer of dielectric plate (1); the third layer of dielectric plate (3), the fourth layer of dielectric plate (4) and the fifth layer of dielectric plate (5) are made of the same material, and the parameters are as follows:
the length and the width of the third layer of dielectric plate (3) are consistent with those of the second layer of dielectric plate (2);
the height of the fourth layer of dielectric plate (4) is consistent with that of the second layer of dielectric plate (2), and the length and width of the fourth layer of dielectric plate are consistent with those of the sixth layer of dielectric plate (6);
the height of the fifth dielectric plate (5) is consistent with that of the second layer of dielectric plate (2), and the length and the width of the fifth dielectric plate are consistent with those of the sixth layer of dielectric plate (6).
5. The slot waveguide transmission line of claim 1, wherein: the diameter of the metal through hole a on each layer of dielectric plate is 0.45mm-0.55mm, and the center distance is 1.8mm-2.0 mm.
6. The slot waveguide transmission line of claim 1, wherein: for dielectric plates with different dielectric constant materials or different sizes, the working frequency band of the dielectric plate can be changed in any frequency band which is larger than 0GHz and smaller than or equal to 180 GHz.
7. The utility model provides a multilayer medium integrated channel waveguide transmission line for high-frequency channel, include the additional layer of constituteing by multilayer dielectric plate, the cavity layer, the core circuit layer, the cavity level is located the top on core circuit layer, the additional layer is located the below on core circuit layer and the top on cavity layer, this additional layer includes first layer dielectric plate (1) and sixth layer dielectric plate (6), this core circuit layer adopts second floor dielectric plate (2), be equipped with the main part circuit of constituteing including the conduction band and ground on it, its characterized in that:
the cavity layer at least comprises a third dielectric slab (3), a fourth dielectric slab (4) and a fifth dielectric slab (5), and a lower groove area (31) and an upper groove area (41) are respectively formed in the third dielectric slab (3) and the fourth dielectric slab (4) and are used for concentrating electromagnetic field energy and reducing loss; the fifth dielectric plate (5) is provided with a rectangular region (51) which is used for inhibiting energy attenuation and is used as an expansion region of a main circuit; the length of the lower groove area (31) is 2.55mm-2.65mm, the width is 1.56mm-1.58mm, and the height is 0.505mm-0.510 mm;
the length and the width of the upper groove area (41) are consistent with those of the lower groove area, and the height is 0.123mm-0.130 mm;
the length of the rectangular area (51) is 9.5mm-10.5mm, the width is 2.55mm-2.65mm, and the height is 0.505mm-0.510 mm;
the dielectric plate comprises a first dielectric plate (1), a second dielectric plate (2) and a third dielectric plate (3) which are longitudinally arranged from bottom to top, a fourth dielectric plate (4), a fifth dielectric plate (5) and a sixth dielectric plate (6) which are transversely arranged from bottom to top, and two rows of metal through holes b which are parallel to a conduction band are formed in the second dielectric plate (2) at positions close to the conduction band region and used for inhibiting high-frequency harmonics of 90-180 GHz.
8. The slot waveguide transmission line of claim 7, wherein: the diameter of the metal through hole b on the second layer of dielectric plate (2) is 0.08mm-0.12mm, and the center distance is 0.28mm-0.32 mm.
9. The slot waveguide transmission line of claim 7, wherein: for dielectric plates with different dielectric constant materials or different sizes, the working frequency band of the dielectric plate can be changed in any frequency band which is larger than 0GHz and smaller than or equal to 180 GHz.
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