CN116845553A - Laminated substrate integrated waveguide antenna for 5G dual-band coverage - Google Patents
Laminated substrate integrated waveguide antenna for 5G dual-band coverage Download PDFInfo
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- CN116845553A CN116845553A CN202310949010.9A CN202310949010A CN116845553A CN 116845553 A CN116845553 A CN 116845553A CN 202310949010 A CN202310949010 A CN 202310949010A CN 116845553 A CN116845553 A CN 116845553A
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- integrated waveguide
- substrate integrated
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- substrate
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- 239000000758 substrate Substances 0.000 title claims abstract description 94
- 239000002184 metal Substances 0.000 claims abstract description 50
- 239000000853 adhesive Substances 0.000 claims abstract description 4
- 230000001070 adhesive effect Effects 0.000 claims abstract description 4
- 230000008878 coupling Effects 0.000 claims abstract description 4
- 238000010168 coupling process Methods 0.000 claims abstract description 4
- 238000005859 coupling reaction Methods 0.000 claims abstract description 4
- 239000000523 sample Substances 0.000 claims abstract description 4
- 238000005516 engineering process Methods 0.000 claims description 7
- 230000009977 dual effect Effects 0.000 claims description 5
- 238000013461 design Methods 0.000 abstract description 6
- 230000006978 adaptation Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 239000002344 surface layer Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
- H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/48—Earthing means; Earth screens; Counterpoises
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/10—Resonant antennas
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/20—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements characterised by the operating wavebands
- H01Q5/28—Arrangements for establishing polarisation or beam width over two or more different wavebands
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/30—Arrangements for providing operation on different wavebands
- H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
- H01Q5/314—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors
- H01Q5/321—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors within a radiating element or between connected radiating elements
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The invention discloses a laminated substrate integrated waveguide antenna facing 5G dual-band coverage, which comprises: the substrate integrated waveguide structure comprises a first substrate integrated waveguide structure surface metal structure, a first dielectric substrate, an adhesive plate, a second substrate integrated waveguide structure surface metal structure, a second dielectric substrate, a lowest metal ground and a grounding through hole of the substrate integrated waveguide structure; the coaxial feed structure feeds a second substrate integrated waveguide structure positioned on the coaxial feed structure from the metal ground upwards through a coaxial probe, and the second substrate integrated waveguide structure generates two resonance modes after feeding; the first substrate integrated waveguide structure laminated on the top end of the second substrate integrated waveguide structure generates two additional resonance modes, and the coupling between the two substrate integrated waveguide structures can be tuned by adjusting the size proportion of the first metal structure and the second metal structure, so that the broadband design of the 5G dual-band is realized. The invention is an effective solution for the terminal antenna with the advantage of miniaturization and capable of realizing 5G dual-frequency dual-broadband coverage.
Description
Technical Field
The invention relates to the technical field of microwave communication, in particular to a laminated substrate integrated waveguide antenna for 5G dual-band coverage.
Background
In order to meet the requirements of the characteristics of high speed, low delay, large connection and the like of the 5G network on spectrum resources, the competition of China in the 5G field is further improved, and N78 and N79 frequency bands are determined to be deployed preferentially in the 5G frequency bands. The N78 frequency band is a 5G dominant frequency band of China telecom and China Unicom, and the frequency band range is 3.3GHz-3.8GHz; the N79 frequency band is the dominant 5G frequency band of China mobile, and the frequency band range is 4.4GHz-5GHz.
Currently, terminal antennas facing 5G dual band coverage in the prior art are mainly classified into two types and have limitations: the first is to achieve dual band coverage by exciting two or more modes of operation in a single resonator, but the antenna tends to be oversized due to the higher order modes of the single resonator to be utilized; the second method is to realize dual-band coverage by using multiple resonator structures, but the existing design is still limited to two to three resonators, so that the number of provided modes is still limited (+.3 modes), and wide-band coverage of two frequency bands cannot be realized.
Under the background, in terms of the technical field of terminal antennas, the design of a dual-band and miniaturized antenna covering N78/N79 has important research significance.
Disclosure of Invention
The invention aims to solve the problems that: a laminated substrate integrated waveguide antenna for 5G dual-band coverage is provided, which is used for realizing broadband coverage of two frequency bands.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
the laminated substrate integrated waveguide antenna facing the 5G dual-band coverage comprises a first substrate integrated waveguide structure and a second substrate integrated waveguide structure, wherein the upper surfaces of the first substrate integrated waveguide structure and the second substrate integrated waveguide structure are respectively a first metal structure and a second metal structure which are the same in size;
the first metal structure is positioned at the center of the top of the first dielectric substrate, the second metal structure is positioned at the center of the top of the second dielectric substrate, the first dielectric substrate is laminated at the upper end of the second dielectric substrate through the adhesive plate, and the bottom of the second dielectric substrate is also laminated with a metal ground;
the grounding through hole penetrates through the first metal structure, the first dielectric substrate, the bonding plate, the second metal structure, the second dielectric substrate and extends to the metal ground surface from top to bottom;
and a coaxial feed structure is also arranged in the metal ground, and the coaxial probe feeds the second substrate integrated waveguide structure upwards from the metal ground to the second metal structure.
The grounding through holes are arranged on the inner side edges of two adjacent edges of the first metal structure and the second metal structure in a single row.
Further, the first substrate integrated waveguide structure and the second substrate integrated waveguide structure are rectangular substrate integrated waveguide antennas constructed by utilizing a substrate integrated waveguide technology.
Preferably, the second substrate integrated waveguide structure is used as a main radiator, and two resonance modes are generated after feeding, namely a first frequency band and a second frequency band; the first substrate integrated waveguide structure laminated on the top end of the second substrate integrated waveguide structure is used as a secondary radiator, a new resonance point is excited in each of the first frequency band and the second frequency band, two additional resonance modes are generated, and therefore two resonance points exist in each of the first frequency band and the second frequency band, and double-frequency-band operation is achieved.
Further, the first metal structure and the second metal structure may have an adjustable dimensional ratio for tuning the coupling between the first substrate integrated waveguide structure and the second substrate integrated waveguide structure.
Preferably, the first frequency band is an N78 frequency band, including 3.4GHz-3.6GHz, and the second frequency band is an N79 frequency band, including 4.8GHz-5.0GHz.
Preferably, the overall height of the stacked substrate integrated waveguide antenna is 1.73mm.
Compared with the prior art, the technical scheme provided by the invention has the following technical effects:
1. the rectangular substrate integrated waveguide antenna constructed by the substrate integrated waveguide technology has the advantages of small plane size of the radiating unit, compact structure, small size and low profile.
2. The antenna design of the invention can simultaneously comprise two frequency bands of N78 (3.4 GHz-3.6 GHz) and N79 (4.8 GHz-5.0 GHz), including but not limited to the frequency bands of 3.4GHz-3.6GHz and 4.8GHz-5.0GHz, so that the coverage of two 5G frequency bands is realized.
Drawings
FIG. 1 is a block diagram of a stacked substrate integrated waveguide antenna of the present invention;
fig. 2 shows the |s of the antenna unit of the present invention 11 I and gain simulation results;
FIG. 3 is a simulated pattern at 3.5GHz of an antenna element of the present invention;
fig. 4 is a simulated pattern at 4.9GHz for an antenna element of the present invention;
the attached drawings are identified: 1-first metal structure, 2-first dielectric substrate, 3-bonding plate, 4-second metal structure, 5-second dielectric substrate, 6-metal ground, 7-ground through hole, 8-coaxial feed structure.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the application will be further elaborated with reference to the accompanying drawings.
In the description of the present invention, it should be understood that the terms "left", "right", "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and "first", "second", etc. do not indicate the importance of the components, and thus are not to be construed as limiting the present invention. The specific dimensions adopted in the present embodiment are only for illustrating the technical solution, and do not limit the protection scope of the present invention.
The substrate integrated waveguide (Substrate Integrated Waveguide ) technology is a novel microwave and millimeter wave integrated circuit technology, and can be used for designing various high-performance antennas. Compared with the traditional patch antenna, the substrate integrated waveguide antenna has the advantages of high performance, low cost, strong compactness, strong expansibility and the like.
The invention utilizes the substrate integrated waveguide technology to construct a laminated substrate integrated waveguide antenna facing 5G dual-band coverage, the antenna structure of which is shown in figure 1 and comprises the following components in sequence from top to bottom: the antenna comprises a first substrate integrated waveguide structure (from a radiation antenna) upper surface metal structure 1, a first dielectric substrate 2, an adhesive plate 3, a second substrate integrated waveguide structure (from a main radiation antenna) upper surface metal structure 4, a second dielectric substrate 5, a lowest metal ground 6, a substrate integrated waveguide structure grounding through hole 7 and a coaxial feed structure 8.
In one embodiment of the invention, the radio frequency excitation signal is fed from a coaxial probe at the bottom metal ground 6, feeding a second substrate integrated waveguide structure located thereon, where (the main radiating antenna) in the second substrate integrated waveguide structure, tuned in size and feeding position, generates two modes, respectively, a 3.4GHz resonant mode (TE) at the N78 frequency band 110 Mode) and 4.8GHz resonant mode (TE) of the N79 frequency band 310 Mode).
On the basis, another first substrate integrated waveguide structure which is almost the same as the first substrate integrated waveguide structure is laminated on the top of the metal surface of the upper surface of the second rectangular substrate integrated waveguide antenna, and the laminated structure can excite a new resonance point in the N78 frequency band and the N79 frequency band respectively, and the new resonance points are respectively: 3.5 of N78 band8GHz resonance mode (TE 110 Mode), and 4.98GHz resonance mode (TE) for the N79 band 310 Mode).
Therefore, two resonance points exist in the 3.4GHz-3.6GHz frequency band and two resonance points exist between 4.8GHz and 5.0GHz, so that the 5G dual-band working effect is realized.
In this embodiment, the overall section height of the antenna is preferably only 1.73mm (-0.019 lambda) 1 @3.5 GHz); the planar dimensions of the first metal structure 1 of the first substrate integrated waveguide structure surface layer and the second metal structure 4 of the second substrate integrated waveguide structure surface layer are 0.4λ 1 ×0.14λ 1 。
It should be specifically noted that the design of the present invention may include two frequency bands, namely, N78 (3.4 GHz-3.6 GHz) and N79 (4.8 GHz-5.0 GHz), but is not limited to the 3.4GHz-3.6GHz and 4.8GHz-5.0GHz bands.
The dimensions of the first metal structure 1 and the second metal structure 4 are adjustable, and the coupling between the two substrate integrated waveguide structures can be tuned by adjusting the dimension ratio of the first metal structure 1 and the second metal structure 4.
Therefore, the design technology of the invention can be applied to other 5G frequency bands to realize the coverage of two 5G frequency bands.
As a preferred embodiment of the present invention, the simulation software uses HFSS, and the low-k dielectric substrate used for the first and second dielectric substrates has a dielectric constant of 3.55 and a loss angle of 0.0027;
the transmission response of the antenna element is shown in fig. 2 as |s 11 The I is less than or equal to-6 dB and is standard, the impedance bandwidth range is 3.4-3.6GHz (relative bandwidth is 5.7%), 4.8-5GHz (relative bandwidth is 4.08%), the N78 (3.4 GHz-3.6 GHz) frequency band and the N79 (4.8 GHz-5.0 GHz) frequency band are well covered, and the broadband coverage of the 5G dual-band is realized.
Fig. 3 is a simulated pattern at 3.5GHz for the present antenna element, which achieves a gain of 4.63dBi at 3.5GHz and an antenna efficiency of 87.1%.
Fig. 4 is a simulated pattern at 4.9GHz for the present antenna element, which achieves a gain of 5.17dBi at 4.9GHz, an antenna efficiency of 83.2%,
therefore, the laminated substrate integrated waveguide antenna can meet the dual-band coverage requirement of the terminal antenna.
The foregoing is only a preferred embodiment of the invention, it being noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the present invention, and such modifications and adaptations are intended to be comprehended within the scope of the invention.
Claims (7)
1. The laminated substrate integrated waveguide antenna facing the 5G dual-band coverage is characterized by comprising a first substrate integrated waveguide structure and a second substrate integrated waveguide structure, wherein the upper surfaces of the first substrate integrated waveguide structure and the second substrate integrated waveguide structure are respectively a first metal structure (1) and a second metal structure (4) which are the same in size;
the first metal structure (1) is positioned at the center of the top of the first dielectric substrate (2), the second metal structure (4) is positioned at the center of the top of the second dielectric substrate (5), the first dielectric substrate (2) is laminated at the upper end of the second dielectric substrate (5) through the adhesive plate (3), and the bottom of the second dielectric substrate (5) is also laminated with the metal ground (6);
the grounding through hole (7) penetrates through the first metal structure (1), the first dielectric substrate (2), the bonding plate (3), the second metal structure (4), the second dielectric substrate (5) from top to bottom and extends to the surface of the metal ground (6);
and a coaxial feed structure (8) is further arranged in the metal ground (6), and the coaxial probe is used for feeding the second substrate integrated waveguide structure from the metal ground (6) to the second metal structure (4).
2. The laminated substrate integrated waveguide antenna facing 5G dual-band coverage according to claim 1, wherein the grounding through holes (7) are arranged on the inner side edges of two adjacent sides of the first metal structure (1) and the second metal structure (4) in a single row.
3. The stacked-type substrate integrated waveguide antenna for 5G dual-band coverage according to claim 2, wherein the first substrate integrated waveguide structure and the second substrate integrated waveguide structure are rectangular substrate integrated waveguide antennas constructed by using a substrate integrated waveguide technology.
4. A stacked substrate integrated waveguide antenna for 5G dual band coverage according to claim 3, wherein the second substrate integrated waveguide structure is used as a main radiator, and two resonant modes are generated after feeding and are respectively located in the first frequency band and the second frequency band; the first substrate integrated waveguide structure laminated on the top end of the second substrate integrated waveguide structure is used as a secondary radiator, a new resonance point is excited in each of the first frequency band and the second frequency band, two additional resonance modes are generated, and therefore two resonance points exist in each of the first frequency band and the second frequency band, and double-frequency-band operation is achieved.
5. A stacked-type substrate integrated waveguide antenna for 5G dual band coverage according to claim 4, wherein the dimension ratio of the first metal structure (1) and the second metal structure (4) is adjustable for tuning the coupling between the first substrate integrated waveguide structure and the second substrate integrated waveguide structure.
6. The stacked-type substrate integrated waveguide antenna for 5G dual-band coverage of claim 5, wherein the first band is an N78 band comprising 3.4GHz-3.6GHz and the second band is an N79 band comprising 4.8GHz-5.0GHz.
7. A stacked substrate integrated waveguide antenna for 5G dual band coverage according to any of claims 1-6, wherein the overall height of the stacked substrate integrated waveguide antenna is 1.73mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310949010.9A CN116845553A (en) | 2023-07-31 | 2023-07-31 | Laminated substrate integrated waveguide antenna for 5G dual-band coverage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310949010.9A CN116845553A (en) | 2023-07-31 | 2023-07-31 | Laminated substrate integrated waveguide antenna for 5G dual-band coverage |
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| Publication Number | Publication Date |
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| CN116845553A true CN116845553A (en) | 2023-10-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310949010.9A Pending CN116845553A (en) | 2023-07-31 | 2023-07-31 | Laminated substrate integrated waveguide antenna for 5G dual-band coverage |
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| Country | Link |
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| CN (1) | CN116845553A (en) |
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2023
- 2023-07-31 CN CN202310949010.9A patent/CN116845553A/en active Pending
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