CN110350289A - The active microstrip antenna of low section based on substrate integration wave-guide a quarter mould feed - Google Patents
The active microstrip antenna of low section based on substrate integration wave-guide a quarter mould feed Download PDFInfo
- Publication number
- CN110350289A CN110350289A CN201910553898.8A CN201910553898A CN110350289A CN 110350289 A CN110350289 A CN 110350289A CN 201910553898 A CN201910553898 A CN 201910553898A CN 110350289 A CN110350289 A CN 110350289A
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- guide
- active
- substrate
- integration wave
- section based
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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
- H01Q1/12—Supports; Mounting means
-
- 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
-
- 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
- H01Q23/00—Antennas with active circuits or circuit elements integrated within them or attached to them
-
- 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
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- Waveguide Aerials (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The invention discloses a kind of active microstrip antennas of low section based on substrate integration wave-guide a quarter mould feed, including medium substrate, radiation patch and support column, the lower surface of medium substrate to be provided with metal floor, and upper surface is provided with four pieces of sheet metals；The inside of four pieces of sheet metals forms the space for placing active circuit module, and the outside of every piece of sheet metal is connect to form a quarter mould substrate integration wave-guide chamber with metal floor by metallization VIA, be connect by microstrip line with feeding network；The middle position of medium substrate is integrated with the active circuit module with metallic shield；Radiation patch is located above medium substrate by the support of support column.The present invention not only solves the welding processing problem of fed by coaxial probe and the floor imperfection problem of coupling cutler feed, has simultaneously effective expanded bandwidth, has improved antenna performance；And space utilization rate is improved on the basis of not influencing antenna performance, reduce the whole section of active antenna.
Description
Technical field
The present invention relates to antenna technical field more particularly to it is a kind of based on substrate integration wave-guide a quarter mould feed it is low
The active microstrip antenna of section.
Background technique
With the fast development of wireless communication technique and demand, antenna and radio-frequency apparatus are as decision wireless system performance
Key element faces more and more challenges: compact-sized, system weight is small, signal quality is high, vdiverse in function etc..Traditional general
The scheme of antenna and radio-frequency apparatus separate design has been difficult to fully meet the requirement of system, and active integrated antenna is as a kind of suitable
It answers the solution of the development trend of wireless system to have been obtained to be widely applied.
Active antenna develops to today, we can sum up it and be compared to tradition in microwave and millimeter wave system
Passive antenna some unique advantages:
(1) advantage in system performance.The signal-to-noise ratio of system decides the performance of system, and active integrated antenna avoids
Extra loss between antenna and RF front-end module effectively improves the utilization rate of signal compared to traditional scheme, is
System efficiency, ensure that system signal noise ratio does not have unnecessary deterioration.
(2) advantage in system bulk.RF front-end circuit and antenna are integrated, individually arrangement can be saved and penetrated
The space of frequency front-end circuit, the volume of system can be obtained by preferable control.
For present widely applied active integrated antenna example, such as the active receiving antenna of satellite navigation.Major part is adopted
It is the circular polarized antenna for designing a wide lobe above one piece of PCB, the active circuits such as amplifier, filter is designed
In the bottom surface PCB side.In the low section characteristic for referring to antenna, it is also concerned only with the profile performance of antenna part, but for real
For the situation of border, the section characteristic of entire active antenna should be antenna part and circuit part section and.So, existing
Active circuitry region is packed into there are also the space that this is advanced optimized in low section characteristic in most active antenna
The scheme of inner antenna.
On the other hand, as the standard of communication standard is more and more, requirement of the people for system bandwidth is also just also got over
It is wide.Naturally, wide to being also increasingly stringenter in the requirement of antenna, and for commonly using active low section microstrip antenna
With performance and the same pursuit.The feeding classification of microstrip antenna can be divided mainly into the feedback of micro-strip line side at present, coaxial line back is presented, is micro-
Band line closes on couple feed and aperture-coupled etc., but the mode of only aperture-coupled has and widens the beamwidth of antenna
Potentiality.However, aperture-coupled needs crack on the floor of microstrip antenna, this point the present more and more integrated in system
It is increasingly difficult to receive, because of the problem of system integration will necessarily bring electromagnetic compatibility between system module, and microstrip antenna
The imperfection on floor is a test really for system electromagnetic compatibility.
Summary of the invention
The technical problems to be solved by the present invention are: in view of the deficienciess of the prior art, the invention proposes a kind of bases
In substrate integration wave-guide a quarter mould feed the active microstrip antenna of low section, the antenna be based on substrate integration wave-guide four/
One mould feed, not only introduces another mode of resonance, effectively extends bandwidth；Meanwhile the feeding classification is compared to coaxially
Probe feed simplifies processing without welding, and relative slot couple feed, and remains the integrality on antenna floor,
It not only solves since floor is cracked the electromagnetic compatibility problem of generation, also to integrate processing and fabricating multi-layer board with other modules later
Provide advantage.And active circuit is integrated in inner antenna, which will have on the basis of not influencing antenna performance
Source circuit part is integrated in inner antenna, forms cramped construction, is effectively utilized the dielectric space of microstrip antenna itself, significantly
Reduce the section of active antenna (integral part for considering antenna and circuit).
A kind of active microstrip antenna of low section based on substrate integration wave-guide a quarter mould feed provided by the invention,
It is characterized in that, including medium substrate, radiation patch and support column, the lower surface of medium substrate is provided with metal floor, medium base
The upper surface of plate is provided with four pieces of sheet metals；The inside of four pieces of sheet metals forms the space for placing active circuit module, every block of gold
The outside for belonging to piece connect to form a quarter mould substrate integration wave-guide chamber, the waveguide cavity with metal floor by metallization VIA
Body is motivated by microstrip line by feeding network；The middle position of medium substrate is integrated with the active circuit mould with metallic shield
Block；Radiation patch is located above medium substrate by the support of support column.
Further, every piece of sheet metal is additionally provided with strip gap.I.e. in a quarter mould substrate integrated wave-guide cavity wave
Top makes the gap of certain length and width, the resonance of excitation can be adjusted, and enhance resonance, improves for convenience of being laid out
Corner cut and caused by resonance performance loss.
Further, sheet metal is the rectangular metal sheet of inside corner cut, and corner cut (rectangular metal sheet excision) is being situated between
The middle position of matter substrate forms the space for placing active circuit module, and the both sides on the outside of every piece of sheet metal pass through metallization VIA
It connect to form a quarter mould substrate integration wave-guide chamber with metal floor.
Further, feeding network is the five port microstrip networks that phase difference is 90 °.
Further, the support column is nylon column.
Further, the height of the active microstrip antenna is 9.508mm, wherein medium substrate with a thickness of 0.508mm,
The height of support column be 8mm, radiation patch with a thickness of 1mm, the height of the active circuit module with metallic shield is
2.5mm。
Further, the dielectric constant of medium substrate is 3.66.
Further, the one side of sheet metal strip gap on the inside of the sheet metal on the inside of the sheet metal at a distance from be
4.7mm, the length in sheet metal gap are 30.5mm, width 2mm.
Further, medium substrate, radiation patch, active circuit module and sheet metal are square.
Further, the side length of medium substrate is 115mm, and the side length of radiation patch is 85.5mm, active circuit module
Side length is 25mm, a length of 20mm of the incisal angle edge of sheet metal.
The present invention is fed by a quarter mould of substrate integration wave-guide, and the welding for not only solving fed by coaxial probe adds
The floor imperfection problem of work problem and coupling cutler feed, while introducing new mode of resonance and effectively having expanded bandwidth,
Improve antenna performance；And active circuit is dexterously built in inner antenna, it is improved on the basis of not influencing antenna performance
Space utilization rate, directly reduces the whole section of active antenna.Active microstrip antenna of the invention has low section, bandwidth
The characteristics of enhancing, compact to design, simple process is easily integrated, at low cost.
Detailed description of the invention
Examples of the present invention will be described by way of reference to the accompanying drawings, in which:
Fig. 1 is the side view of antenna provided in an embodiment of the present invention；
Fig. 2 is the top view of antenna provided in an embodiment of the present invention；
Fig. 3 is the active S11 in port of the antenna provided in an embodiment of the present invention when not considering feeding network and gain curve
Schematic diagram；
Fig. 4 is that port S11 parameter curve when antenna provided in an embodiment of the present invention combines simple microstrip feed network shows
It is intended to；
Fig. 5 is that the gain of antenna provided in an embodiment of the present invention and axis compare curve synoptic diagram；
Fig. 6 is that the axis of antenna provided in an embodiment of the present invention compares directional diagram；
Fig. 7 is the gain pattern of antenna provided in an embodiment of the present invention.
Wherein, 1- radiation patch, 2- support column, 3- metal floor, 4- sheet metal, 5- active circuit module, 6- medium base
Plate, 7- metallization VIA.
Specific embodiment
All features disclosed in this specification or disclosed all methods or in the process the step of, in addition to mutually exclusive
Feature and/or step other than, can combine in any way.
Any feature disclosed in this specification unless specifically stated can be equivalent or with similar purpose by other
Alternative features are replaced.That is, unless specifically stated, each feature is an example in a series of equivalent or similar characteristics
?.
Illustrate embodiments of the present invention below by way of specific specific example, those skilled in the art can be by this specification
Other advantages and efficacy of the present invention can be easily understood for disclosed content.The present invention can also pass through in addition different specific realities
The mode of applying is embodied or practiced, the various details in this specification can also based on different viewpoints and application, without departing from
Various modifications or alterations are carried out under spirit of the invention.
As depicted in figs. 1 and 2, active microstrip antenna of the invention includes being integrated with the active circuit mould with metallic shield
Medium substrate 6, radiation patch 1 and the support column 2 nonmetallic as support of block 5, it is preferable that support column 2 is nylon column.Medium
The lower surface of substrate 6 is provided with metal floor 3, and upper surface is provided with four pieces of sheet metals 4；The inside of four pieces of sheet metals 4 forms and puts
It is equipped with the space of source circuit module 5, the outside of every piece of sheet metal 4 connect four points of formation with metal floor 3 by metallization VIA 7
One of mould substrate integration wave-guide chamber, the cavity motivated by microstrip line；The middle position of medium substrate 6 is integrated with band metallic shield
Active circuit module 5, only need to consider influence of the metallic shield to antenna performance, metallic shield is updated to one in antenna
Bodyization design, efficiently utilizes the air dielectric space of micro-strip paster antenna.Radiation patch 1 is located at by the support of support column 2 and is situated between
6 top of matter substrate.There are 90 ° since four 90 ° of phase phase difference of a quarter mould feeding substrate integrated waveguides have motivated two
The TM of the microstrip antenna of phase difference10Mould, to give off stable circularly polarised wave.
In one particular embodiment of the present invention, as shown in Figure 1, the whole height of antenna is 9.508mm, wherein medium
The thickness h 0 of substrate 6 is 0.508mm, and the Ro4350 plate that dielectric constant is 3.66, the lower surface setting of medium substrate 6 can be used
There is complete earth plate 3, upper surface is feed structure, and centre is integrated with the active circuit that metallic shield is had in antenna
Module 5, the height h3 of active circuit module 5 are 2.5mm.Distance h1 of the radiation patch 1 apart from medium substrate 6 is 8mm, as branch
Support be model M2.5, highly be 8mm nylon column.The thickness h 2 of radiation patch 1 is 1mm.
Medium substrate 6, radiation patch 1, that the shape of active circuit module 5 and sheet metal 4 can according to need progress is specific
Selection.In one particular embodiment of the present invention, it four is square, as shown in Fig. 2, sheet metal 4 is inside cutting at this time
The sheet metal at angle, when sheet metal 4 is square, the sheet metal empty portions that corner cut is formed are isosceles right triangle, every block of gold
Belong to the both sides on the outside of piece to connect to form a quarter mould substrate integration wave-guide chamber with metal floor 3 by metallization VIA 7.Medium
The side length wg of substrate 6 is 115mm, and the side length wp of radiation patch 1 is 85.5mm, and the side length ws of active circuit module 5 is 25mm.Feedback
The sheet metal 4 that electric structure is with four one side corner cuts of the five port microstrips network connection that phase difference is 90 °, in every sheet metal
It connect to form a quarter mould substrate integration wave-guide chamber, corner cut with metal floor 3 by metallization VIA 7 on 4 outside both sides
Side length l1 (bottom edge of isosceles right triangle) is 20mm.It preferably, can be 4.7mm with sheet metal corner cut side length l1 distance w2
It is 2mm that place, which opens wide w1, and long l2 is the gap of 30.5mm to enhance resonance.
Fig. 3 describes S when antenna does not consider feeding network11And gain curve, curve are obviously shown by two frequencies
Feature with combination also illustrates that there are two the mode of resonance (a quarters of substrate integration wave-guide resonant cavity for antenna tool
The TM of mould and microstrip antenna10Mould).Compared to conventional microstrip antenna, inherently just there is the characteristics of broadened bandwidth.
Fig. 4 describes the S of return loss when antenna combines simple micro-strip feedback net11Parameter curve.As seen from the figure, in institute
Need the surplus for having sufficient in frequency band (1467~1492MHz).Even if the return loss of antenna also can there are mismachining tolerance
Meet requirement, fully demonstrates the present invention to the spreading characteristic of bandwidth.
The gain curve and axis that Fig. 5 describes antenna are than curve, and as seen from the figure, antenna gain is functional, highest
Gain reaches 8.4dBic.And axis ratio has reached 0.5dB in centre frequency 1.48GHz, required frequency band (1467~
In 1492MHz), axis is than also keeping good.
Fig. 6 depicts axis corresponding to the center frequency point 1480MHz of antenna than directional diagram, and as seen from the figure, antenna exists
Within the scope of the 120deg of entire theta=-60~60deg, axis has good circular polarisation performance than being both less than 3dB.
Fig. 7 be antenna center frequency point 1480MHz left-handed and clockwise direction figure, wherein scheme (a) be when phi=0 °,
The left-handed and clockwise direction figure of antenna；Figure (b) is the left-handed and clockwise direction figure of antenna when phi=45 °.It can be seen by figure
Out, antenna has good circular polarisation performance and front and back ratio and symmetry.
The above-described embodiments merely illustrate the principles and effects of the present invention, and is not intended to limit the present invention.It is any ripe
The personage for knowing this technology all without departing from the spirit and scope of the present invention, carries out modifications and changes to above-described embodiment.Cause
This, institute is complete without departing from the spirit and technical ideas disclosed in the present invention by those of ordinary skill in the art such as
At all equivalent modifications or change, should be covered by the claims of the present invention.
The invention is not limited to specific embodiments above-mentioned.The present invention, which expands to, any in the present specification to be disclosed
New feature or any new combination, and disclose any new method or process the step of or any new combination.
Claims (10)
1. a kind of active microstrip antenna of low section based on substrate integration wave-guide a quarter mould feed, which is characterized in that including
Medium substrate, radiation patch and support column, the lower surface of medium substrate are provided with metal floor, the upper surface setting of medium substrate
There are four pieces of sheet metals；The inside of four pieces of sheet metals forms the space for placing active circuit module, passes through on the outside of every piece of sheet metal
Metallization VIA connect to form a quarter mould substrate integration wave-guide chamber with metal floor, the wave-guide cavity wave by microstrip line by
Feeding network excitation；The middle position of medium substrate is integrated with the active circuit module with metallic shield；Radiation patch passes through
The support of support column is located above medium substrate.
2. a kind of active micro-strip day of low section based on substrate integration wave-guide a quarter mould feed according to claim 1
Line, which is characterized in that every piece of sheet metal is additionally provided with strip gap.
3. a kind of active micro-strip day of low section based on substrate integration wave-guide a quarter mould feed according to claim 1
Line, which is characterized in that sheet metal is the rectangular metal sheet of inside corner cut, and corner cut is formed in the middle position of medium substrate and is placed with
The space of source circuit module, the both sides on the outside of every piece of sheet metal connect to form a quarter by metallization VIA with metal floor
Mould substrate integration wave-guide chamber.
4. a kind of active micro-strip day of low section based on substrate integration wave-guide a quarter mould feed according to claim 1
Line, which is characterized in that feeding network is the five port microstrip networks that phase difference is 90 °.
5. a kind of active micro-strip day of low section based on substrate integration wave-guide a quarter mould feed according to claim 1
Line, which is characterized in that the support column is nylon column.
6. a kind of active micro-strip day of low section based on substrate integration wave-guide a quarter mould feed according to claim 1
Line, which is characterized in that the height of the active microstrip antenna is 9.508mm, wherein medium substrate with a thickness of 0.508mm, branch
The height of dagger is 8mm, radiation patch with a thickness of 1mm, the height of the active circuit module with metallic shield is 2.5mm.
7. a kind of active micro-strip day of low section based on substrate integration wave-guide a quarter mould feed according to claim 1
Line, which is characterized in that the dielectric constant of medium substrate is 3.66.
8. a kind of active micro-strip day of low section based on substrate integration wave-guide a quarter mould feed according to claim 2
Line, which is characterized in that the one side of sheet metal strip gap on the inside of the sheet metal on the inside of the sheet metal at a distance from be
4.7mm, the length in sheet metal gap are 30.5mm, width 2mm.
9. a kind of active micro-strip day of low section based on substrate integration wave-guide a quarter mould feed according to claim 1
Line, which is characterized in that medium substrate, radiation patch, active circuit module and sheet metal are square.
10. a kind of active micro-strip of low section based on substrate integration wave-guide a quarter mould feed according to claim 9
Antenna, which is characterized in that the side length of medium substrate is 115mm, and the side length of radiation patch is 85.5mm, the side of active circuit module
A length of 25mm, a length of 20mm of the incisal angle edge of sheet metal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910553898.8A CN110350289B (en) | 2019-06-25 | 2019-06-25 | Low-profile active microstrip antenna based on substrate integrated waveguide quarter-mode feed |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910553898.8A CN110350289B (en) | 2019-06-25 | 2019-06-25 | Low-profile active microstrip antenna based on substrate integrated waveguide quarter-mode feed |
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| CN110350289A true CN110350289A (en) | 2019-10-18 |
| CN110350289B CN110350289B (en) | 2020-11-03 |
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Cited By (8)
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| CN111682309A (en) * | 2020-05-29 | 2020-09-18 | 杭州电子科技大学 | Single-layer single-feed back cavity circularly polarized filter antenna |
| CN111682308A (en) * | 2020-05-29 | 2020-09-18 | 杭州电子科技大学 | Single-layer double-circular-polarization cavity-backed traveling wave antenna with filtering function |
| CN113506987A (en) * | 2021-06-24 | 2021-10-15 | 华南理工大学 | Broadband high-gain circularly polarized filter antenna and wireless communication equipment |
| CN113506976A (en) * | 2021-06-25 | 2021-10-15 | 华南理工大学 | High-gain circularly polarized antenna and wireless communication device |
| CN113659324A (en) * | 2021-07-26 | 2021-11-16 | 西安理工大学 | Three-frequency quarter-mode substrate integrated waveguide antenna |
| CN113948858A (en) * | 2021-10-18 | 2022-01-18 | 国网北京市电力公司 | Printed board antenna |
| CN117013249A (en) * | 2023-09-06 | 2023-11-07 | 南通大学 | Low elevation angle double-frequency dual-beam patch antenna |
| CN117832802A (en) * | 2024-01-30 | 2024-04-05 | 深圳大学 | Antenna microsystem structure |
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| CN113506976B (en) * | 2021-06-25 | 2022-09-20 | 华南理工大学 | High-gain circularly polarized antenna and wireless communication device |
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| CN113659324A (en) * | 2021-07-26 | 2021-11-16 | 西安理工大学 | Three-frequency quarter-mode substrate integrated waveguide antenna |
| CN113948858A (en) * | 2021-10-18 | 2022-01-18 | 国网北京市电力公司 | Printed board antenna |
| CN117013249A (en) * | 2023-09-06 | 2023-11-07 | 南通大学 | Low elevation angle double-frequency dual-beam patch antenna |
| CN117013249B (en) * | 2023-09-06 | 2024-04-05 | 南通大学 | Low elevation angle double-frequency dual-beam patch antenna |
| CN117832802A (en) * | 2024-01-30 | 2024-04-05 | 深圳大学 | Antenna microsystem structure |
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| Publication number | Publication date |
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| CN110350289B (en) | 2020-11-03 |
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Inventor after: Yuan Liping Inventor after: Sun Kai Inventor after: Tang Yue Inventor after: Liu Sihao Inventor after: Yang Deqiang Inventor after: Chen Bo Inventor before: Sun Kai Inventor before: Tang Yue Inventor before: Liu Sihao Inventor before: Yang Deqiang Inventor before: Chen Bo |