CN108682945A - A kind of electromagnetic horn and preparation method thereof - Google Patents
A kind of electromagnetic horn and preparation method thereof Download PDFInfo
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- CN108682945A CN108682945A CN201810418730.1A CN201810418730A CN108682945A CN 108682945 A CN108682945 A CN 108682945A CN 201810418730 A CN201810418730 A CN 201810418730A CN 108682945 A CN108682945 A CN 108682945A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
- H01Q13/02—Waveguide horns
- H01Q13/0283—Apparatus or processes specially provided for manufacturing horns
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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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
- H01Q13/02—Waveguide horns
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Waveguide Aerials (AREA)
Abstract
The invention discloses a kind of electromagnetic horns, including feed dielectric layer, host dielectric layer and the blanket dielectric layer being cascading, and the contact surface of adjacent media interlayer is equipped with metal foil；It is provided with feed structure on feed dielectric layer；Host dielectric layer includes：Dielectric portion with cavity, and the dielectric loading with notching construction, dielectric loading are arranged in the end of dielectric portion, and the inner wall of cavity is coated with metal foil.The preparation method of above-mentioned electromagnetic horn, including：Cutting process is carried out to dielectric portion, dielectric portion is made to form cavity；Metalized is carried out to the inner wall of cavity, inner wall is made to be coated with metal foil；Extension processing is carried out in the end of dielectric portion, forms the dielectric loading of host dielectric layer；Cutting process is carried out to dielectric loading, makes dielectric loading that there is notching construction；Before will there is feed dielectric layer, host dielectric layer and the blanket dielectric layer of feed structure to stack gradually from bottom to top, metalized is carried out in the contact surface of adjacent dielectric.
Description
Technical field
The present invention relates to radio antenna technical field, a kind of electromagnetic horn and preparation method thereof is particularly related to.
Background technology
Emerge one after another recently as high performance smart mobile phone, tablet computer, laptop, in addition big data,
The rise of cloud computing, continuous expansion of the mankind to information requirement, super clear video, 3D video display, VR (virtual reality) etc. are required for
A large amount of data transmission, limited frequency spectrum resource become more and more crowded, to realize that the information transmission of high speed just needs high bandwidth
The communication technology, relative to the microwave communication of lower frequency, millimeter wave/Terahertz have relative bandwidth it is small, it is easy to accomplish high band
Wide feature, the communication of millimeter wave/Terahertz are increasingly valued by people, and communication system is just quickly marched toward millimeter wave/terahertz
Hereby frequency range.Also have the characteristics that high spatial resolution, high directivity, preferable substance sensitive relative to microwave communication, relatively
There are the advantages such as scattering is small, transmittance is strong, safe, spectrally resolved property is good in infrared.Someone claims millimeter wave/Terahertz communication
It is the inexorable trend of Communication Development, is to be known as new generation of wireless revolution after microwave and the another important communication frequency range of optic communication.So
And millimeter wave/Terahertz systems face research and development, manufacturing cost height, the big equal challenge of link attenuation.The window that antenna is transmitted as information
Mouthful, performance quality decides the height of communication quality.To cope with above-mentioned challenge, millimeter wave/Terahertz communication system compels to be essential
Seek the antenna of low cost, high-gain, high bandwidth.
The radiation efficiency of antenna, millimeter wave/Terahertz frequency range can be reduced for the material of the design high-k of antenna
Dielectric loss can also be increased with frequency substantially to be increased.Therefore, people's generally use low-k, low-loss when designing antenna
Material to improve antenna performance, the material of low-k can reduce surface wave loss, and low-loss material can have
Effect improves the gain of antenna.But due to the limitation of material technology, the dielectric constant of material can not possibly infinitely small, dielectric loss
It can not accomplish zero.And the material of low-k, low dielectric loss is often expensive, this has resulted in the liter of antenna cost
It is high.
Electromagnetic horn is surface antenna, and the microwave antenna of circle or rectangular section that waveguide tube terminal gradual change is opened is to use
Widest one kind microwave antenna.The waveguide for transmitting TE10 patterns, the face where broadside are the faces H, and the face where narrow side is E
Face.The faces H electromagnetic horn is a kind of antenna form formed by extending the faces waveguide H, has wider wave beam in the faces E, and in H
Face has relatively narrow wave beam.The faces H electromagnetic horn is a kind of antenna form formed by extending the face of waveguide H, is had in the faces E
Wider wave beam, and there is relatively narrow wave beam in the faces H.There are the faces H electromagnetic horn the advantages such as end-fire and high integration to be answered extensively
With, however relative to its narrower bandwidth of traditional pyramidal horn antenna, gain is relatively low, limits system performance.Substrate is integrated
Waveguide Substrate integrated waveguide (SIW) are a kind of new microwave transmission line forms, logical using metal
The field communication mode of waveguide is realized in hole on dielectric substrate, is gradually adopted extensively in the structure of millimeter wave frequency band substrate integration wave-guide
With.In presently relevant document report, people realize the faces H electromagnetic horn using SIW structures.Although having relative to microstrip line SIW
There is low-loss advantage, however it is still larger in this loss of millimeter wave frequency band, therefore reduce the gain of antenna.Additionally due to
The faces H electromagnetic horn is smaller in the faces E size, causes the severe mismatch in aerial radiation end and air, and bandwidth performance is poor.
Therefore, there is an urgent need for a kind of novel electromagnetic horns, and the faces H electromagnetic horn is made to have low dielectric loss and excellent gain
And bandwidth performance.
Invention content
In view of this, it is an object of the invention to propose a kind of loudspeaker with low dielectric loss and wide bandwidth and high-gain
Antenna and preparation method thereof.
Based on above-mentioned purpose electromagnetic horn provided by the invention, including be cascading feed dielectric layer, main body be situated between
The contact surface of matter layer and blanket dielectric layer, adjacent media interlayer is equipped with metal foil；
Wherein, it is provided with feed structure on the feed dielectric layer；
The host dielectric layer includes：Dielectric portion with cavity, and the dielectric loading with notching construction, are given an account of
Matter load is arranged in the end of the dielectric portion, and the inner wall of the cavity is coated with metal foil.
The cavity is opened in the middle part of the dielectric portion in one of the embodiments, and the dielectric loading setting exists
The end of the host dielectric layer.
The cavity is horn-like in one of the embodiments,.
The dielectric loading is arranged in the wider end of the horn-like cavity in one of the embodiments,.
The feed structure is narrow with the cavity in the position of the feed dielectric layer in one of the embodiments,
The position at end corresponds to.
The notching construction is air groove in one of the embodiments, and the shape of the air groove is rectangle, triangle
Shape, trapezoidal, round, polygon or arc.
In one of the embodiments, in the host dielectric layer, the material of the dielectric portion is glass cloth substrate, poly- four
At least one of vinyl fluoride glass cloth, ceramics, ferroelectric material, ferrite material, ferromagnetic material and polytetrafluoroethylene (PTFE)；The medium
The material of load is at least one of glass cloth substrate, polytetrafluoroethylglass glass cloth, ceramics and polytetrafluoroethylene (PTFE).
The feed dielectric layer, the host dielectric layer and blanket dielectric layer difference in one of the embodiments,
It is set as at least one layer of.
The feed dielectric layer is set as one layer in one of the embodiments, and the host dielectric layer is set as two layers,
The blanket dielectric layer is respectively set one layer.
A kind of preparation method of above-mentioned electromagnetic horn, including：
Cutting process is carried out to the dielectric portion of host dielectric layer, the dielectric portion is made to form cavity；
Metalized is carried out to the inner wall of the cavity, the inner wall is made to be coated with metal foil；
Extension processing is carried out in the end of the dielectric portion, forms the dielectric loading of the host dielectric layer；
Cutting process is carried out to the dielectric loading, makes the dielectric loading that there is notching construction；
The feed dielectric layer, the host dielectric layer and blanket dielectric layer that will have feed structure from bottom to top successively
Before being stacked, metalized is carried out in the contact surface of adjacent dielectric.
From the above it can be seen that electromagnetic horn provided by the invention and preparation method thereof, by host dielectric layer
On open up cavity structure so that electromagnetic wave can reduce dielectric loss, and coordinate on host dielectric layer through air dielectric transmission
Dielectric loading with notching construction is set, improves the matching performance of antenna, to promote bandwidth of operation and the gain of antenna.
Description of the drawings
Fig. 1 is the electromagnetic horn Structure explosion diagram of the embodiment of the present invention；
Fig. 2 is the vertical view of the host dielectric layer of the electromagnetic horn of the embodiment of the present invention；
Fig. 3 is test and the emulation S parameter of the electromagnetic horn of the embodiment of the present invention；
Fig. 4 is emulation and measurement direction figure of the electromagnetic horn of the embodiment of the present invention in 89GHz；
Fig. 5 is emulation and measurement direction figure of the electromagnetic horn of the embodiment of the present invention in 93GHz；
Fig. 6 is emulation and measurement direction figure of the electromagnetic horn of the embodiment of the present invention in 96GHz；
Fig. 7 is emulation and measurement direction figure of the electromagnetic horn of the embodiment of the present invention in 99GHz；
Fig. 8 is the preparation method flow chart of the electromagnetic horn of the embodiment of the present invention.
Wherein,
Feed dielectric layer 100；
Feed structure 110；
Host dielectric layer 200；
Cavity 210；
Inner wall 211；
Dielectric loading 220；
Notching construction 221；
Blanket dielectric layer 300；
Location hole 400；
Flange plate structure 500.
Specific implementation mode
To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with specific embodiment, and reference
Attached drawing, the present invention is described in more detail.
The embodiment of the present invention provides a kind of electromagnetic horn, including feed dielectric layer, the host dielectric layer being cascading
And blanket dielectric layer, the contact surface of adjacent media interlayer are equipped with metal foil；
Wherein, it is provided with feed structure on the feed dielectric layer；
The host dielectric layer includes：Dielectric layer with cavity, and the dielectric loading with notching construction, are given an account of
Matter load is arranged in the end of the dielectric portion, and the inner wall of the cavity is coated with metal foil.
Electromagnetic horn provided in an embodiment of the present invention, by opening up cavity structure on host dielectric layer so that electromagnetic wave
Dielectric loss can be reduced through air dielectric transmission, and be equipped with the medium with notching construction on host dielectric layer and bear
It carries, improves the matching performance of antenna, to promote bandwidth of operation and the gain of antenna.
The electromagnetic horn of the present invention, is mainly based upon PCB (printed circuit board) or LTCC (low-temperature co-fired ceramics) technique is set
The faces the H electromagnetic horn of meter, is mainly used for the communication of millimeter wave/Terahertz.In use, external electromagnetic wave is entered through feed structure
It in antenna, and is transmitted in cavity at self feeding structure, then is transferred to from the notching construction of dielectric loading from cavity.
Referring to Fig. 1, being illustrated with the faces the H electromagnetic horn to work in W-waveband, electromagnetic horn includes being laminated from bottom to top
Feed dielectric layer 100, host dielectric layer 200 and the blanket dielectric layer 300 of setting.Wherein, in the feed dielectric layer 100 and institute
That states that host dielectric layer 200 is in contact is coated with the first metal foil on one side, in host dielectric layer 200 and the blanket dielectric layer 300
What is be in contact is coated with the second metal foil on one side.
First metal foil, the second metal foil material can it is identical can not also be identical.Specific material can be copper
Foil, aluminium foil and tinfoil paper etc., preferably copper foil, to improve temperature use scope, conduction and the electromagnetic shielding of electromagnetic horn
Effect etc..
The number of plies of the feed dielectric layer 100 can be adjusted according to actual demand, be set as one layer, two layers or more
Layer；The number of plies of the host dielectric layer 200 can be adjusted according to actual demand, be set as one layer, two layers or multilayer；Institute
Stating the number of plies of blanket dielectric layer 300 can be adjusted according to actual demand, be set as one layer, two layers or multilayer.
Preferably, the feed dielectric layer 100 is set as one layer, and the host dielectric layer 200 is set as two layers, described to cover
Lid dielectric layer 300 is set as one layer, so that the performance of antenna reaches preferable state.
Cavity 210 is preferably the middle part for being opened in the host dielectric layer 200, and shape is horn-like.Cavity 210 it is specific
Size is determined according to the frequency range of design.The inner wall 211 of cavity 210 is coated with the inner wall of metal foil, and metal foil can be copper
Foil, aluminium foil and tinfoil paper etc., preferably copper foil.
Dielectric loading 220 can carry out coated by dielectric to antenna end.Preferably, the dielectric constant of dielectric loading>1.Institute
Dielectric loading 220 is stated to be arranged in the end of the bulk media.It is preferably arranged on the wider of the horn-like cavity 210
End, the efficiency of transmission being transmitted to preferably to improve electromagnetic wave from cavity 210 in notching construction 221.
Referring to Fig. 2, notching construction 221 is preferably air groove, preferably to improve the matching of antenna end and air.
221 position of notching construction, shapes and sizes are not unique, designed according to working frequency range.The shape of notching construction 221 can be length
Rectangular, triangle, trapezoidal, round, polygon or arc etc..
It is provided with feed structure 110 in feed dielectric layer 100, using standard wave WR10 guide structures, is used for standard waveguide
It is transformed into antenna.Feed structure 110 is opposite with the position of dielectric portion on host dielectric layer 200 in the position of feed dielectric layer 100
It answers, specific location can be determined according to the frequency range of design.For example, in W-waveband in application, can be arranged corresponding to loudspeaker
The cavity 210 of shape is far from the end of dielectric loading 220, i.e., corresponding with the narrow end of horn-like cavity.
It is both provided with positioning in the feed dielectric layer 100, the host dielectric layer 200 and the blanket dielectric layer 300
Hole 400, and the location hole 400 of each dielectric layer to open up position, shapes and sizes identical, for each dielectric layer to be fixed shape
At electromagnetic horn.
It is both provided with flange in the feed dielectric layer 100, the host dielectric layer 200 and the blanket dielectric layer 300
Dish structure 500, and the flange plate structure 500 of each dielectric layer to open up position, shapes and sizes identical, for by each medium
Layer fixation forms electromagnetic horn.
The material of dielectric portion and the blanket dielectric layer 300 in the feed dielectric layer 100, the host dielectric layer 200
Can be FR4 (glass cloth substrate), F4B (polytetrafluoroethylglass glass cloth), ceramics, ferroelectric material, ferrite material, ferromagnetic material and
Any one in other baseplate materials such as polytetrafluoroethylene (PTFE) or many of combination.
The material of dielectric loading 220 can be FR4 (glass cloth substrate), F4B (polytetrafluoroethylglass glass cloth), ceramics and it is poly-
Any one in other dielectric materials such as tetrafluoroethene or many of combination.
Referring to Fig. 3, the test for the faces H electromagnetic horn and simulation parameter figure.The faces the H electromagnetic horn wraps respectively from bottom to top
Include one layer of feed dielectric layer 100, two layers of host dielectric layer 200 and one layer of blanket dielectric layer 300, thickness be respectively 0.254mm,
0.508mm, 0.508mm and 0.254mm, material are Rogers RO4350B, relative dielectric constant 3.5, at 10GHz
Loss tangent is 0.0037.It can be seen from the figure that the test result of the faces the H electromagnetic horn and simulation result coincide compared with
It is good, the frequency band of entire W-waveband can be covered.Fig. 4 to Fig. 7 is please referred to, is the test and emulation of four frequency points in the beamwidth of antenna
Directional diagram.As can be seen that whole bandwidth directional diagram is all more excellent.
Referring to Fig. 8, the embodiment of the present invention also provides a kind of preparation method of above-mentioned electromagnetic horn, including walk as follows
Suddenly：
Step S100, provider's dielectric layer (200), the host dielectric layer (200) are tied with dielectric portion, with feed
The feed dielectric layer (100) and blanket dielectric layer (300) of structure (110)；
Step S200 carries out cutting process to the dielectric portion of host dielectric layer (200), the dielectric portion is made to form cavity
(210)；
Step S300 carries out the first processing to the inner wall (211) of the cavity (210), the inner wall (211) is made to be coated with gold
Belong to foil；
In this step, the inner wall (211) that the cavity (210) are used to form to the dielectric portion carries out the first processing, tool
Body is to carry out metalized to the inner wall (211) of the cavity (210), so that the inner wall (211) of cavity (210) is coated with metal
Foil；
S400 carries out second processing to the end of the dielectric portion, the host dielectric layer (200) is made to form dielectric loading
(220)；
In this step, to the end of the dielectric portion carry out second processing, in particular to the end of the dielectric portion into
Row extension is handled；
S500 carries out cutting process to the dielectric loading (220), the dielectric loading (220) is made to have notching construction
(221)；
The feed dielectric layer (100) and blanket dielectric layer (300) are covered each by step S500 winners of institute by S600
The upper and lower surface of body dielectric layer (200) carries out metalized to the contact surface of adjacent dielectric before covering, makes to cover
The contact surface of adjacent dielectric is coated with metal foil after the completion of lid.
It should be noted that all statements for using " first " and " second " are for differentiation two in the embodiment of the present invention
The non-equal entity of a same names or non-equal parameter, it is seen that " first " " second " only for the convenience of statement, does not answer
It is interpreted as the restriction to the embodiment of the present invention, subsequent embodiment no longer illustrates this one by one.
Those of ordinary skills in the art should understand that：The discussion of any of the above embodiment is exemplary only, not
It is intended to imply that the scope of the present disclosure (including claim) is limited to these examples；Under the thinking of the present invention, above example
Or can also be combined between the technical characteristic in different embodiments, step can be realized with random order, and be existed such as
Many other variations of the different aspect of the upper present invention, for simplicity, they are not provided in details.
The embodiment of the present invention be intended to cover fall within the broad range of appended claims it is all it is such replace,
Modifications and variations.Therefore, all within the spirits and principles of the present invention, any omission, modification, equivalent replacement, the improvement made
Deng should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of electromagnetic horn, which is characterized in that including feed dielectric layer (100), the host dielectric layer being cascading
(200) and blanket dielectric layer (300), the contact surface of adjacent media interlayer are equipped with metal foil；
Wherein, it is provided with feed structure (110) on the feed dielectric layer (100)；
The host dielectric layer (200) includes：Dielectric portion with cavity (210), and the medium with notching construction (221)
It loads (220), the dielectric loading (220) is arranged in the end of the dielectric portion, and the inner wall (211) of the cavity (210) plates
There is metal foil.
2. electromagnetic horn according to claim 1, which is characterized in that the cavity (210) is opened in the dielectric portion
Middle part, end of dielectric loading (220) setting in the host dielectric layer (200).
3. electromagnetic horn according to claim 1, which is characterized in that the cavity (210) is horn-like.
4. electromagnetic horn according to claim 3, which is characterized in that the dielectric loading (220) is arranged in the loudspeaker
The wider end of shape cavity.
5. electromagnetic horn according to claim 3, which is characterized in that the feed structure (110) is in the feed dielectric
The position of layer (100), it is corresponding with the position of narrow end of the cavity (210).
6. electromagnetic horn according to claim 1, which is characterized in that the notching construction (221) is air groove, the sky
The shape of air drain is rectangle, triangle, trapezoidal, round, polygon or arc.
7. electromagnetic horn according to claim 1, which is characterized in that in the host dielectric layer (200), the dielectric portion
Material be glass cloth substrate, polytetrafluoroethylglass glass cloth, ceramics, ferroelectric material, ferrite material, ferromagnetic material and polytetrafluoroethyl-ne
At least one of alkene；The material of the dielectric loading (220) is glass cloth substrate, polytetrafluoroethylglass glass cloth, ceramics and gathers
At least one of tetrafluoroethene.
8. electromagnetic horn according to claim 1, which is characterized in that the feed dielectric layer (100), the bulk media
Layer (200) and the blanket dielectric layer (300) are respectively set at least one layer.
9. electromagnetic horn according to claim 1, which is characterized in that the feed dielectric layer (100) is set as one layer, institute
It states host dielectric layer (200) to be set as two layers, the blanket dielectric layer (300) is respectively set one layer.
10. a kind of preparation method according to claim 1 to 9 any one of them electromagnetic horn, which is characterized in that including：
Cutting process is carried out to the dielectric portion of host dielectric layer (200), the dielectric portion is made to form cavity (210)；
Metalized is carried out to the inner wall (211) of the cavity (210), the inner wall (211) is made to be coated with metal foil；
Extension processing is carried out in the end of the dielectric portion, forms the dielectric loading (220) of the host dielectric layer (200)；
Cutting process is carried out to the dielectric loading (220), makes the dielectric loading (220) that there is notching construction (221)；
In the feed dielectric layer (100), the host dielectric layer (200) and blanket dielectric layer (300) that will have feed structure
Before being cascading from bottom to top, metalized is carried out in the contact surface of adjacent dielectric.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810418730.1A CN108682945A (en) | 2018-05-04 | 2018-05-04 | A kind of electromagnetic horn and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810418730.1A CN108682945A (en) | 2018-05-04 | 2018-05-04 | A kind of electromagnetic horn and preparation method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN108682945A true CN108682945A (en) | 2018-10-19 |
Family
ID=63802914
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810418730.1A Pending CN108682945A (en) | 2018-05-04 | 2018-05-04 | A kind of electromagnetic horn and preparation method thereof |
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| CN (1) | CN108682945A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112787102A (en) * | 2020-12-29 | 2021-05-11 | 中国人民解放军战略支援部队航天工程大学 | Planar luneberg lens antenna using semi-open SIW horn antenna as feed source |
| CN113078472A (en) * | 2021-03-29 | 2021-07-06 | 上海航天测控通信研究所 | Preparation method of terahertz feed source loudspeaker corrugated lamination |
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| CN112787102A (en) * | 2020-12-29 | 2021-05-11 | 中国人民解放军战略支援部队航天工程大学 | Planar luneberg lens antenna using semi-open SIW horn antenna as feed source |
| CN112787102B (en) * | 2020-12-29 | 2022-09-23 | 中国人民解放军战略支援部队航天工程大学 | Planar luneberg lens antenna using semi-open SIW horn antenna as feed source |
| CN113078472A (en) * | 2021-03-29 | 2021-07-06 | 上海航天测控通信研究所 | Preparation method of terahertz feed source loudspeaker corrugated lamination |
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Application publication date: 20181019 |