CN109546348A - A kind of novel miniaturization broadband SW-SIW electromagnetic horn and its design method - Google Patents
A kind of novel miniaturization broadband SW-SIW electromagnetic horn and its design method Download PDFInfo
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- CN109546348A CN109546348A CN201811420295.2A CN201811420295A CN109546348A CN 109546348 A CN109546348 A CN 109546348A CN 201811420295 A CN201811420295 A CN 201811420295A CN 109546348 A CN109546348 A CN 109546348A
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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
-
- 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
Abstract
The present invention crosses you and discloses a kind of novel miniaturization broadband SW-SIW electromagnetic horn and its design method.The present invention opens identical periodical slot in top metal plate and bottom metal, coupled capacitor is generated between upper and lower slot, to will affect the unit for electrical property parameters of medium substrate, the propagation constant of dielectric layer and impedance operator is made to change, and then electromagnetic wave propagation is influenced, form slow wave characteristic.And the two kinds of slow-wave structures formed of slotting make electromagnetic wave be transformed to plane wave by spherical wave in the radiation port of electromagnetic horn, reduce radiation lobe width, effectively increase the radiation efficiency of antenna.It is compared with traditional electromagnetic horn, good directionality of the present invention has wider frequency band and higher gain, radiation efficiency is substantially increased, section is low, and size is small and the loss of plane circuit connection is lower, more easily realize integrated, structure is simple, and easy to process, cost is relatively low for engineer application.
Description
Technical field
The invention belongs to microwave antenna field of engineering technology, can be widely applied to interstellar communication, 5G (5th-
Generation it) communicates, in millimetre-wave attenuator, especially a kind of minimized wide-band slow wave substrate integration wave-guide (SW-SIW, Slow
Wave-Substrate Integrated Waveguide) technology the face H electromagnetic horn.
Background technique
With the arrival of the new generation of wireless communication technology, entire international community all is going into overdrive to build a new generation's communication base
Infrastructure and the research and development communication technology of new generation and novel microwave device.The communication system of a new generation to the performance of microwave device and
Higher requirements are also raised for integrated level.And antenna is component part the most key in communication system, in daily life and
Aerospace, the fields such as interstellar communication, which suffer from, to be widely applied.Realize that antenna broadband communications and miniaturization just become very
It is important.
Electromagnetic horn has simpler structure, convenient and fast feeding classification compared with traditional microstrip antenna.Moreover, loudspeaker
Antenna is able to achieve high-frequency communication, there is the advantages that broad frequency band, high directivity, high-gain.But electromagnetic horn is compared to biography
The microstrip antenna of system, its size is bigger, take up space it is bigger be difficult to integrate, and the traditional coaxial mistake of electromagnetic horn
The mode crossed is connected in circuit system, often generates biggish Insertion Loss.
Substrate integration wave-guide (SIW, Substrate Integrated Waveguide) technology, SIW and traditional rectangle
Metal waveguide has similar quasi- closure plane waveguiding structure, has good transmission characteristic.Moreover, substrate integration wave-guide is benefit
Be process with the PCB technology of standard, there is high q-factor, easy processing and integrated is light-weight, it is small in size the features such as.Substrate integrates wave
Leading is also a kind of waveguiding structure, and the cutoff frequency of the waveguide mainly is determined to compare with co-planar waveguide with microstrip circuit by bandwidth,
The physical size of SIW is still very big.Slow wave (SW, Slow Wave) structure is applied in travelling-wave tubes earliest, can allow in its slow wave
The speed for the electromagnetic wave propagated in structure reduces, and the wavelength of corresponding electromagnetic wave can also become smaller therewith.Due to antenna
Size is also related with the wavelength of electromagnetic wave, and SW structure can allow the physical size of antenna to further decrease.Therefore, minimized wide-band
SW-SIW electromagnetic horn has long-range scientific meaning and practical application value in the application of wireless communication field.
Summary of the invention
The object of the present invention is to provide a kind of novel miniaturization broadband SW-SIW electromagnetic horn, it have wider frequency band and
Higher gain, good directionality substantially increase radiation efficiency, and reduce volume, it is easier to realize integrated, structure letter
Single, application cost is lower.
The present invention is implemented as follows: minimized wide-band SW-SIW electromagnetic horn, including dielectric layer, in the top surface of dielectric layer
Equipped with metal layer at top, bottom metal layers are equipped in the bottom surface of dielectric layer, are equipped with microstrip line construction in the front end of metal layer at top
And SIW turns the excessive structural of micro-strip；It is all provided in the medium position of metal layer at top and bottom metal layers and offers position and shape
Corresponding slot forms slow-wave structure A and slow-wave structure B, forms axis of the slot along dielectric layer of slow-wave structure A and slow-wave structure B
Line is symmetrical and is in periodic distribution；It is equipped on dielectric layer along the symmetrical forward metal cylinder of axis and guiding metal cylinder,
Forward metal cylinder and guiding metal cylinder run through dielectric layer, and connect with metal layer at top and bottom metal layers, make top
Metal layer and bottom metal layers, which are formed, to be electrically connected；Forward metal cylinder is arranged in parallel in the front end two sides of dielectric layer, and is formed
Equivalent rectangular waveguide, guiding metal cylinder are in forward metal cylinder tip, along the opening angle of dielectric layer both sides of the edge, in rank
Ladder type distribution.Guiding metal cylinder is mainly so that electromagnetic horn is kept preferable direction to realize the better impedance matching of antenna
Property, the gain and radiation efficiency of antenna are improved, promotes the performance of antenna further.
In the forward metal cylinder and guiding metal cylinder, the spacing p between adjacent metal cylinder meets λc/4>
p>λc/ 20, the diameter d of metal cylinder1Meet d1<p<2.5d1, wherein λcIt is the cutoff wavelength of the main mould transmission of SIW.
Rectangular array is equipped in the end of metal layer at top and bottom metal layers, it is right above and below upper and lower two groups of rectangular arrays
Claim, dipole array is collectively formed.By loading dipole array, improve the gain of antenna, radiation energy is more concentrated, and is mentioned
The directionality of high antenna makes the radiation efficiency of antenna and performance have further promotion.
By adopting the above-described technical solution, it was found by the inventors of the present invention that being opened in top metal plate and bottom metal
Identical periodicity slot, generates coupled capacitor between upper and lower slot, to will affect the unit for electrical property parameters of medium substrate, makes dielectric layer
Propagation constant and impedance operator change, and then influence electromagnetic wave propagation, formed slow wave characteristic.And two formed that slot
Kind slow-wave structure makes electromagnetic wave be transformed to plane wave by spherical wave in the radiation port of electromagnetic horn, and it is wide to reduce radiation lobe
Degree, effectively increases the radiation efficiency of antenna.It is compared with traditional electromagnetic horn, good directionality of the present invention has wider frequency band,
With higher gain, radiation efficiency is substantially increased, section is low, and size is small and the loss of plane circuit connection is lower, it is easier to real
Existing integrated, structure is simple, and easy to process, cost is relatively low for engineer application.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is the face upwarding assumption diagram of Fig. 1；
Fig. 3 is the overlooking structure figure of Fig. 1；
Fig. 4 is the side block diagram of Fig. 1；
Fig. 5 is the perspective structure figure of Fig. 2；
Fig. 6 is minimized wide-band SW-SIW electromagnetic horn S of the present invention11HFSS simulation result diagram；
Fig. 7 is minimized wide-band SW-SIW electromagnetic horn H surface radiation directional diagram of the present invention；
Fig. 8 is the distribution map of the electric field of minimized wide-band SW-SIW electromagnetic horn of the present invention.
Specific embodiment
Embodiment: minimized wide-band SW-SIW electromagnetic horn, as shown in Figs 1-4, including dielectric layer 2, on the top of dielectric layer 2
Face is equipped with metal layer at top 1, is equipped with bottom metal layers 4 in the bottom surface of dielectric layer 2, is equipped with micro-strip in the front end of metal layer at top 1
Cable architecture 8 and SIW turn the excessive structural 9 of micro-strip；It is all provided with and offers in the medium position of metal layer at top 1 and bottom metal layers 4
Position and the corresponding slot of shape form slow-wave structure A 6 and slow-wave structure B 7, form slow-wave structure A 6 and slow-wave structure B 7
Slot it is symmetrical along the central axes of dielectric layer 2 and be in periodic distribution；It is equipped on dielectric layer 2 along the symmetrical front end gold of axis
Belong to cylinder 10 and guiding metal cylinder, forward metal cylinder 10 and guiding metal cylinder run through dielectric layer 2, and and top metal
Layer 1 and bottom metal layers 4 connect, and form metal layer at top 1 and bottom metal layers 4 and are electrically connected；Forward metal cylinder 10 exists
The front end two sides of dielectric layer 2 are arranged in parallel, and form equivalent rectangular waveguide, and guiding metal cylinder is in 10 end of forward metal cylinder
End, along the opening angle of 2 both sides of the edge of dielectric layer, in ladder pattern distribution.In the present embodiment, the structure of metal cylinder is oriented to as schemed
Shown in 5, it is divided into 8 groups, is to mark 11-18 in attached drawing respectively, which meets to form certain opening angle, in step type
Distribution, the better impedance matching of Lai Shixian antenna make electromagnetic horn keep preferable directionality, improve the gain of antenna, in turn
The radiation efficiency for improving antenna, promotes the performance of antenna further.But it is not limited in such scheme.
In the forward metal cylinder 10 and guiding metal cylinder, the spacing p between adjacent metal cylinder meets λc/
4>p>λc/ 20, the diameter d of metal cylinder1Meet d1<p<2.5d1, wherein λcIt is the cutoff wavelength of the main mould transmission of SIW.
Rectangular array 5, upper and lower about 5 two groups of rectangular arrays are equipped in the end of metal layer at top 1 and bottom metal layers 4
Symmetrically, dipole array 19 is collectively formed.
In the present embodiment, the material of medium substrate 2 is Rogers Ro6002 medium substrate material, and relative dielectric constant is
2.94, loss angle tangent 0.0012.With lower dielectric loss, conduction band metal and substrate cut-off adhesive force are well etc. special for it
Point.
In the present embodiment, the slot for forming slow-wave structure A 6 and slow-wave structure B 7 can be regular shape, or non-
Regular shape is also finally that can be adjusted according to actual parameter needs according to the overall shape that periodic arrangement is formed
's.
The ANSOFT HFSS simulation result of the present embodiment is as shown in Figure 6.From the return loss plot S of electromagnetic horn11It can be with
Find out, the electromagnetic horn passband width of invention is 32.87GHz~35.08GHz, communication bandwidth 2.21GHz.It is shown in Fig. 7,
SW-SIW electromagnetic horn of the invention has preferable directionality, and secondary lobe has obtained preferable inhibition, the increasing of greatest irradiation direction
Benefit is 12.1dB.As shown in figure 8, SW-SIW electromagnetic horn of the invention, the electromagnetic wave propagated is in radiation port, by spherical wave
Plane wave is formd, radiation lobe width is reduced, improves the radiation efficiency of antenna.
Claims (3)
1. a kind of minimized wide-band SW-SIW electromagnetic horn, including dielectric layer (2), it is characterised in that: in the top surface of dielectric layer (2)
Equipped with metal layer at top (1), bottom metal layers (4) are equipped in the bottom surface of dielectric layer (2), are set in the front end of metal layer at top (1)
There are microstrip line construction (8) and SIW to turn the excessive structural (9) of micro-strip；At the middle part of metal layer at top (1) and bottom metal layers (4)
Position, which is all provided with, offers position and the corresponding slot of shape, forms slow-wave structure A (6) and slow-wave structure B (7), forms slow-wave structure A
(6) and the slot of slow-wave structure B (7) is symmetrical along the central axes of dielectric layer (2) and be in periodic distribution；It is equipped on dielectric layer (2)
Along the symmetrical forward metal cylinder (10) of axis and guiding metal cylinder, forward metal cylinder (10) and guiding metal cylinder are equal
It is connect through dielectric layer (2), and with metal layer at top (1) and bottom metal layers (4), makes metal layer at top (1) and bottom metal
Layer (4) forms electrical connection；Forward metal cylinder (10) is arranged in parallel in the front end two sides of dielectric layer (2), and forms equivalent square
Shape waveguide, guiding metal cylinder be in forward metal cylinder (10) end, along dielectric layer (2) both sides of the edge opening angle, be in
Ladder pattern distribution.
2. minimized wide-band SW-SIW electromagnetic horn according to claim 1, it is characterised in that: the forward metal circle
In column (10) and guiding metal cylinder, the spacing p between adjacent metal cylinder meets λc/4>p>λc/ 20, metal cylinder it is straight
Diameter d1Meet d1<p<2.5d1, wherein λcIt is the cutoff wavelength of the main mould transmission of SIW.
3. minimized wide-band SW-SIW electromagnetic horn according to claim 1, it is characterised in that: in metal layer at top (1)
And the end of bottom metal layers (4) is equipped with rectangular array (5), upper and lower two groups of rectangular arrays (5) are symmetrical above and below, idol is collectively formed
Pole subarray (19).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811420295.2A CN109546348B (en) | 2018-11-26 | 2018-11-26 | Novel miniaturized broadband SW-SIW horn antenna and design method thereof |
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| CN201811420295.2A CN109546348B (en) | 2018-11-26 | 2018-11-26 | Novel miniaturized broadband SW-SIW horn antenna and design method thereof |
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| CN109546348A true CN109546348A (en) | 2019-03-29 |
| CN109546348B CN109546348B (en) | 2020-08-25 |
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Cited By (5)
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| CN111082228A (en) * | 2020-01-02 | 2020-04-28 | 西安电子科技大学 | Slow wave substrate integrated waveguide H-plane horn antenna for millimeter wave communication system |
| CN111129724A (en) * | 2019-12-03 | 2020-05-08 | 西安电子科技大学 | H-plane horn antenna, radar and communication system with miniaturized loading slow-wave structure |
| CN113328252A (en) * | 2021-05-31 | 2021-08-31 | 贵州大学 | Method for generating orbital angular momentum vortex beams on cylindrical surface array and conical surface array |
| CN113922079A (en) * | 2021-11-19 | 2022-01-11 | 南京邮电大学 | Novel H face SIW horn antenna based on super surface unit |
| CN114725658A (en) * | 2022-04-14 | 2022-07-08 | 西华大学 | Slow wave medium integrated filter antenna fused with defect structure and design method thereof |
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|---|---|---|---|---|
| CN111129724A (en) * | 2019-12-03 | 2020-05-08 | 西安电子科技大学 | H-plane horn antenna, radar and communication system with miniaturized loading slow-wave structure |
| CN111129724B (en) * | 2019-12-03 | 2021-09-28 | 西安电子科技大学 | H-plane horn antenna, radar and communication system with miniaturized loading slow-wave structure |
| CN111082228A (en) * | 2020-01-02 | 2020-04-28 | 西安电子科技大学 | Slow wave substrate integrated waveguide H-plane horn antenna for millimeter wave communication system |
| CN111082228B (en) * | 2020-01-02 | 2020-12-22 | 西安电子科技大学 | Slow wave substrate integrated waveguide H-plane horn antenna for millimeter wave communication system |
| CN113328252A (en) * | 2021-05-31 | 2021-08-31 | 贵州大学 | Method for generating orbital angular momentum vortex beams on cylindrical surface array and conical surface array |
| CN113328252B (en) * | 2021-05-31 | 2023-05-16 | 贵州大学 | Method for generating orbital angular momentum vortex beam on cylindrical surface array and conical surface array |
| CN113922079A (en) * | 2021-11-19 | 2022-01-11 | 南京邮电大学 | Novel H face SIW horn antenna based on super surface unit |
| WO2023087984A1 (en) * | 2021-11-19 | 2023-05-25 | 南京邮电大学 | Novel metasurface unit-based h-plane siw horn antenna |
| CN113922079B (en) * | 2021-11-19 | 2023-09-26 | 南京邮电大学 | Novel H-plane SIW horn antenna based on super-surface unit |
| CN114725658A (en) * | 2022-04-14 | 2022-07-08 | 西华大学 | Slow wave medium integrated filter antenna fused with defect structure and design method thereof |
| CN114725658B (en) * | 2022-04-14 | 2023-06-06 | 西华大学 | Slow wave medium integrated filter antenna with integrated defect structure and design method thereof |
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