CN208423183U - Sidelobe gap standing-wave array based on gap waveguide - Google Patents
Sidelobe gap standing-wave array based on gap waveguide Download PDFInfo
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- CN208423183U CN208423183U CN201820689937.8U CN201820689937U CN208423183U CN 208423183 U CN208423183 U CN 208423183U CN 201820689937 U CN201820689937 U CN 201820689937U CN 208423183 U CN208423183 U CN 208423183U
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Abstract
The utility model discloses a kind of Sidelobe gap standing-wave array based on gap waveguide, two pieces of metal plates including groove profile gap waveguide and its vertical upper and lower surface.The groove profile gap waveguide by open apertured upper layer metal plate, intermediate air dielectric layer and lower metal board group at, wherein two and present between groove profile gap waveguide and groove profile gap waveguide two sides be microband printing periodic structure.Sidelobe gap standing-wave array of the utility model based on gap waveguide, has many advantages, such as Sidelobe, high efficiency, low-loss, excellent radiation characteristic, can be suitable for the different-wavebands such as microwave and millimeter wave by the scaling of structural parameters.
Description
Technical field
The utility model design belongs to Waveguide slot antenna array design, and the inverted triangle for being based particularly on microband printing is periodical
The gap waveguide parallel-fed array of structure.
Background technique
Gap waveguide has obtained higher and higher attention in Antenna Design field since 2009 propose.Conventional gap
Waveguide due to being propagated in the air gap, compared to transmit in the medium SIW structure and conventional microstrip, strip lines configuration,
Its loss is relatively low, and conventional gap waveguide does not need its high electrical connection as conventional waveguide due to itself structure
Property, therefore process and assembly cost is lower, each electron-like and the communication system of being content with very little minimize component, light weight and
Requirement easy of integration.But conventional gap waveguide is placed in one since periodic structure is oversized, by feeding network and radiating slot
Layer can only place row's periodic structure when realizing and presenting structure, and coupling amount increases, and influence antenna performance.
(P.S.Kildal, E.Alfonso, A.Valero-Nogueira and the E. Rajo- of document 1 of the prior art
Iglesias,"Local Metamaterial-Based Waveguides in Gaps Between Parallel Metal
Plates,"in IEEE Antennas and Wireless Propagation Letters,vol.8,no.,pp.84-87,
2009.) gap waveguide this new structure is proposed to compare with other transmission structures, gap waveguide has a broadband, low-loss,
It is highly integrated, the advantages such as it is simple to manufacture.Gap waveguide and conventional waveguide leaky antenna are combined, not only split with conventional waveguide
The shortcomings that stitching the advantage of antenna, and conventional waveguide leaky antenna can be overcome to process and assemble aspect, a kind of new approaches of can yet be regarded as.
Document 2 (the S.I.Shams and A.A.Kishk, " Printed Texture With of the prior art
Triangle Flat Pins for Bandwidth Enhancement of the Ridge Gap Waveguide,"in
IEEE Transactions on Microwave Theory and Techniques,vol.65,no.6,pp.2093-
2100, June 2017.) the inverted triangle periodic structure based on microband printing is proposed, compared to traditional square pin, printing
The form of micro-strip greatly reduces the distance of two rows of periodic structures.
Document 3 (M.Ramezan, A.Khaleghi, " the 2D Slot Array Antenna in Ridge of the prior art
Gap Waveguide Technology,”8th European Conference on Antennas and Propagation
(EuCAP), 2014) by and present and place row's metal pin among ridge gap waveguide, realize the gap of constant amplitude weighting
Antenna, but the method for realizing Sidelobe is not proposed.
From the foregoing, it will be observed that although the prior art realizes the design of the constant amplitude weighted antenna based on gap waveguide, but above-mentioned existing
The method of the shunt-fed antenna drop minor lobe based on gap waveguide is not referred in design and existing disclosed patent.
In addition, the advantage of conventional waveguide is that loss is low, power capacity is big, but a disadvantage is that stereochemical structure integration is poor,
When rising to high band, waveguide dimensions can become smaller, and improve difficulty of processing, and installing is also a problem.
Utility model content
The gap waveguide for the inverted triangle periodic structure based on microband printing that the purpose of this utility model is to provide a kind of
Sidelobe gap standing-wave array, be suitable for microwave and millimeter wave band.
The Sidelobe gap standing-wave array of the gap waveguide of inverted triangle periodic structure based on microband printing, the Sidelobe
Gap standing-wave array includes upper layer metal plate, intermediate air dielectric layer and lower metal plate, in which:
The upper layer metal plate and lower metal plate are parallel to each other, and are configured to intermediate air layer between the two；The upper layer
The gap of different offsets and resonance length is provided on metal plate；
The lower metal plate structure has groove profile gap waveguide, is arranged on the lengthwise extending direction of lower metal plate multiple rows of
The printed microstrip periodic structure being parallel to each other, every two rows print cycle property structure constitute a waveguide antenna configurations and form electromagnetic wave
Transmission directional guide, printed microstrip periodic structure therein by be vertically attached on lower metal plate pcb board, one connect
Ground microstrip line and inverted triangle structure composition, inverted triangle structural printing are oppositely arranged on pcb board on the surface of pcb board,
The connection of lower metal plate and pcb board is arranged in the three-legged structure setting one by one opposite on two rows of pcb board surfaces, ground connection microstrip line
Position, and be electrically connected with the lower end of inverted triangle structure；
The metal pin positioned at bottom endwall is also set up in the one end of the lower metal plate, metal pin is as short circuit
Wall, in processing, metal pin and lower metal plate are integrated construction.
Compared with prior art, remarkable advantage is the utility model:
1) Sidelobe gap standing-wave array of the utility model based on gap waveguide, tradition side pin is since size is due to size
It is excessive, and present and can only put next row pin between waveguide, and by using the inverted triangle periodic structure of microband printing, it is substantially reduced
The distance of two rows of periodic structures, can and present put down between slotted waveguide gap it is two rows of periodically, substantially increase simultaneously
The degree of coupling between groove profile gap waveguide is presented, produces and applies convenient for large-scale processing；
2) the utility model proposes the Sidelobe gap standing-wave array based on gap waveguide, made of GWG, GWG structure
High frequency can be applied to up, solve the requirement in high frequency processing for electrical connection of conventional waveguide, the knot of the utility model
When structure is processed upper layer metal plate and lower layer slotted waveguide are to separate, on high frequency using more excellent, particularly to 30G with
On.The use of GWG structure places periodic structure in two sides to prevent the leakage of wave, and metal pin is exactly one of period
Property structure, short-circuit wall processed together in processing with lower metal plate, and molding is to be integrally designed, raw convenient for large-scale processing
It produces.
The utility model is described in further detail with reference to the accompanying drawing.
Detailed description of the invention
Figure 1A -1C is the structure chart of Sidelobe gap standing-wave array of the utility model based on gap waveguide, and wherein Figure 1A is
Three-view diagram, 1B are top view, and 1C is hierarchical diagram.
Fig. 2 is the partial side of the groove profile gap waveguide of Sidelobe gap standing-wave array of the utility model based on gap waveguide
Figure.
Fig. 3 is reflection coefficient and the gain curve signal of Sidelobe gap standing-wave array of the utility model based on gap waveguide
Figure.
Fig. 4 is radiation of the utility model based on the Sidelobe gap standing-wave array of gap waveguide in centre frequency 16GHz
Directional diagram.
Specific embodiment
In conjunction with Figure 1A -1C, a kind of Sidelobe gap standing-wave array based on gap waveguide, including upper layer metal plate 1, intermediate sky
Gas medium layer 2 and lower metal plate 3, the upper layer metal plate 1 and lower metal plate 3 are parallel to each other, and setting is intermediate therebetween
Air dielectric layer 2 is provided with the gap of different offsets and resonance length at the middle and upper levels on metal plate 1.
In conjunction with 1C, Fig. 2, the printed microstrip periodic structure being parallel to each other is arranged in lower metal plate 3 in their extension direction,
Here 4, ground connection microstrip lines 5 of pcb board and inverted triangle structure 6 constitute a printed microstrip periodic structure, along PCB
The longitudinally of plate extends, and cystosepiment is added between two rows of periodic structures to fix, end metal pin 7 used as
Short-circuit wall.
The Sidelobe gap standing-wave array of the utility model is shunt-fed antenna array, forms periodical knot using microband printing
Structure, and be based on GWG structure fabrication, can prevent the leakage of wave, and can and present placement two rows pin between battle array.Traditional GWG knot
Structure is revealed in order to prevent, and surrounding is all needs two rows pin, but due to the limitation of the traditional side GWG pin structure size, and presents waveguide
Next row pin can only be put, in this case can make and the coupling amount for presenting waveguide increases, so we are in the present invention to wave
Guide structure and pin around is optimized, with microband printing type, in this way and presents and can use two rows pin between battle array, overcome biography
The defect of the GWG structure fabrication of system.
In conjunction with shown in Figure 1A -1C and Fig. 2, in specific embodiment, lower metal plate 3 is configured with multiple be parallel to each other
And it is spaced apart the groove profile gap waveguide of design.Multiple rows of print being parallel to each other is set on the lengthwise extending direction of lower metal plate 3
Brush micro-strip periodic structure, the transmission orientation that every two rows print cycle property structure constitutes waveguide antenna configurations formation electromagnetic wave are drawn
It leads, i.e. groove profile gap waveguide.
Wherein, aforementioned printed microstrip periodic structure is made of 4, ground connection microstrip lines 5 of pcb board and inverted triangle structure 6,
Pcb board 4 is vertically attached on lower metal plate 3, and inverted triangle structure 6 is printed on the surface of pcb board, and is oppositely arranged on PCB
On plate, the one by one setting opposite on two rows of 4 surfaces of pcb board of inverted triangle structure 6.
The link position of lower metal plate 3 Yu pcb board 4 is arranged in ground connection microstrip line 5, and electric with the lower end of inverted triangle structure
Connection.
The metal pin 7 positioned at bottom endwall is also set up in the one end of lower metal plate 3, metal pin 7 is as short circuit
Wall, in processing, metal pin 7 and lower metal plate 3 are integrated construction.
In conjunction with shown in Fig. 1 C, Fig. 2, the size of the intermediate air dielectric layer 2 is less than the design wavelength lambda of a quarter.
Preferably, inverted triangle structure 6 and metal pin 7 are all periodic structure, periodically the height of height and air layer
Spend identical, and the sum of height for being grounded microstrip line 5 and inverted triangle structure 6 is identical as the height of metal pin 7.
The Sidelobe gap standing-wave array of gap waveguide, overall antenna length L=287mm, gap waveguide groove width W=12.5mm,
2 height h of intermediate air dielectric layer1=0.6mm, 5 thickness ds of ground connection microstrip line=0.2mm of periodic structure, inverted triangle structure 6
Bottom width is a=0.2mm, upper bottom width b=2.5mm, period p1=5.8mm.
Metal column side length t=3mm in end metal pin 7, period p2=5.8mm, height h2=0.6mm, a groove profile
The corresponding end metal pin of gap waveguide is 2 × 2.
The upper layer metal plate [1] is provided with 20 gaps, gap width w=0.8mm, different offsets and resonance altogether
Taylor's weighted value of the gap satisfaction -30dB of length.
More further be described in detail is carried out to the utility model below with reference to embodiment.
Embodiment 1
Integrated antenna is having a size of 287mm × 50mm × 5.9mm.
In conjunction with diagram, the utility model proposes the Sidelobe gap standing-wave array based on gap waveguide, belong to shunt-fed antenna
Battle array, is applied especially to high frequency, described in conjunction with diagram, including upper layer metal plate 1, intermediate air dielectric layer 2 and lower metal plate 3
Upper layer metal plate 1 and lower metal plate 3 are parallel to each other, and intermediate air dielectric layer 2 is arranged therebetween.
Its gap for being provided with different offsets and resonance length on metal plate at the middle and upper levels.
Overall antenna length is corresponding with the size of metal plate, L=287mm.Lower metal plate is arranged mutually in their extension direction
Parallel printed microstrip periodic structure, 4, ground connection microstrip lines 5 of pcb board and inverted triangle structure 6 constitute periodicity here
Cystosepiment is added between two rows of periodic structures to fix for structure.Gap waveguide groove width W=12.5mm, intermediate air dielectric layer 2
Height h1=0.6mm, 5 thickness ds of ground connection microstrip line=0.2mm of periodic structure, inverted triangle structure 6 go to the bottom width as a=
0.2mm, upper bottom width b=2.5mm, period p1=5.8mm.End metal pin 7 is used as short-circuit wall, metal column side length t=
3mm, period p2=5.8mm, height h2=0.6mm, the corresponding end metal pin of a groove profile gap waveguide are 2 × 2.
In conjunction with Fig. 2, the Sidelobe gap standing-wave array based on gap waveguide of the utility model, reflection coefficient is lower than -10dB
Working band be 15.7-16.2GHz, relative bandwidth 3.1%.
In conjunction with Fig. 3, due to the utility model and present and used the pin of two rows of microband printings between waveguide, lead to two and present wave
Isolation between leading greatly improves, and realizes low sidelobe antenna.Sidelobe gap standing-wave array work based on gap waveguide exists
The face E and the face H normalized radiation pattern when 16GHz have good symmetry, and antenna gain is 20.6dBi, and minor lobe is better than
25dBi, performance are significantly better than the waveguide of existing design.
Although the utility model has been disclosed with preferred embodiment as above, so it is not intended to limit the utility model.This reality
It is without departing from the spirit and scope of the utility model, each when that can make with novel those of ordinary skill in the art
Kind changes and retouches.Therefore, the protection scope of the utility model is subject to view those as defined in claim.
Claims (7)
1. a kind of Sidelobe gap standing-wave array based on gap waveguide, which is characterized in that Sidelobe gap standing-wave array includes
Upper layer metal plate [1], intermediate air dielectric layer [2] and lower metal plate [3], in which:
The upper layer metal plate [1] and lower metal plate [3] are parallel to each other, and are configured to intermediate air layer [2] between the two；It is described
The gap of different offsets and resonance length is provided on upper layer metal plate [1]；
The lower metal plate [3] is configured with groove profile gap waveguide, is arranged on the lengthwise extending direction of lower metal plate [3] more
The printed microstrip periodic structure being parallel to each other is arranged, every two rows print cycle property structure constitutes a waveguide antenna configurations and forms electromagnetism
The transmission directional guide of wave, printed microstrip periodic structure therein is by the pcb board that is vertically attached on lower metal plate [3]
[4], a ground connection microstrip line [5] and inverted triangle structure [6] composition, inverted triangle structure [6] are printed on the surface of pcb board, and
It is oppositely arranged on pcb board, inverted triangle structure [6] the one by one setting opposite on two rows of pcb boards [4] surface, is grounded microstrip line [5]
Link position in lower metal plate [3] and pcb board [4] is set, and is electrically connected with the lower end of inverted triangle structure；
The metal pin [7] positioned at bottom endwall is also set up in the one end of the lower metal plate [3], metal pin [7] is made
For short-circuit wall, in processing, metal pin [7] and lower metal plate [3] are integrated construction.
2. the Sidelobe gap standing-wave array based on gap waveguide according to claim 1, it is characterised in that, intermediate air medium
The size of layer [2] is less than a quarter design wavelength.
3. the Sidelobe gap standing-wave array based on gap waveguide according to claim 1, which is characterized in that inverted triangle structure
It [6] is all periodic structure with metal pin [7], periodically height is identical as the height of air layer, and is grounded microstrip line [5]
And the sum of height of inverted triangle structure [6] is identical as the height of metal pin [7].
4. the Sidelobe gap standing-wave array based on gap waveguide according to claim 1, which is characterized in that periodic structure
Pcb board [4] selects 5880 medium plate of Rogers RT/duroid, and overall dimensions are the rectangle of 287mm × 4.9mm, is situated between
Electric constant is 2.2, loss tangent angle σ=0.0009 tan, with a thickness of 0.254mm.
5. the Sidelobe gap standing-wave array based on gap waveguide according to claim 1, which is characterized in that overall antenna length L=
287mm, gap waveguide groove width W=12.5mm, intermediate air dielectric layer [2] height h1The ground connection of=0.6mm, periodic structure are micro-
Band line [5] thickness d=0.2mm, inverted triangle structure [6] bottom width is a=0.2mm, upper bottom width b=2.5mm, period p1=
5.8mm。
6. the Sidelobe gap standing-wave array based on gap waveguide according to claim 1, which is characterized in that end metal pin
[7] the metal column side length t=3mm in, period p2=5.8mm, height h2=0.6mm, the corresponding end of a groove profile gap waveguide
Metal pin is 2 × 2.
7. the Sidelobe gap standing-wave array based on gap waveguide according to claim 1, which is characterized in that upper layer metal plate
[1] it is provided with 20 gaps altogether, gap width w=0.8mm, the gap satisfaction -30dB's of different offsets and resonance length
Taylor's weighted value.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820689937.8U CN208423183U (en) | 2018-05-10 | 2018-05-10 | Sidelobe gap standing-wave array based on gap waveguide |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108448260A (en) * | 2018-05-10 | 2018-08-24 | 南京鹰目电子科技有限公司 | Sidelobe gap standing-wave array based on gap waveguide |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108448260A (en) * | 2018-05-10 | 2018-08-24 | 南京鹰目电子科技有限公司 | Sidelobe gap standing-wave array based on gap waveguide |
| CN108448260B (en) * | 2018-05-10 | 2023-09-15 | 南京鹰目电子科技有限公司 | Low sidelobe gap standing wave array based on gap waveguide |
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