CN207490097U - Millimeter wave broadband Vivaldi array antennas based on SIW structures - Google Patents
Millimeter wave broadband Vivaldi array antennas based on SIW structures Download PDFInfo
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- CN207490097U CN207490097U CN201721563108.7U CN201721563108U CN207490097U CN 207490097 U CN207490097 U CN 207490097U CN 201721563108 U CN201721563108 U CN 201721563108U CN 207490097 U CN207490097 U CN 207490097U
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Abstract
The utility model is related to antenna technical fields, more particularly to a kind of millimeter wave broadband Vivaldi array antennas based on SIW structures, one point of eight power splitter and eight Vivaldi antenna elements including micro-strip SIW transformational structures, based on SIW, SIW transformational structures include microstrip line, micro-strip transition line and SIW span lines, one point of eight power splitter based on SIW includes metal layer and perceptual metal throuth hole, and Vivaldi antenna elements include Vivaldi radiating elements, the first capitate slot and the second capitate slot.The first capitate slot and the second capitate slot of the utility model cause the surface current path on Vivaldi antenna elements to be bent, and increase the effective length of radiating element, the impedance bandwidth of antenna has been expanded to low frequency direction；Meanwhile the extension of capitate slot inwardly avoids and the capacitive load of adjacent radiation unit is had an impact so that antenna finally obtains good bandwidth characteristic.
Description
Technical field
The utility model is related to antenna technical field more particularly to a kind of millimeter wave broadband Vivaldi based on SIW structures
Array antenna.
Background technology
With the progress of the 5th third-generation mobile communication technology (5G), millimeter wave frequency band has been obtained as new frequency spectrum resource
To higher and higher attention.Vivaldi antennas due to the advantages such as broadband, high-gain and low-cross polarization radar, communication with
And the fields such as electronic countermeasure play further important role.It is low section, easy of integration, low with the development of planar integrated circuit
The printing Vivaldi antenna array of cost becomes research hotspot instantly.Vivaldi array antennas are applied to millimeter wave frequency
Important in inhibiting among section.
In millimeter wave frequency band, traditional aerial array based on microstrip line construction, since its feeding network is in radiation
State not only generates larger transmission loss, can also generate undesirable radiation；And for the aerial array of strip lines configuration,
Though its transmission line is in masked state, feeding network is complex, needs multilayered structure, and processing cost is higher.Except this
Except, according to the radiation theory of Vivaldi antennas, Vivaldi antennas will expand its impedance bandwidth, it is necessary to increase radiating element
For exponential fade length to extend current path, the miniature requirement of this and antenna produces contradiction.
Substrate integration wave-guide (SIW) be have filter with low insertion loss, Low emissivity it is novel guided wave structure, by the metal on dielectric substrate
Change through-hole array be made, manufactured millimeter wave component have high q-factor, high power capacity and it is easy of integration the advantages of.
Utility model content
The utility model provides a kind of millimeter based on SIW structures that can be expanded the beamwidth of antenna and improve antenna gain
Wave broadband Vivaldi array antennas.
In order to realize the purpose of this utility model, used technical solution is：Millimeter wave broadband based on SIW structures
Vivaldi array antennas, one point of eight power splitter and eight Vivaldi antenna lists including micro-strip SIW transformational structures, based on SIW
The electromagnetic wave of feed-in is converted to the electromagnetic wave of SIW span lines by member, micro-strip SIW transformational structures, one based on SIW point, eight power splitter
By the electromagnetic wave uniform transmission of SIW span lines to eight Vivaldi antenna elements, SIW transformational structures include microstrip line, micro-strip gradually
Modified line and SIW span lines, microstrip line and SIW span lines are connected by micro-strip transition line, and one based on SIW point, eight power splitter includes
Metal layer and perceptual metal throuth hole, Vivaldi antenna elements include Vivaldi radiating elements, the first capitate slot and the second capitate
Slot, the first capitate slot and the second capitate slot are opened on Vivaldi radiating elements.
As the prioritization scheme of the utility model, Vivaldi antenna elements further include the first overlay region and the second overlay region,
The first overlay region is in the region of adjacent Vivaldi radiating elements front metal layer and metal layer on back overlapping, single Vivaldi spokes
The region for penetrating the overlapping of unit metal layer is the second overlay region.
As the prioritization scheme of the utility model, micro-strip SIW transformational structures with further including metal, are located at dielectric-slab to metal
The back side, microstrip line and micro-strip transition line be located at the front of dielectric-slab, and SIW span lines include SIW metal layers and SIW metals lead to
Hole, SIW metal layers are respectively overlay in the front and back of dielectric-slab, and SIW metal throuth holes are arranged in the both sides of SIW metal layers.
As the prioritization scheme of the utility model, the thickness of dielectric-slab is 0.254mm.
The utility model has positive effect：1) the utility model can cover 38.4-45.6GHz frequency ranges, Vivaldi
Antenna element has an advantage of high-gain in itself, the utility model using eight Vivaldi antenna elements form arrays be even more into
One step improves the gain of antenna, while reduces E surface wave beam widths；
2) the adjacent Vivaldi radiating elements front metal layer of the utility model and the first weight of region of metal layer on back overlapping
Folded area and the second overlay region of region of single Vivaldi radiating elements metal layer overlapping, the first overlay region plays capacitive load
Effect, change the input reactance of antenna, the beamwidth of antenna expanded to low frequency direction；Feeding network then can be achieved in second overlay region
Impedance matching effect between antenna element；
3) the first capitate slot of the utility model and the second capitate slot cause the surface current road on Vivaldi antenna elements
Diameter is bent, and increases the effective length of radiating element, the impedance bandwidth of antenna has been expanded to low frequency direction；Meanwhile capitate slot to
Interior extension, which avoids, has an impact the capacitive load of adjacent radiation unit so that it is special that antenna finally obtains good bandwidth
Property.
Description of the drawings
The utility model is described in further detail with reference to the accompanying drawings and detailed description.
Fig. 1 is the Facad structure figure of the utility model；
Fig. 2 is the backside structure figure of the utility model；
Fig. 3 is the structure chart of micro-strip SIW transformational structures；
Fig. 4 is the structure chart of one point of eight power splitter based on SIW；
Fig. 5 is the structure chart of Vivaldi antenna elements；
Fig. 6 is the return loss plot of the emulation and actual measurement of the utility model；
Fig. 7 is the interior gain diagram of band of the emulation and actual measurement of the utility model；
Fig. 8 is E faces (YOZ faces) directional diagram of the utility model emulation and actual measurement；
Fig. 9 is H faces (XOZ faces) directional diagram of the utility model emulation and actual measurement；
Wherein：1st, micro-strip SIW transformational structures, 2, one point of eight power splitter based on SIW, 3, Vivaldi antenna elements, 4, be situated between
Scutum, 11, microstrip line, 12, micro-strip transition line, 13, SIW span lines, 14, metal, 21, metal layer, 22, perceptual metal leads to
Hole, 31, Vivaldi radiating elements, the 32, first capitate slot, the 33, second capitate slot, 131, SIW metal layers, 132, SIW metals lead to
Hole, the 34, first overlay region, the 35, second overlay region.
Specific embodiment
As shown in Figs. 1-5, the utility model discloses a kind of millimeter wave broadband Vivaldi arrays days based on SIW structures
Line, one point of eight power splitter 2 and eight Vivaldi antenna elements 3 including micro-strip SIW transformational structures 1, based on SIW, micro-strip SIW
The electromagnetic wave of feed-in is converted to the electromagnetic wave of SIW span lines by transformational structure 1, and one based on SIW point, eight power splitter 2 passes SIW
Defeated section of electromagnetic wave uniform transmission to eight Vivaldi antenna elements 3, micro-strip SIW transformational structures 1 includes microstrip line 11, micro-strip
Transition line 12 and SIW span lines 13, microstrip line 11 and SIW span lines 13 are connected by micro-strip transition line 12, one based on SIW point
Eight power splitters 2 include metal layer 21 and perceptual metal throuth hole 22, Vivaldi antenna elements 3 include Vivaldi radiating elements 31,
First capitate slot 32 and the second capitate slot 33, the first capitate slot 32 and the second capitate slot 33 are opened in Vivaldi radiating elements
On 31.Wherein, the electromagnetic wave that micro-strip SIW transformational structures 1 will be converted to SIW span lines by the electromagnetic wave of 11 feed-in of microstrip line, it is micro-
The return loss from microstrip line 11 to SIW span lines 13 can be effectively reduced with transition line 12, improves energy transmission efficiency.
Vivaldi antenna elements 3 further include the first overlay region 34 and the second overlay region 35, adjacent Vivaldi radiating elements
The first overlay region 34 is in the region of 31 front metal layers and metal layer on back overlapping, single 31 metal layer of Vivaldi radiating elements
The region of overlapping is the second overlay region 35.
Micro-strip SIW transformational structures 1 with further including metal 14, metal ground 14 back sides for being located at dielectric-slab 4, microstrip line 11 and ladder
Shaped microstrip transition line 12 is located at the front of dielectric-slab 4, and SIW span lines 13 include SIW metal layers 131 and SIW metal throuth holes 132,
SIW metal layers 131 are respectively overlay in the front and back of dielectric-slab 4, and SIW metal throuth holes 132 are arranged in SIW metal layers 131
Both sides.Wherein, the thickness of dielectric-slab 4 is 0.254mm, and dielectric-slab 4 is Taconic TLY-5 dielectric-slabs.Microstrip line 11 is characteristic
Impedance is 50 ohm of microstrip line.Metal layer 21 is covered in the upper and lower surface of dielectric-slab 4.
One point of eight power splitter 2 based on SIW is by electromagnetic energy uniform transmission to eight Vivaldi antenna elements 3, perception gold
The metal layer 21 that category through-hole 22 and 4 both sides of dielectric-slab are covered forms waveguiding structure, makes electromagnetic energy can only be along channel transfer
Without generating loss；It, can be by adjusting based on SIW's to improve return loss and insertion loss of the power splitter in target band
The radius of perceptual metal throuth hole 22 at one point of eight 2 inside key position of power splitter is realized with position.First capitate slot, 32 He
Second capitate slot 33 causes the surface current path bending on Vivaldi antenna elements 3, increases effective length of radiating element
Degree, the impedance bandwidth of antenna has been expanded to low frequency direction.It is adjacent since 31 distal opening of Vivaldi radiating elements is wider
The region of 31 front metal layer of Vivaldi radiating elements and metal layer on back overlapping is the first overlay region 34, this is to a certain degree
On play the role of capacitive load, change the input reactance of antenna, expanded low frequency bandwidth；At the same time, it is single
The region of 31 metal layer of Vivaldi radiating elements overlapping is the second overlay region 35.The overlapping of this metal layer further improves
Impedance matching effect between antenna and feeding network.
Fig. 6 is the return loss plot of the emulation and actual measurement of the millimeter wave broadband Vivaldi array antennas based on SIW structures,
It can be seen that compared to simulation result, actual measurement return loss has certain bandwidth broadning, and with interior time to low frequency and high frequency treatment
Wave loss is respectively less than -10dB；Fig. 7 is in the band of the emulation of millimeter wave broadband Vivaldi array antennas and actual measurement based on SIW structures
Gain diagram, it can be seen that emulation and the actual measurement gain goodness of fit are higher, and difference is no more than 0.3dB at identical frequency point, and with frequency
Raising and it is overall in rising trend；Fig. 8 is the E of the emulation of millimeter wave broadband Vivaldi array antennas and actual measurement based on SIW structures
Face (YOZ faces) directional diagram, it can be seen that the E faces cross polar component of antenna is lower 15dB than main polarization component, meets answering for system
Use demand；Fig. 9 is H faces (XOZ faces) direction of the emulation of millimeter wave broadband Vivaldi array antennas and actual measurement based on SIW structures
Figure, it can be seen that the H faces cross polar component of antenna is lower 12dB than main polarization component, meets application demand.
Particular embodiments described above has carried out into one the purpose of this utility model, technical solution and advantageous effect
Step is described in detail, it should be understood that the foregoing is merely specific embodiment of the utility model, is not limited to this
Utility model, within the spirit and principle of the utility model, any modification, equivalent substitution, improvement and etc. done should all wrap
Containing being within the protection scope of the utility model.
Claims (4)
1. the millimeter wave broadband Vivaldi array antennas based on SIW structures, it is characterised in that：Including micro-strip SIW transformational structures
(1), one point of eight power splitter (2) based on SIW and eight Vivaldi antenna elements (3), micro-strip SIW transformational structures (1) are by feed-in
Electromagnetic wave be converted to the electromagnetic waves of SIW span lines, one point of eight power splitter (2) based on SIW is equal by the electromagnetic wave of SIW span lines
It is even to be transmitted to eight Vivaldi antenna elements (3), the micro-strip SIW transformational structures (1) including microstrip line (11), micro-strip gradually
Modified line (12) and SIW span lines (13), microstrip line (11) and SIW span lines (13) are connected by micro-strip transition line (12), are based on
One point of eight power splitter (2) of SIW includes metal layer (21) and perceptual metal throuth hole (22), the Vivaldi antenna elements (3)
Including Vivaldi radiating elements (31), the first capitate slot (32) and the second capitate slot (33), the first capitate slot (32) and
Second capitate slot (33) is opened on Vivaldi radiating elements (31).
2. the millimeter wave broadband Vivaldi array antennas according to claim 1 based on SIW structures, it is characterised in that：Institute
The Vivaldi antenna elements (3) stated further include the first overlay region (34) and the second overlay region (35), and adjacent Vivaldi radiation is single
The region of first (31) front metal layer and metal layer on back overlapping is the first overlay region (34), single Vivaldi radiating elements
(31) region of metal layer overlapping is the second overlay region (35).
3. the millimeter wave broadband Vivaldi array antennas according to claim 1 or 2 based on SIW structures, feature exist
In：The micro-strip SIW transformational structures (1) with further including metal (14), the metal (14) positioned at dielectric-slab (4) the back of the body
Face, the microstrip line (11) and micro-strip transition line (12) are positioned at the front of dielectric-slab (4), the SIW span lines (13) packet
SIW metal layers (131) and SIW metal throuth holes (132) are included, the SIW metal layers (131) are respectively overlay in dielectric-slab (4)
Front and back, the SIW metal throuth holes (132) are arranged in the both sides of SIW metal layers (131).
4. the millimeter wave broadband Vivaldi array antennas according to claim 3 based on SIW structures, it is characterised in that：It is situated between
The thickness of scutum (4) is 0.254mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721563108.7U CN207490097U (en) | 2017-11-21 | 2017-11-21 | Millimeter wave broadband Vivaldi array antennas based on SIW structures |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721563108.7U CN207490097U (en) | 2017-11-21 | 2017-11-21 | Millimeter wave broadband Vivaldi array antennas based on SIW structures |
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| Publication Number | Publication Date |
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| CN207490097U true CN207490097U (en) | 2018-06-12 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107845858A (en) * | 2017-11-21 | 2018-03-27 | 南京濠暻通讯科技有限公司 | Millimeter wave broadband Vivaldi array antennas based on SIW structures |
| CN112582808A (en) * | 2020-11-13 | 2021-03-30 | 华南理工大学 | Broadband butterfly patch antenna array suitable for millimeter wave 5G communication |
| CN113300065A (en) * | 2021-05-25 | 2021-08-24 | 南京邮电大学 | Mixed mode band-pass filter based on triangular substrate integrated waveguide |
-
2017
- 2017-11-21 CN CN201721563108.7U patent/CN207490097U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107845858A (en) * | 2017-11-21 | 2018-03-27 | 南京濠暻通讯科技有限公司 | Millimeter wave broadband Vivaldi array antennas based on SIW structures |
| CN112582808A (en) * | 2020-11-13 | 2021-03-30 | 华南理工大学 | Broadband butterfly patch antenna array suitable for millimeter wave 5G communication |
| CN113300065A (en) * | 2021-05-25 | 2021-08-24 | 南京邮电大学 | Mixed mode band-pass filter based on triangular substrate integrated waveguide |
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