CN208862173U - Double frequency-band millimeter wave antenna - Google Patents
Double frequency-band millimeter wave antenna Download PDFInfo
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- CN208862173U CN208862173U CN201821775726.2U CN201821775726U CN208862173U CN 208862173 U CN208862173 U CN 208862173U CN 201821775726 U CN201821775726 U CN 201821775726U CN 208862173 U CN208862173 U CN 208862173U
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Abstract
The utility model discloses a kind of double frequency-band millimeter wave antennas, including five-layer structure from top to bottom: a pair offers the first metal patch of U-lag；The first metal band of a pair arranged side by side；Second metal patch is connect via the first metal throuth hole with the first metal band；Offer the metal the earth an of through-hole；Second metal band is connect via the second metal throuth hole with the second metal patch；First metal band, the second metal patch and the first metal throuth hole form folded form step impedance resonator, second metal band feeds signal resonator by the second metal throuth hole, the first metal patch is coupled a signal to again, forming two tools, there are two the working bands of reflection zero, form certain bandwidth, and the antenna pattern consistency on two frequency bands is preferable, resonator and cutting metal patch are in the same side of metal the earth, it is effectively saved the wiring space of radio frequency system, is conducive to the integrated of antenna and radio frequency system.
Description
Technical field
The utility model relates to field of microwave communication more particularly to a kind of double frequency-band millimeter wave antennas.
Background technique
With the development of wireless communication technique, message transmission rate is higher and higher, therefore it is required that promoting working frequency, at present
Working frequency range can be promoted to millimeter wave frequency band, such as the 5th third-generation mobile communication supports working frequency 26GHz, 40GHz and application
In the 60GHz wireless system of internal home network.Meanwhile millimeter wave dual-band antenna has obviously compared to single-band antenna or wide frequency antenna
The advantages of.Relative to the millimeter wave antenna of two single frequency operations, dual-band antenna can be reduced antenna number and overall bore, and can subtract
Few radio-frequency channel, therefore it is beneficial to reduce system dimension, complexity and costs.Compared with wide frequency antenna, double frequency band aerial is to two
Signal among a frequency range has certain inhibiting effect, effectively improves out of band signal and inhibits, reduce clutter interference, improve communication
Quality.Therefore, double frequency-band millimeter wave antenna technology is for wireless communication system towards small size, low cost and high performance direction
Development plays a significant role, and is an important trend of the following millimeter-wave communication system antenna technology development.
There are many double frequency-band millimeter wave antenna technologies at present.One is using super skin antenna designing technique, on substrate
Various sizes of rectangular patch is arranged, so that it is possessed the characteristic of double frequency-band, but excessive using the antenna size of the Technology design, nothing
Method group battle array becomes phased array.Another kind is by etching L-shaped groove and cross recess realization in rectangular patch, and two L-shaped groove length are not
Together, therefore constitute dual band slot antenna, but the usual narrower bandwidth of such antenna, and for circular polarization radiation rather than linear polarization spoke
It penetrates.In addition to this, there are also one is an inverted U-shape slot is etched on single rectangular patch, U-lag makes rectangular patch resonance exist
Two different frequency bands, but the antenna pattern of design directional diagram consistency in two frequency ranges is poor, and high band direction
Figure divides.
Utility model content
The technical problem to be solved by the present invention is to exist respectively not for existing double frequency-band millimeter wave antenna
With disadvantage, for example use super skin antenna designing technique, can obtain good dual-band characteristic and radiation characteristic, but its
Antenna size is excessive, is unfavorable for array and phased array；Double frequency-band is realized by etching L-shaped groove and cross recess on rectangular patch
Antenna, bandwidth is too narrow, and is circular polarization radiation, rather than linear polarization；U-lag is etched on single rectangular patch, there are two
The problems such as directional diagram consistency is poor in frequency range, high frequency direction figure divides, provides a kind of double frequency-band millimeter wave antenna.
The technical scheme adopted by the utility model to solve the technical problem is as follows: a kind of double frequency-band millimeter wave antenna is constructed,
Include:
It is set to the first layer structure of first layer medium substrate upper surface, is pasted including the first metal of a pair arranged side by side
Piece, first metal patch offer U-lag；
The second layer structure being set between first layer medium substrate lower surface and second layer medium substrate upper surface, including
The first metal band of a pair arranged side by side corresponding with the pair of first metal patch；
The third layer structure being set between second layer medium substrate lower surface and third layer medium substrate upper surface, including
Second metal patch, the second metal patch is via the first metal throuth hole of a pair and described one for passing through the second layer medium substrate
First metal band is connected；
The four-layer structure being set between third layer medium substrate lower surface and the 4th layer of medium substrate upper surface, including
Offer the metal the earth an of through-hole；
It is set to the layer 5 structure of the 4th layer of medium substrate lower surface, including the second metal band, second metal
Band is connect via the second metal throuth hole with the second metal patch, and the second metal throuth hole sequentially passes through third layer medium substrate, leads to
Hole, the 4th layer of medium substrate；
Wherein, first metal band, the second metal patch and the first metal throuth hole form folded form Stepped Impedance
Resonator, the second metal band are used to by the second metal throuth hole feed signal the folded form step impedance resonator, then
Couple a signal to first metal patch.
In the utility model embodiment, the flat shape of second metal patch is rectangle, the pair of first gold medal
Belong to the plane of symmetry mirror settings of patch, a pair of first metal band respectively about the left and right sides of second metal patch, and
The plane of symmetry pair of each first metal patch, the first metal band respectively about the front and back side of second metal patch
Claim, and the length direction of the length direction of first metal patch and the second metal band is pasted each parallel to second metal
The plane of symmetry of the left and right sides of piece, the left and right sides of the length direction of first metal band perpendicular to second metal patch
The plane of symmetry.
In the utility model embodiment, the left and right close to second metal patch of the pair of first metal band
The center of the side of the plane of symmetry of side connects second metal patch or so via the first metal throuth hole being vertically arranged respectively
The center of two sides.
In the utility model embodiment, the first end of second metal band is located at the 4th layer of medium substrate lower surface
Edge, the second end of second metal band connect via the second metal throuth hole being vertically arranged with the second metal patch,
And the second end of second metal band deviates the center of second metal patch.
In the utility model embodiment, the opening face of two U-lags on the pair of first metal patch
Setting.
In the utility model embodiment, through-hole is circular through hole.
The double frequency-band millimeter wave antenna of the utility model has the advantages that step impedance resonator and a pair of of quarter
The metal patch of slot is coupled, and is formed two tools there are two the working band of reflection zero, is formed certain bandwidth, and two
Antenna pattern consistency on frequency band is preferable, and folded form step impedance resonator is convenient for regulation step impedance resonator and metal
Signal coupling between patch, step impedance resonator and a pair of of cutting metal patch are effectively saved in the same side of metal the earth
The about wiring space of radio frequency system is conducive to the integrated of antenna and radio frequency system, and the antenna of the utility model can be used as
Antenna element is for constituting dual-band antenna array, double frequency phased array.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is the embodiments of the present invention, for those of ordinary skill in the art, without creative efforts, also
Other attached drawings can be obtained according to the attached drawing of offer:
Fig. 1 is the cross-sectional view of the utility model double frequency-band millimeter wave antenna；
Fig. 2 is the schematic diagram of first layer structure；
Fig. 3 is the schematic diagram of second layer structure；
Fig. 4 is the schematic diagram of third layer structure；
Fig. 5 is the schematic diagram of four-layer structure；
Fig. 6 is the schematic diagram of layer 5 structure；
Fig. 7 is emulation matching and the gain curve figure of antenna；
Fig. 8 is the emulation directional diagram of antenna.
Specific embodiment
The utility model is more fully retouched below with reference to relevant drawings for the ease of understanding the utility model,
It states.The exemplary embodiments of the utility model are given in attached drawing.But the utility model can come in many different forms in fact
It is existing, however it is not limited to embodiment described herein.On the contrary, purpose of providing these embodiments is makes public affairs to the utility model
It is more thorough and comprehensive to open content.It should be understood that the specific features in the utility model embodiment and embodiment are to the application skill
The detailed description of art scheme, rather than the restriction to technical scheme, in the absence of conflict, the utility model are real
The technical characteristic applied in example and embodiment can be combined with each other.
It should be noted that term as used herein "vertical", "horizontal", "left" and "right" and similar table
It states for illustrative purposes only.Unless otherwise defined, all technical and scientific terms used herein and belong to this reality
It is identical with the novel normally understood meaning of those skilled in the art.Made in the specification of the utility model herein
Term, which is only for the purpose of describing specific embodiments, to be not intended to limit the utility model.
" first ", " second " used in this specification etc. includes that the term of ordinal number can be used for illustrating various constituent elements,
But these constituent elements are not limited by these terms.It is only that using the purpose of these terms and distinguishes a constituent element
In other constituent elements.For example, the first constituent element can be named under the premise of not departing from the interest field of the utility model
For the second constituent element, similarly, the second constituent element can also be named as the first constituent element.
With reference to Fig. 1, double frequency-band millimeter wave antenna provided by the embodiment of the utility model include five layers of metallic circuit structure and
Four layers of medium substrate, this five layers of metallic circuit structures are respectively: be set to first layer structure 1 at the top of first layer medium substrate,
It is set to the second layer structure 2 between first layer medium substrate lower surface and second layer medium substrate upper surface, is set to second
Layer medium substrate lower surface and third layer medium substrate upper surface between third layer structure 3, be set to third layer medium substrate
Four-layer structure 4 between lower surface and the 4th layer of medium substrate upper surface is set to the 4th layer of medium substrate lower surface and
Layer 5 structure 5 between five layers of medium substrate upper surface, first to layer 5 medium substrate is the identical square of planar dimension
Shape, and project and be overlapped.
With reference to Fig. 2, in conjunction with Fig. 1, first layer structure 1, including the first metal patch of a pair 6 arranged side by side, described first
Metal patch 6 offers U-lag 7, the opening face setting of two U-lags 7 on the pair of first metal patch 6.
It is set between first layer medium substrate lower surface and second layer medium substrate upper surface with reference to Fig. 3 in conjunction with Fig. 1
Second layer structure 2, including the first metal band of a pair 8 arranged side by side corresponding with the pair of first metal patch 6, one
Spacing between a pair of first metal patch 6 is greater than to the spacing between the first metal band 8.
It is set between second layer medium substrate lower surface and third layer medium substrate upper surface with reference to Fig. 4 in conjunction with Fig. 1
Third layer structure 3, including the second metal patch 9, the second metal patch 9 is via a pair for passing through the second layer medium substrate
First metal throuth hole 10 is connect with the pair of first metal band 8；
It is set between third layer medium substrate lower surface and the 4th layer of medium substrate upper surface with reference to Fig. 5 in conjunction with Fig. 1
Four-layer structure 4, including offer a through-hole 11 metal the earth.Wherein, through-hole 11 is specially circular through hole.
The layer 5 structure 5 of the 4th layer of medium substrate lower surface, including the second metal are set in conjunction with Fig. 1 with reference to Fig. 6
Band 12, second metal band 12 are connect via the second metal throuth hole 13 with the second metal patch 9, the second metal throuth hole 13
Sequentially pass through third layer medium substrate, through-hole 11, the 4th layer of medium substrate.Second metal throuth hole 13 can be by metal copper post
Outer surface is formed.
Wherein, first metal band 8, the second metal patch 9 and the first metal throuth hole 10 form folded form step
Electric impedance resonator, the second metal band 12 are used for signal is humorous by the second metal throuth hole 13 folded form Stepped Impedance of feeding
Shake device, then couples a signal to first metal patch 6.
Specifically, the flat shape of second metal patch 9 is rectangle, the pair of first metal patch 6, Yi Dui
Plane of symmetry mirror settings of one metal band 8 respectively about the left and right sides of second metal patch 9, and each described first
Metal patch 6, the first metal band 8 are symmetrical and described respectively about the plane of symmetry of the front and back side of second metal patch 9
The length direction of the length direction of first metal patch 6 and the second metal band 12 is each parallel to second metal patch 9
The plane of symmetry of left and right sides, pair of the length direction of first metal band 8 perpendicular to the left and right sides of second metal patch 9
Title face.
More specifically, the plane of symmetry of the left and right sides close to second metal patch 9 of the pair of first metal band 8
The center of side connected in 9 left and right sides of the second metal patch via the first metal throuth hole 10 for being vertically arranged respectively
Heart position.The first end of second metal band 12 is located at the edge of the 4th layer of medium substrate lower surface, second metal
The second end of band 12 is connect via the second metal throuth hole 13 being vertically arranged with the second metal patch 9, and second metal
The second end of band 12 deviates the center of second metal patch 9.
The working principle of the utility model is as follows: the second metal band 12 is fed as microstrip feed line, passes through the second gold medal
Belong to through-hole 13 signal is fed the folded form being made of the first metal band 8, the second metal patch 9 and the first metal throuth hole 10
Step impedance resonator, step impedance resonator couple a signal to the first metal patch of a pair 6 of first layer structure 1, rank again
Jump electric impedance resonator is all worked in two frequency ranges of height in odd mould, and the step impedance resonator and a pair of folding carve U-lag
Metal patch is coupled in the same side of metal the earth, is mainly coupled a signal in low-frequency range step impedance resonator and is carved with U-shaped
The 6 peripheral structure part of metal patch of slot 7, mainly couples a signal in high band step impedance resonator and is carved with U-lag 7
6 intermediate structure part of metal patch, therefore two reflection zeros are all formd in two frequency ranges, form two linear polarization work
Frequency range.Antenna meets certain bandwidth, and directional diagram keeps preferable consistency in two frequency ranges.As it can be seen that compared to existing
Double frequency-band millimeter wave antenna technology, the utility model can be formed in lesser size two bandwidth it is moderate work frequency
Band, and the utility model is preferable in the antenna pattern consistency of two working bands, on high band antenna pattern regardless of
It splits.
For example, the matching response of the emulation of antenna and gain response are as shown in Figure 7 in a specific embodiment, it is seen that should
Case can work in 26GHz and 40GHz, and gain is all larger than 6.4dBi.The case is set forth in 26GHz and 40GHz in Fig. 8
The antenna pattern at place, specifically, the picture left above is the E surface radiation directional diagram of 26GHz, top right plot is the H surface radiation direction of 26GHz
Figure, lower-left figure is the E surface radiation directional diagram of 40GHz, and bottom-right graph is the H surface radiation directional diagram of 40GHz.It can be seen that the antenna is in low frequency
Section and the antenna pattern consistency of high band are preferable, and keep symmetry.The overall dimensions of the design case are 0.28 λ0×
0.22λ0×0.06λ0(@26GHz) is 3.4 using dielectric constant, the substrate that loss angle is 0.004.
To sum up, the effect of the utility model embodiment is:
1) step impedance resonator of odd mould two-frequency operation is coupled with the metal patch of a pair of of cutting, forms two tools
There are two the working bands of reflection zero, form certain bandwidth, and the antenna pattern consistency on two frequency bands is preferable.
2) step impedance resonator is folded, convenient for the signal between regulation step impedance resonator and metal patch
Coupling.
3) step impedance resonator and a pair of of cutting metal patch are effectively saved radio frequency system in the same side of metal the earth
The wiring space of system is conducive to the integrated of antenna and radio frequency system.
4) antenna of the utility model can be used as antenna element for constituting dual-band antenna array, double frequency phased array.
The embodiments of the present invention are described above in conjunction with attached drawing, but the utility model is not limited to
The specific embodiment stated, the above mentioned embodiment is only schematical, rather than restrictive, this field it is common
Technical staff is not departing from the utility model aims and scope of the claimed protection situation under the enlightenment of the utility model
Under, many forms can be also made, these are belonged within the protection of the utility model.
Claims (6)
1. a kind of double frequency-band millimeter wave antenna characterized by comprising
It is set to the first layer structure (1) of first layer medium substrate upper surface, including the first metal patch of a pair arranged side by side
(6), first metal patch (6) offers U-lag (7)；
The second layer structure (2) being set between first layer medium substrate lower surface and second layer medium substrate upper surface, including
The first metal band of a pair (8) arranged side by side corresponding with the pair of first metal patch (6)；
The third layer structure (3) being set between second layer medium substrate lower surface and third layer medium substrate upper surface, including
Second metal patch (9), the second metal patch (9) is via the first metal throuth hole of a pair for passing through the second layer medium substrate
(10) it is connect with the pair of first metal band (8)；
The four-layer structure (4) being set between third layer medium substrate lower surface and the 4th layer of medium substrate upper surface, including
Offer the metal the earth an of through-hole (11)；
It is set to the layer 5 structure (5) of the 4th layer of medium substrate lower surface, including the second metal band (12), second gold medal
Belong to band (12) to connect via the second metal throuth hole (13) with the second metal patch (9), the second metal throuth hole (13) sequentially passes through
Third layer medium substrate, through-hole (11), the 4th layer of medium substrate；
Wherein, first metal band (8), the second metal patch (9) and the first metal throuth hole (10) form folded form rank
Jump electric impedance resonator, and the second metal band (12) is used to by the second metal throuth hole (13) feed signal the folded form step
Electric impedance resonator, then couple a signal to first metal patch (6).
2. double frequency-band millimeter wave antenna according to claim 1, which is characterized in that second metal patch (9) is put down
Face shape is rectangle, and the pair of first metal patch (6), a pair of first metal band (8) are respectively about second gold medal
Belong to the plane of symmetry mirror settings of the left and right sides of patch (9), and each first metal patch (6), the first metal band (8) are
It is symmetrical respectively about the plane of symmetry of the front and back side of second metal patch (9), and the length side of first metal patch (6)
To the length direction with the second metal band (12) each parallel to the plane of symmetry of the left and right sides of second metal patch (9), institute
The length direction of the first metal band (8) is stated perpendicular to the plane of symmetry of the left and right sides of second metal patch (9).
3. double frequency-band millimeter wave antenna according to claim 2, which is characterized in that the pair of first metal band (8)
The left and right sides close to second metal patch (9) the plane of symmetry side center respectively via the be vertically arranged
One metal throuth hole (10) connects the center at left and right sides of the second metal patch (9).
4. double frequency-band millimeter wave antenna according to claim 2, which is characterized in that the of second metal band (12)
One end is located at the edge of the 4th layer of medium substrate lower surface, and the second end of second metal band (12) is via being vertically arranged
Second metal throuth hole (13) is connect with the second metal patch (9), and described in the second end deviation of second metal band (12)
The center of second metal patch (9).
5. double frequency-band millimeter wave antenna according to claim 2, which is characterized in that the pair of first metal patch (6)
On two U-lags (7) opening face setting.
6. double frequency-band millimeter wave antenna according to claim 1-5, which is characterized in that through-hole (11) is round logical
Hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821775726.2U CN208862173U (en) | 2018-10-31 | 2018-10-31 | Double frequency-band millimeter wave antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821775726.2U CN208862173U (en) | 2018-10-31 | 2018-10-31 | Double frequency-band millimeter wave antenna |
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| Publication Number | Publication Date |
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| CN208862173U true CN208862173U (en) | 2019-05-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821775726.2U Active CN208862173U (en) | 2018-10-31 | 2018-10-31 | Double frequency-band millimeter wave antenna |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109301472A (en) * | 2018-10-31 | 2019-02-01 | 南通至晟微电子技术有限公司 | Double frequency-band millimeter wave antenna |
| CN110277647A (en) * | 2019-06-05 | 2019-09-24 | 华南理工大学 | A kind of antenna for secret communication |
-
2018
- 2018-10-31 CN CN201821775726.2U patent/CN208862173U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109301472A (en) * | 2018-10-31 | 2019-02-01 | 南通至晟微电子技术有限公司 | Double frequency-band millimeter wave antenna |
| CN110277647A (en) * | 2019-06-05 | 2019-09-24 | 华南理工大学 | A kind of antenna for secret communication |
| CN110277647B (en) * | 2019-06-05 | 2020-10-27 | 华南理工大学 | Antenna for secret communication |
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