CN107394367A - Millimeter wave half module substrate integrated wave guide circular polarized antenna unit and array antenna - Google Patents
Millimeter wave half module substrate integrated wave guide circular polarized antenna unit and array antenna Download PDFInfo
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- CN107394367A CN107394367A CN201710645825.2A CN201710645825A CN107394367A CN 107394367 A CN107394367 A CN 107394367A CN 201710645825 A CN201710645825 A CN 201710645825A CN 107394367 A CN107394367 A CN 107394367A
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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
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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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
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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
- H01Q13/10—Resonant slot antennas
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/24—Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction
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Abstract
The present invention relates to a kind of millimeter wave half module substrate integrated wave guide circular polarized antenna unit and array antenna; millimeter wave half module substrate integrated wave guide circular polarized antenna unit; including cell body; the cell body includes radiation layer unit, first medium layer unit, feed layer unit, second medium layer unit and the metallic ground layer unit stacked gradually, and the gap structure that can produce 90 ° of phase differences is provided with radiated layer unit；The feed layer unit includes impedance transformation line, and the impedance transformation line is correspondingly arranged with gap structure；The half module substrate integrated wave guide resonator coordinated with gap structure is provided with the cell body；The resonant frequency of the gap structure and half module substrate integrated wave guide resonator is f1, the frequency that the impedance transformation line couples with gap structure is f2,To realize antenna low section, easy of integration, broadband and miniaturization design requirement.
Description
Technical field
The present invention relates to millimeter-wave substrate collection waveguide circular polarized antenna technical field, more particularly to a kind of millimeter wave half module
Substrate integration wave-guide circular polarized antenna unit and array antenna.
Background technology
In recent years, developing rapidly with millimeter-wave technology, its satellite communication, spaceborne radar, zero-miss guidance and
The every field such as 5G mobile communication of future generation are widely used.
In many application scenarios, system requirements millimeter wave antenna has good circular polarization characteristics.Milli common at present
Metric wave circular polarized antenna mainly has microstrip structure and back cavity structure.However, microstrip structure is present, loss is big, radiation efficiency is low etc. lacks
Point；Back-cavity circularly polarized antenna with quarter-wave height can not meet low section, it is easy of integration, broadband and miniaturization
Design requirement.
The content of the invention
Based on this, the defects of the invention reside in prior art is overcome, there is provided a kind of millimeter wave half module substrate integrated wave guide circle
Polarized antenna elements and array antenna, to overcome microstrip structure the shortcomings that loss large radiation efficiency is low to be present, and realize that antenna is low
Section, easy of integration, broadband and miniaturization design requirement.
A kind of millimeter wave half module substrate integrated wave guide circular polarized antenna unit, including cell body, the cell body bag
Include the radiation layer unit stacked gradually, first medium layer unit, feed layer unit, second medium layer unit and metal ground plane list
Member, the gap structure that can produce 90 ° of phase differences is provided with radiated layer unit；The feed layer unit converts including impedance
Line, the impedance transformation line are correspondingly arranged with gap structure；The half module coordinated with gap structure is provided with the cell body
Substrate integration wave-guide resonator；The resonant frequency of the gap structure and half module substrate integrated wave guide resonator is f1, the resistance
The frequency that resistance thread-changing couples with gap structure is f2,
Above-mentioned millimeter wave half module substrate integrated wave guide circular polarized antenna unit is to be based on millimeter-wave substrate integrated waveguide entelechy
Change the improvement of antenna.Symmetrically halve on the architecture basics of millimeter-wave substrate integrated waveguide circular polarized antenna, and become using impedance
Microstrip structure is replaced in thread-changing, and impedance transformation line reduces loss, improves radiation efficiency.Radiate layer unit on gap structure with
The resonant frequency of half module substrate integrated wave guide resonator is f1, the impedance transformation line and half module substrate integrated wave guide resonator
Coupling frequency is f2.When, f1And f2Between can be formed standing wave be less than 2 bandwidth.So ensureing antenna list
Under conditions of first performance, reduce millimeter-wave substrate integrated waveguide circular polarized antenna unit size, can realize antenna low section, easily
Integrated, broadband and miniaturization design requirement.
In one of the embodiments, the half module substrate integrated wave guide resonator includes multiple in cell body
Metallic vias, multiple metallic vias are uniformly distributed in the side of gap structure along half-round curve or half wire.Structure letter
It is single, it is easily integrated.
In one of the embodiments, the metallic vias includes located at the first metallic vias radiated on layer unit, set
In the second metallic vias of first medium layer unit, located at the second metallic vias of first medium layer unit, located at feed layer list
3rd metallic vias of member, located at the 4th metallic vias of second medium layer unit and the hardware located at metallic ground layer unit
Belong to via, first metallic vias, the second metallic vias, the 3rd metallic vias, the 4th metallic vias and fifth metal via
It is sequentially communicated.The 3rd metallic vias that feed layer unit is provided with connects the second metallic vias with the 4th metallic vias, so protects
The continuous whole of metallic vias is demonstrate,proved..
In one of the embodiments, the metallic vias includes located at the first metallic vias radiated on layer unit, set
In the second metallic vias of first medium layer unit, located at the 4th metallic vias of second medium layer unit and located at metallic ground
The fifth metal via of layer unit, first metallic vias, the second metallic vias, the 4th metallic vias and fifth metal via
It is sequentially communicated.When spaced slot being not present between first medium layer unit and second medium layer unit, the second metallic vias and
4th metallic vias directly connects, and so ensure that the continuous whole of metallic vias.
In one of the embodiments, the gap structure includes two gaps, two gaps be mutually perpendicular to arrangement and
Radiate the edge connection of layer unit；Or the gap structure is 45 ° of single gaps；Or the gap structure is spiral-shaped slits.Adopt
It with this structure, can encourage that two amplitudes are equal, phase differs 90 ° of line polarization wave, make antenna electric field intensity end
Track projects in the plane perpendicular to the direction of propagation forms a circle, so as to realize the propagation of circularly polarised wave.
In one of the embodiments, the impedance transformation line is step impedance conversion line, gradual change impedance transformation line or song
Roll over impedance transformation line.The impedance transformation line can with radiate layer unit slot-coupled, so as to broadening antenna axial ratio bandwidth
And impedance bandwidth.
In one of the embodiments, the width in two gaps is identical, and length is different.The structure can produce two
The orthogonal electric field patterns of kind form circularly polarised wave and radiated to free space.Such a structure simplifies the design of double slit, can realize logical
The length for crossing change double slit produces 90 ° of phase differences to change.Simultaneously left-hand circular polarization can be realized by adjusting the length of double slit
Antenna or right-handed circular polarization antenna.
A kind of array antenna, including antenna body, the antenna body include radiating layer, the first medium stacked gradually
Layer, feed layer, second dielectric layer, transmission network network layers, the 3rd dielectric layer and metal ground plane；Four are provided with the radiating layer
The gap structure of 90 ° of phase differences can be produced, four gap structures are in 2 × 2 array distributions；The feed layer includes four impedances
Transformation line, four impedance transformation lines and four gap structures position correspondence one by one；The transmission network network layers include electrically connecting
The outer signal end connect and four inscribed signal ends, four outer signal ends are corresponded with four impedance transformation lines and electricity
Property connection；Four half module substrate integrated wave guide resonators are provided with the antenna body, four half-module chips integrate ripple
Lead resonator and four gap structures are corresponded and coordinated；Four gap structures turn clockwise phase difference increase by 90 ° or
Person reduces 90 °.Array antenna, will milli on the basis of using millimeter wave half module substrate integrated wave guide circular polarized antenna unit as prototype
Metric wave half module substrate integrated wave guide circular polarized antenna cell array.Such a mode so that array antenna is in all directions
Amplitude is equal in magnitude, and the track of vector end rotation is a circle, is formed a circular polarised array antenna.
In one of the embodiments, in addition to metal probe, through metal probe one end of second dielectric layer with it is described
Inscribed electric signal end connection, its other end are electrically connected with impedance transformation line.So that transmission network network layers and antenna element are effectively
Integrate, avoid the complexity of design and processing.
In one of the embodiments, the half module substrate integrated wave guide resonator, including it is more in cell body
Individual metallic vias, multiple metallic vias are uniformly distributed in the side of gap structure along half-round curve or half wire；It is described
Metallic vias includes the first metallic vias on radiating layer, the second metallic vias located at first medium layer, located at first
Second metallic vias of dielectric layer, located at the 3rd metallic vias of feed layer, located at the 4th metallic vias of second dielectric layer, if
In the 6th metallic vias, the 7th metallic vias located at the 3rd dielectric layer and the located at metal ground plane the 5th of transmission network network layers
Metallic vias, first metallic vias, the second metallic vias, the 3rd metallic vias, the 4th metallic vias, the 6th metal mistake
Hole, the 7th metallic vias and fifth metal via are sequentially communicated.Space between existing between first medium layer and second dielectric layer
Gap and when spaced slot be present between second dielectric layer and the 3rd dielectric layer, the second metallic vias and the 4th metallic vias it
Between interval have gap, between the 6th metallic vias and fifth metal via interval have gap, the 3rd metal mistake that feed layer is provided with
Hole connects the second metallic vias with the 4th metallic vias, and the 7th metallic vias that transmission network network layers 6A is provided with is by the 6th metal mistake
Hole connects with fifth metal via, so ensure that the continuous whole of metallic vias.
Brief description of the drawings
Fig. 1 is that the structure of the millimeter wave half module substrate integrated wave guide circular polarized antenna unit described in the embodiment of the present invention one is shown
It is intended to；
Fig. 2 is Fig. 1 explosive view；
Fig. 3 is multiple metallic vias along the equally distributed structural representation of half wire；
Fig. 4 is the radiating layer cellular construction figure with 45 ° of single gaps；
Fig. 5 is the radiating layer cellular construction figure with spiral-shaped slits；
Fig. 6 is the structural representation of gradual change impedance transformation line；
Fig. 7 is the structural representation of tortuous impedance transformation line；
Fig. 8 is the structural representation of the array antenna described in the embodiment of the present invention two；
Fig. 9 is Fig. 7 explosive view；
Figure 10 is the structural representation of radiating layer；
Figure 11 is the impedance bandwidth curve map of the array antenna of the embodiment of the present invention two；
Figure 12 is the axial ratio bandwidth and gain variation curve figure of the array antenna of the embodiment of the present invention two.
Description of reference numerals：1st, layer unit is radiated, 11, gap structure, 111, two gaps, 112, spiral-shaped slits,
113rd, 45 ° of single gaps, the 12, first metallic vias, 2, first medium layer unit, the 22, second metallic vias, 3, feed layer unit,
31st, impedance transformation line, 311, step impedance conversion line, 312, gradual change impedance transformation line, 313, tortuous impedance transformation line, 32,
Three metallic vias, 4, second medium layer unit, the 42, the 4th metallic vias, 5, metallic ground layer unit, 52, fifth metal via,
1A, radiating layer, 1a, connecting portion, 2A, first medium layer, 3A, feed layer, 4A, second dielectric layer, 5A, metal ground plane, 6A, feedback
Power network network layers, 7A, the 3rd dielectric layer, the 62, the 6th metallic vias, the 72, the 7th metallic vias, 8, metal probe.
Embodiment
For the ease of understanding the present invention, the present invention is described more fully below with reference to relevant drawings.In accompanying drawing
Give the better embodiment of the present invention.But the present invention can realize in many different forms, however it is not limited to herein
Described embodiment.On the contrary, the purpose for providing these embodiments is to make to understand more the disclosure
Add thorough and comprehensive.
It should be noted that when element is referred to as " being fixed on " another element, it can be directly on another element
Or there may also be element placed in the middle.When an element is considered as " connection " another element, it can be directly connected to
To another element or it may be simultaneously present centering elements.On the contrary, when element be referred to as " directly existing " another element " on " when,
In the absence of intermediary element.Term as used herein " vertically ", " horizontal ", "left", "right" and similar statement are
For illustrative purposes, it is unique embodiment to be not offered as.
Unless otherwise defined, all of technologies and scientific terms used here by the article is with belonging to technical field of the invention
The implication that technical staff is generally understood that is identical.Term used in the description of the invention herein is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term as used herein " and/or " include one or more
The arbitrary and all combination of related Listed Items.
Embodiment one：
Referring to Fig. 1, Fig. 2, a kind of millimeter wave half module substrate integrated wave guide circular polarized antenna unit, including cell body, institute
State radiation layer unit 1, first medium layer unit 2, feed layer unit 3, second dielectric layer list that cell body includes stacking gradually
Member 4 and metallic ground layer unit 5, the gap structure 11 that can produce 90 ° of phase differences is provided with radiated layer unit 1；The feedback
Electric layer unit 3 includes impedance transformation line 31, and the impedance transformation line 31 is correspondingly arranged with gap structure 11；In the cell body
It is provided with the half module substrate integrated wave guide resonator coordinated with gap structure 11；The gap structure 11 integrates ripple with half-module chip
The resonant frequency for leading resonator is f1, the frequency that the impedance transformation line 31 couples with gap structure 11 is f2,
Above-mentioned millimeter wave half module substrate integrated wave guide circular polarized antenna unit is to be based on millimeter-wave substrate integrated waveguide entelechy
Change the improvement of antenna.Symmetrically halve on the architecture basics of millimeter-wave substrate integrated waveguide circular polarized antenna, and become using impedance
Microstrip structure is replaced in thread-changing 31, and impedance transformation line reduces loss, improves radiation efficiency.Radiate the gap knot on layer unit 1
The resonant frequency of structure 11 and half module substrate integrated wave guide resonator is f1, the impedance transformation line 31 and half module substrate integrated wave guide
The coupling frequency of resonator is f2.When, f1And f2Between can be formed standing wave be less than 2 bandwidth.So protecting
Under conditions of demonstrate,proving antenna performance, reduce millimeter-wave substrate integrated waveguide circular polarized antenna unit size, can realize that antenna is low to be cutd open
Face, easy of integration, broadband and miniaturization design requirement.
Preferably, half film substrate integrated wave guide resonance chamber frequency and radiation layer unit 1 on gap structure 11 frequency,
Level off to f simultaneously1During, impedance matching and radiation efficiency gradually steps up；It is f in the two frequency1When, impedance matching is most
Excellent and radiation efficiency highest.Meanwhile impedance transformation line 31 couples with gap structure 11 and generates coupling frequency f2, cause cavity to have
Stronger load effect, so that two degenerate modes of antenna are close to each other, so that antenna obtains wider bandwidth of operation.
The millimeter wave half module substrate integrated wave guide circular polarized antenna unit, considerably reduce the size of cell body.With
The full mould substrate integration wave-guide circular polarized antenna of millimeter wave is compared, and size only has its half, but performance is suitable with its, it may have high Q
Value, low-loss are in light weight and the advantages that be easy to microstrip circuit to integrate.
Specifically, the half module substrate integrated wave guide resonator includes multiple metallic vias in cell body, it is more
The individual metallic vias is uniformly distributed in the side of gap structure 11 along half-round curve or half wire.It is simple in construction, it is easy to collect
Into.
Specifically, referring to Fig. 3, above-mentioned half wire includes Cheng " Xi " three sections of lines of shape.
In the present embodiment, to radiation layer unit 1, first medium layer unit 2, feed layer unit 3, second medium layer unit
4 and metallic ground layer unit 5 using common compression fit when, meeting between first medium layer unit 2 and second medium layer unit 4
Spaced slot be present, now above-mentioned metallic vias is included located at the first metallic vias 12 radiated on layer unit 1, located at first
Second metallic vias 22 of medium layer unit 2, located at the 3rd metallic vias 32 of feed layer unit 3, located at second dielectric layer list
4th metallic vias 42 of member 4 and the fifth metal via 52 located at metallic ground layer unit 5, first metallic vias 12,
Second metallic vias 22, the 3rd metallic vias 32, the 4th metallic vias 42 and fifth metal via 52 are sequentially communicated.Feed layer list
The 3rd metallic vias 32 that member 3 is provided with connects the second metallic vias 22 with the 4th metallic vias 42, so ensure that metal mistake
Hole it is continuous whole.
In other embodiments, to radiation layer unit 1, first medium layer unit 2, feed layer unit 3, second dielectric layer list
When member 4 and metallic ground layer unit 5 are assembled using bake pressure, it is not present between first medium layer unit 2 and second medium layer unit 4
Spaced slot, now the metallic vias include located at radiation layer unit 1 on the first metallic vias 12, located at first medium layer
Second metallic vias 22 of unit 2, located at the second metallic vias 22 of first medium layer unit 2, located at second medium layer unit 4
The 4th metallic vias 42 and the fifth metal via 52 located at metallic ground layer unit 5, first metallic vias 12, second
Metallic vias 22, the 4th metallic vias 42 and fifth metal via 52 are sequentially communicated.So it ensure that the continuous complete of metallic vias
It is whole.
Specifically, referring to Fig. 3, above-mentioned gap structure 11 includes two gaps 111, and two gaps 111 are mutually perpendicular to arrange
And in the edge connection of radiation layer unit 1；Or referring to Fig. 4, the gap structure 11 is 45 ° of single gaps 113, described 45 ° single seams
Gap 113 extends to the edge of radiation layer unit 1；Or referring to Fig. 5, the gap structure 11 is spiral-shaped slits 112.
It using this structure, can encourage that two amplitudes are equal, phase differs 90 ° of line polarization wave, make antenna electric field
The track of vector end projects in the plane perpendicular to the direction of propagation forms a circle, so as to realize the propagation of circularly polarised wave.
Referring to the radiation layer unit 1 in Fig. 2, gap structure 11 includes two gaps 111, and two gaps 111 are mutually perpendicular to
Arrange and connected at the edge of radiation layer unit 1, the width in two gaps 111 is identical, and length is different.By adjusting two
The length in gap can produce 90 ° of phase differences, so as to realize the circular polarisation performance of antenna.Adjust the length ratio in two gaps 111
Example, can form left-hand circular polarization antenna or right-handed circular polarization antenna.
Preferably, the impedance transformation line 31 is step impedance conversion line 311, gradual change impedance transformation line 312 or tortuous resistance
Resistance thread-changing 313.
The impedance transformation line 31 can couple with the gap structure 11 of radiation layer unit 1 can produce resonant frequency f2, from
And the axial ratio bandwidth and impedance bandwidth of broadening antenna.
Referring to the feed layer unit 3 in Fig. 2, above-mentioned step impedance conversion line 311 includes the micro-band branch and rectangle of connection
Minor matters, rectangle minor matters are corresponding with gap structure 11, and micro-band branch stretches out and is used for external.Step impedance conversion line 311 with
The coupling of gap structure 11 for radiating layer unit 1 produces resonant frequency f2.It can be adjusted by the length and width for changing rectangle minor matters
The electric capacity of whole resonant tank, so as to adjust the impedance of antenna, so realize the broadening of Antenna Operation bandwidth.It is such a by adjusting square
Shape minor matters size adjusts the mode of antenna impedance, simple in construction, easy to adjust.Foregoing resonant tank includes radiating element etc.
Imitate circuit, the coupled capacitor between unit feed line equivalent circuit and radiating element and unit feed line.
Referring to Fig. 6, above-mentioned gradual change impedance transformation line 312 is gradual change minor matters, and the width of the gradual change minor matters continuously narrows, its
Wide end is corresponding with gap structure 11, and its narrow end stretches out and is used for external.Gradual change impedance transformation line 312 and radiation layer unit 1
The coupling of gap structure 11 produce resonant frequency f2.Size by changing gradual change minor matters can adjust the electric capacity of resonant tank,
So as to adjust the impedance of antenna, the broadening of Antenna Operation bandwidth is so realized.It is such a to adjust gradual change minor matters size to adjust antenna
The mode of impedance, it is simple in construction, it is easy to adjust.
Referring to Fig. 7, above-mentioned tortuous impedance transformation line 313 is to include the connected minor matters of multistage, serpentine-like cloth between multistage minor matters
Put.Its one end is corresponding with gap structure 11, and its other end stretches out and is used for external.Tortuous impedance transformation line 313 and radiation
The coupling of gap structure 11 of layer unit 1 produces resonant frequency f2.Resonant tank can be adjusted by the size for changing multistage minor matters
Electric capacity, so as to adjust the impedance of antenna, so realize the broadening of Antenna Operation bandwidth.It is such a to adjust gradual change minor matters size to adjust
All day line impedence mode, it is simple in construction, it is easy to adjust.
In 2011, Chen Aixin. were sent out in IEEE Antennas and Wireless Propagation Letter
Table title is Development of a Ka-band wideband circularly polarized 64-element
microstrip antenna array with double application of the sequential rotation
Feeding technique article, based on the square corner cut circular polarization microstrip antenna unit of single-layer single-point feed, respectively
Circular polarization microstrip antenna array row are devised using order rotating feed and string and feeding classification, axial ratio bandwidth is narrow, is
5.6%.
In 2012, Y.Li etc. delivered topic in IEEE Transactions on Antennas and Propagation
For " Axial ratio bandwidth enhancement of 60-GHz substrate integrated
Waveguide-fed circularly polarized LTCC antenna array " article, using the conduct of SIW gaps
Chamber driving source is carried on the back, realizes about 14% impedance bandwidth, 10% axial ratio bandwidth.
In 2015, Hassan Gharibi etc. were in IEEE Transactions on Antennas and
Propagation delivers entitled " Design of a Compact High-Efficiency Circularly Polarized
Monopulse Cavity-Backed Substrate Integrated Waveguide Antenna " article, using complete
Mould SIW carries on the back chamber resonance structure as radiation source, and the pulse circular polarised array antenna of design realizes 2.4% impedance bandwidth,
1.75% axial ratio bandwidth.
It is the performance introduction of full mould SIW resonant antennas in above-mentioned document.The present embodiment millimeter wave half-module chip integrates ripple
The test index of rounding polarized antenna elements：Impedance bandwidth reaches 30%, and Circular polarization ratio bandwidth reaches 16%.Full mould antenna with
The present embodiment is compared, and it is big physical dimension to be present, the problem of narrow bandwidth.
Example 1- examples 5 are the performances of full mould substrate integration wave-guide antenna element：
Example 6- examples 7 are the performances of half film substrate integrated waveguide antenna unit；
Example 1- examples 5 are the experimental datas of the full mould substrate integration wave-guide circular polarized antenna unit of millimeter wave.In example 1- examples 5, have
The resonator of annular and rectangular configuration；Gap structure has circular or rectangular slot.
Example 6- examples 7 are all the experimental datas of millimeter wave half module substrate integrated wave guide circular polarized antenna unit.The wherein seam of example 6
Gap structure stitches using triangle list, and the feed layer unit of example 7 couples using microband paste.
From compare it can be seen that the present embodiment antenna have in terms of miniaturization, high-gain, broadband compared with other antennas it is bright
Aobvious advantage.
Embodiment two：
With reference to Fig. 8 and Fig. 9, the array antenna of the present embodiment includes antenna body, and the antenna body includes stacking gradually
Radiating layer 1A, first medium layer 2A, feed layer 3A, second dielectric layer 4A, transmission network network layers 6A, the 3rd dielectric layer 7A and metal
Ground plane 5A；Four gap structures 11 that can produce 90 ° of phase differences, four gap structures 11 are provided with the radiating layer 1A
In 2 × 2 array distributions；The feed layer 3A includes four impedance transformation lines 31, four impedance transformation lines 31 and four seams
Gap structure 11 corresponds；The transmission network network layers 6A includes the outer signal end being electrically connected with and four inscribed signal ends, institute
Four outer signal ends are stated to correspond and be electrically connected with four impedance transformation lines 31；Four are provided with the antenna body
The half module substrate integrated wave guide resonator, four half module substrate integrated wave guide resonators correspond with four gap structures 11
Coordinate；The resonant frequency of the corresponding gap structure 11 and half module substrate integrated wave guide resonator is f1, the corresponding resistance
The frequency that resistance thread-changing 31 couples with gap structure 11 is f2,Four gap structures 11 are along clockwise
Direction phase difference increases by 90 ° or 90 ° of reduction successively.
Such a mode so that the amplitude of array antenna in all directions is equal in magnitude, and the track of vector end rotation is
One circle, it is formed a circular polarised array antenna.Simpler compact, the feeder line road using this transmission network network layers 6A structures
Footpath is shorter, and the coupling effect between radiating element and feeder line is smaller, and Energy distribution is balanced, can significantly decrease the damage of feeder line
Consumption, improve gain and the radiation efficiency of aerial array.
Half module substrate integrated wave guide circular polarized antenna unit is formed into circular polarisation array, can further improve antenna gain,
Bandwidth is expanded, improves circular polarization characteristics.
Half module substrate integrated wave guide circular polarized antenna sequence of unit is rotated into 2 × 2 circular polarisation arrays of structure, 2 × 2 antenna arrays
The transmission network network layers 6A of row differs 90 ° to improve circular polarisation purity by four arm.Meanwhile utilize four units and feeding network
Layer 6A is spatially integrate, to meet miniaturization and compact-sized design requirement.
Specifically, second dielectric layer 4A metal is provided through between corresponding inscribed signal end and impedance transformation line 31
Probe 8, the metal probe 8 and the two electric connection.
So that together with transmission network network layers 6A is effectively integrated with half module substrate integrated wave guide circular polarized antenna unit, avoid
Design and the complexity of processing.
Referring to Fig. 8, in the present embodiment to radiating layer 1A, first medium layer 2A, feed layer 3A, second dielectric layer 4A, feedback
When power network network layers 6A, the 3rd dielectric layer 7A and metal ground plane 5A use common compression fit, first medium layer 2A and second
There is spacing between dielectric layer 4A, have spacing between second dielectric layer 4A and the 3rd dielectric layer 7A.Now above-mentioned half-module chip collection
Into waveguide resonant cavity, including multiple metallic vias in cell body, multiple metallic vias along half-round curve or
Half wire is uniformly distributed in the side of gap structure 11；The metallic vias includes the first metallic vias on radiating layer 1A
12nd, located at first medium layer 2A the second metallic vias 22, located at first medium layer 2A the second metallic vias 22, located at feed
Layer 3A the 3rd metallic vias 32, located at second dielectric layer 4A the 4th metallic vias 42, located at the 6th of transmission network network layers 6A the
Metallic vias 62, the 7th metallic vias 72 located at the 3rd dielectric layer 7A and the fifth metal via located at metal ground plane 5A
52, first metallic vias 12, the second metallic vias 22, the 3rd metallic vias 32, the 4th metallic vias 42, the 6th metal mistake
Hole 62, the 7th metallic vias 72 and fifth metal via 52 are sequentially communicated.
The 3rd metallic vias 32 that feed layer 3A is provided with connects the second metallic vias 22 with the 4th metallic vias 42, feed
The 6th metallic vias 62 that Internet 6A is provided with connects the 4th metallic vias 42 with the 7th metallic vias 72, so ensure that gold
Belong to the continuous whole of via.
In other embodiments, in radiating layer 1A, first medium layer 2A, feed layer 3A, second dielectric layer 4A, feeding network
When layer 6A, the 3rd dielectric layer 7A and metal ground plane 5A are assembled using bake pressure, between first medium layer 2A and second dielectric layer 4A
There is no spacing, there is no spacing between second dielectric layer 4A and the 3rd dielectric layer 7A.Now above-mentioned half module substrate integrated wave guide is humorous
Shake chamber, including multiple metallic vias in cell body, and multiple metallic vias are equal along half-round curve or half wire
The even side for being distributed in gap structure 11；The metallic vias includes the first metallic vias 12 on the radiating layer 1A, is located at
First medium layer 2A the second metallic vias 22, located at first medium layer 2A the second metallic vias 22, located at second dielectric layer
4A the 4th metallic vias 42, the 7th metallic vias 72 located at the 3rd dielectric layer 7A and the hardware located at metal ground plane 5A
Belong to via 52, first metallic vias 12, the second metallic vias 22, the 4th metallic vias 42, the 7th metallic vias 72 and the
Five metallic vias 52 are sequentially communicated.So it ensure that the continuous whole of metallic vias.In the present embodiment, above-mentioned gap structure 11
One kind in embodiment one in three kinds of gap structures can be used, above-mentioned impedance transformation line 31 can be used three in embodiment one
One kind in kind impedance transformation line.
Referring to the feed layer 1A in Figure 10, feed layer 1A includes four radiation layer units 1 in embodiment one, four battle arrays
The radiation layer unit 1 being intervally arranged is arranged to be connected by connecting portion 1a.
Referring to Figure 11, the impedance bandwidth curve map of the array antenna of the present embodiment 2 × 2；The impedance bandwidth of array antenna can reach
To 30%.
Referring to Figure 12, the axial ratio bandwidth and gain variation curve figure of the array antenna of the present embodiment 2 × 2.The circular polarisation of measurement
Axial ratio bandwidth reaches 16%, and maximum gain reaches 11dB.
Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned reality
Apply all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, the scope that this specification is recorded all is considered to be.
Embodiment described above only expresses the several embodiments of the present invention, and its description is more specific and detailed, but simultaneously
Can not therefore it be construed as limiting the scope of the patent.It should be pointed out that come for one of ordinary skill in the art
Say, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the protection of the present invention
Scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (10)
- A kind of 1. millimeter wave half module substrate integrated wave guide circular polarized antenna unit, it is characterised in that including cell body, the list Meta-ontology includes radiation layer unit, first medium layer unit, feed layer unit, second medium layer unit and the metal stacked gradually It is grounded layer unit,The gap structure of 90 ° of phase differences can be produced by being provided with radiated layer unit；The feed layer unit includes impedance transformation line, and the impedance transformation line is correspondingly arranged with gap structure；The half module substrate integrated wave guide resonator coordinated with gap structure is provided with the cell body；The resonant frequency of the gap structure and half module substrate integrated wave guide resonator is f1, the impedance transformation line and gap are tied The frequency of structure coupling is f2,
- 2. millimeter wave half module substrate integrated wave guide circular polarized antenna unit according to claim 1, it is characterised in that described Half module substrate integrated wave guide resonator includes multiple metallic vias in the cell body, and multiple metallic vias are along semicircle Curve or half wire are uniformly distributed in the side of gap structure.
- 3. millimeter wave half module substrate integrated wave guide circular polarized antenna unit according to claim 2, it is characterised in that described Metallic vias includes the first metallic vias on radiation layer unit, the second metallic vias located at first medium layer unit, Located at the second metallic vias of first medium layer unit, located at the 3rd metallic vias of feed layer unit, located at second dielectric layer 4th metallic vias of unit and the fifth metal via located at metallic ground layer unit, first metallic vias, the second gold medal Category via, the 3rd metallic vias, the 4th metallic vias and fifth metal via are sequentially communicated.
- 4. millimeter wave half module substrate integrated wave guide circular polarized antenna unit according to claim 2, it is characterised in that described Metallic vias includes the first metallic vias on radiation layer unit, the second metallic vias located at first medium layer unit, Located at the second metallic vias of first medium layer unit, connect located at the 4th metallic vias of second medium layer unit and located at metal The fifth metal via of stratigraphic unit, first metallic vias, the second metallic vias, the 4th metallic vias and fifth metal mistake Hole is sequentially communicated.
- 5. millimeter wave half module substrate integrated wave guide circular polarized antenna unit according to claim 1, it is characterised in that described Gap structure includes two gaps, and two gaps are mutually perpendicular to arrangement and in the edge connection of radiation layer unit；Or the gap Structure is 45 ° of single gaps；Or the gap structure is spiral-shaped slits.
- 6. millimeter wave half module substrate integrated wave guide circular polarized antenna unit according to claim 1, it is characterised in that described Impedance transformation line is step impedance conversion line, gradual change impedance transformation line or tortuous impedance transformation line.
- 7. millimeter wave half module substrate integrated wave guide circular polarized antenna unit according to claim 5, it is characterised in that described The width in two gaps is identical, and length is different.
- A kind of 8. array antenna, it is characterised in that including antenna body, the antenna body include stack gradually radiating layer, First medium layer, feed layer, second dielectric layer, transmission network network layers, the 3rd dielectric layer and metal ground plane；Four gap structures that can produce 90 ° of phase differences are provided with the radiating layer, four gap structures are in 2 × 2 arrays Distribution；The feed layer includes four impedance transformation lines, four impedance transformation lines and four gap structures position pair one by one Should；The transmission network network layers include the outer signal end being electrically connected with and four inscribed signal ends, four outer signal ends Correspond and be electrically connected with four impedance transformation lines；Four half module substrate integrated wave guide resonators are provided with the antenna body, four half module substrate integrated wave guides are humorous Shake chamber and four gap structures are corresponded and coordinated；The resonant frequency of the corresponding gap structure and half module substrate integrated wave guide resonator is f1, the corresponding impedance change The frequency that thread-changing couples with gap structure is f2,Four gap structures rotate clockwise phase difference increases by 90 ° or 90 ° of reduction successively.
- 9. array antenna according to claim 8, it is characterised in that corresponding inscribed signal end and impedance transformation line it Between be provided through the metal probe of second dielectric layer, the metal probe and the two electric connection.
- 10. array antenna according to claim 8, it is characterised in that the half module substrate integrated wave guide resonator, including Multiple metallic vias in cell body, multiple metallic vias are uniformly distributed in seam along half-round curve or half wire The side of gap structure；The metallic vias includes the first metallic vias on radiating layer, second located at first medium layer Metallic vias, located at the second metallic vias of first medium layer, located at the 3rd metallic vias of feed layer, located at second dielectric layer The 4th metallic vias, located at the 6th metallic vias of transmission network network layers, the 7th metallic vias located at the 3rd dielectric layer and set In the fifth metal via of metal ground plane, first metallic vias, the second metallic vias, the 3rd metallic vias, the 4th gold medal Category via, the 6th metallic vias, the 7th metallic vias and fifth metal via are sequentially communicated.
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| CN108666750A (en) * | 2018-04-09 | 2018-10-16 | 广东曼克维通信科技有限公司 | Substrate integration wave-guide circular polarized antenna |
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| CN110492242A (en) * | 2019-08-20 | 2019-11-22 | 西安电子科技大学 | A kind of ultra-thin half short circuit round polarization top radiating antenna |
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| CN108666750A (en) * | 2018-04-09 | 2018-10-16 | 广东曼克维通信科技有限公司 | Substrate integration wave-guide circular polarized antenna |
| CN108666750B (en) * | 2018-04-09 | 2020-01-14 | 广东曼克维通信科技有限公司 | Substrate integrated waveguide circularly polarized antenna |
| CN108879090A (en) * | 2018-06-06 | 2018-11-23 | 南京邮电大学 | Half cylindrical cavity miniature antenna of half module substrate integrated wave guide |
| CN110190403A (en) * | 2019-05-07 | 2019-08-30 | 南京邮电大学 | High-gain half module substrate integrated wave guide semicircle chamber electronically small antenna |
| CN110492242A (en) * | 2019-08-20 | 2019-11-22 | 西安电子科技大学 | A kind of ultra-thin half short circuit round polarization top radiating antenna |
| CN110581354A (en) * | 2019-08-28 | 2019-12-17 | 深圳市信维通信股份有限公司 | Dual-polarization 5G millimeter wave antenna structure and mobile device |
| CN111244598A (en) * | 2020-03-11 | 2020-06-05 | 摩比天线技术（深圳）有限公司 | Antenna radiation unit and electronic equipment |
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| CN111697341A (en) * | 2020-06-28 | 2020-09-22 | 京东方科技集团股份有限公司 | Slit antenna and communication device |
| CN111697341B (en) * | 2020-06-28 | 2023-08-25 | 京东方科技集团股份有限公司 | Slit antenna and communication device |
| US11777222B2 (en) | 2020-06-28 | 2023-10-03 | Boe Technology Group Co., Ltd. | Slot antenna and communication device |
| CN111987467A (en) * | 2020-09-09 | 2020-11-24 | 南京工程学院 | Method for expanding axial ratio bandwidth of back cavity gap circularly polarized antenna |
| CN112563724A (en) * | 2020-12-04 | 2021-03-26 | 西安电子科技大学 | Low-profile half-mode substrate integrated waveguide filter antenna with high frequency selectivity |
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