CN106229649B - A kind of compact conformal array antenna of genome units based on LTCC technology - Google Patents
A kind of compact conformal array antenna of genome units based on LTCC technology Download PDFInfo
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- CN106229649B CN106229649B CN201610584976.7A CN201610584976A CN106229649B CN 106229649 B CN106229649 B CN 106229649B CN 201610584976 A CN201610584976 A CN 201610584976A CN 106229649 B CN106229649 B CN 106229649B
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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
- H01Q21/00—Antenna arrays or systems
- H01Q21/0006—Particular feeding systems
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
- H01Q21/061—Two dimensional planar arrays
- H01Q21/065—Patch antenna array
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- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The invention belongs to antenna technical fields, a kind of compact conformal array antenna of the genome units based on LTCC technology are provided, for overcoming the shortcomings of existing circularly polarization microstrip patch array antenna in terms of taking into account its low section, circular polarisation, high-gain and broadband.The antenna includes the ground metal layer stacked gradually from the bottom up, layer dielectric substrate, lower metal paster antenna, upper layer medium substrate, upper layer metal patch antenna, lower metal paster antenna is made of the lower metal chip unit being arranged in array, the upper layer metal patch antenna is made of the upper layer metal patch submatrix being correspondingly arranged with lower metal chip unit, and the corresponding lower metal chip unit center of each upper layer metal patch submatrix is overlapped, collectively forms a genome units.The present invention can it is smaller under the limitation of identical array element number, gain is higher, circular polarisation performance is more preferable, and frequency bandwidth is also wider, and structure is simply easy to process.
Description
Technical field
The invention belongs to antenna technical fields, and in particular to a kind of novel compact conformal array day of LTCC genome units
Line.
Background technique
With flourishing for modern information technologies and new military revolution, future war will be towards land, sea, air, outer space, electricity five
Dimension one development.For radar as electromagnetic wave detection equipment, the effect played on future battlefield will be more and more important.Array day
Line emits as radar system and receives the component of electromagnetic wave, and the quality of performance directly affects the standard of radar detection result
True property, so the design of array antenna is particularly important for radar system.Array antenna has diversified form,
And microstrip antenna has apparent advantage compared to other microwave antennas: it is small in size, light-weight, it is low section, easily conformal with carrier,
Greatest irradiation direction is easily controllable with polarization, easily integrated with active/passive device etc..The array day formed with microstrip element
Line, it is small in size, integrated level is high, and may be implemented to improve gain, enhancing directionality, improve radiation efficiency, reduce minor lobe, formed
The characteristics such as shaped-beam and multi-beam；Circularly polarization microstrip patch array antenna not only has the advantages that the above antenna, moreover it is possible to receive
With transmitting omnidirectional's electromagnetic wave, application is more extensive.In terms of realizing micro-strip paster antenna circular polarisation, common are at present using more feedbacks
Electricity and the method for carrying out patch corner cut, but the former increases the complexity of antenna structure, makes the gain reduction of antenna, the latter is to patch
The dimension precision requirement of piece corner cut is higher.Circularly polarization microstrip patch array antenna takes into account its low section, circular polarisation, high-gain, width
The contradiction of frequency band is not well solved always.
LTCC (LTCC Technology) is used as a kind of multi-layer ceramics technology, use during multiple stratification curtain coating and
Through-hole technology, so that it is easy to process, and can provide layer thickness control more better than conventional base plate material, by the structure of microstrip antenna
By it is traditional it is one-dimensional extend to three-dimensional, change the design pattern of conventional microstrip antenna, it is integrated for improving radar antenna system
Degree can play a great role；Meanwhile the dielectric constant of LTCC material can change between 2~20000, adapt in different works
Working frequency.Therefore, LTCC technology has become new research hotspot in conjunction with microstrip antenna.
Summary of the invention
It is an object of the invention to overcome existing circularly polarization microstrip patch array antenna take into account its low section, circular polarisation,
Deficiency in terms of high-gain and broadband provides a kind of compact conformal array antenna of the genome units based on LTCC technology,
The antenna can not only preferably take into account the performance requirement of micro-strip paster antenna low section, small size, circular polarisation, high-gain,
The band bandwidth of antenna is also substantially increased simultaneously, and various aspects comprehensive performance can easily be accommodated, it is simple and convenient.
To achieve the above object, the technical solution adopted by the present invention are as follows:
A kind of compact conformal array antenna of genome units based on LTCC technology, connects including what is stacked gradually from the bottom up
Ground metal layer, layer dielectric substrate, lower metal paster antenna, upper layer medium substrate, upper layer metal patch antenna, the ground connection
Feed port is set on metal layer, and lower metal paster antenna is fed using feeding network, and the feeding network is by passing through down
The metal coaxial probe of layer medium substrate connects feed port, corresponds to metal coaxial probe in the upper layer medium substrate and opens up
Through-hole；It is characterized in that, the lower metal chip unit that the lower metal paster antenna is arranged in array by several is constituted,
Each lower metal chip unit is diagonal plus corner cut rectangular metal patch and offers rectangular recess at corner cut,
Other three sides that lower metal chip unit removes feed one side simultaneously are also provided with rectangular aperture；The upper layer metal patch antenna
It is made of the upper layer metal patch submatrix being correspondingly arranged with lower metal chip unit, each upper layer metal patch submatrix is right with it
The lower metal chip unit center answered is overlapped, collectively forms a genome units, and the upper layer metal patch submatrix is by being in 2
4 upper layer metal patch units of × 2 array arrangements are constituted, and each upper layer metal patch unit is equally using diagonal plus corner cut
Rectangular metal patch and rectangular recess is offered at corner cut, while metal patch unit four side in upper layer opens up rectangular slits
Gap.
Further, the edge between any two of 4 upper layer metal patch units in each upper layer metal patch submatrix
Spacing is the vacuum wavelength at 0.1~0.13 centre frequency.
4 upper layer metal patch units and its corresponding lower metal patch in each upper layer metal patch submatrix
The rectangular aperture size opened up on unit is identical.
The feeding network is connected with lower metal paster antenna, and feeding network is using quarter-wave transforming section and together
The connection of axis metal probe, is connected with lower metal chip unit using quarter-wave transforming section, is on the corner all made of
A quarter annulus, that is, sweeping elbow connection adopts the connection of top rake ladder in strip line junction of different size.
The feeding network, upper layer metal patch antenna, lower metal paster antenna and metal ground plane are all made of silver paste
It is printed in respective media substrate surface；The compact conformal array antenna process curtain coating of the genome units based on LTCC technology,
Punching, printing, lamination, etc. form after static pressure, cutting and sintering.
It should be noted that:
1, in the present invention, spacing is slightly larger than half wavelength, upper layer metal patch between the metal patch submatrix of upper layer
The distance of corresponding edge of the battle array apart from medium substrate is greater than the vacuum wavelength at 1/4 centre frequency.
2, rectangular recess is opened at the diagonal plus corner cut of upper layer metal patch unit and lower metal chip unit is control day
The principal element of line circular polarisation adjusts the size of metal radiation chip unit size and opened rectangular recess in each array element, protects
It demonstrate,proves single-point feedback rectangular patch and generates two equal orthogonal degenerate mode shapes of amplitude phase difference in 90 °；Meanwhile lower metal pastes
Blade unit using three sides open it is asymmetric open up rectangular aperture, upper layer metal patch unit is symmetrically provided with rectangular aperture using every side,
Perturbation is formed, each upper layer metal patch unit and lower metal chip unit size are different, form a variety of perturbations and coupling
Mode greatly increases the frequency bandwidth of antenna, and greatly reduces metal radiation patch in the case where guaranteeing that centre frequency is constant
Size；And the genome array element being made of upper layer metal patch submatrix and lower metal chip unit can be any by adjusting
The size and shape of metal patch unit adjust the performance of entire array antenna, realize genome manipulation, so that realizing can hold
Continuous sexual development.
3, the line width of the feeding network on layer dielectric substrate will should be carried out according to the dielectric constant size and thickness of substrate
It is appropriate to adjust, with the impedance for the 1/4 wavelength conversion section for ensuring to connect with coaxial metal probe for 50 ohm.
4, the relative dielectric constant range of layer dielectric substrate and the used LTCC ceramic material of upper layer medium substrate be 2~
100。
Compared with the prior art, the invention has the following advantages and beneficial effects: 1) antenna uses SF single feed, structure letter
It is single, easy to process, circular polarisation, effectively promotion circular polarisation are realized using the form for adding corner cut square-shaped metal patch to open rectangular recess
Performance, and circular polarisation property regulation is simple and convenient；2) using the upper layer every side of metal patch unit symmetrically open up rectangular aperture,
The asymmetric form for opening up rectangular aperture in three sides of the lower metal chip unit in addition to feed base, utilizes asymmetric gap perturbation
Method is greatly improved the frequency bandwidth of antenna, and small in the condition of same centre frequency, can reduce the ruler of metal patch
It is very little, while also optimized the axis ratio of antenna, bandwidth obtains a degree of broadening；3) metal pastes in a genome units
Blade unit size is different, greatly expands the beamwidth of antenna, and the size by adjusting any cell is to realize various differences
Target and the antenna function of requirement realize sustainable row development；4) upper and lower layer metal patch unit forms coupling up and down in genome
It closes, forms coupling and perturbation all around between the metal patch unit of upper layer, more multi-mode has been motivated, to considerably increase
The beamwidth of antenna；5) different discontinuity compensating forms is used at the different converting interface of feeding network, makes the energy of transmission line
Reflection reduces, to improve the entire gain of antenna；6) cylindrical hole is opened on the ltcc substrate of upper layer, not only metal is facilitated to visit
Welding between needle and transmission line, and do not influence the circular polarisation of antenna entirety, at the same can also by adjust the size of window come
The overall performance for adjusting antenna, to increase the overall frequency bandwidth of antenna；7) antenna takes full advantage of the excellent of LTCC technology
Point to realize the conformal design of entire antenna, and subtracts antenna size to close gapless combination is carried out between different laminations
It is small, performance boost.To sum up, the present invention can identical array element number limitation under it is smaller, gain is higher, circular polarisation performance more
It is good, and frequency bandwidth is also wider, and structure is simply easy to process.
Detailed description of the invention
Fig. 1 is that signal is unfolded in the structure of the compact conformal array antenna of genome units based on LTCC technology in embodiment
Figure, wherein 1 is upper layer medium substrate, and 2 be layer dielectric substrate, and 3 be ground metal layer, 4,5,6,7 be respectively first and second,
Three, four upper layer metal patch unit, 8 be through-hole, and 9 be lower metal chip unit, and 10 be a quarter annulus, that is, sweeping elbow,
11 be microstrip line, and 12 be 1/4 wavelength conversion section connecting with coaxial metal probe, and 13 be feed port.
Fig. 2 is the upper layer metal patch day of the compact conformal array antenna of genome units based on LTCC technology in embodiment
Cable architecture schematic diagram.
Fig. 3 is the lower metal patch day of the compact conformal array antenna of genome units based on LTCC technology in embodiment
Cable architecture schematic diagram.
Fig. 4 is the ground metal layer signal of the compact conformal array antenna of genome units based on LTCC technology in embodiment
Figure.
Fig. 5 is the working frequency and reflection of the compact conformal array antenna of genome units based on LTCC technology in embodiment
The graph of relation of S11 is lost.
Fig. 6 is the aerial angle of the compact conformal array antenna of genome units based on LTCC technology and gain in embodiment
Graph of relation.
Fig. 7 is the pass of the angle of the compact conformal array antenna of genome units based on LTCC technology and axis ratio in embodiment
It is curve graph.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples, but the present invention is not limited thereto.
The present embodiment provides a kind of compact conformal array antenna of genome units based on LTCC technology, structure such as Fig. 1
To shown in Fig. 4, the center frequency point of the antenna is 9.8GHz, and as shown in Fig. 5, Fig. 6, Fig. 7, the present embodiment can be for performance test
In the sectional thickness of 2.5mm, realize that impedance bandwidth reaches 2.35GHz, the genome that gain is up to 14.242dB is compact total
Shape antenna, and the axis ratio of antenna can be down to 2.01dB.
The compact conformal array antenna of the above-mentioned genome units based on LTCC technology, including with flowering structure:
Upper layer medium substrate (1): the substrate using 14 with a thickness of 0.1mm, LTCC tape casting diaphragm that dielectric constant is 5.9
It is overrided to form, substrate lateral dimension is 54mm, longitudinal size 56mm；Upper surface of base plate is printed with using silver paste in 2 × 2 arrangements
4 upper layer metal patch submatrixs, each submatrix is by the first, second, third, fourth upper layer metal patch unit (4,5,6,7)
It constitutes, the size of the first upper layer metal patch unit (4) is 5.4mm × 5.2mm, the ruler of the second upper layer metal patch unit (5)
Very little is 5.2mm × 5.4mm, and the size of third upper layer metal patch unit (6) is 5.3mm × 5.2mm, the 4th upper layer metal patch
The size of unit (7) be 5.4mm × 5.3mm, each upper layer metal patch unit it is diagonal go up corner cut at open rectangular recess with
Realize circular polarisation, a length of 1.14mm, the width 0.6mm of rectangular recess, in each upper layer metal patch unit in every Bian Shangkai
There is a length of 0.45mm, the rectangular aperture that width is 0.17mm；First upper layer metal patch unit (4) is apart from substrate edges lateral distance
For 9.2mm, fore-and-aft distance 8.1mm, the second upper layer metal patch unit (5) apart from substrate edges lateral distance is 8.3mm, vertical
It is 17.2mm to distance, third upper layer metal patch unit (6) apart from substrate edges lateral distance is 17.5mm, fore-and-aft distance is
8.1mm, the 4th upper layer metal patch unit (7) apart from substrate edges lateral distance is 17.3mm, fore-and-aft distance 17.2mm, on
Horizontal spacing between layer metal patch unit is 23mm, longitudinal pitch 25mm；Radius is provided in upper layer medium substrate is
The cylindrical hole (8) of 1.2mm, convenient for exposing feeder line port, so that convenient weld it.
Layer dielectric substrate (2): the substrate using 11 with a thickness of 0.1mm, LTCC tape casting diaphragm that dielectric constant is 5.9
It is overrided to form, substrate size is identical with upper layer medium substrate (1)；Upper surface of base plate is printed with 2 × 2 units using silver paste
The lower metal chip unit (9) and feeding network of several same sizes；The size of lower metal chip unit (9) be 5.6mm ×
5.3mm, and asymmetric rectangular slits are opened on other three sides except feed base, stitch a length of 0.45mm, width 0.17mm, lower layer's gold
Belong to chip unit and collectively forms a genome with the upper layer metal patch submatrix being correspondingly arranged thereon；The microstrip line of feeding network
Line width ensure that final microstrip line characteristic impedance is 50 ohm by optimization, and properties is made to reach requirement index；Wherein
Sweeping elbow (10) be radius be 2mm quarter circular arc, bandwidth 0.4mm, the width of microstrip line (11) is 0.95mm.
Ground metal layer (3): feed port 13 is set in ground metal layer (3).
The above description is merely a specific embodiment, any feature disclosed in this specification, except non-specifically
Narration, can be replaced by other alternative features that are equivalent or have similar purpose；Disclosed all features or all sides
Method or in the process the step of, other than mutually exclusive feature and/or step, can be combined in any way.
Claims (5)
1. the compact conformal array antenna of a kind of genome units based on LTCC technology, including the ground connection stacked gradually from the bottom up
Metal layer, layer dielectric substrate, lower metal paster antenna, upper layer medium substrate, upper layer metal patch antenna, the ground connection gold
Belong to and feed port is set on layer, lower metal paster antenna is fed using feeding network, and the feeding network is by passing through lower layer
The metal coaxial probe of medium substrate connects feed port, opens up in the upper layer medium substrate corresponding to metal coaxial probe logical
Hole；It is characterized in that, the lower metal chip unit that the lower metal paster antenna is arranged in array by several is constituted, often
A lower metal chip unit is diagonal plus corner cut rectangular metal patch and offers rectangular recess at corner cut, together
When lower layer's metal patch unit except feed one side other three sides be also provided with rectangular aperture；The upper layer metal patch antenna by
The upper layer metal patch submatrix being correspondingly arranged with lower metal chip unit is constituted, and each upper layer metal patch submatrix is corresponding
Lower metal chip unit center be overlapped, collectively form a genome units, the upper layer metal patch submatrix by 2 ×
4 upper layer metal patch units of 2 array arrangements are constituted, and each upper layer metal patch unit is equally using diagonal plus corner cut square
Shape metal patch and rectangular recess is offered at corner cut, while metal patch unit four side in upper layer opens up rectangular aperture.
2. by the compact conformal array antenna of genome units based on LTCC technology described in claim 1, which is characterized in that described
Edge spacing is 0.1~0.13 center to 4 upper layer metal patch units in each upper layer metal patch submatrix between any two
Vacuum wavelength at frequency.
3. by the compact conformal array antenna of genome units based on LTCC technology described in claim 1, which is characterized in that described
It is opened up on 4 upper layer metal patch units and its corresponding lower metal chip unit in each upper layer metal patch submatrix
Rectangular aperture size is identical.
4. by the compact conformal array antenna of genome units based on LTCC technology described in claim 1, which is characterized in that described
Feeding network is connected with lower metal paster antenna, and feeding network is connected using quarter-wave transforming section and coaxial metal probe
It connects, is connected using quarter-wave transforming section with lower metal chip unit, is on the corner all made of a quarter annulus
I.e. sweeping elbow connects, and is connected in strip line junction of different size using top rake ladder.
5. by the compact conformal array antenna of genome units based on LTCC technology described in claim 1, which is characterized in that described
Feeding network, upper layer metal patch antenna, lower metal paster antenna and metal ground plane are all made of silver paste and are printed in corresponding Jie
Matter substrate surface；The compact conformal array antenna of the genome units based on LTCC technology is by being cast, punching, printing, fold
Layer, etc. form after static pressure, cutting and sintering.
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Families Citing this family (7)
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| CN109935964B (en) | 2017-12-15 | 2021-04-09 | 华为技术有限公司 | Antenna unit and antenna array |
| CN108539401B (en) * | 2018-03-08 | 2020-07-21 | 电子科技大学 | L TCC double-layer single-feed circularly polarized microstrip patch array antenna unit |
| CN208904207U (en) * | 2018-06-11 | 2019-05-24 | 深圳迈睿智能科技有限公司 | Antenna |
| CN109004344B (en) * | 2018-07-24 | 2023-12-22 | 南通至晟微电子技术有限公司 | Broadband antenna applied to 5G mobile terminal |
| CN109714015B (en) * | 2018-12-28 | 2021-10-26 | 电子科技大学 | Laminated low-pass filter based on magnetic dielectric composite material |
| CN109687167A (en) * | 2018-12-29 | 2019-04-26 | 上海微波技术研究所（中国电子科技集团公司第五十研究所） | Aerial array for X-band wireless communication system |
| CN112818289B (en) * | 2021-01-11 | 2022-12-06 | 厦门大学 | Method for synthesizing multi-beam-frequency invariant conformal array |
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