CN106058445B - A kind of broadband transmission array antenna based on three-layer metal plate - Google Patents
A kind of broadband transmission array antenna based on three-layer metal plate Download PDFInfo
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- CN106058445B CN106058445B CN201610596425.2A CN201610596425A CN106058445B CN 106058445 B CN106058445 B CN 106058445B CN 201610596425 A CN201610596425 A CN 201610596425A CN 106058445 B CN106058445 B CN 106058445B
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- slot
- longitudinal
- metal plate
- longitudinal direction
- finger
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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
- H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
Abstract
The present invention provides a kind of broadband transmission array antenna based on three-layer metal plate, including three-layer metal plate, the metal plate is in parallel relation between layers, each layer metal plate all etched multiple finger-type slot elements, and multiple finger-type slot element is equally arranged on each layer of the metal plate, wherein, the finger-type slot element successively sequentially includes: first longitudinal direction gap, second longitudinal direction gap, third longitudinal slot, 4th longitudinal slot and the 5th longitudinal slot, the first longitudinal direction gap, the second longitudinal direction gap, the third longitudinal slot, it is parallel to each other between 4th longitudinal slot and the 5th longitudinal slot, and about the symmetrical distribution of third longitudinal slot；The finger-type slot element further includes the first transverse slot, and first transverse slot is vertical and passes through the first longitudinal direction gap, the second longitudinal direction gap, the third longitudinal slot, the 4th longitudinal slot and the 5th longitudinal slot.
Description
Technical field
The present invention relates to antenna technical field, in particular to a kind of broadband transmission array day based on three-layer metal plate
Line.
Background technique
Antenna is widely used in the radio systems such as communication, broadcast, TV, radar and navigation, plays propagation
The effect of radio wave is effective eradiation and the reception essential device of radio wave.Wherein, array antenna be it is a kind of by
No less than two antenna element rules or random alignment and the particular antenna that predetermined radiation characteristic is obtained by suitably motivating.
Currently, existing transmission array antenna, generally comprises feed and transmission array two parts, by designing transmission array
In each unit transmission phase, to feed radiation spherical wave carry out phase compensation, can by feed radiate spherical wave
It is converted into plane wave, to realize high-gain wave beam.But existing transmission array antenna, often four-layer structure, difficult processing
Spend larger, and the 1dB gain bandwidth of antenna is relatively narrow, generally within 10%.
Summary of the invention
It is an object of the present invention to solve to there are difficulty of processing big, the 1dB gain of existing broadband transmission array antenna
Bandwidth is less than 10%, the relatively narrow defect of operating bandwidth, and the present invention provides a kind of broadband transmission battle arrays based on three-layer metal plate
Array antenna, including three-layer metal plate, the metal plate is in parallel relation, each layer of the gold between layers
Belonging to plate all etched multiple finger-type slot elements, and multiple finger-type slot elements be equally arranged in it is described
On each layer of metal plate, wherein the finger-type slot element successively sequentially includes: first longitudinal direction gap, second longitudinal direction seam
Gap, third longitudinal slot, the 4th longitudinal slot and the 5th longitudinal slot, the first longitudinal direction gap, the second longitudinal direction seam
Gap, the third longitudinal slot are parallel to each other between the 4th longitudinal slot and the 5th longitudinal slot, and about described
The symmetrical distribution of third longitudinal slot；The finger-type slot element further includes the first transverse slot, and described first laterally stitches
Gap is vertical and passes through the first longitudinal direction gap, the second longitudinal direction gap, the third longitudinal slot, the 4th longitudinal seam
Gap and the 5th longitudinal slot.
The length in the second longitudinal direction gap is greater than the length in the first longitudinal direction gap, the length of the third longitudinal slot
Degree is greater than the second longitudinal direction gap, and the length in the first longitudinal direction gap is identical as the length of the 5th longitudinal slot；Described
The length of two longitudinal slots is identical as the length of the 4th longitudinal slot.
The spacing between layers of the metal plate is a quarter of antenna wavelength.
First transverse slot includes the first transverse slot width；The broadband transmission array antenna is obtained by calculating
Each of the finger-type slot element transmission phase, according to transmission phase and the finger-type slot element in first laterally
The chart of the corresponding relationship of the width in gap obtains the width of the first transverse slot in each finger-type slot element；When
When the electromagnetic wave of feed radiation passes through the broadband transmission array antenna, first in each finger-type slot element is lateral
The width in gap is designed by calculating and transmitting phase curve, can carry out phase compensation to the electromagnetic wave that feed radiates,
The spherical wave that feed radiates is converted into plane wave, to realize high-gain wave beam.
The present invention has the advantages that the transmission array antenna flat using three-layer metal, reduces adding for transmission antenna
Work difficulty extends its 1dB gain bandwidth and bandwidth of operation.
Detailed description of the invention
Fig. 1 (a) is the top view of the structural schematic diagram of finger-type slot element of the invention
Fig. 1 (b) is the side view of the structural schematic diagram of finger-type slot element of the invention
The length in the width L1 first longitudinal direction gap of s longitudinal slot
The length of the length L3 third longitudinal slot in L2 second longitudinal direction gap
The spacing between layers of the width h three-layer metal plate of the first transverse slot w
The length of the first transverse slot L
Fig. 2 is a kind of schematic diagram of broadband transmission array antenna based on three-layer metal plate of the invention
Fig. 3 is the transmission phase of finger-type slot element of the invention and the relation curve of the first transverse slot width
Fig. 4 is a kind of tables of data of the transmission phase of broadband transmission array antenna based on three-layer metal plate of the invention
Fig. 5 is a kind of frequency-gain curve of broadband transmission array antenna based on three-layer metal plate of the invention
Fig. 6 is a kind of top view of broadband transmission array antenna based on three-layer metal plate of the invention
Specific embodiment
Below in conjunction with attached drawing, the present invention is described in further detail.
Such as Fig. 1 (a), 1 (b), shown in 2 and 6, the present invention provides a kind of broadband transmission array day based on three-layer metal plate
Line, including three-layer metal plate, the metal plate is in parallel relation between layers, and each layer of the metal is flat
Plate all etched multiple finger-type slot elements, and unit size is 12mm × 12mm, and multiple finger-type slot elements are in
It is equidistantly arranged on each layer of the metal plate, wherein the finger-type slot element successively includes: the from left to right
One longitudinal slot, second longitudinal direction gap, third longitudinal slot, the 4th longitudinal slot and the 5th longitudinal slot, the first longitudinal direction
Gap, the second longitudinal direction gap, the third longitudinal slot, between the 4th longitudinal slot and the 5th longitudinal slot
It is parallel to each other, and about the symmetrical distribution of third longitudinal slot, the finger-type slot element further includes first lateral
Gap comprising first transverse slot width；First transverse slot is vertical and passes through the first longitudinal direction gap, institute
State second longitudinal direction gap, the third longitudinal slot, the 4th longitudinal slot and the 5th longitudinal slot.
As shown in Fig. 1 (a), the first longitudinal direction gap, the second longitudinal direction gap, the third longitudinal slot is described
The gap width s of 4th longitudinal slot and the 5th longitudinal slot is 0.8mm, and the length L1 in first longitudinal direction gap is
5.5mm, the length L2 in the second longitudinal direction gap are 7.7mm, and the length L3 of the third longitudinal slot is 11mm；Described second
The length L2 of longitudinal slot is greater than the length L1 in the first longitudinal direction gap, and the length L3 of the third longitudinal slot is greater than described
The length L2, the length L1 in the first longitudinal direction gap in second longitudinal direction gap are identical as the length of the 5th longitudinal slot；Described
The length L2 of two longitudinal slots is identical as the length of the 4th longitudinal slot.
The spacing h between layers of the metal plate is a quarter of antenna wavelength.
As illustrated in fig. 2, it is assumed that the coordinate of feed is (x in three-dimensional system of coordinatef,yf,zf), the broadband transmission array
Antenna is located at xoy plane, wherein the coordinate of i-th of unit is (xi,yi,0).Assuming that the transmission phase of each unit isSo radiation beam is directed towardWith the position (x of each transmission uniti,yi, 0) and transmission phaseAnd position (the x of feedf,yf,zf) relational expression it is as follows:
Wherein k0For the wave number in free space, diFor the distance between feed and i-th of unit:
The transmission characteristic of each finger-type slot element is calculated, calculated result is as shown in figure 3, when described
When first transverse slot width w increases to 4.5mm by 1.2mm, the transmission phase of the finger-type slot element is with described
The transmission phase change of 360 ° of ranges may be implemented in the change of one transverse slot width w.
The bore of the transmission array antenna is 156mm, and horn feed is apart from front 124.8mm, by formula (1) and formula
(2) the transmission phase distribution that can obtain each finger-type slot element in the transmission array antenna is as shown in Figure 4.According to Fig. 4's
Transmit corresponding pass of the phase distribution with the first transverse slot width in transmission phase shown in Fig. 3 and the finger-type slot element
System's figure, obtains the width w of the first transverse slot in transmission array in each finger-type slot element, to complete the broadband
The design of transmission array, as shown in Figure 6；When the electromagnetic wave of feed radiation passes through the broadband transmission array antenna, each
The width of the first transverse slot in the finger-type slot element is designed by formula (1) and transmission phase curve
Phase compensation is carried out to the electromagnetic wave of feed radiation, the spherical wave that feed radiates is converted into plane wave, to realize high-gain
Wave beam.
As shown in figure 5, the broadband transmission array antenna is 21.2dB in the gain of centre frequency 13.58GHz,
In 12.7GHz-16GHz frequency range, the gain of the broadband transmission array antenna is greater than 20.2dB, relative to centre frequency
13.58GHz, the 1dB gain bandwidth of the broadband transmission array antenna are 24%, compared with transmission array antenna 1dB gain
Bandwidth is compared less than 10%, has obtained the raising of conspicuousness, and then realize high-gain wave beam.
It should be noted last that the above examples are only used to illustrate the technical scheme of the present invention and are not limiting.Although ginseng
It is described the invention in detail according to embodiment, those skilled in the art should understand that, to technical side of the invention
Case is modified or replaced equivalently, and without departure from the spirit and scope of technical solution of the present invention, should all be covered in the present invention
Scope of the claims in.
Claims (4)
1. a kind of broadband transmission array antenna based on three-layer metal plate, which is characterized in that turn the spherical wave of feed radiation
Plane wave is changed into, to realize high-gain wave beam；The broadband transmission array antenna includes three-layer metal plate, the metal
Plate is in parallel relation between layers, and each layer of the metal plate all etched multiple finger-type slot elements, and
And multiple finger-type slot elements are equally arranged on each layer of the metal plate, wherein the finger-type
Slot element successively sequentially includes: first longitudinal direction gap, second longitudinal direction gap, third longitudinal slot, the 4th longitudinal slot and
Five longitudinal slots, the first longitudinal direction gap, the second longitudinal direction gap, the third longitudinal slot, the 4th longitudinal seam
It is parallel to each other between gap and the 5th longitudinal slot, and about the symmetrical distribution of third longitudinal slot；The finger
Type slot element further includes the first transverse slot, and first transverse slot is vertical and passes through the first longitudinal direction gap, described
Second longitudinal direction gap, the third longitudinal slot, the 4th longitudinal slot and the 5th longitudinal slot.
2. a kind of broadband transmission array antenna based on three-layer metal plate according to claim 1, which is characterized in that institute
The length for stating second longitudinal direction gap is greater than the length in the first longitudinal direction gap, and the length of the third longitudinal slot is greater than described
The length in second longitudinal direction gap, the first longitudinal direction gap is identical as the length of the 5th longitudinal slot；The second longitudinal direction gap
Length it is identical as the length of the 4th longitudinal slot.
3. a kind of broadband transmission array antenna based on three-layer metal plate according to claim 1, which is characterized in that institute
The spacing between layers for the metal plate stated is a quarter of antenna wavelength.
4. a kind of broadband transmission array antenna based on three-layer metal plate according to claim 1, which is characterized in that the
The width of one transverse slot be by the finger-type slot element transmission phase and the finger-type slot element transmission phase with
The graph of relation of first transverse slot width determines jointly；And the transmission phase of the finger-type slot element then passes through public affairs
Formula (1), which calculates, to be obtained；Wherein, positioned at the biography of i-th of finger-type slot element of the broadband transmission array antenna of xoy plane
Defeated phase isIt is directed toward with radiation beamPosition (the x of i-th of finger-type slot elementi,yi, 0) and feed
Position (xf,yf,zf) relationship be expressed as follows with formula (1):
Wherein, k0For the wave number in free space, diFor the distance between feed and i-th of finger-type slot element.
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| CN201610596425.2A CN106058445B (en) | 2016-07-26 | 2016-07-26 | A kind of broadband transmission array antenna based on three-layer metal plate |
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| CN201610596425.2A CN106058445B (en) | 2016-07-26 | 2016-07-26 | A kind of broadband transmission array antenna based on three-layer metal plate |
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| CN106058445B true CN106058445B (en) | 2018-12-04 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107293851A (en) * | 2017-05-09 | 2017-10-24 | 中国科学院国家空间科学中心 | Load the finger-type slot element and restructural reflectarray antenna of varactor |
| CN108899637A (en) * | 2018-07-04 | 2018-11-27 | 电子科技大学 | A kind of High-Power Microwave mould relay antenna based on diffraction periodic structure |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201789075U (en) * | 2010-09-08 | 2011-04-06 | 国民技术股份有限公司 | Radio frequency identification tag antenna device |
| CN104868253A (en) * | 2015-04-23 | 2015-08-26 | 中国科学院空间科学与应用研究中心 | Metal flat lens antenna |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012139079A2 (en) * | 2011-04-07 | 2012-10-11 | Colburn Joseph S | Tunable impedance surfaces |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201789075U (en) * | 2010-09-08 | 2011-04-06 | 国民技术股份有限公司 | Radio frequency identification tag antenna device |
| CN104868253A (en) * | 2015-04-23 | 2015-08-26 | 中国科学院空间科学与应用研究中心 | Metal flat lens antenna |
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