CN208460992U - A kind of directional plane reflectarray antenna back-shaped based on well - Google Patents
A kind of directional plane reflectarray antenna back-shaped based on well Download PDFInfo
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- CN208460992U CN208460992U CN201820588152.1U CN201820588152U CN208460992U CN 208460992 U CN208460992 U CN 208460992U CN 201820588152 U CN201820588152 U CN 201820588152U CN 208460992 U CN208460992 U CN 208460992U
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Abstract
The utility model relates to a kind of directional plane reflectarray antenna back-shaped based on well, including the single layer reflective array that in the Feed Horn of X-band and surface there is the array element of the back-shaped different size metallic patches of likeness in form well to constitute that works.Reflective array unit of the reflective array by 24 × 24 i.e. 576 by simulation calculation design forms, and the top layer of each reflective array unit is to be similar to the back-shaped metal patch of well, and middle layer is medium substrate, and the bottom is copper backboard.The utility model proposes a kind of new metal patch shapes, new idea is provided for the array element design of plane reflection array, it can be worked normally by simulation calculation antenna, when incident electromagnetic wave is 11.6GHz, beam-forming is at 15 °, 25 °, 30 °, the wave beam centrality of reflection electromagnetic wave is good, and minor lobe is lower.
Description
Technical field
The utility model relates to a kind of beam reflector aerials, specifically a kind of to be made of the back-shaped array element of likeness in form well
The research of planar reflectarray antennas with single layer structure, belong to microwave device technology, radio frequency system front-end technology field.
Background technique
Directional aerial refers to be emitted and to receive electromagnetic wave especially strong on some or certain several specific directions, and at other
Direction on emit and receive electromagnetic wave be then zero or a kind of minimum antenna.Purpose using directional transmitting antenna is to increase spoke
The effective rate of utilization of power is penetrated, confidentiality is increased, the main purpose using directional receiving antenna is that enhancing signal strength increase is anti-
Interference performance.Directional aerial, shows as certain angle range of radiation in the horizontal direction on figure, that is, usually described has direction
Property.The same with omnidirectional antenna, lobe width is smaller, and gain is bigger.Directional aerial be generally used in a communications system communication away from
From remote, coverage area is small, and target density is big, the high environment of frequency efficiency.In recent years, satellite communication, microwave communication and space flight
The fast development of technology, to radar system, more stringent requirements are proposed, and the communication between user is emitted to base station by antenna, then
User is passed to by base station, therefore mobile communication there must be the cooperation of antenna for base station that could complete.Directional aerial is generally used for moving
The dynamic higher region of user density, and need to use omnidirectional antenna in the lower region of mobile subscriber's density.Directional aerial is common
It in the long street of covering, and has the advantage that with biggish forward gain, backward signal can be inhibited, when the cell meeting
When causing potentially to interfere to its subsequent cell, this characteristic is highly useful.In addition it is worth mentioning that directional aerial can be with
Improve the in-door covering of certain buildings in microcellulor coverage area.
Utility model content
The shortcomings that technical problem to be solved in the utility model is, overcomes the prior art provides a kind of structurally reasonable, biography
The defeated high-efficient directional plane reflectarray antenna back-shaped based on well, can be realized in the beam collection in X-band.
In order to solve the above technical problems, the utility model provides a kind of directional plane reflecting antenna back-shaped based on well,
It is made of the Feed Horn and plane reflection array that work in X-band, the Feed Horn is installed on plane reflection by bracket
Array side, the plane reflection array include medium substrate and metal backing, and the upper surface of the medium substrate has size
The single layer reflective array that different periodical resonant elements is constituted, it is in " returning " font that it is internal, which to include several, for the resonant element,
Outside is in the array element of " well " font.
The utility model further limits technical solution are as follows: the array element is made of metal patch, and inside is by inside and outside
Two squares constitute " a returning " character form structure, and two square corresponding sides are parallel, " time " character form structure
Outside is equipped with " well " character form structure parallel with the corresponding sides of square；
The side length of the interior square isIts outer square frame is respectively by side lengthSquare phase
Subtracting and obtains, external " well " character form structure is composed of four rectangles, length and the width respectively 2a of each rectangle,Starting is sat
Mark is respectivelyAnd the single layer reflective array is by 24 × 24 i.e. 576
A array element composition by being calculated；Its shape is long 288mm, width 288mm, the cuboid with a thickness of 3mm.
Further, it is 12mm that the medium substrate, which is length and width, and with a thickness of the cuboid of 3mm, material is used
FR4_epoxy, dielectric constant 4.4, loss tangent 0.02.The bottom of the medium substrate is fixed with metal backing,
The metal backing uses length and width dimensions copper backboard identical with medium substrate, and the thickness of the copper backboard is ignored.
Further, the working frequency range of the Feed Horn is X-band, is being located at plane reflection array side center just
Top away from reflective array surface 291mm at, be 10 ° with Z axis angle.
The beneficial effects of the utility model are: the utility model passes through simulation calculation it can be concluded that reflective array unit is not
With the phase compensation figure of position, and then obtain size distribution plot, the plane reflection array thus made under the irradiation of feed, by
In reflector element structure size composed on front, there are deviations, correct reflected phase with this and postpone, compensation space phase difference,
Equiphase surface is obtained in far field, realizes with being added, obtains the radiation beam on required direction.And the utility model proposes one kind
New metal patch shape provides new idea for the array element design of plane reflection array, by simulation calculation antenna
It can work normally, and minor lobe is lower.
The utility model belongs to directional aerial, can satisfy that communication distance is remote, and coverage area is small, and target density is big, frequency
Requirement under the high environment of utilization rate.
Detailed description of the invention
The technical solution of the utility model is described in further detail with reference to the accompanying drawing.
Fig. 1 is the structural schematic diagram of the utility model.
Fig. 2 is the front view of the utility model.
Fig. 3 is the perspective view of Fig. 2.
Fig. 4 is array element phase characteristic curve figure.
Fig. 5 (a) is the size of array metal patch in 11.6GHz frequency, 15 ° of beam position；
Fig. 5 (b) is the size of array metal patch in 11.6GHz frequency, 25 ° of beam position；
Fig. 5 (c) is the size of array metal patch in 11.6GHz frequency, 30 ° of beam position.
Fig. 6 (a) is that maximum wave beam is directed toward θ in yoz plane1Directional diagram at=15 °；
Fig. 6 (b) is that maximum wave beam is directed toward θ in yoz plane2Directional diagram at=25 °；
Fig. 6 (c) is that maximum wave beam is directed toward θ in yoz plane3Directional diagram at=30 °.
Appended drawing reference is explained: 1-Feed Horn, 2-medium substrates, 3-array elements, 4- metal backing.
Specific embodiment
A kind of directional plane reflectarray antenna back-shaped based on well provided in this embodiment, structure such as Fig. 1 to Fig. 3 institute
Show, is made of Feed Horn and plane reflection array.Wherein, the working frequency range of Feed Horn is X-band, is located at plane reflection
The surface at array side center away from reflective array surface 291mm at, be 10 ° with Z axis angle.
Plane reflection array includes medium substrate and metal backing, the period that the upper surface of medium substrate has size different
Property the single layer reflective array that constitutes of resonant element, the resonant element includes several back-shaped array elements of likeness in form wells.Wherein,
Array element is made of metallic copper patch, and inside is made of " a going back to " character form structure, and two pros inside and outside two squares
The corresponding sides of shape are parallel, and the outside of " time " character form structure is equipped with " well " font knot parallel with the corresponding sides of square
Structure；Square side length is in centerIts outer square frame is respectively by side lengthSquare subtract each other and
, external " well " character form structure is composed of four rectangles, length and the width respectively 2a of each rectangle,Origin coordinates point
It is notAnd single layer reflective array passes through calculating by 24 × 24 i.e. 576
Obtained array element composition, shape are long 288mm, width 288mm, the cuboid with a thickness of 3mm.
Medium substrate is that length and width is all 12mm, and with a thickness of the cuboid of 3mm, material is FR4_epoxy, dielectric constant
It is 4.4, loss tangent 0.02.And it is fixed with copper backboard in the bottom of medium substrate, length and width is also 12mm, thick
Degree is ignored.
The principle of the present embodiment are as follows: the overall structure of the present embodiment is by driving source loudspeaker, single layer reflection array group at passing through
Thus simulation calculation is done it can be concluded that reflective array unit and then obtains size distribution plot in the phase compensation figure of different location
Plane reflection array out is under the irradiation of feed, since reflector element structure size composed on front is there are deviation, with
This amendment reflected phase delay, compensation space phase difference obtain equiphase surface in far field, realize with being added, obtain institute demander
Upward radiation beam.
Fig. 4 is the phase characteristic curve figure of array element, and reflective array unit passes through phase compensation and characteristic displacement curve
Calculating, it can be deduced that size needed for each unit, Fig. 5 (a) be 15 ° of beam position when metal patch size, Fig. 5 (b)
The size of metal patch when being 25 ° of beam position, the size of metal patch when Fig. 5 (c) is 30 ° of beam position, to obtain institute
The reflective array for needing different reflected beam angles under frequency, under the irradiation of Feed Horn, available same frequency range, different waves
The reflective array of Shu Zhixiang.
As shown in Fig. 6 (a), Fig. 6 (b), Fig. 6 (c), constructs three and work in the anti-of 11.6GHz different beams angle
Array is penetrated, under the first working condition, designed maximum wave beam is directed toward θ in yoz plane1=15 °, such as Fig. 6 (a) institute
Show, simulation result maximum wave beam θ1=15 °, it can be seen that the directive property of wave beam is relatively good under the angle, and energy comparison is concentrated；
Equally, under second of working condition, designed maximum wave beam is directed toward θ in yoz plane2It=25 °, as shown in Fig. 6 (b), imitates
True result maximum wave beam θ2=25 °；Under the third working condition, designed maximum wave beam is directed toward θ in yoz plane3=30 °,
As shown in Fig. 6 (c), simulation result maximum wave beam θ3=30 °.
The utility model proposes a kind of new metal patch shapes, provide for the array element design of plane reflection array
New idea can be worked normally by simulation calculation antenna, and minor lobe is lower.And the utility model belongs to directional aerial, is suitable for
Communication distance is remote, and coverage area is small, and target density is big, the high environment of frequency efficiency.
In addition to the implementation, the utility model can also have other embodiments.It is all to use equivalent replacement or equivalent change
The technical solution to be formed is changed, the protection scope of the requires of the utility model is all fallen within.
Claims (6)
1. a kind of directional plane reflectarray antenna back-shaped based on well, it is characterised in that: by the Feed Horn to work in X-band
And plane reflection array composition, the Feed Horn are installed on plane reflection array side, the plane reflection battle array by bracket
Column include medium substrate and metal backing, and the periodical resonant element that the upper surface of the medium substrate has size different is constituted
Single layer reflective array, the resonant element includes that several are internal in " returning " font, the external array element in " well " font.
2. the directional plane reflectarray antenna back-shaped based on well according to claim 1, it is characterised in that: the array
Unit is made of metal patch, and inside is made of " a returning " character form structure, and two square pairs inside and outside two squares
Answer side parallel, the outside of " time " character form structure is equipped with " well " character form structure parallel with the corresponding sides of square；
The side length of the interior square isIts outer square frame is respectively by side lengthSquare subtract each other and
, external " well " character form structure is composed of four rectangles, length and the width respectively 2a of each rectangle,Origin coordinates point
It is not。
3. the directional plane reflectarray antenna back-shaped based on well according to claim 1, it is characterised in that: the single layer
Reflective array is made of 24 × 24 i.e. 576 by the array element being calculated；The single layer reflective array be long 288mm,
Wide 288mm, the cuboid with a thickness of 3mm.
4. the directional plane reflectarray antenna back-shaped based on well according to claim 1, it is characterised in that: the medium
Substrate is that length and width is 12mm, and with a thickness of the cuboid of 3mm, material uses FR4_epoxy, dielectric constant 4.4, loss
Angle tangent value is 0.02.
5. the directional plane reflectarray antenna back-shaped based on well according to claim 4, it is characterised in that: the medium
The bottom of substrate is fixed with metal backing, and the metal backing uses length and width dimensions copper backboard identical with medium substrate.
6. the directional plane reflectarray antenna back-shaped based on well according to claim 1, it is characterised in that: the feed
Loudspeaker are located at the surface at plane reflection array side center, at the 291mm of reflective array surface, and the Feed Horn and Z
Axle clamp angle is 10 °.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820588152.1U CN208460992U (en) | 2018-04-24 | 2018-04-24 | A kind of directional plane reflectarray antenna back-shaped based on well |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820588152.1U CN208460992U (en) | 2018-04-24 | 2018-04-24 | A kind of directional plane reflectarray antenna back-shaped based on well |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112952395A (en) * | 2021-01-27 | 2021-06-11 | 南京理工大学 | Broadband reflection array antenna based on single-layer clip-shaped unit structure |
-
2018
- 2018-04-24 CN CN201820588152.1U patent/CN208460992U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112952395A (en) * | 2021-01-27 | 2021-06-11 | 南京理工大学 | Broadband reflection array antenna based on single-layer clip-shaped unit structure |
| CN112952395B (en) * | 2021-01-27 | 2022-05-17 | 南京理工大学 | Broadband reflection array antenna based on single-layer clip-shaped unit structure |
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