CN107403993A - A kind of electric scanning plane reflection array antenna unit based on RF switch - Google Patents
A kind of electric scanning plane reflection array antenna unit based on RF switch Download PDFInfo
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- CN107403993A CN107403993A CN201710417401.0A CN201710417401A CN107403993A CN 107403993 A CN107403993 A CN 107403993A CN 201710417401 A CN201710417401 A CN 201710417401A CN 107403993 A CN107403993 A CN 107403993A
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- paster
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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
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/26—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
- H01Q3/30—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the relative phase between the radiating elements of an array
- H01Q3/34—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the relative phase between the radiating elements of an array by electrical means
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- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The present invention provides a kind of electric scanning plane reflection array antenna unit based on RF switch, it is characterised in that is mainly made up of patch layer, dielectric layer and ground panel；Wherein, the patch layer includes metal patch and at least one RF switch, and the metal patch is made up of outer shroud paster and center patch, and the RF switch is connected between outer shroud paster and center patch.The antenna element realizes the phase shift of unit using the break-make of RF switch, therefore it can be achieved into wave beam electric scanning according to certain forming array that puts in order.
Description
Technical field
The invention belongs to microwave antenna art field, and in particular to a kind of electric scanning plane reflection battle array based on RF switch
Antenna element.
Background technology
Phased array antenna with wave beam electric scanning ability is applied in terms of high rail satellite data communication.However,
The features such as its high cost, high loss, high weight and high complexity, limits certain applications.By comparison, using RF switch
Can wave beam electric scanning plane reflection array antenna having in terms of weight, power consumption and cost compared with the spaceborne phased array antenna of in general
Very big advantage, it simplifies the structure of phased array antenna, without the feeding network of complexity and the T/R modules of high cost, it is only necessary to
Low-loss phase-shift unit, this to have the plane reflection array antenna of electric scanning ability wide in survey of deep space, satellite communication etc.
Wealthy field, which is widely applied, to be possibly realized.
Plane reflection array antenna is to irradiate one group of flat or arbitrary shape surface with feed, artificial point on a surface
Some radiating elements of cloth, the unit of each careful design provides different reflected phases, and these reflected phases can just mend
The wave beam for repaying the one way or another sent by feed reaches the phase difference of assigned direction after plane reflection, thus can be
Plane wave front is formed in this direction, to reach the purpose of enhanced rad.That is, plane reflection battle array is putting down with careful design
Face reaches the antenna of parabola antenna top-surface camber effect.Plane reflection array antenna it is various informative, such as pacify literary magnitude people Shen
Please《Plane reflection array antenna》National inventing patent (the patent No.：) and Sun Ke et al. application ZL201410090071.5《Ku
Frequency band double-frequency dual-polarized, microstrip plane reflection array antenna》National inventing patent application (application number：CN201310486023.3).Before
Person devises a kind of plane reflection array antenna of fixed beam, is combined by adjusting the metal minor matters in each metal patch unit
Shape and size realize phase adjusted, so as to form equiphase surface in metal flat reflective array.The latter designs
A kind of dual-band and dual-polarization fixed beam plane reflection array antenna for working in Ku frequency ranges, it is each micro- on medium substrate by adjusting
Tape cell size, the space quadrature of compensation feed to front unit so that back wave realizes same phase in particular directions
Position superposition, forms pencil beam, reaches the purpose of high-gain.Currently, the phase in-migration that there are no control reflector element realizes that electricity is swept
The plane reflection array antenna correlation technique retouched.
The content of the invention
In view of this, the present invention provides a kind of electric scanning plane reflection array antenna unit based on RF switch, the antenna
Unit realizes the phase shift of unit using the break-make of RF switch, therefore by it according to certain forming array that puts in order
Realize wave beam electric scanning.
To achieve the above object, the present invention uses following technical scheme：
A kind of electric scanning plane reflection array antenna unit based on RF switch, mainly by patch layer, dielectric layer and ground connection
Flaggy forms；Wherein, the patch layer includes metal patch and at least one RF switch, and the metal patch is by outer shroud paster
Formed with center patch, the RF switch is connected between outer shroud paster and center patch.
Further, outer shroud paster of the present invention and center patch are square loop, and the outer length of side of outer shroud paster does not surpass
The length of side of dielectric layer is crossed, the outer length of side of center patch is less than the interior length of side of outer shroud paster；Formed between outer shroud paster and center patch
Annulus, RF switch equidistantly or are not equidistantly located between annulus, connect outer shroud paster and center patch.
Further, outer shroud paster of the present invention is square loop, and center patch is square, the outside of outer shroud paster
The long length of side no more than dielectric layer, the length of side of center patch are less than the interior length of side of outer shroud paster；Outer shroud paster and center patch it
Between form annulus, RF switch equidistantly or is not equidistantly located between annulus, connects outer shroud paster and center patch
Piece.
Further, 0.5~0.95 times of a length of dielectric layer length of side in the outside of outer shroud paster of the present invention.
Further, patch layer of the present invention is located at the top of dielectric layer, and ground panel is located at the lower section of dielectric layer.
Further, dielectric layer of the present invention is more than 2 layers, and between dielectric layer, ground panel is located at patch layer
The lower section of dielectric layer.
Further, dielectric layer of the present invention is 2 layers, and top dielectric cross section is square, is worked centered on the length of side
0.4~0.7 times of frequency, relative dielectric constant are not less than 2；Layer dielectric cross section is square, the length of side and top dielectric side
Length is equal, and relative dielectric constant is less than 2.
Further, earth plate cross section of the present invention is square, and the length of side is equal with the layer dielectric length of side.
Further, RF switch of the present invention is RF mems switches, PIN switches or FET switch.
Compared with prior art, the beneficial effects of the present invention are：
First, ordinary antennas unit is to realize phase shift by the change of size or the change of shape, when antenna element is true
After fixed, antenna element phase shift is fixed, thus can only realize fixed beam antenna.Inventive antenna unit is opened by radio frequency
The break-make of pass realizes unit phase shift, and relative bandwidth can reach more than 5%, have good broadband performance.For each true
Fixed antenna element can provide 2NIndividual phase shift state (N is RF switch number).After multiple units are combined into aerial array, pass through
Multigroup phase shift state preset can realize multiple beam positions, namely realize electric scanning plane reflection array antenna.
Second, for inventive antenna unit with the break-make of RF switch, reflected phase changes to 180 ° by -180 °, and
Phase place change is smoother, and relative bandwidth can reach more than 5%, and this contributes to the accurate of electric scanning plane reflection array antenna to set
Meter.
Brief description of the drawings
Fig. 1 is the schematic diagram of the electric scanning plane reflection array antenna unit of the invention based on RF switch.
Fig. 2 is the top view of the electric scanning Plane-reflective antenna unit of the invention based on RF switch.
Fig. 3 is the state of RF switch and the variation relation curve of reflection phase shift on antenna element.
Fig. 4 is 16 × 16 element array schematic diagrames designed using inventive antenna unit.
Fig. 5 is the gain pattern using 16 × 16 element array of inventive antenna unit design.
Wherein, 1- RF switches, 2- upper stratas paster, 3- top dielectrics, 4- layer dielectrics, 5- and earth plate.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment, technical scheme is described in detail.
It is a kind of optimal reality of electric scanning plane reflection array antenna unit based on RF switch of the present invention below
Example, therefore do not limit protection scope of the present invention.
Embodiment one：
A kind of electric scanning plane reflection array antenna unit based on RF switch, mainly by patch layer, dielectric layer and ground connection
Flaggy forms；Wherein, the patch layer includes metal patch and at least one RF switch, and the metal patch is by outer shroud paster
Formed with center patch, the RF switch is connected between outer shroud paster and center patch.
Outer shroud paster of the present invention and center patch are square loop, and the outer length of side of outer shroud paster is no more than dielectric layer
The length of side, at the same time it can also be that outer shroud paster is square loop, center patch is square, and the outer length of side of outer shroud paster is no more than
The length of side of dielectric layer；Annulus is formed between outer shroud paster and center patch, RF switch is equidistant or is not located at equidistantly
Between annulus, outer shroud paster and center patch are connected.Meanwhile preferably choose a length of dielectric layer side in outside of outer shroud paster
Long 0.5~0.95 times.
Meanwhile patch layer may be at the top of dielectric layer, when dielectric layer is more than 2 layers, patch layer is also in
The centre of dielectric layer.It it is 2 layers preferably from dielectric layer, top dielectric cross section is square, working frequency points centered on the length of side
0.4~0.7 times, relative dielectric constant be not less than 2；Layer dielectric cross section is square, the length of side and top dielectric length of side phase
It is less than 2 Deng, relative dielectric constant.
RF switch of the present invention is RF mems switches, PIN switches or FET switch.
Embodiment two：
As shown in figure 1, a kind of schematic diagram of the electric scanning plane reflection array antenna unit based on RF switch, includes and penetrates
Frequency switch 1, upper strata paster 2, top dielectric 3, layer dielectric 4 and earth plate 5.Wherein RF switch uses 5, unit design work
Make in 14GHz, unit is square, and the length of side is equal to 0.5 λ0, λ0For the wavelength in free space.Paster top dielectric thickness is
0.762mm, relative dielectric constant 3.66；Paster layer dielectric thickness is 2mm, relative dielectric constant 1.05；Orlop is
Earth plate.
Fig. 2 shows the top view of antenna element, 5 RF switches be installed on upper strata paster 2 two square loops it
Between, 5 switch not equidistantly distributed.
Fig. 3 shows the on off state of unit and the variation relation curve of reflection phase shift.By controlling the logical of RF switch
Disconnected, 5 switches share 25=32 states, each state corresponds to a phase shift respectively, by the position for reasonably optimizing switch
And then form smooth continuous state --- phase-shift curve.With the break-make of 5 RF switches, reflected phase is by -180 ° of changes
To 180 °, and phase place change is smoother, and this contributes to the careful design of antenna.
Fig. 4 shows 16 × 16 element array examples designed using the unit, and center of antenna frequency is 14GHz, line
Polarize work, and array uses square layout.
Fig. 5 shows the gain pattern design result of 16 × 16 element array using unit design, and design plane is anti-
The scanning angle for penetrating array antenna is 0 °, 15 °, 30 °, 40 ° and 45 °, and with the increase of beam pointing-angle, gain decreases, other
Valve level raises, and when beam position is 45 °, gain declines about 2.4dB, and sidelobe level slightly raises.Using the electricity of the unit
Plane of scanning motion reflective array antenna has good wide-angle beam scan capability, and beam-scanning angles can reach more than 45 °, card
Understand that invented unit has superperformance.
Embodiment described above only expresses one embodiment of the present invention, and it is described more in detail specifically, but simultaneously
Therefore the limitation to the scope of the claims of the present invention can not be interpreted as.It should be pointed out that for one of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the guarantor of the present invention
Protect scope.
Claims (9)
1. a kind of electric scanning plane reflection array antenna unit based on RF switch, it is characterised in that mainly by patch layer, medium
Layer and ground panel composition；Wherein, the patch layer includes metal patch and at least one RF switch, the metal patch by
Outer shroud paster and center patch are formed, and the RF switch is connected between outer shroud paster and center patch.
2. the electric scanning plane reflection array antenna unit based on RF switch according to claim 1, it is characterised in that described
Outer shroud paster and center patch are square loop, and the outer length of side of outer shroud paster is no more than the length of side of dielectric layer, center patch outside
The long interior length of side less than outer shroud paster.
3. the electric scanning plane reflection array antenna unit based on RF switch according to claim 1, it is characterised in that described
Outer shroud paster is square loop, and center patch is square, and the outer length of side of outer shroud paster is no more than the length of side of dielectric layer, center patch
The length of side of piece is less than the interior length of side of outer shroud paster.
4. the electric scanning plane reflection array antenna unit based on RF switch according to Claims 2 or 3, it is characterised in that
0.5~0.95 times of a length of dielectric layer length of side in outside of the outer shroud paster.
5. the electric scanning plane reflection array antenna unit based on RF switch according to claim 1, it is characterised in that described
Patch layer is located at the top of dielectric layer, and ground panel is located at the lower section of dielectric layer.
6. the electric scanning plane reflection array antenna unit based on RF switch according to claim 1, it is characterised in that described
Dielectric layer is more than 2 layers, and for patch layer between dielectric layer, ground panel is located at the lower section of dielectric layer.
7. the electric scanning plane reflection array antenna unit based on RF switch according to claim 6, it is characterised in that described
Dielectric layer is 2 layers, and top dielectric cross section is square, and 0.4~0.7 times of working frequency points, normal with respect to dielectric centered on the length of side
Number is not less than 2；Layer dielectric cross section is square, and the length of side is equal with the top dielectric length of side, and relative dielectric constant is less than 2.
8. the electric scanning plane reflection array antenna unit based on RF switch according to claim 7, it is characterised in that described
Earth plate cross section is square, and the length of side is equal with the layer dielectric length of side.
9. the electric scanning plane reflection array antenna unit based on RF switch according to claim 1, it is characterised in that described
RF switch is RF mems switches, PIN switches or FET switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710417401.0A CN107403993A (en) | 2017-06-06 | 2017-06-06 | A kind of electric scanning plane reflection array antenna unit based on RF switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710417401.0A CN107403993A (en) | 2017-06-06 | 2017-06-06 | A kind of electric scanning plane reflection array antenna unit based on RF switch |
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| Publication Number | Publication Date |
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| CN107403993A true CN107403993A (en) | 2017-11-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710417401.0A Pending CN107403993A (en) | 2017-06-06 | 2017-06-06 | A kind of electric scanning plane reflection array antenna unit based on RF switch |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109273842A (en) * | 2018-09-17 | 2019-01-25 | 清华大学 | The phased array antenna unit of the MEMS phase shifter of back-to-back multilayer lamination structure |
| CN110649397A (en) * | 2019-09-27 | 2020-01-03 | 中国电子科技集团公司第三十八研究所 | Reconfigurable planar reflective array antenna of integrated reflective array |
| CN111987469A (en) * | 2020-07-24 | 2020-11-24 | 东南大学 | Reflection super surface and antenna of two linear polarization independent control |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103367890A (en) * | 2013-05-08 | 2013-10-23 | 西安电子科技大学 | Dual-frequency microstrip directional-diagram reconfigurable antenna |
| CN106207468A (en) * | 2016-06-28 | 2016-12-07 | 西安电子科技大学 | A kind of dual-band and dual-polarization lobin microstrip reflectarray antenna |
-
2017
- 2017-06-06 CN CN201710417401.0A patent/CN107403993A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103367890A (en) * | 2013-05-08 | 2013-10-23 | 西安电子科技大学 | Dual-frequency microstrip directional-diagram reconfigurable antenna |
| CN106207468A (en) * | 2016-06-28 | 2016-12-07 | 西安电子科技大学 | A kind of dual-band and dual-polarization lobin microstrip reflectarray antenna |
Non-Patent Citations (1)
| Title |
|---|
| 刘肖肖: "可重构平面反射阵天线研究", 《中国优秀硕士学位论文全文数据库》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109273842A (en) * | 2018-09-17 | 2019-01-25 | 清华大学 | The phased array antenna unit of the MEMS phase shifter of back-to-back multilayer lamination structure |
| CN110649397A (en) * | 2019-09-27 | 2020-01-03 | 中国电子科技集团公司第三十八研究所 | Reconfigurable planar reflective array antenna of integrated reflective array |
| CN110649397B (en) * | 2019-09-27 | 2021-05-18 | 中国电子科技集团公司第三十八研究所 | Reconfigurable planar reflective array antenna of integrated reflective array |
| CN111987469A (en) * | 2020-07-24 | 2020-11-24 | 东南大学 | Reflection super surface and antenna of two linear polarization independent control |
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Application publication date: 20171128 |
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