CN106159462A - A kind of compact millimeter wave monopulse antenna - Google Patents
A kind of compact millimeter wave monopulse antenna Download PDFInfo
- Publication number
- CN106159462A CN106159462A CN201610498240.8A CN201610498240A CN106159462A CN 106159462 A CN106159462 A CN 106159462A CN 201610498240 A CN201610498240 A CN 201610498240A CN 106159462 A CN106159462 A CN 106159462A
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- antenna
- reflection surface
- primary reflection
- sum
- subreflector
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
-
- 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
- H01Q13/02—Waveguide horns
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
- H01Q15/14—Reflecting surfaces; Equivalent structures
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Aerials With Secondary Devices (AREA)
- Waveguide Aerials (AREA)
Abstract
A kind of compact millimeter wave monopulse antenna of this disclosure of the invention, belongs to antenna technical field.Inventive antenna includes feed, primary reflection surface, subreflector, supporting construction and sum-difference network.Wherein primary reflection surface and subreflector all employ research of planar reflectarray antennas, and sum-difference network is also planar structure, therefore, compared with traditional monopulse antenna, the monopulse antenna of the present invention has that volume is little, lightweight, be easy to the advantage that is connected with other integrated high frequency components.
Description
Technical field
The invention belongs to antenna technical field, be specifically related to a kind of compact millimeter wave monopulse antenna, can be used for reducing
The volume of traditional single pulse antenna, quality, improve the integrated level of monopulse antenna and system.
Background technology
Millimeter wave belongs to the wave-length coverage that microwave overlaps mutually with far infrared wave, it have distinctive characteristics of atmospheric transmission, can
The bandwidth utilizing and the short three big features of millimetre wavelength.Distinctive characteristics of atmospheric transmission makes millimeter wave antenna utilize air
Window is decayed little when propagating, affected little by nature light and heat radiation source；Available bandwidth is beneficial to millimeter wave antenna and reduces multipath
Effect and clutter reduction impact, strengthen the antijamming capability of system；Millimetre wavelength is short, it is meant that milli under same antenna size
Metric wave aerial wave beam is more much narrower than the wave beam of microwave antenna, i.e. millimeter wave antenna can provide the resolving power of higher precision.
Monopulse antenna is at appearance after World War II a kind of precision tracking antenna developing rapidly in five sixties.
Monopulse antenna can provide multiple wave beam simultaneously, utilizes individual pulse echo to form detection target range and goes forward side by side what row distance was followed the tracks of
And wave beam, and two azimuths detecting targets and angle of pitch information the difference beam carrying out angle tracking.When target location is proper
Be positioned at well with on wave beam maximum direction, then difference beam receive signal very weak (close to zero).When target location changes
Become, then the signal that difference beam receives changes from weak to strong.Therefore, servo control mechanism can be driven according to difference signal situation of change, make antenna
Orientation or pitch orientation rotate until the maximum direction with wave beam to standard target, thus realizes the tracking of target.
Cassegrain antenna is one of the most frequently used form of monopulse antenna, its basic structure include feed, primary reflection surface,
Subreflector, supporting construction and sum-difference network.Its basic functional principle is to utilize two reflectings surface by incident infinite ray
Focus on a bit.Compared with the parabola antenna in single reflection face, Cassegrain antenna has that axial dimension is short, noise temperature is low,
Keep in repair the outstanding advantages such as easy to adjust and effective focal length length.
Patent No. CN201210330178.3, the method for designing of entitled a kind of W-wave band single-pulse Cassegrain antenna
Propose the method for designing of a kind of traditional single pulse antenna.Although being conducive to overcoming based on the monopulse antenna designed by the method
Tradition conical scanning is sensitive to echo amplitude fluctuating with order wave beam conversion, greatly and W-waveband antenna is difficult and system for tracking error
Integrated shortcoming.But involved parabola antenna is heavy, bulky, and the sum-difference network structure of waveguiding structure is complicated,
Make monopulse antenna processing cost big, be unfavorable for compact designed.
Content of the invention
It is an object of the invention to overcome that traditional single pulse antenna body is heavy, bulky, it is integrated with other to be difficult to
The shortcomings such as high frequency component is connected, it is proposed that a kind of compact millimeter wave monopulse antenna.
The present invention adopts the following technical scheme that
A kind of compact millimeter wave monopulse antenna, including feed, primary reflection surface, subreflector, supporting construction and and
Difference network.
Described supporting construction includes primary reflection surface substrate, subreflector substrate and fixes both support bars, Yi Jihe
Difference network substrate.
The circular flat reflectarray antenna of opening centered on described primary reflection surface, and be fixed on primary reflection surface substrate.
Described subreflector is the research of planar reflectarray antennas being arranged at directly over primary reflection surface, by subreflector substrate
Fixing.
Described feed is electromagnetic horn, is arranged at primary reflection surface central opening, connects rear end and poor net by flange
Network substrate, and make feed keep the feeding classification just presented.
Described sum-difference network uses the form of substrate integration wave-guide, and sum-difference network is positioned between two sum-difference network substrates,
And it is fixed on primary reflection surface substrate back, provide and difference signal for monopulse antenna.
Described primary reflection surface antenna and subreflector antenna are made up of two-layered medium plate, including fit successively from top to bottom
The first metal layer, first medium layer, the second metal level and second dielectric layer, wherein two metal levels are by some square patch week
Phase rearranges, and patch size and distribution are calculated by space quadrature.
In the present invention, primary reflection surface and subreflector all use research of planar reflectarray antennas, and research of planar reflectarray antennas base
The cyclic array that this structure is made up of a large amount of passive resonance unit, when feed by electromagenetic wave radiation to planar-periodic reflective array
On face, on reflection front, the difference of each resonant element structure can be with compensation space phase difference, so that back wave is at predetermined spoke
Penetrate and on the vertical plane in direction, realize equiphase superposition, form the pencil beam of high-gain.Wherein unit compensation space quadrature
Mode mainly changes what the size of resonant element own, the anglec of rotation changing resonant element and change resonant element were connected
Phase delay line length.
Sum-difference network is to use substrate integrated waveguide technology to design, and it is that to make two rows on dielectric substrate equidistant
Plated-through hole, between the metal covering up and down of dielectric substrate and two row's plated-through holes formed a similar rectangular waveguide knot
Structure, electromagnetic wave is just propagated in the rectangular area that two row's metal throuth holes and dielectric substrate upper and lower surface are surrounded.Change metallization
The modes such as lead to the hole site, increase or reduction plated-through hole quantity can form a number of phase shifter and coupler, passes through
The putting position of optimization design phase shifter and coupler can design and obtain sum-difference network.
Compared to prior art, beneficial effects of the present invention:
(1) owing to the primary reflection surface of the present invention all employs research of planar reflectarray antennas with subreflector, sum-difference network is also
Being planar structure, therefore, compared with traditional monopulse antenna, the volume of the monopulse antenna of the present invention is little, lightweight.
(2) accuracy of manufacture is high, processing cost is low, can produce in batches.Make processing and fluting work compared to metal waveguide
Skill, the manufacturing process such as ripe PCB, LTCC not only makes its processing cost be greatly lowered, also improves the accuracy of manufacture simultaneously, this
Ensure that the monopulse antenna processed finished products of the present invention readily satisfies design and requires, it is not necessary to the mistake occurring in process
Difference is modified, and provides possibility for large-scale mass production.
(3) sum-difference network uses substrate integration wave-guide form, and uses standard waveguide to feed, and feeder loss is moderate simultaneously
And be easy to carry out electrically being connected with structure with antenna assembly rear module, substantially increase the integrated level of monopulse antenna.
Brief description
Fig. 1. compact monopulse antenna overall schematic in the specific embodiment of the invention.
Fig. 2. compact monopulse antenna side view in the specific embodiment of the invention.
Fig. 3. compact monopulse antenna dorsal view in the specific embodiment of the invention.
Fig. 4. four horn feed overall construction drawing in the specific embodiment of the invention.
Fig. 5. specific embodiment of the invention midplane reflectarray antenna cellular construction figure.
Fig. 6. in the specific embodiment of the invention, in compact monopulse antenna primary reflection surface the first metal layer, cell distribution is shown
It is intended to.
Fig. 7. in the specific embodiment of the invention, in compact monopulse antenna primary reflection surface the second metal level, cell distribution is shown
It is intended to.
Fig. 8. in the specific embodiment of the invention, in compact monopulse antenna subreflector the first metal layer, cell distribution is shown
It is intended to.
Fig. 9. in the specific embodiment of the invention, in compact monopulse antenna subreflector the second metal level, cell distribution is shown
It is intended to.
Figure 10. compact monopulse antenna sum-difference network structural representation in the specific embodiment of the invention.
Figure 11. compact monopulse antenna and the wave beam directional diagram when frequency 35GHz in the specific embodiment of the invention.
Figure 12. in the specific embodiment of the invention, compact monopulse antenna gun parallax wave beam and trim wave beam are at frequency
Directional diagram at 35GHz.
Drawing reference numeral illustrates: 1. primary reflection surface；2. support bar；3. subreflector；4. Monopulse feed；5. sum-difference network；
6. sum-difference network substrate；7. primary reflection surface substrate；8. subreflector substrate；9. fixedly mount hole；10. pin hole；11. first gold medals
Belong to layer；12. first medium layers；13. second metal levels；14. second dielectric layer；15.90 ° phase shifter；16.3dB coupler；17.
Sum-difference network and port；18. sum-difference network trim ports；19. sum-difference network gun parallax ports；20. sum-difference networks absorb negative
Load port.
Detailed description of the invention
In order to better illustrate objects and advantages of the present invention, below in conjunction with the accompanying drawings with detailed description of the invention in the present invention
Appearance is described further.
The present invention is soaring with Ka wave band, the compact simple venation that primary reflection surface bore is as 170mm, subreflector bore is as 48mm
As a example by line, present invention is illustrated.
See Fig. 1, Fig. 2 and Fig. 3, the present embodiment tightly play type monopulse antenna by primary reflection surface the 1st, supporting construction, pair
Reflecting surface the 3rd, feed the 4th, sum-difference network 5 is constituted.Supporting construction includes sum-difference network substrate the 6th, primary reflection surface substrate the 7th, subreflector
Substrate 8 and fixing both three support bars 2 of connection.
Described primary reflection surface 1 is fixed on primary reflection surface substrate 7, and center is provided with the hole that bore is 40mm, is used for feed 4
It is connected with sum-difference network 5.Sum-difference network 5 is positioned between two sum-difference network substrates 6, and is fixed on primary reflection surface lining by screw
The back side at the end 7.Subreflector 3 fits on subreflector substrate 8, is positioned at directly over primary reflection surface 1 at 52mm.
Primary reflection surface 1 and subreflector 3 all use research of planar reflectarray antennas, it is contemplated that change unit size and compensate list
Unit's phase place, not only has more excellent broadband and multipolarization performance, and radiation efficiency is high, the also more letter of design of Simulation and processing simultaneously
Single, therefore, in the implementation case, array element compensates phase place mode and selects to change the size of resonant element own, and involved list
Unit has double-decker, so not only can make the Phase-Shifting Characteristics needed for unit, and be conducive to increasing the beamwidth of antenna, cellular construction
See Fig. 5.In order to avoid graing lobe occurs in antenna, array element cycle size L is 3mm (about 0.35 λ).The first metal layer 11 and
The square patch of two metal levels 13 lays respectively at the upper surface of first medium layer the 12nd, second dielectric layer 14, the base sheet of dielectric layer
Material uses Rogers5880, and dielectric constant 2.2, loss tangent is 0.0009, and dielectric substrate thickness is 20mil.Assume
In two metal levels 13, side's paster length of side is a, then in the first metal layer 11, side's paster length of side is 0.6 × a, be can get by changing a
Unit phase shift curve.
The present embodiment utilizes the optical path difference of feed phase center each unit center to primary reflection surface, subreflector to calculate
Go out to need the phase place compensating, said units phase shift curve be can determine that reflection front each unit size, finally by printed circuit
Plate technique can get the first metal layer and the second metal level in primary reflection surface 1, the first metal layer and the second metal in subreflector 3
Laminating blade unit distribution situation, as shown in figs 6-8.
Present case feed 4 uses four horn feeds, is arranged at primary reflection surface central opening, and is positioned over subreflector 3
At the 27.5mm of underface, and being fixed on sum-difference network substrate 6 upper surface by flange, adjusting feed location makes it just to present mode
Feed, see Fig. 4.
Seeing Figure 10, sum-difference network 5 involved in the present embodiment is by 16 and 4 the 90 degree of phase shifts of 4 3dB directional couplers
Device 15 forms, and sum-difference network overall dimensions is 95mm × 100mm, and the medium substrate of selection is that (dielectric constant is Rogers 5880
2.2nd, loss tangent the 0.0009th, thickness is 20mil).Sum-difference network substrate 6 is the aluminium sheet that two pieces of thickness is 3mm, and its effect is
Fix for sum-difference network with the headend equipment such as feed, primary reflection surface and monopulse receiver rear end equipment and install.
In microwave dark room, correct monopulse antenna and port, gun parallax port, trim port are installed in measurement respectively
The characterisitic parameter such as directional diagram and gain, test result is as shown in Figure 11 and Figure 12.As can be seen from the figure designed pulse
Antenna is 29.5dBi in the maximum gain of 35GHz, and first minor level in E face and H face is respectively-14.9dB and-15.7dB.
Confirm that indices meets to require, complete the design of a kind of Ka wave band compact monopulse antenna.
Examples detailed above is only technology design and the feature that the present invention is described, is served only for being specifically described the present invention,
Make one of ordinary skilled in the art will appreciate that present disclosure and implement according to this, the protection of the present invention can not be limited with this
Scope.All equivalences made according to present invention change or modify, and all should cover within protection scope of the present invention.
Claims (2)
1. a compact millimeter wave monopulse antenna, including feed, primary reflection surface, subreflector, supporting construction and and poor
Network, it is characterised in that:
Described supporting construction includes primary reflection surface substrate, subreflector substrate, the support bar fixing both and sum-difference network lining
The end；
The circular flat reflectarray antenna of opening centered on described primary reflection surface, and be arranged on primary reflection surface substrate；
Described subreflector is the research of planar reflectarray antennas being arranged at directly over primary reflection surface, solid by subreflector substrate
Fixed；
Described feed is electromagnetic horn, is arranged at primary reflection surface central opening, is connected the sum-difference network lining of rear end by flange
The end, and the feeding classification that feed holding is just being presented；
Described sum-difference network uses the form of substrate integration wave-guide, and sum-difference network is positioned between two sum-difference network substrates, and solid
Due to primary reflection surface substrate back, provide and difference signal for monopulse antenna.
2. a kind of compact millimeter wave monopulse antenna as claimed in claim 1, it is characterised in that: described primary reflection surface antenna
Be made up of two-layered medium plate with subreflector antenna, including the first metal layer fitted successively from top to bottom, first medium layer,
Two metal levels and second dielectric layer, wherein two metal levels are made up of some square patch periodic arrangement, patch size and distribution
It is calculated by space quadrature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610498240.8A CN106159462A (en) | 2016-06-29 | 2016-06-29 | A kind of compact millimeter wave monopulse antenna |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610498240.8A CN106159462A (en) | 2016-06-29 | 2016-06-29 | A kind of compact millimeter wave monopulse antenna |
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| CN106159462A true CN106159462A (en) | 2016-11-23 |
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| CN201610498240.8A Pending CN106159462A (en) | 2016-06-29 | 2016-06-29 | A kind of compact millimeter wave monopulse antenna |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107978840A (en) * | 2017-12-25 | 2018-05-01 | 合肥若森智能科技有限公司 | A kind of dual-linear polarization antenna feed array component |
| CN108346852A (en) * | 2018-01-30 | 2018-07-31 | 东南大学 | A kind of millimeter wave multibeam antenna used for positioning |
| CN109066085A (en) * | 2018-08-01 | 2018-12-21 | 中国航空工业集团公司雷华电子技术研究所 | Dual-polarized single pulse tracks reflecting plane aerial feed source |
| CN109167182A (en) * | 2018-07-31 | 2019-01-08 | 电子科技大学 | A kind of printing-type low section feed antenna for the pulse reflector antenna that feedovers |
| CN109462017A (en) * | 2018-10-25 | 2019-03-12 | 东南大学 | A kind of circular polarisation pulse Cassegrain antenna |
| CN113206387A (en) * | 2021-04-22 | 2021-08-03 | 电子科技大学 | Wide-bandwidth terahertz quasi-optical sum-difference comparator |
| CN113839211A (en) * | 2021-08-30 | 2021-12-24 | 电子科技大学 | Cassegrain monopulse antenna based on planar array structure |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107978840A (en) * | 2017-12-25 | 2018-05-01 | 合肥若森智能科技有限公司 | A kind of dual-linear polarization antenna feed array component |
| CN107978840B (en) * | 2017-12-25 | 2023-10-17 | 合肥若森智能科技有限公司 | Dual-polarized antenna feed source array assembly |
| CN108346852A (en) * | 2018-01-30 | 2018-07-31 | 东南大学 | A kind of millimeter wave multibeam antenna used for positioning |
| CN109167182A (en) * | 2018-07-31 | 2019-01-08 | 电子科技大学 | A kind of printing-type low section feed antenna for the pulse reflector antenna that feedovers |
| CN109167182B (en) * | 2018-07-31 | 2021-06-01 | 电子科技大学 | Printed low-profile feed antenna for feedforward monopulse reflector antenna |
| CN109066085A (en) * | 2018-08-01 | 2018-12-21 | 中国航空工业集团公司雷华电子技术研究所 | Dual-polarized single pulse tracks reflecting plane aerial feed source |
| CN109066085B (en) * | 2018-08-01 | 2021-02-19 | 中国航空工业集团公司雷华电子技术研究所 | Dual-polarized monopulse tracking reflector antenna feed source |
| CN109462017A (en) * | 2018-10-25 | 2019-03-12 | 东南大学 | A kind of circular polarisation pulse Cassegrain antenna |
| CN113206387A (en) * | 2021-04-22 | 2021-08-03 | 电子科技大学 | Wide-bandwidth terahertz quasi-optical sum-difference comparator |
| CN113839211A (en) * | 2021-08-30 | 2021-12-24 | 电子科技大学 | Cassegrain monopulse antenna based on planar array structure |
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Application publication date: 20161123 |