CN106571521B - A kind of high temperature resistant antenna - Google Patents
A kind of high temperature resistant antenna Download PDFInfo
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- CN106571521B CN106571521B CN201610926648.0A CN201610926648A CN106571521B CN 106571521 B CN106571521 B CN 106571521B CN 201610926648 A CN201610926648 A CN 201610926648A CN 106571521 B CN106571521 B CN 106571521B
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- antenna
- high temperature
- waveguide
- temperature resistant
- feed waveguide
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/42—Housings not intimately mechanically associated with radiating elements, e.g. radome
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/27—Adaptation for use in or on movable bodies
- H01Q1/28—Adaptation for use in or on aircraft, missiles, satellites, or balloons
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/27—Adaptation for use in or on movable bodies
- H01Q1/28—Adaptation for use in or on aircraft, missiles, satellites, or balloons
- H01Q1/285—Aircraft wire antennas
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2039—Modifications to facilitate cooling, ventilating, or heating characterised by the heat transfer by conduction from the heat generating element to a dissipating body
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Aviation & Aerospace Engineering (AREA)
- Remote Sensing (AREA)
- Astronomy & Astrophysics (AREA)
- General Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Waveguide Aerials (AREA)
- Details Of Aerials (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
A kind of high temperature resistant antenna includes antenna body, the antenna house being mounted on the outside of antenna body and the thermal capacity flash vessel being arranged on antenna body.The present invention, which is used, absorbs the heat radiated from radome wall with the integrally formed thermal capacity flash vessel of waveguide, to reduce the heating rate of antenna structure part, reduce the high temperature impact to components such as connectors, present invention layout is ingenious, structure novel, it can satisfy high temperature resistant demand of the antenna in small space, it is ensured that electric property is reliable and stable under high temperature environment for antenna, has very strong practicability and application prospect.
Description
Technical field
The present invention relates to a kind of high temperature resistant antennas.
Background technique
With the fast development of modern communication and space technology, antenna is as the carrier for radiating and receiving electromagnetic wave, to small
Type, can demand conformal with carrier, adapting to extreme environment antenna it is increasing.When contemporary aircraft high-speed flight, due to
By the impact of high-speed flow, the antenna for being installed on its surface can be for a long time among hot environment, if it is anti-not carry out heat to it
Shield processing, the risk that antenna will be faced with high-temperature capability deficiency and fail, it would be highly desirable to be resolved.
The existing open report for high temperature resistant antenna is less, is concentrated mainly on the civil fields such as low frequency, low speed.
Patent CN202977726U (" high temperature resistant antenna ") is using the antenna house made of heat-resisting material to day
Line carries out thermal protection, and wraps up antenna body with insulation material layer, farthest to ensure that antenna is electrical under high temperature environment
Performance it is reliable and stable.Though this method can significantly improve the high-temperature stability of antenna, it is only applicable to low-frequency antenna, to high frequency
Its loss of section antenna can not ignore, even be unable to wave transparent completely.
Patent CN105057826A (" a kind of vacuum brazing method of electronic fuse antenna radiator ") describes one kind
The vacuum brazing method of high temperature resistant fuze antenna, but Principle of Antenna is not designed and enhances method resistant to high temperature and makees associated description.
" Ka wave band broad beam is resistance to for document disclosed in " national microwave and millimeter wave proceeding in 2013 " magazines in 2013
The research of high-temperature medium antenna ", the design principle based on dielectric-rod antenna and medium resonator antenna proposes a dielectric rod-
Resonant aerial, which has preferable heat-proof quality and preferably electric property, but the antenna size is larger, when installation
It is unsatisfactory for pneumatically requiring, and is not suitable for the antenna of beam tilt.
Document disclosed in " telecom technology " magazine in 2012 " the S frequency range novel fire resistant Antenna Design based on LTCC ",
A kind of paster antenna that can bear 400 DEG C of high temperature is described, the key technology of the document is by low-temperature co-fired ceramics and tradition
Paster antenna combined.The aerial loss is big, it is difficult to apply in millimere-wave band.In addition, ceramic bases material is hard, nothing
Method is realized conformal with carrier.
Currently, the report about high temperature resistant antenna research field is less, therefore research is easily achieved, Sidelobe, high radiation
The high temperature resistant antenna of efficiency becomes more and more important.
Summary of the invention
The present invention provides a kind of high temperature resistant antenna, absorbs using with the integrally formed thermal capacity flash vessel of waveguide from antenna house
The heat of wall radiation reduces the high temperature impact to components such as connectors to reduce the heating rate of antenna structure part, this
Inventive layout is ingenious, structure novel, can satisfy high temperature resistant demand of the antenna in small space, it is ensured that antenna is in hot environment
Lower electric property is reliable and stable, has very strong practicability and application prospect.
In order to achieve the above object, the present invention provides a kind of high temperature resistant antenna, includes: antenna body is mounted on antenna sheet
The antenna house of external side and the thermal capacity flash vessel being arranged on antenna body；
The antenna body includes:
Radiating slot is arranged in the radiating guide in radiating guide；
Feed waveguide, one end are in 90 degree of orthogonal connections with one end of radiating guide；
Waveguide is connected with the other end of radiating guide；
Connector is arranged on feed waveguide, and probes into feed waveguide cavity；
Absorbing load is arranged in waveguide end；
Short-circuit block is arranged in feed waveguide end；
Heat insulating mattress is arranged between feed waveguide and connector；
The thermal capacity flash vessel and feed waveguide is in integral structure, between radiating guide and connector,
The thermal capacity flash vessel includes:
Multiple metal arrays, it includes multiple metal columns arranged in the form of an array, which is in feed waveguide
Integral structure；
Ring flange is located at around metal array, and the ring flange and feed waveguide are in integral structure；
Multiple non-metallic devices, are fixedly mounted on ring flange, are set on metal array and contact metal array.
The feed waveguide is identical as the internal chamber wall size of radiating guide, the internal chamber wall of the waveguide and radiating guide
Size is identical.
The side setting parallel resonance formula continuous radiation of the broadside center line of the radiating guide is stitched, the length of radiating slot
It is all adjustable for deviateing the distance of waveguide core line with radiating slot.
The calculation method that the radiating slot deviates the distance of waveguide core line includes:
The distribution of line surface current can be calculated based on formula (1) and formula (2):
In formula:η=- 20lg [cos (π A)], η are minor level, and A is an intermediate change
Amount；P is an intermediate variable,R is antenna aperture, and x is when equidistantly sampling, among sample point distance arrays
Distance；Number serial number when m is summation is terminated in since 1Number serial number when n is quadrature, is opened from 1
Begin, terminates in It is a positive integer for equal minor lobes number；
Calculated current value is equivalent to conductance, finds out linear array gap using the formula (3) of conductance g and deviates waveguide core line
A series of distance values:
In formula: a is waveguide broadside size；B is waveguide narrow side size；λ is wavelength；λgFor waveguide wavelength；D is radiating slot
Distance apart from waveguide broadside center line.
The heat insulating mattress includes the pad of central through hole and centrally disposed through hole wall outer, and central through hole passes through
Metalized, the upper surface of heat insulating mattress is arranged at central through hole hole wall for pad and lower surface is close to central through hole hole
At wall.
The heat insulating mattress uses nonmetallic polyfluortetraethylene plate.
Radiating guide and feed waveguide are connected using vacuum brazing method.
The material of the antenna house uses the quartzy slurry high temperature sintering of addition in quartz fibre 3 D weaving body to form,
The shape of antenna house and carrier are conformal.
The non-metallic device includes multiple sizes and position all with the matched through-hole of metal column, which contacts metal
Column.
The material of the non-metallic device uses polyimides.
The present invention provides the low sidelobe antenna that can work under high Aerodynamic Heating environment of one kind, using with waveguide one at
The thermal capacity flash vessel of type absorbs the heat radiated from radome wall, to reduce the heating rate of antenna structure part, reduces
To the high temperature impact of the components such as connector, the present invention is laid out ingenious, structure novel, can satisfy antenna in small space
High temperature resistant demand, it is ensured that electric property is reliable and stable under high temperature environment for antenna, has very strong practicability and application prospect.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of high temperature resistant antenna provided by the invention.
Fig. 2 is the structural schematic diagram of antenna body.
Fig. 3 is the top view of radiating guide.
Fig. 4 is the top view of heat insulating mattress.
Fig. 5 and Fig. 6 is the structural schematic diagram of thermal capacity flash vessel.
Specific embodiment
Below according to FIG. 1 to FIG. 6, presently preferred embodiments of the present invention is illustrated.
As shown in Figure 1, the present invention provides a kind of high temperature resistant antenna, include: antenna body 10 is mounted on outside antenna body 10
The antenna house 20 of side and the thermal capacity flash vessel 30 being arranged on antenna body 10, the antenna body 10 is for radiating
Electromagnetic wave simultaneously receives the electromagnetic wave echo from target, and the antenna house 20 is complete by the antenna body 10 being installed on carrier
It covers in, antenna is avoided to be directly exposed in high-speed flow, protect antenna body 10 from the influence of external hot-fluid, have heat-insulated
With wave transparent function, and meet it is pneumatic require, the thermal capacity flash vessel 30 is used to expand the thermal capacity of fuse, reduces antenna sheet
The temperature rise rate of body 10.
As shown in Fig. 2, the antenna body 10 includes:
Radiating guide 101, the radiating guide 101 are single rectangular waveguide, and internal chamber wall size is by aerial radiation wave beam
Tilt angle determines, radiating slot is arranged in the radiating guide 101, is used for radiation energy；
Feed waveguide 102, one end and one end of radiating guide 101 are in 90 degree of orthogonal connections, the feed waveguide 102 it is interior
Cavity wall size is identical as radiating guide 101, the feed waveguide 102 for feed and as connector 104, short-circuit block 106 and every
The carrier of heat pad piece 107；
Waveguide 103 is connected with the other end of radiating guide 101, the internal chamber wall size and radiating guide of the waveguide 103
101 is identical, the carrier as assembly absorbing load 105；
Connector 104 is arranged on feed waveguide 102, and probes into 102 cavity of feed waveguide, the connector
104 distance apart from 102 end of feed waveguide and connector 104 102 cavity of feed waveguide probe into depth realize jointly from
Feed waveguide 102 arrives the impedance matching of connector 104, to realize from waveguide to coaxial conversion；
Absorbing load 105, setting are remained in 103 end of waveguide for absorbing radiating slot radiation in waveguide 101 via radiation
Remaining energy；
Short-circuit block 106, setting is in 102 end of feed waveguide, for making waveguide form a closed space；
Heat insulating mattress 107 is arranged between feed waveguide 102 and connector 104, for that will pass through thermal capacity flash vessel
Remaining hot-fluid isolation after absorption, avoids remaining hot-fluid impact connector 103.
Screw 108, effect is that connector 104 and heat insulating mattress 107 are fixedly mounted on feed waveguide 102.
Longitudinal parallel connection gap in the Guide of Wide Wall of the radiating guide 101, and be the one of waveguide broadside center line
A series of resonant mode radiating slots are opened in side, adjust day by changing offset or dish of the gap with respect to waveguide core and fine tuning gap length
The resonance degree and minor lobe of line.
The length of radiating slot is approximately the half of working frequency, and the length of radiating slot is by gap width, clearance distance waveguide
The distance of center line, the factors such as thickness of wave guide wall have relationship.
As shown in figure 3, a continuous radiation, which is arranged, in the side of 101 broadside center line 1011 of radiating guide stitches 1012, day
The Aperture field distribution of line is weighted design by tyler linear arrays, and Taylor's distribution is obtained for continuous linear array, in practice
It is by sampling ideal distribution discretization.
The distribution of line surface current can be calculated based on formula (1) and formula (2):
In formula:η=- 20lg [cos (π A)], η are minor level, and A is an intermediate change
Amount；P is an intermediate variable,R is antenna aperture, and x is when equidistantly sampling, among sample point distance arrays
Distance；Number serial number when m is summation is terminated in since 1Number serial number when n is quadrature, is opened from 1
Begin, terminates in
Wherein,For equal minor lobes number, it is a positive integer, 6 is taken in the present embodiment, the bigger distribution of the value is closer
Chebyshev distribution, minor level takes -35dB in the present embodiment, it is to be calculated go out linear array current distribution after, can use electric current
What the equivalent relation between shunt conductance and the conductance based on the longitudinal seam in parallel of broadside and clearance distance waveguide core line-spacing were sowed discord
Relationship utilizes a series of distance values that deviation waveguide core line in linear array gap is found out shown in the calculation formula (3) of conductance g.
In formula: a is waveguide broadside size；B is waveguide narrow side size；λ is wavelength；λgFor waveguide wavelength；D is radiating slot
Distance apart from waveguide broadside center line.
As shown in figure 4, the heat insulating mattress 107 is fixed on outside feed waveguide 102 in such a way that half flush type is mounted
On wall, which includes the pad 1072 of central through hole 1071 and centrally disposed through hole wall outer, central through hole
1071 pass through metalized, and the upper surface of heat insulating mattress 107 is arranged at central through hole hole wall and following table in pad 1072
Face is at central through hole hole wall, and in the present embodiment, the heat insulating mattress 107 uses nonmetallic polyfluortetraethylene plate, every
The limitation of the factors such as the thickness of heat pad piece 106 is limited by plate material, weight, installation space limits, structural reliability, thickness use
Optimal value after calculating.
In the present embodiment, radiating guide 101 and feed waveguide 102 are connected using vacuum brazing method.
The material of the antenna house 20 use be added quartzy slurry high temperature sintering in quartz fibre 3 D weaving body and
At high temperature action can be born for a long time, to protect antenna to avoid directly bearing hot-fluid impact；The shape and load of the antenna house 20
Body is conformal；The wall thickness of the antenna house 20 is designed according to half-wave wall thickness principle, and the specific wall thickness of antenna house 20 can be according to saturating
Wave rate, gain etc. require to be finely adjusted half-wave wall theoretic throat, to improve the wave transmission rate of antenna house as far as possible, reduce it to day
The loss of line；Spacing distance between the antenna house 20 and antenna body 10 need to be computed optimization.
As shown in Figure 5 and Figure 6, the thermal capacity flash vessel 30 and feed waveguide 102 are in integral structure, are located at spoke
Ejected wave is led between 101 and connector 104, which includes:
Multiple metal arrays 302, it includes multiple metal columns 3021 arranged in the form of an array, the metal array 302 with
Feed waveguide 102 is in integral structure, and the metal array 302 is used to increase and the contact surface area of non-metallic device 301,
Accelerate the heat absorption rate of non-metallic device 301；
Ring flange 303 is located at around metal array, and the ring flange 303 and feed waveguide 102 are in integral structure, institute
The ring flange 303 stated is for being fixedly mounted non-metallic device 301, and in the present embodiment, ring flange 303 uses upper and lower two pieces of formula knots
Structure；
Multiple non-metallic devices 301, it includes multiple sizes and position all with the matched through-hole 3011 of metal column 3021, should
Non-metallic device 301 is fixedly mounted on ring flange 303, is set on metal array 302 and contacts metal array 302, described
Non-metallic device 301 material use polyimides, the thermal capacity of the material is big, can be used as absorbing from antenna structure part
Heat reduces its heating rate, reduces the high temperature impact to connector 104.
The metal array 302 forms periodic array, unit size and week by the lesser metal square column of size
Period, optimum structure was as shown in fig. 6, at this away from optimizing to obtain by ANSOFT software on the basis of considering machinable
In one embodiment of invention, the length L of the array that metal array 302 is one 2 × 3, metal column 3021 is 2mm, and width W is
1.5mm, the lateral slit width T and longitudinal direction slit width H of array are 1.8mm.
The present invention provides the low sidelobe antenna that can work under high Aerodynamic Heating environment of one kind, using with waveguide one at
The thermal capacity flash vessel of type absorbs the heat radiated from radome wall, to reduce the heating rate of antenna structure part, reduces
To the high temperature impact of the components such as connector, the present invention is laid out ingenious, structure novel, can satisfy antenna in small space
High temperature resistant demand, it is ensured that electric property is reliable and stable under high temperature environment for antenna, has very strong practicability and application prospect.
It is discussed in detail although the contents of the present invention have passed through above preferred embodiment, but it should be appreciated that above-mentioned
Description is not considered as limitation of the present invention.After those skilled in the art have read above content, for of the invention
A variety of modifications and substitutions all will be apparent.Therefore, protection scope of the present invention should be limited to the appended claims.
Claims (9)
1. a kind of high temperature resistant antenna is, characterized by comprising: antenna body (10), the day being mounted on the outside of antenna body (10)
Irdome (20) and the thermal capacity flash vessel (30) being arranged on antenna body (10)；
The antenna body (10) includes:
Radiating slot is arranged in the radiating guide (101) in radiating guide (101)；
Feed waveguide (102), one end are in 90 degree of orthogonal connections with one end of radiating guide (101)；
Waveguide (103) is connected with the other end of radiating guide (101)；
Connector (104) is arranged on feed waveguide (102), and probes into feed waveguide (102) cavity；
Absorbing load (105) is arranged in waveguide (103) end；
Short-circuit block (106) is arranged in feed waveguide (102) end；
Heat insulating mattress (107) is arranged between feed waveguide (102) and connector (104)；
The thermal capacity flash vessel (30) and feed waveguide (102) is in integral structure, is located at radiating guide (101) and connects
Connect between device (104), which includes: multiple metal arrays (302) are arranged in the form of an array it includes multiple
The metal column (3021) of column, the metal array (302) and feed waveguide (102) are in integral structure；
Ring flange (303) is located at around metal array, and the ring flange (303) and feed waveguide (102) are in integral structure；
Multiple non-metallic devices (301), are fixedly mounted on ring flange (303), are set on metal array (302) and contact
Metal array (302).
2. high temperature resistant antenna as described in claim 1, which is characterized in that the feed waveguide (102) and radiating guide
(101) internal chamber wall size is identical, and the waveguide (103) is identical as the internal chamber wall size of radiating guide (101).
3. high temperature resistant antenna as described in claim 1, which is characterized in that the broadside center line of the radiating guide (101)
(1011) side setting parallel resonance formula continuous radiation stitches (1012), and the length and radiating slot (1012) of radiating slot (1012) are inclined
It is all adjustable with a distance from waveguide core line.
4. high temperature resistant antenna as described in claim 1, which is characterized in that the heat insulating mattress (107) includes central through hole
(1071) and the pad (1072) of centrally disposed through hole wall outer, central through hole (1071) pass through metalized, pad
(1072) setting is the upper surface of heat insulating mattress (107) is at central through hole hole wall and lower surface is close to central through hole hole wall
Place.
5. high temperature resistant antenna as claimed in claim 4, which is characterized in that the heat insulating mattress (107) is using nonmetallic
Polyfluortetraethylene plate.
6. high temperature resistant antenna as described in claim 1, which is characterized in that connect radiating guide using vacuum brazing method
(101) and feed waveguide (102).
7. high temperature resistant antenna as described in claim 1, which is characterized in that the material of the antenna house (20) is used in quartz
Quartzy slurry high temperature sintering is added in fibre three-dimensional knitted body to form, the shape and carrier of antenna house (20) are conformal.
8. high temperature resistant antenna as described in claim 1, which is characterized in that the non-metallic device (301) includes multiple rulers
Very little and position all with metal column (3021) matched through-hole (3011), the through-hole (3011) contact metal column (3021).
9. high temperature resistant antenna as claimed in claim 8, which is characterized in that the material of the non-metallic device (301) uses
Polyimides.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610926648.0A CN106571521B (en) | 2016-10-31 | 2016-10-31 | A kind of high temperature resistant antenna |
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|---|---|---|---|
| CN201610926648.0A CN106571521B (en) | 2016-10-31 | 2016-10-31 | A kind of high temperature resistant antenna |
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| CN106571521A CN106571521A (en) | 2017-04-19 |
| CN106571521B true CN106571521B (en) | 2019-06-14 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108987889B (en) * | 2018-08-10 | 2023-11-21 | 昆山恩电开通信设备有限公司 | Integrated blind-mate antenna integrated with system equipment |
| CN109687104B (en) * | 2018-12-20 | 2024-03-01 | 中国科学院上海微系统与信息技术研究所 | Wide-horizontal angle and narrow-pitch angle single-slit antenna and manufacturing method thereof |
| CN113038801B (en) * | 2021-03-17 | 2023-05-30 | 中国科学院合肥物质科学研究院 | Steady-state high-power antenna displacement compensator |
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| CN102299425A (en) * | 2011-06-14 | 2011-12-28 | 西安空间无线电技术研究所 | High-power low-PIM (passive intermodulation) broadband polarized frequency duplexing feed assembly in Ku frequency band |
| CN202817172U (en) * | 2012-09-26 | 2013-03-20 | 北京航天长征飞行器研究所 | High temperature resistant Ka-band wide beam receiving and transmitting antenna |
| CN202977726U (en) * | 2012-12-18 | 2013-06-05 | 深圳市鼎耀科技有限公司 | Heat resisting antenna |
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2016
- 2016-10-31 CN CN201610926648.0A patent/CN106571521B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4839662A (en) * | 1985-01-18 | 1989-06-13 | Canadian Astronautics Limited | Composite waveguide coupling aperture having a varying thickness dimension |
| CN102299425A (en) * | 2011-06-14 | 2011-12-28 | 西安空间无线电技术研究所 | High-power low-PIM (passive intermodulation) broadband polarized frequency duplexing feed assembly in Ku frequency band |
| CN202817172U (en) * | 2012-09-26 | 2013-03-20 | 北京航天长征飞行器研究所 | High temperature resistant Ka-band wide beam receiving and transmitting antenna |
| CN202977726U (en) * | 2012-12-18 | 2013-06-05 | 深圳市鼎耀科技有限公司 | Heat resisting antenna |
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| Title |
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| Ka波段宽波束耐高温介质天线研究;金耀等;《2013年全国微波毫米波会议论文集》;20130521;全文 |
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