CN206727193U - A kind of dual-band and dual-polarization low pass high resistance type frequency-selective surfaces - Google Patents
A kind of dual-band and dual-polarization low pass high resistance type frequency-selective surfaces Download PDFInfo
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- CN206727193U CN206727193U CN201720425413.3U CN201720425413U CN206727193U CN 206727193 U CN206727193 U CN 206727193U CN 201720425413 U CN201720425413 U CN 201720425413U CN 206727193 U CN206727193 U CN 206727193U
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- dual
- band
- low pass
- high resistance
- selective surfaces
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Abstract
The utility model discloses a kind of dual-band and dual-polarization low pass high resistance type frequency-selective surfaces, including：Dielectric-slab, is covered in the metal unit of dielectric-slab, and metal unit includes：Y type grooves, the paster of Y type grooves is surrounded, extend the parting minor matters of Y type grooves end.The utility model provides a kind of dual-band and dual-polarization low pass high resistance type frequency-selective surfaces, the utility model focuses on produces a high-performance passband with angle and the Dual Stabilization that polarizes near 9.4GHz, and the high-performance stopband with angle and the double stability that polarizes near 35GHz be present.
Description
Technical field
The utility model belongs to Electromagnetic Field and Microwave Technology field, and in particular to a kind of dual-band and dual-polarization Cassegrain antenna
Reflecting surface.
Background technology
The spatial filter that frequency-selective surfaces (FSS) are made up of the metal patch or gap of periodic arrangement, due to
Cost is low, efficiency high, it is easy to accomplish, and with special to different frequency, polarization, the reflection of electromagnetic wave of angle or the selection of transmission
Property, in reflector antenna, wave absorbing device, polarizer, the artificial electromagnetic material that microwave regime is widely used in antenna house, frequency dividing is multiplexed
In.
The circulation of energy and water is to influence the most important factor that global weather waits change in air, and its medium cloud is to contact this
The tie of two kinds of cyclic processes.And the diameter very little of water dust, the wavelength of millimetre-wave radar are short, Doppler's positive effect, there is pole
Strong speed and spatial resolution；And X-band and Ka wave bands are in atmospheric window, decay is small, and detection range is remote, is selected with frequency
The subreflector of millimetre-wave radar is served as on surface, launches or receive the electromagnetic wave of X-band and Ka wave bands with common antenna.
Market needs a kind of frequency-selective surfaces to focus on that generation one is dual to angle and polarization steady near 9.4GHz
Fixed passband, and the stopband with angle and the double stability that polarizes near 35GHz be present.
Utility model content
To solve the deficiencies in the prior art, the purpose of this utility model is to provide a kind of dual-band and dual-polarization low pass high resistance type
Frequency-selective surfaces, the utility model focuses on produces a high property with angle and the Dual Stabilization that polarizes near 9.4GHz
Energy passband, and the high-performance stopband with angle and the double stability that polarizes near 35GHz be present.
In order to realize above-mentioned target, the utility model adopts the following technical scheme that：
A kind of dual-band and dual-polarization low pass high resistance type frequency-selective surfaces, including：Dielectric-slab, it is covered in the metal list of dielectric-slab
Member, metal unit include：Y type grooves, the paster of Y type grooves is surrounded, extend the parting minor matters of Y type grooves end.
A kind of foregoing dual-band and dual-polarization low pass high resistance type frequency-selective surfaces, metal unit are multiple.
A kind of foregoing dual-band and dual-polarization low pass high resistance type frequency-selective surfaces, metal unit are arranged in six sides between each other
Shape is cellular；There are six metal units around one metal unit.
A kind of foregoing dual-band and dual-polarization low pass high resistance type frequency-selective surfaces, Y type grooves composition have：Three unit grooves,
Each unit groove is mutually 120 °.
A kind of foregoing dual-band and dual-polarization low pass high resistance type frequency-selective surfaces, the length range of unit groove is 3.5mm
To 4mm, thickness 0.035mm.
A kind of foregoing dual-band and dual-polarization low pass high resistance type frequency-selective surfaces, the thickness of dielectric-slab are more than or equal to 2mm.
A kind of foregoing dual-band and dual-polarization low pass high resistance type frequency-selective surfaces, the length range of parting minor matters is 0.8mm-
1mm, thickness 0.035mm.
A kind of foregoing dual-band and dual-polarization low pass high resistance type frequency-selective surfaces, the gap between above-mentioned metal patch are specific
Scope is 0.3mm-0.4mm.
A kind of foregoing dual-band and dual-polarization low pass high resistance type frequency-selective surfaces, metal unit are copper unit.
It is of the present utility model to be beneficial in that：The utility model provides a kind of dual-band and dual-polarization low pass high resistance type frequency choosing
Surface is selected, the frequency-selective surfaces have Transmission X wave band, reflect the characteristic of Ka wave band electromagnetic waves, while have low insertion loss,
With good angle stability and polarizer stability；Wave transparent performance in passband is good, and loss of signal is small, and doing very well for stopband is several
Total reflection, the secondary use of frequency dividing of X-band and Ka wave bands can be realized on Cassegrain antenna；The utility model focuses on
9.4GHz nearby produce one have angle and polarize Dual Stabilization high-performance passband, and near 35GHz exist have
The high-performance stopband of angle and polarization double stability.The utility model utilizes frequency-selective surfaces hexagonal array mode, single
Member is more compact, improves graing lobe and the unusual caused frequency of surface wave, frequency-selective surfaces is had wider array of working frequency range；This reality
Remain to keep good polarizer stability and angle stabilization simultaneously with new passband and stopband in 20 ° of incidence wave off-normal
Property；Individual layer frequency-selective surfaces are simple in construction, and cost is relatively low, error can be caused different from sandwich construction processing, in Practical Project
In it is significant；And engineering plastics are used herein as dielectric material, ensure that the mechanical strength of subreflector.
Brief description of the drawings
Fig. 1 is a kind of front view of embodiment of the present utility model；
Fig. 2 is a kind of front view of embodiment of the present utility model；
The transmission and reflectance factor emulation of frequency selection surface cell structure when Fig. 3 is 1-40GHz electromagnetic wave vertical incidences
Figure；
The transmission coefficient comparison diagram of frequency selection surface cell structure when Fig. 4 is x wave band not same polarization different angle incidences；
The transmission of frequency selection surface cell structure and reflectance factor when Fig. 5 is Ka wave band not same polarization different angle incidences
Comparison diagram
The implication of reference in figure：
1Y type grooves, 2 parting minor matters, 3 pasters, 4 dielectric-slabs.
Embodiment
Make specific introduce to the utility model below in conjunction with the drawings and specific embodiments.
A kind of dual-band and dual-polarization low pass high resistance type frequency-selective surfaces, including：Dielectric-slab 4, it is covered in the metal of dielectric-slab 4
Unit, metal unit include：Y type grooves 1, the paster 3 of Y type grooves 1 is surrounded, extend the parting minor matters 2 of the end of Y type grooves 1.As one
Kind is preferred, and metal unit is copper unit.
Metal unit is multiple metal units；Metal unit is arranged in hexagonal honeycomb shape between each other；One metal list
There are six metal units around first.
The composition of Y type grooves 1 has：Three unit grooves, each unit groove are mutually 120 °.The length range of unit groove is
3.5mm to 4mm, thickness 0.035mm.The length range of parting minor matters 2 is 0.8mm-1mm, thickness 0.035mm.Single order Y types
It is the wavelength of low frequency pass band corresponding to the length of side of groove 1,2 corresponding high frequency stopband of second order parting minor matters.
For dielectric-slab 4 using engineering plastics abs, dielectric constant is about 2.8, and the thickness of dielectric-slab 4 is more than or equal to 2mm,
To ensure mechanical strength.
The specific scope in gap between metal patch 3 is 0.3mm-0.4mm, and such design is prevented by highpowerpulse thunder
Puncture up to ripple.
The transmission of frequency selection surface cell structure and reflectance factor are imitated when such as Fig. 3 being 1-40GHz electromagnetic wave vertical incidences
True figure；It can be seen that the frequency-selective surfaces have Transmission X wave band, the characteristic of Ka wave band electromagnetic waves is reflected, in 9.4G
Transmission coefficient is -0.218dB, and 35G is -37.33dB, functional, available for the reflector antenna of frequency dividing multiplexing, specific data
It is shown in Table 1
Not like-polarized transmission coefficient during table 1 (a) X-band vertical incidence
| Polarization | Resonance point/GHz | Transmission coefficient/dB | - 1dB bandwidth/GHz |
| TE | 9.4 | -0.218 | 2.4 |
| TM | 9.4 | -0.218 | 2.4 |
Not like-polarized transmission coefficient during table 1 (b) Ka wave band vertical incidence
| Polarization | Resonance point/GHz | Transmission coefficient/dB | - 30dB bandwidth/GHz |
| TE | 35 | -37.33 | 1 |
| TM | 35 | -37.11 | 0.9 |
The transmission coefficient of frequency selection surface cell structure, institute in figure when Fig. 4 is x wave band not same polarization different angle incidences
Showing that the change of angle has little to no effect to the transmission coefficient under horizontal and vertical polarization, transmission coefficient can reach -0.218dB,
Transmission performance is outstanding, and specific data are shown in Table 2.
The transmission coefficient Comparative result of different incidence angles under the X-band not same polarization of table 2
The transmission of frequency selection surface cell structure and reflection system when Fig. 5 is Ka wave band not same polarization different angle incidences
Number, the change of angle shown in figure is to the transmission under horizontal and vertical polarization and reflective index impacts very little, only in not homopolarity
Change and ability and sagacity has an impact when deviateing more than 20 degree of angles of vertical incidence, and transmission coefficient below holding -25dB near 35G, electricity
Magnetic wave almost all reflects, and has good inhibition, illustrates the angle stability that this structure has had, polarizer stability, specifically
Data are shown in Table 3.
The transmission coefficient Comparative result of different incidence angles under the Ka wave band not same polarizations of table 3
The utility model, using hexagonal manner most compact between unit, it is big to reduce unit on the basis of y stitches unit
It is small, and minor matters are added, guarantee 9.4G passbands introduce unwise to angle polarization near 35G while influence by angle polarization
The transmission stopband of sense.Using the utility model, it may be achieved play the subreflector of frequency dividing multiplexing in MMW Weather Radar,
In antenna house available for electronic equipments such as radio communication, radar, electronic navigation and electronic countermeasures.
The utility model provides a kind of dual-band and dual-polarization low pass high resistance type frequency-selective surfaces, and the frequency-selective surfaces have
Transmission X wave band, reflects the characteristic of Ka wave band electromagnetic waves, while has low insertion loss, the angle stability having had and polarization
Stability；Wave transparent performance in passband is good, and loss of signal is small, doing very well for stopband, is almost totally reflected, can be in Cassegrain day
The secondary use of frequency dividing of X-band and Ka wave bands is realized on line；The utility model focuses on that producing one near 9.4GHz has angle
With polarization Dual Stabilization high-performance passband, and near 35GHz exist with angle and polarize double stability high property
Can stopband.The utility model utilizes frequency-selective surfaces hexagonal array mode, and unit is more compact, improves graing lobe and surface wave
Frequency caused by unusual, makes frequency-selective surfaces have wider array of working frequency range；The utility model is in 20 ° of incidence wave off-normal
Passband and stopband remain to keep good polarizer stability and angle stability simultaneously；Individual layer frequency-selective surfaces are simple in construction,
Cost is relatively low, and error can be caused different from sandwich construction processing, significant in Practical Project；And engineering is used herein
Plastics ensure that the mechanical strength of subreflector as dielectric material.
General principle, principal character and advantage of the present utility model has been shown and described above.The technical staff of the industry
It should be appreciated that above-described embodiment does not limit the utility model in any form, it is all by the way of equivalent substitution or equivalent transformation
The technical scheme obtained, all falls within the scope of protection of the utility model.
Claims (9)
- A kind of 1. dual-band and dual-polarization low pass high resistance type frequency-selective surfaces, it is characterised in that including：Dielectric-slab, it is covered in above-mentioned The metal unit of dielectric-slab, above-mentioned metal unit include：Y type grooves, the paster of above-mentioned Y type grooves is surrounded, extend Y type grooves end Parting minor matters.
- 2. a kind of dual-band and dual-polarization low pass high resistance type frequency-selective surfaces according to claim 1, it is characterised in that above-mentioned Metal unit is multiple.
- 3. a kind of dual-band and dual-polarization low pass high resistance type frequency-selective surfaces according to claim 2, it is characterised in that above-mentioned Metal unit is arranged in hexagonal honeycomb shape between each other；There are six metal units around one metal unit.
- 4. a kind of dual-band and dual-polarization low pass high resistance type frequency-selective surfaces according to claim 1, it is characterised in that above-mentioned Y type grooves composition has：Three unit grooves, each unit groove are mutually 120 °.
- 5. a kind of dual-band and dual-polarization low pass high resistance type frequency-selective surfaces according to claim 4, it is characterised in that above-mentioned The length range of unit groove is 3.5mm to 4mm, thickness 0.035mm.
- 6. a kind of dual-band and dual-polarization low pass high resistance type frequency-selective surfaces according to claim 1, it is characterised in that above-mentioned The thickness of dielectric-slab is more than or equal to 2mm.
- 7. a kind of dual-band and dual-polarization low pass high resistance type frequency-selective surfaces according to claim 1, it is characterised in that above-mentioned The length range of parting minor matters is 0.8mm-1mm, thickness 0.035mm.
- 8. a kind of dual-band and dual-polarization low pass high resistance type frequency-selective surfaces according to claim 1, it is characterised in that above-mentioned The specific scope in gap between metal patch is 0.3mm-0.4mm.
- 9. a kind of dual-band and dual-polarization low pass high resistance type frequency-selective surfaces according to claim 1, it is characterised in that above-mentioned Metal unit is copper unit.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720425413.3U CN206727193U (en) | 2017-04-21 | 2017-04-21 | A kind of dual-band and dual-polarization low pass high resistance type frequency-selective surfaces |
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| CN201720425413.3U CN206727193U (en) | 2017-04-21 | 2017-04-21 | A kind of dual-band and dual-polarization low pass high resistance type frequency-selective surfaces |
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| CN206727193U true CN206727193U (en) | 2017-12-08 |
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| CN201720425413.3U Expired - Fee Related CN206727193U (en) | 2017-04-21 | 2017-04-21 | A kind of dual-band and dual-polarization low pass high resistance type frequency-selective surfaces |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110729567A (en) * | 2019-10-24 | 2020-01-24 | 北京环境特性研究所 | Wave absorbing device with controllable X-waveband pass band |
| CN115047547A (en) * | 2022-05-26 | 2022-09-13 | 成都信息工程大学 | Construction method of double-frequency terahertz space wave control device |
-
2017
- 2017-04-21 CN CN201720425413.3U patent/CN206727193U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110729567A (en) * | 2019-10-24 | 2020-01-24 | 北京环境特性研究所 | Wave absorbing device with controllable X-waveband pass band |
| CN115047547A (en) * | 2022-05-26 | 2022-09-13 | 成都信息工程大学 | Construction method of double-frequency terahertz space wave control device |
| CN115047547B (en) * | 2022-05-26 | 2023-07-11 | 成都信息工程大学 | Construction method of dual-frequency terahertz space wave control device |
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| GR01 | Patent grant | ||
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Granted publication date: 20171208 Termination date: 20190421 |