CN206452391U - A kind of device of test material radio-frequency responsive performance - Google Patents
A kind of device of test material radio-frequency responsive performance Download PDFInfo
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- CN206452391U CN206452391U CN201621465867.5U CN201621465867U CN206452391U CN 206452391 U CN206452391 U CN 206452391U CN 201621465867 U CN201621465867 U CN 201621465867U CN 206452391 U CN206452391 U CN 206452391U
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Abstract
The utility model provides a kind of device of test material radio-frequency responsive performance, including twin pyramid loudspeaker and general pyramid loudspeaker, and twin pyramid loudspeaker and general pyramid loudspeaker connect and compose airtight cavity；Test sample is placed in the junction of twin pyramid loudspeaker and general pyramid loudspeaker；The a port of twin pyramid loudspeaker connects microwave source, and another port is located in reflection wave paths and reversed ejected wave test device；The port of general pyramid loudspeaker is located in transmission wave paths and connects transmitted wave test device.Compared to test material radio-frequency responsive performance in waveguide channels; microwave source output microwave is exposed on material sample by a port of the twin pyramid loudspeaker of vacuum-sealed cavity; back wave reflexes to another port of twin pyramid loudspeaker; transmitted wave is transmitted to general pyramid loudspeaker; the microwave reflection of this method influences very small to microwave source, with protecting the characteristics of microwave source is not influenceed by microwave reflection.
Description
Technical field
The utility model belongs to HPM transmission and lift-off technology field, and in particular to a kind of test material radio-frequency responsive performance
Device.
Background technology
In order to reduce the volume weight of antenna, antenna reflective face material is developed to often making now from original metal material
Carbon fiber reflecting surface material and Web materials etc., the application of these materials can not only reduce the weight of antenna but also can be with
Reduce the volume of antenna.
Relative to metal mirror material, the reflecting properties of carbon fiber and metal mesh facer material have all declined, while
All there is certain microwave transmission characteristic, therefore, the radio-frequency responsive performance for accurately testing these reflecting surface materials is final determines
The major criterion of antenna performance.
The method of usual test material has two kinds, as shown in Figure 1, first method in waveguide test material penetrate
The back wave of material sample is directly reflected back microwave source in frequency response performance, this method, if the power of microwave source is very big,
Microwave source is possible to cause very big influence, or even damages microwave source, makes system cisco unity malfunction.Second method is
Material sample selects 1m × 1m test specimen, comparison method is used during measurement, the incidence angle of radiating element is 45 °, the reality with antenna
Using close, reference is used as using measurement result of the aluminium sheet of formed objects in same location.Not only workload is big for this method, knot
Structure is complicated, and can only obtain the reflecting properties of material, it is impossible to while obtaining the test result of the parameters such as the transmission performance of material.
Utility model content
In order to overcome the deficiencies in the prior art, the utility model provides a kind of device of test material radio-frequency responsive performance,
It can obtain the test result of the parameters such as material reflection and transmission performance simultaneously.
Technical solution of the present utility model is to provide a kind of device of test material radio-frequency responsive performance, its it is special it
Be in：Including twin pyramid loudspeaker and general pyramid loudspeaker, above-mentioned twin pyramid loudspeaker and general pyramid loudspeaker are connected and composed
Airtight cavity；
Test sample is placed in the junction of twin pyramid loudspeaker and general pyramid loudspeaker；
The a port of above-mentioned twin pyramid loudspeaker connects microwave source；Another port is located in reflection wave paths and reversed ejected wave
Test device；The port of general pyramid loudspeaker is located in transmission wave paths and connects transmitted wave test device.
The reflectance factor of above-mentioned twin pyramid loudspeaker microwave source injection port is less than 5%；The transmission coefficient of back wave port
Higher than 90%.
Observation window is provided with order to whether have with optical diagnostics sample surfaces in punch-through, above-mentioned seal cavity
Mouthful；It is preferred that, above-mentioned window is located on general pyramid loudspeaker.
Interface is vacuumized in order to meet to be provided with the microwave test of relatively high power, above-mentioned seal cavity, can be true by taking out
Null device obtains the vacuum environment needed in vacuum cavity.
It is preferred that, above-mentioned twin pyramid loudspeaker and general pyramid loudspeaker are connected by flange.
The utility model also provides a kind of method of test material radio-frequency responsive performance, and the microwave that microwave source is exported passes through true
The a port of the twin pyramid loudspeaker of empty annular seal space is exposed on detected materials sample, and back wave reflexes to twin pyramid loudspeaker
Another port, transmitted wave transmitted to general pyramid loudspeaker；The reflection system of the twin pyramid loudspeaker microwave source injection port
Number is less than 5%；The transmission coefficient of back wave port is higher than 90%.
The utility model has the advantages that：
(1) compared to test material radio-frequency responsive performance in waveguide channels, microwave source output microwave passes through vacuum-sealed cavity
The a port of twin pyramid loudspeaker is exposed on material sample, and back wave reflexes to another port of twin pyramid loudspeaker,
Transmitted wave is transmitted to general pyramid loudspeaker, and the microwave reflection of this method influences very small to microwave source, with protecting microwave source not
The characteristics of being influenceed by microwave reflection；
(2) compared to the second method with usual testing of materials, this method can obtain the reflection and transmission of material simultaneously
Characteristic, simple in construction, install convenient；
(3) material sample is placed in vacuum-sealed cavity by this method, test material can be penetrated in the vacuum simulated environment
Frequency response performance.
(4) by the diagnosis of the video of watch window and to reflection and the test of transmitted wave, can with diagnostic materials surface whether
Puncture.
Brief description of the drawings
Fig. 1 is that existing material reflectance waveguide bounce technique tests block diagram；
Fig. 2 is existing measured material reflectivity radiation reflective method test schematic diagram；
Fig. 3 is the utility model apparatus structure schematic diagram.
Reference is in figure：1- units under test, 2- guide directional couplers, 3- waveguide coaxial connecters, 4- matching of waveguide
Load, 5- radiating elements, the first port of the twin pyramid loudspeakers of 6-, the second port of the twin pyramid loudspeakers of 7-, the general pyramids of 8-
The port of loudspeaker, the twin pyramid loudspeakers of 9-, 10- closed chambers, the general pyramid loudspeakers of 11-, 12- observation windows, 13- vacuumizes interface.
Embodiment
The utility model is further described below in conjunction with accompanying drawing.
As shown in figure 3, a kind of device of test material radio-frequency responsive performance of the utility model, including twin pyramid loudspeaker 9
With general pyramid loudspeaker 11 composition vacuum sealing cavity 10, test sample 1 is placed in twin pyramid loudspeaker 9 and general pyramid loudspeaker 11
Between, microwave source, the reversed ejected wave test device of second port 7, general pyramid loudspeaker are connect by the first port of twin pyramid loudspeaker 9
11 port 8 connects to be provided with transmitted wave test device, vacuum-sealed cavity 10 and watch window 12 and vacuumizes interface 13；Observation window
Whether mouth 12 can have punch-through with video diagnosis sample 1 surface, and annular seal space 10 is vacuumized by vacuumizing interface 13.
The utility model principle：
The bore of the twin pyramid loudspeaker of the utility model experimental provision is 106.26 × 86.8mm, by the curved connections two of π
Port, port is BJ100 standard waveguide sizes, and the bore of general pyramid loudspeaker is consistent with twin pyramid loudspeaker bore, port
For BJ100 standard waveguide sizes.Material sample is placed between the two, material sample is met required plane by clamping
Degree.When carrying out relatively high power microwave test, the vacuum environment needed in vacuum cavity can be obtained by vaccum-pumping equipment.It is micro-
Ripple is injected by a port of twin pyramid loudspeaker, is irradiated on material sample, is reflected away by another port, typically
Pyramid loudspeaker port receives transmission microwave.
Claims (6)
1. a kind of device of test material radio-frequency responsive performance, it is characterised in that：Including twin pyramid loudspeaker and general pyramid loudspeaker
, the twin pyramid loudspeaker and general pyramid loudspeaker connect and compose airtight cavity；
Test sample is placed in the junction of twin pyramid loudspeaker and general pyramid loudspeaker；
The a port of the twin pyramid loudspeaker connects microwave source, and another port is located in reflection wave paths and reversed ejected wave is tested
Device；The port of general pyramid loudspeaker is located in transmission wave paths and connects transmitted wave test device.
2. the device of test material radio-frequency responsive performance according to claim 1, it is characterised in that：The twin pyramid loudspeaker
The reflectance factor of microwave source injection port is less than 5%；The transmission coefficient of back wave port is higher than 90%.
3. the device of test material radio-frequency responsive performance according to claim 1, it is characterised in that：On the airtight cavity
It is provided with watch window.
4. the device of test material radio-frequency responsive performance according to claim 3, it is characterised in that：The observation window is located at
On general pyramid loudspeaker.
5. according to the device of any described test material radio-frequency responsive performance of claims 1 to 3, it is characterised in that：It is described close
Opened on closed chamber body and vacuumize interface.
6. according to the device of any described test material radio-frequency responsive performance of claims 1 to 3, it is characterised in that：It is described twin
Raw pyramid loudspeaker and general pyramid loudspeaker are connected by flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621465867.5U CN206452391U (en) | 2016-12-29 | 2016-12-29 | A kind of device of test material radio-frequency responsive performance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621465867.5U CN206452391U (en) | 2016-12-29 | 2016-12-29 | A kind of device of test material radio-frequency responsive performance |
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| Publication Number | Publication Date |
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| CN206452391U true CN206452391U (en) | 2017-08-29 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106850085A (en) * | 2016-12-29 | 2017-06-13 | 西北核技术研究所 | A kind of device of test material radio-frequency responsive performance |
-
2016
- 2016-12-29 CN CN201621465867.5U patent/CN206452391U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106850085A (en) * | 2016-12-29 | 2017-06-13 | 西北核技术研究所 | A kind of device of test material radio-frequency responsive performance |
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