CN204439679U - A kind of broadband feed integrally cooling low-temperature receiver test panel shielding apparatus - Google Patents
A kind of broadband feed integrally cooling low-temperature receiver test panel shielding apparatus Download PDFInfo
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- CN204439679U CN204439679U CN201520103090.7U CN201520103090U CN204439679U CN 204439679 U CN204439679 U CN 204439679U CN 201520103090 U CN201520103090 U CN 201520103090U CN 204439679 U CN204439679 U CN 204439679U
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Abstract
The utility model relates to a kind of broadband feed integrally cooling low-temperature receiver test panel shielding apparatus, and a kind of broadband feed integrally cooling low-temperature receiver test panel shielding apparatus, comprises external shield, inner shield and liquid nitrogen bubble chamber.External shield is located at the periphery of inner shield, and the inwall of the inwall of external shield and inner shield surrounds a confined space.Liquid nitrogen bubble chamber is positioned at confined space, and is placed on the top of inner shield.Inner shield comprises the left inside shield assembly and right inside shield assembly that plug together and be integrated; Gas input and output channel and low-temperature receiver mounting hole is provided with bottom inner shield.This device has that shield effectiveness is good, easy accessibility, the feature such as can to reuse, solve the processing welding difficulty of large scale radome in prior art, and save processing charges, and can replacement for small microwave dark room, make low-temperature receiver test environment more science.
Description
Technical field
The utility model relates to broadband feed integrally cooling low-temperature receiver system noise temperature technical field of measurement and test, is specifically related to a kind of microwave signal shield assembly for the test of broadband feed integrally cooling low-temperature receiver system noise temperature.
Background technology
Low-temperature receiver allows low temperature low noise amplifier be operated in 20K(-253 DEG C) under environment, owing to having extremely low noise temperature (only having 1/9 of regular receiver), more and more come into one's own in the reception of feeble signal.Adopt low-temperature receiver can improve the sensitivity of system significantly, the G/T value of elevator system is one of preferred option of the current and following receiving system.Noise temperature due to low-temperature receiver is low especially (≤50K), how could test accurately and effectively, particularly the low-temperature receiver (input port is broadband feed) of broadband feed integrally cooling.
Need feed integrally cooling in broadband feed integrally cooling low-temperature receiver.Feed is flared structure, and itself just has radiation absorption function, and wide band feed subtended angle is larger.In the process of test, have a lot of interfering frequencies enter low temperature receiving system.The first, the interference of business telecommunication frequency; The second, greatly, space, buildings radiation energy; Considerable influence is caused to the test of the noise of low-temperature receiver system, cannot test accurately.Because the noise temperature of low-temperature receiver system itself is low especially, air itself also can impact system, so for such low-temperature receiver system, invent test radome, first, get rid of the interference of extraneous business telecommunication frequency, low-temperature receiver is carried out not having in noisy environment; The second, eliminate the energy that the radiation such as the earth, space, buildings enter system, solve the accuracy of test.
Utility model content
The purpose of this utility model is to provide a kind of broadband feed integrally cooling low-temperature receiver test panel shielding apparatus, this device has that shield effectiveness is good, easy accessibility, the feature such as can to reuse, solve the processing welding difficulty of large scale radome in prior art, and save processing charges, can replacement for small microwave dark room, make low-temperature receiver test environment more science.
For achieving the above object, the utility model have employed following technical scheme:
A kind of broadband feed integrally cooling low-temperature receiver test panel shielding apparatus, comprises external shield, inner shield and liquid nitrogen bubble chamber.Described liquid nitrogen bubble chamber is built with liquid nitrogen.
Described external shield is located at the periphery of inner shield, and the inwall of the inwall of external shield and inner shield surrounds a confined space.Described liquid nitrogen bubble chamber is positioned at confined space, and is placed on the top of inner shield.
Described inner shield comprises the left inside shield assembly and right inside shield assembly that plug together and be integrated; Gas input and output channel and low-temperature receiver mounting hole is provided with bottom described inner shield.
Described external shield comprises external shroud and is arranged on the external shield lid above external shroud, and described external shroud is the hollow shell of upper and lower opening.
Described left inside shield assembly comprises left inside radome and left inside radome support plate.Described left inside radome, its upper and lower two ends are respectively equipped with the first upper shed and the first under shed, and its right-hand member is provided with right openings.
Described right inside shield assembly comprises right inside radome, right inside radome support plate and limited block.Described limited block and right inside radome support plate are arranged on the two ends up and down of right inside radome respectively.Described right inside radome, its upper and lower two ends are respectively equipped with the second upper shed and the second under shed, and its left end is provided with left side opening.
The left side opening of described right inside radome inserts from the right openings of left inside radome, makes left inside radome and right inside radome surround the hollow shell of upper and lower opening.First upper shed and the second upper shed surround a circular hole, and the second under shed and the second under shed surround low-temperature receiver mounting hole.
Described external shield and inner shield all adopt stainless steel material.
Described gas input and output channel comprises gas inlet pipe and gas output tube.One end of described gas input and output channel is positioned at the inside top of inner shield, and the other end is positioned at the outside of inner shield.
Compared to the prior art, the beneficial effects of the utility model are:
Shield assembly described in the utility model adopts the technology integrating microwave, refrigeration, electromagnetic environment, can get rid of extraneous business telecommunication frequency, greatly, space, the radiation such as buildings energy impact that low-temperature receiver test, have be convenient to install, processing simply, the advantage such as cost is lower.The utility model, by adopting inside and outside two-layer metallic shield, can shield any electromagnetic signal in external interference, thus obtain true and reliable test data.The utility model is integrated by left inside shield assembly and right inside shield assembly being plugged together, make to fit tightly therebetween, the better effects if of shielding undesired signal can not only be made, the feature such as also there is easy accessibility, can reuse, solve the processing welding difficulty of large scale radome in prior art, and save processing charges.The utility model can replacement for small microwave dark room, makes low-temperature receiver test environment more science.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation one of left inside shield assembly;
Fig. 3 is the structural representation two of left inside shield assembly;
Fig. 4 is the structural representation one of right inside shield assembly;
Fig. 5 is the structural representation two of right inside shield assembly.
Wherein:
1, external shield, 2, liquid nitrogen bubble chamber, 3, left inside shield assembly, 31, left inside radome, 32, left inside radome support plate, the 33, first upper shed, the 34, first under shed, 35, right openings, 4, right inside shield assembly, 41, right inside radome, 42, cushion block, the 43, second upper shed, the 44, second under shed, 45, left side opening, 46, right inside radome support plate, 5, gas input and output channel, 6, low-temperature receiver, 7, microwave low-loss window, 8, refrigeration machine.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described further:
A kind of broadband feed integrally cooling low-temperature receiver test panel shielding apparatus as shown in Figure 1, comprises external shield 1, inner shield and liquid nitrogen bubble chamber 2.Described external shield and inner shield all adopt stainless steel material.Described liquid nitrogen bubble chamber 2 is built with liquid nitrogen.Described external shield 1 is located at the periphery of inner shield, and the inwall of the inwall of external shield and inner shield surrounds a confined space.Described liquid nitrogen bubble chamber 2 is positioned at confined space, and is placed on the top of inner shield.Described external shield 1 comprises external shroud and is arranged on the external shield lid above external shroud, and described external shroud is the hollow shell of upper and lower opening.Described inner shield comprises the left inside shield assembly 3 and right inside shield assembly 4 that plug together and be integrated; Gas input and output channel 5 and low-temperature receiver mounting hole is provided with bottom described inner shield.Described gas input and output channel 5 comprises gas inlet pipe and gas output tube.One end of described gas input and output channel 5 is positioned at the inside top of inner shield, and the other end is positioned at the outside of inner shield.
As shown in Figures 2 and 3, described left inside shield assembly 3 comprises left inside radome 31 and left inside radome support plate 32.Described left inside radome 31, its upper and lower two ends are respectively equipped with the first upper shed 33 and the first under shed 34, and its right-hand member is provided with right openings 35.
As shown in Figure 4 and Figure 5, described right inside shield assembly 4 comprises right inside radome 41, right inside radome support plate 46 and limited block 42.Described limited block 42 and right inside radome support plate 46 are arranged on the upper/lower terminal of right inside radome 4 respectively.Described right inside radome 41, its upper and lower two ends are respectively equipped with the second upper shed 43 and the second under shed 44, and its left end is provided with left side opening 45.
Specific works principle of the present utility model is:
Described external shield 1, adopting thickness to be that the stainless steel material of 2mm is made, is the outermost radome of this test panel shielding apparatus, finishes all to the influential microwave signal of test for shielding completely.
Described liquid nitrogen bubble chamber 2, adopts polyester form foaming to form, for splendid attire liquid nitrogen.
Described left inside shield assembly 3 and right inside shield assembly 4, adopt that thickness is the stainless steel material bending of 2mm, welding forms respectively.The left side opening 45 of right inside radome 41, insert from the right openings 35 of left inside radome 31, until the top of right openings 35 props up the cushion block 42 near left side opening 45, first upper shed 33 and the second upper shed 43 surround a circular hole, and the second under shed 34 and the second under shed 44 surround low-temperature receiver mounting hole.Now, the bottom surface of left inside radome support plate 32 and right inside radome support plate 46 is in the same plane, and the end face of left inside radome 31 and cushion block 42 is in the same plane.Left inside shield assembly 3 and right inside shield assembly 4 are by plugging together the inner shield of the overall upper and lower opening of formation one.By adopting the mode plugged together to be connected as a whole by left inside shield assembly with right inside shield assembly, the processing welding difficulty of large scale radome in prior art can not only be solved, also there is features such as being convenient to dismounting, can reuse.
Described gas input and output pipe, for being filled with dry nitrogen to microwave low-loss window 7 upper end, in minimizing inner shield, moisture is to the adverse effect of microwave test.
The concrete use procedure of this utility model in low-temperature receiver test is:
(1) first left inside shield assembly 3 and right inside shield assembly 4 are drawn close to centre from the left and right sides of low-temperature receiver 6 respectively, and then plug together as a whole inner shield.Again by the low-temperature receiver mounting hole of inner shield by bottom, together with being connected together with the installation lower flange upper end of low-temperature receiver 6.Now, the cold finger of low-temperature receiver 6 and refrigeration machine 8, is all positioned at inner shield.
(2) the liquid nitrogen bubble chamber 2 filling liquid nitrogen is placed on the top of inner shield.
(3) first external shroud is located at from top to bottom the outside of liquid nitrogen bubble chamber and inner shield, and the bottom of external shroud is placed on left inside radome support plate and right inside radome support plate respectively.Again external shield lid is covered the top in external shroud.
(4) magnetic shielding adhesive tape is adopted to be pasted by the micro gap between bottom external shield and inner shield.
(5) one end outside inner shield is positioned at by gas inlet pipe, to the inner nitrogen injection of inner shield, for the moisture in dry inner shield.
The utility model, by adopting inside and outside two-layer metallic shield, can shield any electromagnetic signal in external interference, thus obtain true and reliable test data.
Above-described embodiment is only be described preferred implementation of the present utility model; not scope of the present utility model is limited; under the prerequisite not departing from the utility model design spirit; the various distortion that those of ordinary skill in the art make the technical solution of the utility model and improvement, all should fall in protection domain that the utility model claims determine.
Claims (5)
1. a broadband feed integrally cooling low-temperature receiver test panel shielding apparatus, is characterized in that: comprise external shield, inner shield and liquid nitrogen bubble chamber;
Described external shield is located at the periphery of inner shield, and the inwall of the inwall of external shield and inner shield surrounds a confined space; Described liquid nitrogen bubble chamber is positioned at confined space, and is placed on the top of inner shield;
Described inner shield comprises the left inside shield assembly and right inside shield assembly that plug together and be integrated; Gas input and output channel and low-temperature receiver mounting hole is provided with bottom described inner shield.
2. a kind of broadband feed integrally cooling low-temperature receiver test panel shielding apparatus according to claim 1, it is characterized in that: described external shield comprises external shroud and is arranged on the external shield lid above external shroud, and described external shroud is the hollow shell of upper and lower opening.
3. a kind of broadband feed integrally cooling low-temperature receiver test panel shielding apparatus according to claim 1, is characterized in that: described left inside shield assembly comprises left inside radome and left inside radome support plate; Described left inside radome, its upper and lower two ends are respectively equipped with the first upper shed and the first under shed, and its right-hand member is provided with right openings;
Described right inside shield assembly comprises right inside radome, right inside radome support plate and limited block; Described limited block and right inside radome support plate are arranged on the two ends up and down of right inside radome respectively; Described right inside radome, its upper and lower two ends are respectively equipped with the second upper shed and the second under shed, and its left end is provided with left side opening;
The left side opening of described right inside radome inserts from the right openings of left inside radome, makes left inside radome and right inside radome surround the hollow shell of upper and lower opening; First upper shed and the second upper shed surround a circular hole, and the second under shed and the second under shed surround low-temperature receiver mounting hole.
4. a kind of broadband feed integrally cooling low-temperature receiver test panel shielding apparatus according to claim 1, is characterized in that: described external shield and inner shield all adopt stainless steel material.
5. a kind of broadband feed integrally cooling low-temperature receiver test panel shielding apparatus according to claim 1, is characterized in that: described gas input and output channel comprises gas inlet pipe and gas output tube; One end of described gas input and output channel is positioned at the inside top of inner shield, and the other end is positioned at the outside of inner shield.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520103090.7U CN204439679U (en) | 2015-02-12 | 2015-02-12 | A kind of broadband feed integrally cooling low-temperature receiver test panel shielding apparatus |
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| CN201520103090.7U CN204439679U (en) | 2015-02-12 | 2015-02-12 | A kind of broadband feed integrally cooling low-temperature receiver test panel shielding apparatus |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105405472A (en) * | 2015-12-28 | 2016-03-16 | 哈尔滨工业大学 | Articulated type opening mechanism of heat radiation shielding case of refrigeration target |
| CN105405473A (en) * | 2015-12-28 | 2016-03-16 | 哈尔滨工业大学 | Heat radiation shielding case of refrigeration target |
| CN110907733A (en) * | 2019-12-04 | 2020-03-24 | 上海航天测控通信研究所 | Method for testing energy leakage of quasi-optical feed network system |
| CN114286558A (en) * | 2021-12-21 | 2022-04-05 | 苏州恒瑞迪生医疗科技有限公司 | Installation box and medical equipment |
| CN116893315A (en) * | 2023-09-07 | 2023-10-17 | 苏州英特模科技股份有限公司 | Wall penetrating system of load dynamometer of semi-anechoic chamber and mounting method of wall penetrating system |
-
2015
- 2015-02-12 CN CN201520103090.7U patent/CN204439679U/en active Active
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105405472A (en) * | 2015-12-28 | 2016-03-16 | 哈尔滨工业大学 | Articulated type opening mechanism of heat radiation shielding case of refrigeration target |
| CN105405473A (en) * | 2015-12-28 | 2016-03-16 | 哈尔滨工业大学 | Heat radiation shielding case of refrigeration target |
| CN105405473B (en) * | 2015-12-28 | 2018-01-30 | 哈尔滨工业大学 | A kind of cryogenic target heat radiation screening cover |
| CN110907733A (en) * | 2019-12-04 | 2020-03-24 | 上海航天测控通信研究所 | Method for testing energy leakage of quasi-optical feed network system |
| CN110907733B (en) * | 2019-12-04 | 2021-08-10 | 上海航天测控通信研究所 | Method for testing energy leakage of quasi-optical feed network system |
| CN114286558A (en) * | 2021-12-21 | 2022-04-05 | 苏州恒瑞迪生医疗科技有限公司 | Installation box and medical equipment |
| CN114286558B (en) * | 2021-12-21 | 2024-03-12 | 苏州恒瑞迪生医疗科技有限公司 | Mounting box and medical equipment |
| CN116893315A (en) * | 2023-09-07 | 2023-10-17 | 苏州英特模科技股份有限公司 | Wall penetrating system of load dynamometer of semi-anechoic chamber and mounting method of wall penetrating system |
| CN116893315B (en) * | 2023-09-07 | 2023-12-12 | 苏州英特模科技股份有限公司 | Wall penetrating system of load dynamometer of semi-anechoic chamber and mounting method of wall penetrating system |
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| GR01 | Patent grant |