CN201917393U - Microwave thermal noise standard source device - Google Patents
Microwave thermal noise standard source device Download PDFInfo
- Publication number
- CN201917393U CN201917393U CN2010206269254U CN201020626925U CN201917393U CN 201917393 U CN201917393 U CN 201917393U CN 2010206269254 U CN2010206269254 U CN 2010206269254U CN 201020626925 U CN201020626925 U CN 201020626925U CN 201917393 U CN201917393 U CN 201917393U
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- CN
- China
- Prior art keywords
- transmission line
- heat
- microwave
- conductive insulating
- insulating support
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- Expired - Fee Related
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Abstract
The utility model relates to a microwave thermal noise standard source device, comprising a microwave absorber (1), an output flange (4), a heat conducting insulation bracket (5), a side thermal insulation layer (6), a front thermal insulation layer (7), a back thermal insulation layer (8), electrically heated wires (9), transmission lines (2) and heat insulating transmission lines (3). The microwave absorber (1) and the transmission lines (2) are heated to a preset temperature by the electrically heated wires (9), the temperature of the microwave absorber (1) and the temperature distribution of the heat insulating transmission lines (3) are respectively measured by a platinum resistance temperature sensor, and the size of thermal noise power equivalently output from the end surface of the output flange is obtained. In the utility model, the transmission lines and the heat insulating transmission lines adopt an integrated design, errors caused by bad repeatability of the flange connection of the transmission lines and the heat insulating transmission lines are eliminated, the uncertainty of the output noise of the thermal noise standard source device is decreased, and therefore the technical index of the utility model is increased.
Description
Technical field
The utility model relates to a kind of thermonoise standard source device, particularly a kind of microwave thermo noise standard source apparatus.
Background technology
The microwave thermo noise standard source apparatus mainly was made up of microwave-absorbing body, transmission line, heat insulation transmission line in the past.Microwave-absorbing body produces standard thermonoise signal; Transmission line is used to hold microwave-absorbing body; Heat insulation transmission line has two effects, and the one, the standard thermonoise signal that microwave-absorbing body is produced is transferred to measurement mechanism, and the 2nd, the high temperature or the low temperature at microwave-absorbing body place is carried out the transition to room temperature.Common microwave thermo noise standard source apparatus is with transmission line and the separately design of heat insulation transmission line, connect by ring flange between the two, but, can cause the output noise uncertainty of microwave thermo noise standard source apparatus to increase because the ring flange connection is repeated bad.
The utility model content
The utility model purpose is to provide a kind of microwave thermo noise standard source apparatus, solves the repeated bad problem of introducing error that is connected with heat insulation transmission line flange dish owing to transmission line.
A kind of microwave thermo noise standard source apparatus comprises: microwave-absorbing body, output flange, heat conductive insulating support, side heat-insulation layer, preincubation layer, back heat-insulation layer, heating wire also comprise: transmission line, heat insulation transmission line.
The metallic object that the heat insulation transmission line of cylindrical transmission line and rectangle is formed in one, and transmission line is connected side by side with heat insulation transmission line, the cross-sectional diameter of transmission line is greater than heat insulation transmission line cross section diagonal length, all there is rectangular through-hole at the center of output flange, heat insulation transmission line and transmission line, heat insulation transmission line and transmission line rectangular through-hole measure-alike, the heat insulation transmission line cross-sectional profile of output flange rectangular through-hole and rectangle is measure-alike, output flange and the welding of heat insulation transmission line output port, the output flange outer face overlaps with heat insulation transmission line outer face.Microwave-absorbing body places transmission line rectangular through-hole center, and microwave-absorbing body and transmission line rectangular through-hole interference fit are fixed.Heat conductive insulating support, preincubation layer, back heat-insulation layer, side heat-insulation layer are mica.The heat conductive insulating support is cylindric, and the heat conductive insulating rack outer surface has screw thread, and transmission line places in the heat conductive insulating support, and heating wire is wrapped on the heat conductive insulating support.Preincubation layer, back heat-insulation layer are fixed with the transmission line screw thread respectively.The side heat-insulation layer is two semicircular cylinders, places the heat conductive insulating rack outer surface, and side heat-insulation layer and heat conductive insulating support lock ring are fixed.
Heating wire is heated to predetermined temperature with microwave-absorbing body, transmission line, measures the temperature of microwave-absorbing body and the Temperature Distribution of heat insulation transmission line with platinum resistance temperature sensor respectively, obtains the size of equivalent heat outputting noise power on the output flange end face.
The utility model adopts integrated design with transmission line and heat insulation transmission line, eliminated the repeated bad error of introducing that is connected with heat insulation transmission line flange owing to transmission line, reduce the uncertainty of thermonoise standard source device output noise, thereby improved its technical indicator.
Description of drawings
The structural representation of a kind of microwave thermo noise standard source apparatus of Fig. 1.
1. heat insulation transmission line 4. output flanges of microwave-absorbing body 2. transmission lines 3. 5. heat conductive insulating supports 6. side heat-insulation layers 7. preincubation layers 8. back heat-insulation layer 9. heating wire
Embodiment
A kind of microwave thermo noise standard source apparatus comprises: microwave-absorbing body 1, output flange 4, heat conductive insulating support 5, side heat-insulation layer 6, preincubation layer 7, back heat-insulation layer 8, heating wire 9 also comprise: transmission line 2, heat insulation transmission line 3.
The metallic object that the heat insulation transmission line 3 of cylindrical transmission line 2 and rectangle is formed in one, and transmission line 2 is connected side by side with heat insulation transmission line 3, the cross-sectional diameter of transmission line 2 is greater than heat insulation transmission line 3 cross section diagonal length, output flange 4, all there is rectangular through-hole at the center of heat insulation transmission line 3 and transmission line 2, heat insulation transmission line 3 and transmission line 2 rectangular through-hole measure-alike, heat insulation transmission line 3 cross-sectional profile of output flange 4 rectangular through-hole and rectangle are measure-alike, output flange 4 and heat insulation transmission line 3 output ports welding, output flange 4 outer faces overlap with heat insulation transmission line 3 outer faces.Microwave-absorbing body 1 places transmission line 2 rectangular through-hole centers, and microwave-absorbing body 1 is fixed with transmission line 2 rectangular through-hole interference fit.Heat conductive insulating support 5, preincubation layer 7, back heat-insulation layer 8, side heat-insulation layer 6 are mica.Heat conductive insulating support 5 is cylindric, and heat conductive insulating support 5 outside surfaces have screw thread, and transmission line 2 places in the heat conductive insulating support 5, and heating wire 9 is wrapped on the heat conductive insulating support 5.Preincubation layer 7, back heat-insulation layer 8 are fixed with transmission line 2 screw threads respectively.Side heat-insulation layer 6 is two semicircular cylinders, places heat conductive insulating support 5 outside surfaces, and side heat-insulation layer 6 is fixed with heat conductive insulating support 5 lock rings.
Heating wire 9 is heated to predetermined temperature with microwave-absorbing body 1, transmission line 2, measures the temperature of microwave-absorbing body 1 and the Temperature Distribution of heat insulation transmission line 3 with platinum resistance temperature sensor respectively, obtains the size of equivalent heat outputting noise power on output flange 4 end faces.
Claims (1)
1. microwave thermo noise standard source apparatus, comprise: microwave-absorbing body (1), output flange (4), heat conductive insulating support (5), side heat-insulation layer (6), preincubation layer (7), back heat-insulation layer (8), heating wire (9) is characterized in that also comprising: transmission line (2), heat insulation transmission line (3);
The metallic object that cylindrical transmission line (2) and the heat insulation transmission line of rectangle (3) are formed in one, and transmission line (2) is connected side by side with heat insulation transmission line (3), the cross-sectional diameter of transmission line (2) is greater than heat insulation transmission line (3) cross section diagonal length, output flange (4), all there is rectangular through-hole at the center of heat insulation transmission line (3) and transmission line (2), heat insulation transmission line (3) and transmission line (2) rectangular through-hole measure-alike, output flange (4) rectangular through-hole and the heat insulation transmission line of rectangle (3) cross-sectional profile are measure-alike, output flange (4) and the welding of heat insulation transmission line (3) output port, output flange (4) outer face overlaps with heat insulation transmission line (3) outer face; Microwave-absorbing body (1) places transmission line (2) rectangular through-hole center, and microwave-absorbing body (1) is fixed with transmission line (2) rectangular through-hole interference fit; Heat conductive insulating support (5), preincubation layer (7), back heat-insulation layer (8), side heat-insulation layer (6) are mica; Heat conductive insulating support (5) is cylindric, and heat conductive insulating support (5) outside surface has screw thread, and transmission line (2) places in the heat conductive insulating support (5), and heating wire (9) is wrapped on the heat conductive insulating support (5); Preincubation layer (7), back heat-insulation layer (8) are fixed with transmission line (2) screw thread respectively; Side heat-insulation layer (6) is two semicircular cylinders, places heat conductive insulating support (5) outside surface, and side heat-insulation layer (6) is fixed with heat conductive insulating support (5) lock ring;
Heating wire (9) is heated to predetermined temperature with microwave-absorbing body (1), transmission line (2), measure the temperature of microwave-absorbing body (1) and the Temperature Distribution of heat insulation transmission line (3) with platinum resistance temperature sensor respectively, obtain the size of equivalent heat outputting noise power on output flange (4) end face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206269254U CN201917393U (en) | 2010-11-26 | 2010-11-26 | Microwave thermal noise standard source device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206269254U CN201917393U (en) | 2010-11-26 | 2010-11-26 | Microwave thermal noise standard source device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201917393U true CN201917393U (en) | 2011-08-03 |
Family
ID=44417187
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206269254U Expired - Fee Related CN201917393U (en) | 2010-11-26 | 2010-11-26 | Microwave thermal noise standard source device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201917393U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104764525A (en) * | 2014-12-30 | 2015-07-08 | 北京无线电计量测试研究所 | Cold cathode gas discharge tube noise source |
| CN107727267A (en) * | 2017-09-28 | 2018-02-23 | 北京无线电计量测试研究所 | A kind of coaxial standard cryogenic noise source |
| CN110411555A (en) * | 2019-07-05 | 2019-11-05 | 北京无线电计量测试研究所 | A kind of high temperature noise source |
-
2010
- 2010-11-26 CN CN2010206269254U patent/CN201917393U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104764525A (en) * | 2014-12-30 | 2015-07-08 | 北京无线电计量测试研究所 | Cold cathode gas discharge tube noise source |
| CN107727267A (en) * | 2017-09-28 | 2018-02-23 | 北京无线电计量测试研究所 | A kind of coaxial standard cryogenic noise source |
| CN110411555A (en) * | 2019-07-05 | 2019-11-05 | 北京无线电计量测试研究所 | A kind of high temperature noise source |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110803 Termination date: 20141126 |
|
| EXPY | Termination of patent right or utility model |