N-type coaxial thermistor type power transmission standard seat

A thermistor and power transfer technology, which is applied in the direction of measuring electrical variables, measuring devices, instruments, etc., can solve the problems that the measurement accuracy is difficult to meet the microwave power standard and the environmental temperature has a large influence, and achieve small relative thermal conductivity and stable temperature , the effect of reducing heat loss

Active Publication Date: 2013-05-01
BEIJING INST OF RADIO METROLOGY & MEASUREMENT
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AI Technical Summary

Problems solved by technology

[0004] The traditional thermistor base is a structure of double thermistor pairs, one pair of thermistors is used for microwave power measurement, and the other pair is used for temperature compensation. This structure can realize fast measurement, but it is greatly affected by the ambient temperature. Its measurement accuracy is difficult to meet the requirements of microwave power standards

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  • N-type coaxial thermistor type power transmission standard seat

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Embodiment Construction

[0026] like figure 1 Shown is a schematic cross-sectional view of the thermistor type power seat of the present invention. An N-type coaxial thermistor type power transmission standard seat, the standard seat includes a thermistor element structure cavity 1, a transmission line, a temperature control cavity 4, and an N-type joint 5, and the transmission line includes a transmission line with a coaxial structure The outer conductor 2 and the inner conductor 3 of the transmission line. A square column 6 with a thermistor attached is arranged in the structure cavity 1 of the thermistor element. The transmission line and the thermistor are connected through a bellows 7. The structural cavity of the thermistor element and part of the transmission line close to the side of the square column are embedded in the temperature control cavity, and the input end of the transmission line is connected with an N-type connector. .

[0027] The N-type coaxial thermistor type power transmissio...

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Abstract

The invention relates to an N-type coaxial thermistor type power transmission standard seat, which comprises a thermistor element structure cavity, a temperature control cavity, a transmission line and an N-type joint, wherein a square column onto which a thermistor is attached is arranged in the thermistor element structure cavity; the transmission line is matched and connected with the thermistor through a corrugated pipe; the thermistor element structure cavity and a part of the transmission line, which is close to one side of the square column, are embedded into the temperature control cavity; and an output end of the transmission line is connected with the N-type joint. The power transmission standard seat satisfies the requirement of wideband microwave power value traceability, and guarantees the accuracy and the reliability of microwave power value transmission.

Description

technical field [0001] The invention relates to a microwave power transmission standard seat, in particular to an N-type coaxial thermistor type power transmission standard seat. Background technique [0002] At present, most of the microwave power measurement standards established by various countries adopt the calorimetric method. The application of this theory is very mature and can obtain high measurement accuracy; Good performance and stable characteristics. Although the calorimetric low-power standard has high measurement accuracy, it has harsh requirements on the measurement environment, cumbersome measurement procedures, long measurement time, and inconvenient maintenance and use. In the application of microwave power measurement standards, bolometer has the advantages of fast response, convenient measurement and good long-term stability, and is one of the best materials for designing microwave power transfer standards; thermistor as a A radiant heater with negativ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R35/00
Inventor 杨绪军许传忠
Owner BEIJING INST OF RADIO METROLOGY & MEASUREMENT
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