Waveguide calorimeter and double-load calorimetric low-power standard device including same

Abstract

The invention discloses a waveguide calorimeter and a double-load calorimetric low-power standard device including the same. The waveguide calorimeter includes an outer cylinder which has a first accommodating chamber, an inner cylinder which is located in the first accommodating chamber and has a second accommodating chamber, a thermoelectric reactor which is located in the second accommodating chamber, a working link which penetrates the top of one side of the outer cylinder and the top of one side of the inner cylinder, a reference link which is arranged in symmetry with the working link and penetrates the top of the other side of the outer cylinder and the top of the other side of the inner cylinder, and an insulating support of which one end is combined with and fixed to the outer wall of the bottom end of the inner cylinder and the other end is combined with and fixed to the outer wall of the bottom end of the outer cylinder. The double-load calorimetric low-power standard deviceincludes a microwave signal source, a frequency multiplier, a directional coupler, a power sensor, a power indicator, a temperature control instrument, a DC source, a digital voltmeter, a computer and a waveguide calorimeter. The calorimetric low-power standard device has a frequency range of 50GHz to 75GHz, and meets the domestic demand for the transmission of small power parameters in the frequency band.

Description

technical field [0001] The invention relates to the technical field of radio measurement. More specifically, it relates to a waveguide calorimeter and a dual-load calorimetric low-power standard device including the waveguide calorimeter. Background technique [0002] Power is one of the most basic parameters in the field of microwave and millimeter waves, and it is also an important parameter to characterize the characteristics of microwave and millimeter wave signals. Therefore, the microwave radio standard laboratories of various countries have carried out the research and construction of power standards very early. With the continuous development of science and technology, the demand for the measurement of millimeter-wave low-power parameters in the 5mm frequency band (50GHz~75GHz) is also increasing. However, there is currently no millimeter-wave low-power standard for this frequency band in my country. Based on the above considerations, a 5mm double-load waveguide ca...

AI Technical Summary

Problems solved by technology

However, the microcalorimeter method requires an available bolometric power base, and the current domestic market cannot meet the requirements, so the microcalorimeter method cannot be realized in this frequency band.

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