A load for millimeter-wave calorimetric microwave power meter

Abstract

The invention discloses a load for a millimeter-wave calorimetric microwave power meter, which comprises: a microwave dry load, a liquid circulation and heat conduction channel, a liquid channel inlet, a liquid channel outlet, a waveguide mode converter, an adiabatic device, and a sealed casing; The shell is fixed in the inner cavity of the heat insulation device, the microwave dry load is installed in the cavity of the sealed shell, the input end of the waveguide mode converter extends to the outside of the heat insulation device, and the output end of the waveguide mode converter is connected to the microwave inlet of the microwave dry load , the waveguide mode converter is used to convert the microwave inlet of the microwave dry load into a standard waveguide interface; there is a liquid circulation and heat conduction channel between the microwave dry load and the inner wall of the sealed shell, and a liquid channel is provided between the heat insulation device and the sealed shell The inlet and the outlet of the liquid channel; the load can overcome the problems in the prior art that the direct measurement and high-power water load method cannot measure the millimeter-wave power of several watts to hundreds of watts, and the coupling measurement method has insufficient precision.

Description

technical field

[0001] The invention relates to the field of microwave power measurement in the millimeter wave frequency band, in particular to a load for a millimeter wave calorimetric microwave power meter. Background technique

[0002] Among the key parameters of radio measurement stipulated by the International Bureau of Weights and Measures, power is the most basic quantity. Millimeter wave power measurement plays an important role in both civil communication and military defense. Generally, low-power millimeter waves (milliwatt level) can be directly and accurately measured by existing commercial equipment. When measuring low and medium power millimeter waves (several watts to hundreds of watts), an equal proportion of low-power microwave can be obtained through a directional coupler, and then the low-power microwave can be directly measured, and then the microwave power can be obtained according to the coupling coefficient of the device used, but these devices The c...

Examples

Embodiment Construction

[0029] In order to understand the above-mentioned purpose, features and advantages of the present invention more clearly, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, under the condition of not conflicting with each other, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0030] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways different from the scope of this description. Therefore, the protection scope of the present invention is not limited by the following disclosure. The limitations of specific examples.

[0031] The system structure of the present invention is as figure 1 As shown, the load includes:

[0032] Microwave dry load 5, liquid circulation and heat...

technical field

[0001] The invention relates to the field of microwave power measurement in the millimeter wave frequency band, in particular to a load for a millimeter wave calorimetric microwave power meter. Background technique

[0002] Among the key parameters of radio measurement stipulated by the International Bureau of Weights and Measures, power is the most basic quantity. Millimeter wave power measurement plays an important role in both civil communication and military defense. Generally, low-power millimeter waves (milliwatt level) can be directly and accurately measured by existing commercial equipment. When measuring low and medium power millimeter waves (several watts to hundreds of watts), an equal proportion of low-power microwave can be obtained through a directional coupler, and then the low-power microwave can be directly measured, and then the microwave power can be obtained according to the coupling coefficient of the device used, but these devices The c...

Examples

Embodiment Construction

[0029] In order to understand the above-mentioned purpose, features and advantages of the present invention more clearly, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, under the condition of not conflicting with each other, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0030] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways different from the scope of this description. Therefore, the protection scope of the present invention is not limited by the following disclosure. The limitations of specific examples.

[0031] The system structure of the present invention is as figure 1 As shown, the load includes:

[0032] Microwave dry load 5, liquid circulation and heat...

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