Novel calorimetric power meter for terahertz frequency range

A terahertz and power meter technology, applied in the field of power meters, can solve the problems of insufficient frequency bands for power parameter calibration and testing capabilities, and achieve the effects of solving the problem of traceability of magnitude values, high measurement accuracy, and high thermal symmetry

Inactive Publication Date: 2016-03-30
BEIJING INST OF RADIO METROLOGY & MEASUREMENT
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Problems solved by technology

[0012] The purpose of the present invention is to provide a new type of calorimetric power meter for the terahertz frequency band, which solves the problem of insuffici

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  • Novel calorimetric power meter for terahertz frequency range
  • Novel calorimetric power meter for terahertz frequency range
  • Novel calorimetric power meter for terahertz frequency range

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[0029] In order to explain the present invention more clearly, the present invention will be further described below in conjunction with preferred embodiments and drawings. Similar components in the drawings are denoted by the same reference numerals. Those skilled in the art should understand that the content described below is illustrative rather than restrictive, and should not limit the protection scope of the present invention.

[0030] Because the terahertz frequency band is relatively high, the physical size of the waveguide transmission line used is small, and it is difficult to realize the process. Therefore, the new calorimetric power meter for the terahertz frequency band provided in this embodiment adopts the WR10 in the lower frequency band. Connect the waveguide converter (WR10-WR5, WR10-WR3) before the power sensor (WR10 transmission line, 75GHz~110GHz) as the terahertz power sensor 1 to realize the power measurement in the terahertz band (200GHz~325GHz), and use t...

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Abstract

The invention discloses a novel calorimetric power meter for a terahertz frequency range, and the power meter comprises a terahertz power sensor which generates a first thermoelectric potential according to the temperature change caused by DC power, and generates a second thermoelectric potential according to the temperature change caused by terahertz power; and a power indicator which calculates the value of the terahertz power according to the first and second thermoelectric potentials, and displays the value of the terahertz power. According to the technical scheme of the invention, the power meter is high in thermal symmetry, is large in dynamic range, is good in impedance matching, and is high in measurement accuracy.

Description

technical field [0001] This invention relates to power meters. More specifically, it relates to a new type of calorimetric power meter for the terahertz frequency band. Background technique [0002] In the RF microwave frequency band, power measurement is based on converting high-frequency or microwave energy into energy forms such as heat, force, DC or low-frequency electricity and then measuring them. Therefore, a power measuring instrument is always composed of induction, absorption and energy conversion. Generally, the power measuring instrument is called a power meter, the energy conversion part is called a power seat, a power probe or a power sensor, and the corresponding indicator is called a power indicator. [0003] Microwave and millimeter wave power meters can be divided into the following types according to the principle: [0004] (1) Calorimeter: A calorimeter is an instrument that measures the temperature change after the load absorbs power. The value of the ...

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Application Information

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IPC IPC(8): G01R21/02
CPCG01R21/02
Inventor 张伟伟程春悦
Owner BEIJING INST OF RADIO METROLOGY & MEASUREMENT
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