Waveguide temperature-sensitive bolometer device

A bolometric and sensitive technology, applied in measuring devices, thermometers using electrical devices, and electrical/magnetic components that are directly sensitive to heat, etc. and adjustment, poor broadband matching characteristics, etc., to achieve good broadband matching characteristics, easy installation and adjustment, and reduce microwave power loss.

Active Publication Date: 2018-12-07
BEIJING INST OF RADIO METROLOGY & MEASUREMENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a waveguide heat-sensitive bolometer to solve the problems in the prior art that the Ka-band millimeter-wave power cannot be measured, the broadband matching characteristics are poor, the measurement accuracy is poor, and it is inconvenient to manufacture and install. and adjustment issues

Method used

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Examples

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Effect test

Embodiment 1

[0020] A waveguide heat-sensitive bolometer device, see figure 1 , the waveguide heat-sensitive bolometer includes a sheet-shaped non-metallic transmission line 1, a sheet-shaped impedance transformer 2, a sheet-shaped metal transmission line 3 and a sheet-shaped non-metallic short-circuit ring 4 connected in sequence from left to right The right side of the non-metallic short-circuit ring 4 is connected with a slider holder 9, and the right side of the slider holder 9 is provided with a slider crimping spring 8, and the slider 7 is pressed on the slider crimping spring 8, and the slider The block 7 is fixed on the slider holder 9 by the longitudinal slider fixing screw 5 and the horizontal slider fixing screw 6;

[0021] see figure 2 , the impedance converter 2 is set to a T-shaped bar structure; the longitudinal part of the impedance converter 2 of the T-shaped bar structure is set as a probe, and the transverse part of the impedance converter 2 of the T-shaped bar structu...

Embodiment 2

[0026] A waveguide heat-sensitive bolometer is similar to Embodiment 1, except that the non-metallic transmission line 1 is in the shape of a circular sheet. The impedance converter 2 is in the shape of a circular sheet. The metal transmission line 3 is in the shape of a circular sheet. The non-metallic short-circuit ring 4 is in the shape of a circular sheet. In this way, the installation of the impedance converter 2 , the sheet-shaped metal transmission line 3 , the non-metallic short-circuit ring 4 and the sheet-shaped non-metallic transmission line 1 can be facilitated.

[0027] Further, the center of the non-metallic short-circuit ring 4 is provided with a card slot, and the left side of the slider holder 9 is provided with a raised card block matching the card slot, and the card block is inserted into the card slot . This can facilitate the installation of the slider holder 9 and the non-metallic short-circuit ring 4 .

[0028] Further, the card slot is set as an ope...

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Abstract

The invention discloses a waveguide temperature-sensitive bolometer device. The right side of a non-metallic short-circuit ring is connected with a slider holder, the longitudinal part of an impedancetransformer of a T-shaped cross-bar structure is a probe, and the lateral portion of the impedance transformer of the T-shaped cross-bar structure is connected across the outer wall on both sides ofa rectangular waveguide; a beaded thermistor is connected between the lateral portion and the longitudinal portion of the impedance transformer; the thermistor is connected to the lower end of a terminal, the upper end of the terminal is connected to a pressure block, the terminal is externally sleeved by an insulating sleeve disposed between the pressure block and the thermistor, the insulating sleeve is externally sleeved with a thermistor crimping spring disposed between the pressing block and the thermistor, and a thermistor adjustment screw is arranged on the pressure block. The waveguidetemperature-sensitive bolometer device has good broadband matching characteristics, high absorption efficiency for millimeter waves, stable replacement efficiency, good stability, high measurement repeatability, fast response, and ability of ensuring the consistency of the power quantity during the transfer process.

Description

technical field [0001] The invention relates to the technical field of thermal radiation measurement mechanical equipment, in particular to a waveguide heat-sensitive bolometer. Background technique [0002] At present, power is one of the important basic parameters of radio metering, and the research and establishment of power metering standards is the main research work of major international metering institutions. Ordinary power measuring instruments, such as early thermocouple type, diode type, etc., can be used with amplifier type power meters to measure microwave and millimeter wave power, but this type of power meter needs a 50MHz 1mW power signal before use Perform self-calibration. Thermocouple power base, the low end of its working frequency can start from DC, so it is very suitable for many wide-band measurement occasions. But there is also a key problem as a power standard, neither absolute power measurement. In recent years, RS Company has added a precision r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01K7/24
CPCG01K7/24
Inventor 张萌刘挺杨绪军侯海娇杨琳张伟伟
Owner BEIJING INST OF RADIO METROLOGY & MEASUREMENT
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