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Cryogenic receiver with waveguide input and output

An input-output, receiver technology, applied in the directions of waveguides, waveguide-type devices, transmission systems, etc., can solve the problems of increasing the refrigeration pressure of the refrigerator, reducing the working temperature of the refrigerator, and the system cannot work normally, so as to reduce heat leakage, Reduced area, good thermal insulation effect

Inactive Publication Date: 2011-11-30
INST OF PHYSICS - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But it will also bring a problem: the waveguide is a good conductor of heat. If it is directly connected to the device in the vacuum chamber, the refrigeration pressure of the refrigerator will be greatly increased, and in severe cases, the refrigerator will drop to the required operating temperature. cause the system not to work properly

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  • Cryogenic receiver with waveguide input and output
  • Cryogenic receiver with waveguide input and output
  • Cryogenic receiver with waveguide input and output

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Embodiment Construction

[0048] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the present invention.

[0049] Such as figure 2 Shown is a schematic diagram of a cryogenic receiver input by a waveguide of the present invention. The cryogenic receiver 200 is a waveguide input cryogenic receiver, mainly including a vacuum chamber 201, a waveguide input end 202, a waveguide slot coupling structure 203, a pre-filter 204, a low-temperature low-noise amplifier 205, an amplifier power line 206, and an output cable 207 , Output microwave SMA connector 208, cold plate 209. The cryogenic receiver 200 may also be a waveguide output cryogenic receiver.

[0050] The entire system is mounted on a cold plate 209 in a vacuum chamber 201 as in conventional cryogenic receivers.

[0051] The microwave signal is input through the waveguide input port 202, coupled through the waveguide slot coupling structure 20...

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Abstract

The invention relates to a waveguide input and output cryogenic receiver, comprising: a pre-filter, a low-temperature low-noise amplifier connected to the pre-filter, the low-temperature low-noise amplifier is connected to a working power supply through a power line, and It is characterized in that it also includes: a waveguide input end, a waveguide slot coupling structure; the waveguide slot coupling structure is arranged between the waveguide input end and the pre-stage filter, and is used to realize the waveguide input end, the The waveguide flanges between the pre-filters are butted, and a gap is set between the two waveguide flanges. The invention adopts a structure with high thermal resistance and low loss, under the premise of ensuring better electrical performance, heat insulation between the low-temperature device and the input and output interface is maximized, the area of ​​the waveguide flange is reduced, and the waveguide gap coupling is added. structure, thereby reducing the heat leakage from the vacuum chamber to the vacuum chamber.

Description

technical field [0001] The invention relates to the field of low-temperature electronics, and in particular relates to a technology used in a waveguide input-output low-temperature receiver system for thermal insulation between low-temperature devices and input-output interfaces while maintaining good electrical performance. Background technique [0002] Low temperature receiver refers to the main components of the receiver, such as filters, amplifiers, etc., which work at low temperature (such as 77K). Compared with conventional receivers, cryogenic receivers can effectively reduce their noise figure and improve their sensitivity, thereby improving the performance of the receiver. For example, in the field of wireless communication, improving the sensitivity of the base station means that the coverage of the base station can be expanded, and the transmission power of the base station can be reduced while obtaining the same coverage. [0003] Because of the advantages of cr...

Claims

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Application Information

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IPC IPC(8): H04B1/16H01P1/04H01P3/12
Inventor 郭进王佳边勇波崔彬周曙煜何晓锋李超吴云李娜王旭李国强张雪强张强李春光黎红孟继宝何豫生
Owner INST OF PHYSICS - CHINESE ACAD OF SCI
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