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Low-passive intermodulation waveguide flange conversion device

A waveguide flange and passive intermodulation technology, applied in the microwave field, can solve the problems of high cost and poor versatility, and achieve the effects of reducing the electrical contact area, eliminating the nonlinearity of metal contact, and good versatility

Inactive Publication Date: 2019-08-16
XIAN INSTITUE OF SPACE RADIO TECH
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  • Description
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Problems solved by technology

However, the structure and method proposed in this patent need to change the original waveguide flange structure, which has poor versatility in practical applications, and correspondingly will generate relatively high costs

Method used

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  • Low-passive intermodulation waveguide flange conversion device
  • Low-passive intermodulation waveguide flange conversion device
  • Low-passive intermodulation waveguide flange conversion device

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Embodiment Construction

[0028] The specific embodiment of the present invention is described in further detail below in conjunction with accompanying drawing:

[0029] The basic idea of ​​the present invention is: to propose a low passive intermodulation waveguide flange conversion device, by constructing a double-sided periodic metal unit array, combined with a mechanical support structure, a double-sided air gap is formed between the ordinary waveguide flange surfaces non-contact transition connection. Through specific steps to determine the structural form, size and air gap size of the periodic metal unit, obtain the appropriate electromagnetic bandgap characteristics, realize the restraint of electromagnetic waves in the working frequency band, and ensure that electromagnetic waves cannot leak from the non-contact air gap, so as not to While affecting the normal transmission of electromagnetic waves along the waveguide, the internal non-contact of the waveguide transition connection is realized, ...

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Abstract

The invention discloses a low-passive intermodulation waveguide flange conversion device. By constructing a double-sided periodic metal unit array and in combination with a mechanical support structure, a noncontact transitional connection with a double-sided air gap is formed between common waveguide flange surfaces. The structural form, the size and the air gap size of the periodic metal unit are determined through specific steps, a suitable electromagnetic band gap characteristic is obtained, and it is ensured that electromagnetic waves cannot leak from the air gap. Thus, while the normal transmission of the electromagnetic waves is not affected, the internal noncontact effect of the waveguide transitional connection is achieved, the metal contact nonlinearity of the traditional waveguide flange connection is greatly eliminated, and low-passive intermodulation performance is achieved. The conversion device of the invention can realize low-passive intermodulation transitional conversion without changing the original waveguide flange structure, and has good universality. In addition, the device provided by the invention has a wideband working characteristic, can completely cover the corresponding waveguide working bandwidth, and can be applied to various high-power low-intermodulation microwave components and test systems.

Description

technical field [0001] The invention relates to a low passive intermodulation waveguide flange conversion device, which can be used in various high-power low passive intermodulation microwave components and test systems, and belongs to the field of microwave technology. Background technique [0002] Passive Intermodulation (PIM) effect is an important interference phenomenon in communication systems, which widely exists in various high-power microwave passive components and connection structures. In order to ensure the normal operation of the communication system, it is necessary to take effective passive intermodulation suppression measures. The main mechanism of passive intermodulation is contact nonlinearity and material nonlinearity. Material nonlinearity can be avoided by choosing appropriate materials, while contact nonlinearity generally exists in various microwave passive structures. The waveguide structure is one of the most widely used structural forms in various ...

Claims

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Application Information

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IPC IPC(8): H01P1/00H01P3/00
CPCH01P1/00H01P3/00
Inventor 陈翔孙冬全崔万照双龙龙王瑞贺永宁周强胡少光
Owner XIAN INSTITUE OF SPACE RADIO TECH
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