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Compact high-average-power matching load

A technology for matching load and average power, applied in waveguide-type devices, electrical components, circuits, etc., can solve problems such as increased manufacturing costs, difficult processing of absorbers, and easy breakage

Inactive Publication Date: 2020-06-26
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This design has the following problems: 1) The length of the absorber is too long, resulting in an oversized matching load; 2) The tapered cone absorber is difficult to process (especially its tip is easy to break), resulting in increased manufacturing costs ; 3) The tip of the absorber will absorb microwaves and generate more heat under high power conditions, which is easily damaged

Method used

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  • Compact high-average-power matching load
  • Compact high-average-power matching load
  • Compact high-average-power matching load

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Such as figure 1 and 2 shown.

[0031] A compact large average power matching load, including a section of transmission line 1 whose axis is short-circuited at the right end along the Z direction, an absorber 2 located in the transmission line 1, and three tuning screws 3; the tuning screws 3 are connected from the The outside of the transmission line 1 protrudes into the inside of the transmission line 1 , and the depth of the tuning screw 3 inside the transmission line can be adjusted from the outside of the transmission line 1 .

[0032] The transmission line 1 is a rectangular waveguide, and its broad side is along the X direction.

[0033] The shape of the absorber 2 is a cone, and the minimum width and minimum height of the cone are both greater than 1 / 50 of the working wavelength of the compact high-power matching load.

[0034] The number of the absorber 2 is one, which is arranged at the bottom of the transmission line 1 and contacts the inner wall of the tr...

Embodiment 2

[0038] Such as image 3 and 4 shown.

[0039] Compared with Example 1, the only difference is that the shape of the absorber 2 is rectangular. Rectangular absorbers are easier to process than conical absorbers, which can significantly reduce processing costs.

Embodiment 3

[0041] Such as Figure 5 and 6 shown.

[0042] Compared with Example 1, the only difference is that the number of the absorbers 2 is two, which are respectively arranged on the two side walls of the transmission line 1, and are respectively connected to the inner wall of the transmission line 1 in the X direction and - X-direction contact. The number of the tuning screws 3 is 6, which are arranged on the transmission line 1 along the Z direction. Three of the tuning screws 3 are arranged at the top of the transmission line 1 , and the other three of the tuning screws 3 are arranged at the bottom of the transmission line 1 .

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Abstract

The invention discloses a compact high-average-power matching load, which comprises a section of transmission line, at least one bald-head conical or rectangular absorber and at least one tuning screw, wherein one end of the transmission line is short-circuited, and the axis of the transmission line is along the Z direction, and the at least one bald-head conical or rectangular absorber is positioned in the transmission line. Compared with the traditional high-power matching load, the length of the high-average-power matching load is obviously shortened, the processing difficulty is greatly reduced, the average power capacity is greatly increased, and the matching of the matching load in a wide bandwidth range is obviously improved. The compact high-average-power matching load is mainly applied to a microwave system with high average power, especially to the field of microwave energy industrial application.

Description

technical field [0001] The invention relates to the field of low-cost high-power waveguide matching loads, in particular to a compact high-average power matching load. Background technique [0002] Matched loads are common components in the RF microwave field. The matched load usually consists of a section of transmission line short-circuited at one end, such as rectangular waveguide, circular waveguide, coaxial line, etc., and one or more absorbers located in the transmission line. In order to obtain as wide a working bandwidth as possible and as low a reflection coefficient as possible, the absorber is often designed as a cone. The cross-sectional dimension of the cone gradually increases from zero along the axis of the transmission line. This design has the following problems: 1) The length of the absorber is too long, resulting in an oversized matching load; 2) The tapered cone absorber is difficult to process (especially its tip is easy to break), resulting in increas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01P1/06H01P1/26H01P1/30
CPCH01P1/06H01P1/264H01P1/266H01P1/268H01P1/30
Inventor 王清源苏荣荣
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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