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Microwave filter packed shielded box and producing method thereof

A technology of microwave filters and production methods, applied in the fields of magnetic/electric field shielding, electrical components, etc., can solve problems such as neglect

Inactive Publication Date: 2004-11-24
海泰超导通讯科技(天津)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the design of the packaging and shielding box only focuses on the processing of microwave signals, while ignoring the requirements of low temperature conditions and high vacuum

Method used

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  • Microwave filter packed shielded box and producing method thereof
  • Microwave filter packed shielded box and producing method thereof
  • Microwave filter packed shielded box and producing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Embodiment 1: a kind of microwave filter packaging shielding box (see Figure 1-7 ), which is characterized in that it is composed of three parts, the filter work sheet 33 welded on the box base support frame 29 in a suspended shape according to the bottom, the box cover 10, the box base 20, the said box cover 10 There are screw holes 11 for fixing and connecting; on the edge of said box base 20, there are also screw holes 21 communicating with the screw holes 11 of the box cover 10 and used for fixing the box cover 10, and the corners of the box base 20 There is a 270° arc arc exhaust hole 22 at the junction that includes the right angle of the base box, and there is also a vent hole 23 at the bottom of the box base. There is a support frame 29 for the filter work piece 33 in the middle of the box base 20. There are air vent grooves 27, base fixing brackets 26 and base fixing screw holes 30; a pair of opposite sides 20b of the box base 20 have symmetrical input and out...

Embodiment 2

[0034] Embodiment 2: The above-mentioned box base 20 is made of copper.

[0035] The welding layer 31 of the above-mentioned welding filter working piece 33 on the support frame 29 in the middle of the shielding box base 20 may be an indium-silver alloy layer.

Embodiment 3

[0036] Embodiment 3: The material of the box base 20 mentioned above is aluminum alloy.

[0037] The welding layer 31 of the above-mentioned welding filter working piece 33 on the support frame 29 in the middle of the shielding box base 20 may be an indium-tin alloy layer.

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PUM

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Abstract

The box consists of box cover, metal box base and filter operation sheet welded on support frame of box base in suspension mode based on bottom. It is formed as the follows: air vent is set on box base and support frame of filter operation sheet is placed at central part of box base, fixing screw hole and inlet as well as outlet of two symmetric SMA connectors are set at a pair of opposite edge on box base, gold plated layer is at bottom of filter operation sheet and the operation sheet is welded on support frame at box base centre of shielded box with gold plated layer according to welding layers.

Description

(1) Technical field: [0001] The invention relates to a filter packaging and shielding device and a production method thereof, in particular to a microwave filter packaging and shielding box and a production method thereof. (two) background technology: [0002] At present, most of the filter packaging and shielding boxes in use are designed to work at room temperature. The micro-strip filter with planar structure is generally made of printed circuit board or ceramic substrate, and the working temperature is between -40□ and 70□. The problems of thermal expansion and contraction, heat conduction and electrical conduction caused by the different expansion coefficients of different materials are mostly ignored. Therefore, the design of the packaging and shielding box only focuses on the processing of microwave signals, while ignoring the requirements of low temperature conditions and high vacuum. (3) Contents of the invention: [0003] The purpose of the present invention is ...

Claims

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Application Information

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IPC IPC(8): H05K9/00
Inventor GUOZHI CHEN
Owner 海泰超导通讯科技(天津)有限公司
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