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Debugging method for pre-welding strip line splitter by laser

A debugging method, laser welding technology, applied to waveguide devices, electrical components, circuits, etc.

Active Publication Date: 2013-12-11
中国航空工业第六〇七研究所
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Public literature on pre-soldering debugging of stripline power splitters was not retrieved

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Embodiment 1: A stripline power divider of a certain type is a single-layer stripline one-to-twenty-four power divider, with a total of 23 isolation resistors and no conductive columns. Port contact faults occurred in the 7th, 9th, 20th, and 21st branches during debugging. After readjusting the clamp at the faulty port, pressing the cover plate at the faulty port, and then rechecking, all faults were eliminated. After laser welding, the The test proves that the performance of the power splitter is good.

Embodiment 2

[0044] Embodiment 2: A stripline power divider of a certain type is a two-layer stripline one-point-seven power divider, with 6 isolation resistors and two conductive columns in total. When the cover was opened, it was found that the mating surface of the cavity and the cover was uneven. There was a boss with a length of 20mm, a width of 1.5mm, and a height of 2mm that had not been milled off, and an indentation appeared on the surface of the cover. Finally, the cover plate can tightly cover the cavity. During further debugging, it was found that the phases of the 1st, 2nd, 3rd, and 4th branches were inconsistent with the phases of the 5th, 6th, and 7th branches, and a phase difference of 40° appeared at the center frequency point, indicating that the circuit had a fault in the isolation resistance welding position. Disconnect the power divider from the vector network analyzer, remove the fixture, open the cover, re-weld to eliminate the gap in the dielectric layer, and then r...

Embodiment 3

[0045] Embodiment 3: A certain type of stripline power divider is a two-layer stripline one-point nine power divider, with a total of 8 isolation resistors and three conductive columns. During debugging, it is judged that there are ports in the 2nd and 6th branches. Contact fault, port short-circuit fault occurs at the port of branch 5, and contact fault occurs at the conductive column common to the 6th, 7th, 8th, and 9th branches. After disconnecting the power divider and the vector network analyzer, remove the Fixture, open the cover plate, remove the excess metal wire of the strip line at the faulty port, reassemble and readjust the fixture at the conductive column shared by the 2nd and 6th branch ports and the 6th, 7th, 8th, and 9th branch, and A re-examination was carried out to eliminate all faults, and the test after laser welding proved that the performance of the power divider was good.

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PUM

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Abstract

The invention belongs to the microwave antenna technology, and relates to a debugging method for pre-welding a strip line splitter by laser. The debugging method is characterized by comprising the following steps: preparing a device; examining the flatness of the upper surface of a cavity; recording positions where failure is easily generated; assembling before welding; connecting a test device; and debugging the failure. The invention provides the debugging method for pre-welding the strip line splitter by the laser, so that the performances of the strip line splitter are ensured after welding.

Description

technical field [0001] The invention belongs to microwave antenna technology, and relates to a debugging method before laser welding of a strip line power divider. Background technique [0002] The stripline power divider is an important part of the current active phased array radar antenna system. There are many models and large quantities, and the tasks in the production and debugging stage are quite heavy. The stripline power divider is composed of a cavity, a cover plate, a stripline and a connector installed in the cavity. There are two ways to connect the cavity and cover of the power divider: laser welding and screw connection. Compared with screw connection, laser welding can reduce the size and weight while ensuring the same electrical performance, and it is airtight and enhances the environment. adaptability. However, if the power splitter is not debugged well before laser welding, it will be very difficult to debug and repair after welding. In the process of dec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01P11/00
Inventor 方峪枫沈荣孔德武
Owner 中国航空工业第六〇七研究所