Direct current resistance and radio frequency impedance synchronous online monitoring device and method of BGA link

Abstract

The invention provides a direct current resistance and radio frequency impedance synchronous online monitoring device and method of a BGA link, the device comprises a to-be-monitored BGA sample, an impedance conversion clamp, a vector network analyzer and a direct current resistance tester, the to-be-monitored BGA sample is clamped on the impedance conversion clamp and is electrically connected with the impedance conversion clamp; the to-be-monitored BGA sample is connected with the vector network analyzer through the impedance conversion clamp, and the vector network analyzer is used for monitoring a TDR impedance signal of a radio frequency link of the to-be-monitored BGA sample; and the to-be-monitored BGA sample is connected with the direct current resistance tester through the impedance conversion clamp, and the direct current resistance tester is used for collecting a resistance signal of a DC link of the to-be-monitored BGA sample. According to the direct current resistance and radio frequency impedance synchronous on-line monitoring device and method, direct current resistance and radio frequency impedance synchronous on-line monitoring of a BGA link can be realized, the monitoring cost can be reduced, the test error can be reduced, and the test effect can be guaranteed.

Description

technical field [0001] The present application relates to the technical field of BGA links, in particular to a device and method for synchronously monitoring DC resistance and radio frequency impedance of BGA links online. Background technique [0002] Due to the short vertical leads, low self-inductance and mutual inductance between wires, and good frequency characteristics, BGA packages are gradually used in radio frequency applications, such as airborne, shipborne, spaceborne, and vehicle-mounted radars and communication systems, etc. aspect. Nowadays, the new high-density packaged RF devices represented by SiP in system-in-package usually have the coexistence of RF link and DC link in a BGA package. How to realize the RF link signal and DC link in the BGA package of RF devices The synchronous online capture of DC link signals is an important and difficult issue that needs to be paid attention to in the application fields of RF high-density packaging devices, such as int...

AI Technical Summary

Problems solved by technology

[0003] At present, most of the solutions for online monitoring of BGA link samples are mainly based on BGA daisy chain design and DC resistance online test equipment, but this method is only limited to the collection of DC signals, and for the TDR of BGA link samples The acquisition of signals such as impedance signals is mainly based on offline RF probe stations, so it is difficult to achieve the effect of synchronous online monitoring of DC resistance and RF impedance of BGA links, and, in terms of interconnection reliability and signal integrity, etc. During the research, it will also lead to a large amount of samples that need to be invested and high cost. At the same time, large test errors will be introduced due to multiple procedures such as sample transfer, wiring, and equipment debugging during multiple measurements, which will affect the test results.

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