Match Network Repair

 

A lot of companies can claim to repair RF matching networks because many of the problems, such as blown capacitors, insulators damaged by arcing, and seized motors are readily apparent to even a novice technician. And sometimes, they may even be able to repair them satisfactorily.

The problem comes when a matching network arrives with no blatant issues. The repair tag may simply read ‘High Reflected' or “Long Settle Time” etc. In these cases, the ability to completely test the match, understand its operation in detail, and map and test it dynamically using loads that mimic those seen in the customer's application that ensure the unit is working properly. Many more parameters must be examined than the simple ‘reflected power' measurement that is used as the sole quality index by most repair shops.

     

At Frontier, we know matching networks inside and out. After all, we design and build our own. We realize that the performance of a match unit depends on many different metrics. We also realize that the customer's process depends not just on achieving a low reflected power level, but also on the power output of the match, the trajectory that it follows, proper adjustment of gains and impedance centering. We understand matching losses, and can characterize each match in terms of its series resistance, an important parameter that even the original manufacturer does not always specify.

On several occasions we have modified and improved the performance of OEM equipment at a customers' request, the photographs below show a variable inductor added to production match units to reduce setup time by more than an hour per wafer change, the other shows a new printed circuit board developed to replace parts that were unobtainable to allow continued use of match units that had burned out phase / mag detectors.

We did it for them and we can do it for you….call us at 970 371 0356

 

 

 

Please call us if you have any questions; Tel 970 371 0356 or email rfsales@freng.com