April 2007 [Feedback] Article Corrections I was pleased to see that my article (written along with Nils Nazoa), "Evaluate Accuracy Of Portable VNAs," was published in the January 2007 issue of Microwaves & RF (p. 58) as planned. However, there are three points that I would like to bring to your attention regarding the article as published: The sidebar section, describing calculating return loss uncertainty and uncertainty in phase, is missing from the article. This is most... January 2007 [Test & Measurement] Evaluate Accuracy Of Portable VNAs Portable vector network analyzers (VNAs) have brought new mobility to one of the most trusted instruments in the RF/microwave industry. The new model LA19-13-02 portable analyzer from LA Techniques (www.latechniques.com), for example, features a compact footprint but full S-parameter measurement capability from 3 MHz to 3 GHz. Of course, a major consideration before acquiring a portable VNA is its accuracy and reliability. ... |
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