End-to-end encrypted messaging app, Signal, is getting closer to launching a much anticipated feature that will allow users to share only a username in order to connect with other users, rather than ...

Russian President Vladimir Putin said Moscow would suspend its participation in the last remaining major nuclear-arms-control treaty between the U.S. and Russia. WSJ’s Ann M. Simmons explains the New ...

The data connection device under test in Figure 1 is characterized by comparing test signals sent into the link with signals measured at the link output. The differences between these two test signals ...

A tough challenge for test engineers is explored in terms of test methods, pitfalls, and measurement errors. For the test engineer, RF and microwave power amplifier testing imposes unique challenges.