In radio frequency (RF) technology, signals from oscilloscopes, monitors, transient recorders, and many other devices are usually connected to sensors and generators via coaxial lines. In any transmission, however, interference voltages caused by differences in potential between the sender and receiver and by electromagnetic interference distort the results, particularly when the signals being transmitted are sensitive and wide-band. Designers of this type of transmission system need shielded, symmetrical transmission lines and input differential amplifiers with high common- mode rejection, which brin