Transmission line tests 1-kW device using only 100W


Posted on Feb 7, 2013

A 13.56-MHz, ISM (industrial, scientific, and medical)-band RF-measurement device had the test requirement of a 50-hour, 1-kW burn-in. The device under test needed to be simultaneously stressed at an RF potential and RF current equivalent to 1 kW, but the only spare RF source at hand was a 100W RF generator. Besides, saving energy seemed important. The circuit in Figure 1 develops 1 kW from the 100W RF source by storing energy in a transmission line.






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