Figure 1 The frequency doubler circuit with a 50 percent duty cycle.. The system uses feedback via op amp U5A to force the one-shot to produce an output square wave with a nominal average value of 2.5 ...

This circuit extends the operating frequency range for the frequency doubler to 36 MHz, which is more than 10 times the upper frequency limit of the original circuit. Jim McLucas retired from ...

Dickson voltage multiplier for radio frequency (RF) energy harvesting, shown in Fig.1-a, is simple and has an improved performance compared to other existing topologies (for energy harvesting). The ...

Graphene transistors are attractive for many applications but making integrated circuits without degrading their characteristics is proving challenging. Here, the authors demonstrate a radio ...

Massachusetts Institute of Technology (MIT) has developed a frequency multiplier made from a single grapheme transistor made from material one atom thick. The device can take an incoming signal and ...