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For wireless charging of electric vehicle (EV) batteries, high-frequency magnetic fields are generated from magnetically coupled coils. The large air-gap between two coils may cause high leakage of magnetic fields and it may also lower the power transfer efficiency (PTE). For the first time, in this paper, we propose a new set of coil design formulas for high-efficiency and low harmonic currents and...
Simultaneous switching noise (SSN) is caused by the simultaneous switching of a group of I/O drivers, and is proportional to the total inductance and the rate of change of the switching current. This often leads to signal distortion and degradation of signal and power integrity of systems. Furthermore, with the continuously decreasing operating voltage, susceptibility to SSN keeps on increasing and...
Simultaneous switching current (SSC) drawn by integrated circuits (ICs) creates simultaneous switching noise (SSN) on power nets, which causes a number of SI/PI problems, such as reduced noise margin and eye opening with increased SSN. Analyzing the effects of SSC and SSN is especially important for ICs targeted for mobile applications whose operating frequency keeps on increasing with decreasing...
With more clinical trials proving viability of visual prosthesis follows the demand for higher resolution devices. As the number of electrodes increases, due to surgical difficulties, it is preferred to keep their length short by placing the implant close to the stimulation site, where there are considerable constraints on device size. On the contrary, the physical volume of the implant generally...
Delay elements are used in integrated circuits (ICs) to meet design specific timing requirements. Delays are often generated by increasing the input transition times. For long delays, such a signal generally results in prolonged short-circuit current either within the delay element itself or at the subsequent stage, elevating the overall power consumption of the system. In this paper, a novel CMOS...
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