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Self powered energy management circuits make energy harvesting converters more efficient and more reliable. This paper presents an improvement of a self-powered parallel synchronized switch harvesting on inductor (P-SSHI) circuit for piezoelectric transducers. Two different switching techniques are evaluated, which are switching based on two MOSFETs controlled by two operational amplifiers and switching...
In this paper we proposed a new approach to actuate and readout of resonating piezoelectric sensors to realize concept of self-sensing. In the circuit three transistors are used to differentiate between actuation and readout modes. We evaluated a given piezoelectric resonating sensor and the proposed circuit analytically and with simulations. We also evaluated the applicability of our circuit for...
The potential application of Defected Ground Structure (DGS) for isolation improvement of series discrete PIN diode switch is proposed in this paper. A square dumbbell DGS was selected for this application where it was connected in parallel with a single series discrete PIN diode. By realizing the circuit using FR4 substrate, the simulated and measured result clearly show that the isolation of the...
In this paper, we describe the simulation results of electromagnetic (EM) noise generated by fast switching circuits with gallium nitride (GaN)-based power devices. The frequency ranges of the EM noise extend to several hundred MHz because the GaN devices possess low parasitic capacitance. Therefore, we analyze both the conducted noise of the switching circuits and the radiated noise from the circuit...
This paper presents a numerical approach that combines the 2D Generalized Transmission Line Equations (GTLE) method and finite difference frequency-domain (FDFD) method to model and analyze the two-dimensional electromagnetic problem concerned in the power integrity (PI), which is becoming increasingly worse with the increase in clock frequency and density of the switching circuits, and with the decrease...
In this paper, the characteristics of the basic current mirror and the continuous-time current-mode current mirror integrator are analyzed. Using the two unlossy loop integrators and the basic current mirrors, the biquad circuit block is implemented. The signal flow graph (SFG) and the improved leap-frog (ILF) structure are simple to implement the six-order band pass filters. Exploring PSPICE9.1 simulation...
In this paper, the design of a compact planar bandpass filter above a defected ground plane is presented. The filter is designed as a combination of microstrip resonators and exploits the properties of a planar electromagnetic bandgap (EBG) structure patterned unto the ground plane of the printed circuit board material to provide a very wide stopband of up to 5 times the fundamental frequency. The...
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