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A design of switched-inductor solar energy harvesting circuits for wireless microsensors is proposed. To track the maximum power point (MPP) for the photovoltaic (PV) array, a Boost harvester is designed. A Buck converter working in the discontinuous conduction mode (DCM) is utilized to provide the stable output voltage and improve efficiency.
A new modular multilevel DC-DC converter with high power density and simplified localized voltage balancing control is proposed. In the proposed configuration, converter building blocks with the same power handling capability are connected in parallel in each row. Converter building block consists of an H-bridge and mutually coupled inductors whose total current is nearly ripple free. These features...
In this paper, fabrication and performance of RF MEMS planar spiral inductors is presented. The fabrication process is simple, using surface micromachined technology with three masks. Two types of spiral inductor were fabricated and the measured results showed that the spiral inductors had high performance at high frequency. The maximum quality of the spiral inductor-Type A is 15.8 at 1.4 GHz with...
This paper reports on a technological process that combines copper as conductor, permalloy as magnetic core material, and polyimide as insulation material to complete a microinductor on glass with high inductance. The shape of the magnetic core scheme was rectangular, of which the width of the long side and short side were 1.4 and 0.6 mm, respectively. The dimensions of the inductor are 3.86 mm times...
This paper reports a technological process that combines copper as conductor, NiFe film as magnetic core and polyimide as insulation material to complete a solenoid-type inductor. The results show that the inductance is 5.4 muH at 1 MHz and it keeps high inductance of 2 muH at 10 MHz. The quality factor is 1.54 at 1 MHz and up to 1.9 at 7 MHz
Soft FeSiBCuNbCr magnetic thin film was deposited by magnetron sputtering as magnetic core for inductor. In the fabrication process, UV-LIGA, dry etching technique, fine polishing and electroplating technique are adopted. The size of the solenoid-type inductor is 3.9 mm times 2.66 mm. Experimental results show that the inductance keeps constant about 0.9 muH in the frequency range from 1 MHz to 10...
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