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In this paper, a maximum power point tracking (MPPT) architecture for micro-scale photovoltaic (PV) energy harvesting systems is presented. A switching DC-DC boost converter is used to provide the required voltage for the circuits of the ultra-low-power application. The MPPT tracks different illumination intensities through changing the input impedance of the boost converter. The proposed technique...
This paper presents a 12-Gb/s power-efficient voltage-mode driver for multi-standard serial-link applications. The proposed driver combines the advantages of voltage-mode drivers and those of variable-output-swing ones into a single architecture for multi-standard operation. This is achieved by having a reconfigurable pull-up network and a fixed shared pull-down network. In addition, this technique...
Two designs of microstrip dipole ultra-high-frequency (UHF) RFID tag antenna which can be used for metal object tagging are presented. The antennas, which have a very simple structure without any shorting pin and shorting plate, are composed of meander and ladder feed lines, rectangular loop, capacitive tip-loading and T-match structure. In addition, a full ground plane has been inserted in both tag...
A novel 1-to- broadband “-wave” power divider/combiner with reflection cancellation is presented and demonstrated. The new -wave structure provides reflection cancellation and output port isolation with 1-to- (arbitrary ) signal splitting or -to-1 summing. It has low loss due to its use of low-impedance transmission lines and provides a relative bandwidth of 50%–200%. The concept is...
A novel power divider/combiner concept is presented and demonstrated at Ka-band. The new offset-divider/combiner concept provides reflection cancelation, and 1-to-N or N:/1 (arbitrary N, including odd numbers) splitting or summing with equal or unequal power division/summation. Additionally, it has inherently low loss due to its use of low impedance transmission lines. It can be implemented in most...
In this work, we present a new topology for realizing a grounded inductor employing only a single current conveyor (CC), called modified dual-output differential difference current conveyor (MDO-DDCC), and a minimum number of passive components, two resistors, and one grounded capacitor. The non-ideality effects of the active element on the simulated inductor are investigated. To demonstrate the performance...
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