Alireza Saberkari

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A low quiescent current output-capacitorless CMOS LDO regulator based on a high slew-rate current-mode transconductance amplifier (CTA) as an error amplifier is presented. Load transient characteristic of the proposed LDO is improved even at low quiescent currents, by using a local common-mode feedback (LCMFB) in the proposed CTA. This provides an increase(More)
This paper presents a topology for Gilbert-cell mixer that leads to a better performance in terms of noise figure, conversion gain and IIP3 at low supply voltage. In this architecture, we have used an extra LC filter for reduction parasitic capacitance noise in switching. Simulation results show the voltage CG of 17.45 dB, NF of 7.04 dB, and IIP3 of -4 dBm.
The power-delay product is a direct measurement of the energy expanded per operational cycle of an arithmetic circuit. Lowering the supply voltage of the full adder cell to achieve low power-delay product is a sensible approach to improve the power efficiency at sustainable speed of arithmetic circuits composed of such instances at high level design. In(More)
A new Persian license plate recognition algorithm is presented. These operations are highly susceptible to error, especially where the image consists of large amount of either vehicle's linked components or the other existing objects. Although the proposed character recognition procedure is highly optimized for Persian plates, the localization parts can be(More)
This article presents a low quiescent current output-capacitorless quasi-digital complementary metal-oxidesemiconductor (CMOS) low-dropout (LDO) voltage regulator with controlled pass transistors according to load demands. The pass transistor of the LDO is segmented into two smaller sizes based on a proposed segmentation criterion, which considers the(More)
This paper presents a low voltage highly linear CMOS up conversion mixer based on current conveyor (CCII), which converts an input of 100MHz IF signal to an output of 2.4GHz RF signal. The linearity of the designed mixer is greatly enhanced by utilizing a fully differential current conveyor. The flipped voltage follower (FVF) technique is applied for(More)