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Current-mode digital circuits for low voltage mixed A/D systems

100%

Guziński A. , Pawłowski P. , Kaniewski J. , Czwyrow D. , Maslennikow O.

tom Vol. 46, nr 4

443-458

Current-mode digital circuits operating with constant, continuous power supply current are presented. Layout of introduced gate and static, classical voltage inverter layout are shown for comparison. SPICE simulations based on extracted parameters of these gates are presented. The elementary operations that form current mode gate basis and elementary logical operations in this basis have been described. The problem of arithmetic-logic unit design based on the current-mode gates is considered.

Four-channel multiplexer on surface plasmon polaritons development and research

67%

Nevinskyі D. V. , Zakalyk L. I. , Lebid S. Y. , Korzh H. I. , Pavlysh V. A.

tom Vol. 7, no. 1

7--11

Simulation of the surface plasmon polariton (SPP) distribution in the 10 μm long four-channel multiplexer is conducted in present paper. The excitation of the SPP was done using the 632.8 nm pulse laser with 50 fs pulse duration. The simulation processes of the SPP propagation in the fourchannel multiplexer were performed for the latter switched as a splitter as an adder. Though the obtained signal strength is low due to ohmic losses and signal reflections in the middle of the waveguide it is possible to registrate it. The detailed procedure of waveguides preparation, analysis and registration of SPP propagation is described in the paper. For the proposed model verification the two-channel 20 μm long splitter was formed by optical projection lithography. Studies have shown that the SPP is distributed throughout the whole structure of the 20 μm long two-channel splitter with a partial extinction due to ohmic losses.