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iii ACKNOWLEDGEMENTS I would like to express my sincere gratitude to my thesis supervisor, Prof. Avni Morgül for his invaluable guidance, patience, motivation, advice and contributions throughout this study. His guidance helped me in all the time of research and writing of this thesis. It was really a pleasure for me to work with him. I would like to thank(More)
The multi-valued logic circuits provide very small chip size, higher speed, and a small number of interconnections. However, the main drawback of these circuits is the lower noise margin and it is necessary to restore the nominal levels of the signal after a certain number of cascaded stages. A new current-mode CMOS restoration circuit is presented and(More)
A higher-radix algebra for full-addition of two numbers is described and realised by combining multivalued logic min, max, literal and cyclic operators in terms disjoint terms. The latter operator is designed by using a current-mode threshold circuit while the other operator is realised by only voltage-mode switching circuits. The threshold circuit employed(More)
In this study, the reflected signal from the ionosphere in monostatic HF surface wave radar system is investigated in terms of atmospheric attenuation and Doppler spectral dispersion, by Chapman distribution and auto-correlation function when the process is stationary and time variant, respectively. The model-based analysis shows that doppler dispersion(More)