Abstract

Several differences between the low-frequency interference cancellation model and the microwave interference cancellation model are investigated in this paper, with emphasis on their effects on the interference cancellation ratio and weight converging speed. When comparing the results of the computer imitation with measurements for a real microwave interference cancellation system, it can be seen that the nonlinear property of the microwave mixers limits the weight converging speed, the finite maximum attenuation of the microstrip balun bipolar p-i-n diode voltage-controlled attenuator limits the interference cancellation ratio, and the weights oscillate because of the mixers used in the system. ©1999 John Wiley & Sons, Inc. Microwave Opt Technol Lett 21: 425–428, 1999.

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