Hardware

Comparison of the Fully-Differential and Single-Ended Solutions of the Frequency Filter With Current Followers and Adjustable Current Amplifier

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Executive Summary

Two solutions of universal and adjustable current-mode filters are presented in this contribution. The first of them is able to process Single-Ended (S-E) signals in communications and the other can operate Fully-Differentially (F-D) and therefore is well applicable for balanced transmission lines. Both circuits have adjustable quality factor and both are analyzed in this contribution. Their simulation results are compared to each other. F-D structures, usually used on balanced communication lines, have several benefits when compared to the Single-Ended (S-E) circuits.

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