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The paper presents proposal of a fully-differential fractional (1+α)-order low-pass filter. The filter operates in the current mode. It is based on the well-known follow-the-leader feedback (FLF) topology of the the 3rd-order filtering structure utilizing fully-differential current followers (FD-CFs) and adjustable current amplifiers (ACAs), in our case, in order to approximate fractional-order low-pass...
Proposal of a fractional (1+α)-order low-pass filter is presented in this paper. The proposed filter operates in the current-mode and it is designed using multi-output current followers (MO-CFs) and adjustable current amplifiers (ACAs). The filter possesses ability to electronically control its order and also the pole frequency. Verification of actual function of the filter is supported by the simulation...
Four adjustable band-pass filtering solutions are presented and also compared in this paper. Two of them are suitable for single-ended signal processing and the other two are their fully-differential equivalents. Filters are built with two types of active elements. First is a simple current follower with multiple outputs and second is a current amplifier with adjustable current gain that is used to...
The paper deals with a necessity of copping the current output responses flowing trough grounded passive elements in the modern active biquad working in the current mode. It is important to use another active block with low input resistance (current follower, current conveyor, etc.) for the impedance matching. This problem is demonstrated in the simple biquadratic structure using two modern functional...
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