Abstract
The cascade realization of filters is the “natural one” since a correspondence is usually established between the transfer function expressed in factored form and a cascade of second-order cells (with additional first-order cell in the case of odd order filters). Nevertheless, the mapping from a transfer function into a cascade of cells is facing obstacles which are related to the multiple combinations in the pole–zero pairing and multiple orders of extraction (order of the cells from the source to the load). In the case of Gm-C technology, an additional problem was observed and solved here for the first time. Since a Gm-C cell may have finite input impedance, it loads the previous one so changing its (and the overall) transfer function.
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Litovski, V. (2022). Cascade Realization of Active Gm-C Circuits. In: Gm-C Filter Synthesis for Modern RF Systems. Lecture Notes in Electrical Engineering, vol 807. Springer, Singapore. https://doi.org/10.1007/978-981-16-6561-5_4
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DOI: https://doi.org/10.1007/978-981-16-6561-5_4
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