Abstract
The abundance of synthesis solutions for passive LC filters of many kinds suggests the idea to accommodate these circuits for production in CMOS. The main obstacle for that is the inductive component being it a simple inductor or a transformer. Solutions were found in the past to simulate both the inductor and transformer by a connection of operational amplifiers and capacitors. That idea was elaborated in this chapter allowing synthesis on active Gm-C filters based on existing passive LC prototypes. Of course, that idea was here extended to two-phase circuits to allow fully automatic synthesis of this kind of solutions. Illustrative examples demonstrate that no limits on the types of transmission zeros and the order of the filter may exist if the RM software for filter design is used.
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References
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Litovski, V. (2022). Use of LC-to-Gm-C Transformation for Synthesis of Gm-C Single- and Two-Phase Integrated Filters. 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_5
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DOI: https://doi.org/10.1007/978-981-16-6561-5_5
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