Electronically Reconfigurable Universal Filter Based on VDTAs
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The proposed filter extends features of the previously presented Voltage Differencing Transconductance Amplifiers (VDTAs)-based frequency filter. It brings the new advantage of an electronic reconfiguration of its transfer. The proposed structure provides reconnection-less change between low-pass, band-pass, high-pass, band-stop and all-pass transfer functions. The electronic control of the filter parameters such as the pole frequency and quality factor remain preserved. The theoretical assumptions are supported by PSpice simulations using transistor-level models.
Keywordsadjustable current amplifer, electronic control, electronic reconfiguration, universal filter, voltage differencing transconductance amplifier
Document typePeer reviewed
SourceProceedings of 28th International Conference Radioelektronika 2018. 2018, p. 1-4.