A novel single-input-single-output multifunctional filter based on current-starved Pseudo-floating gate

In this paper a Multifunctional single-input-single-output (SISO) voltage-mode filter, based on Current-Starved Pseudo-Floating Gate (CSPFG) inverters is presented. Using 3 bias voltages we are able to change the circuits functionality to perform various types of filter operations such as band pass, band reject, low and high pass. These filters have the advantage of being tunable, i.e. the frequency band can be tuned using bias voltages. Typical applications are detection of high frequency components in sensor signals, i.e. airbag sensors. AC simulation of the inverter is presented to show that the circuit is suited for high performance filter design.

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