A tunable filter comprising: • a filter input (VIN), • a filter output (VOUT), • at least one feedback loop coupled between the filter output (VOUT) and the filter input (VIN), wherein the at least one feedback loop comprises at least one tunable feedback capacitance (C1, C2), which is configured to tune a cut-off frequency (fo) of the tunable filter; and • an active element coupled between the filter input and the filter output and configured to drive the at least one tunable feedback capacitance (C1, C2), wherein said active element loaded by the at least one tunable feedback capacitance (C1, C2) has an open-loop transfer function with a primary pole ( ω p 1 ) and at least one secondary pole ( ω p 2 ), wherein the active element is an operational amplifier (OPAMP), wherein the active element comprises a first stabilization element (CP, CF) coupled to a first internal node (D) of the active element , wherein the first stabilization element (CP, CF) is a tunable capacitance and configured to be tuned by an amount proportional to a change of the at least one tunable feedback capacitance (C1, C2) in order to establish a linear relationship between a location of the primary pole ( ω p 1 ) and a location of the at least one secondary pole ( ω p 2 ) of the tunable filter during tuning of the cut-off frequency of the tunable filter. • a filter input (VIN), • a filter output (VOUT), • at least one feedback loop coupled between the filter output (VOUT) and the filter input (VIN), wherein the at least one feedback loop comprises at least one tunable feedback capacitance (C1, C2), which is configured to tune a cut-off frequency (fo) of the tunable filter; and • an active element coupled between the filter input and the filter output and configured to drive the at least one tunable feedback capacitance (C1, C2), wherein said active element loaded by the at least one tunable feedback capacitance (C1, C2) has an open-loop transfer function with a primary pole ( ω p 1 ) and at least one secondary pole ( ω p 2 ), wherein the active element is an operational amplifier (OPAMP), wherein the active element comprises a first stabilization element (CP, CF) coupled to a first internal node (D) of the active element , wherein the first stabilization element (CP, CF) is a tunable capacitance and configured to be tuned by an amount proportional to a change of the at least one tunable feedback capacitance (C1, C2) in order to establish a linear relationship between a location of the primary pole ( ω p 1 ) and a location of the at least one secondary pole ( ω p 2 ) of the tunable filter during tuning of the cut-off frequency of the tunable filter. wherein said active element loaded by the at least one tunable feedback capacitance (C1, C2) has an open-loop transfer function with a primary pole ( ω p 1 ) and at least one secondary pole ( ω p 2 ), wherein the active element is an operational amplifier (OPAMP), wherein the active element comprises a first stabilization element (CP, CF) coupled to a first internal node (D) of the active element , wherein the first stabilization element (CP, CF) is a tunable capacitance and configured to be tuned by an amount proportional to a change of the at least one tunable feedback capacitance (C1, C2) in order to establish a linear relationship between a location of the primary pole ( ω p 1 ) and a location of the at least one secondary pole ( ω p 2 ) of the tunable filter during tuning of the cut-off frequency of the tunable filter. <EOS>