Design of active transimpedance band-pass filters with different Q values

Transimpedance filter is a filter which realises a transimpedance transfer function. In this article, the design methods for the transimpedance band-pass filter are presented. The circuit topologies and parameter calculation formulas of three bi-quadratic transimpedance band-pass filter topologies with low-, medium- and high-Q values are proposed, respectively. A high-order transimpedance filter can be obtained by realising a bi-quadratic transimpedance filter first and then cascaded with voltage-mode bi-quads. A high-order transimpedance filter design example is given; the simulation and the measured results verify the effectiveness of the proposed transimpedance filter design method.