The aim of the research in this thesis is to model and simulate an integrated coupled active inductor as a possible replacement for an integrated planar coupled inductor for filtering common mode noise on differential communication lines.
In order to design an active coupled inductor it was first necessary to know the physical background of the planar coupled inductor. A model of an ideal coupled inductor in the hardware description language Verilog-A was developed, the main purpose of which was the verification and characterisation of the active coupled inductor circuit.
In the thesis, all four possible designs of active coupled inductors are presented, differing in the way they are connected and in their topology. The active coupled inductor consists of a transconductance amplifier and a capacitor.
The transconductance amplifiers that make up the lossless active coupled inductor circuit were replaced in the next step by lossy transconductance amplifier models and a characterisation of the new circuit was made. The simulation results demonstrated the performance of the active coupled inductor circuit and the possibility of integrating the circuit in CMOS technology.
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