We introduced a novel LCCC lumped-element balun to suppress the unwanted common-mode current in RF coils and RF systems. Unlike the 4-element Lattice balun consisting of two capacitors and two inductors (LCCL), this design has 3 capacitors and only 1 inductor. With fewer inductors (previous lumped-element baluns need at least 2 inductors), this LCCC balun can further be miniaturized and has lower insertion loss.
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