To　improve　the　power　level　of　a　diode　rectifier,　a　multi-phase　diode　rectifier　can　be　employed　to　increase　the　current　rating.　This　brief　proposes　a　passive　current　balancing　method　for　a　multi-phase　diode　rectifier　in　a　series-series　compensated　wireless　power　transfer　system.　For　an　N-phase　diode　rectifier,　the　receiver-side　compensating　capacitance　is　split　into　N　branches,　forming　a　parallel　resonant　network　with　the　newly　added　parallel　resonant　inductors.　The　circulating　currents　can　be　greatly　suppressed　by　the　parallel　resonant　network.　The　resonant　inductors　only　withstand　differential-mode　currents,　which　are　small.　Thus,　these　inductors　are　small　and　low-cost.　Experimental　results　reveal　that　the　proposed　method　can　well　balance　the　phase　currents　of　the　three-phase　diode　rectifier.　©　2004-2012　IEEE.