Nonpolarized　and　polarized　coils　are　utilized　in　an　electric　vehicles　wireless　charging　system.　These　coils　are　decoupled　from　each　other　at　the　central　position,　leading　to　interoperability　issues.　This　letter　proposes　a　new　decoupling　method　and　a　quadrupole　receiving　coil　with　series-connected　diode　rectifiers　for　interoperability　purposes.　Decoupling　windings　are　added　to　achieve　decoupling　of　the　four　receiving　poles.　The　total　mutual　inductance　between　the　transmitting　coil　and　the　quadrupole　receiving　coil　is　the　summation　of　the　absolute　values　of　the　mutual　inductances　between　the　transmitting　coil　and　the　four　receiving　poles.　In　this　way,　the　proposed　quadrupole　coil　can　be　tolerant　with　not　only　the　nonpolarized　transmitting　coil,　but　also　with　the　polarized　transmitting　coils　along　two　perpendicular　directions.　The　experimental　results　confirm　that　a　large　coupling　and　efficient　power　transfer　can　be　achieved　with　the　nonpolarized　coil　and　the　polarized　coil　placed　at　two　perpendicular　directions　with　good　misalignment　tolerance.　©　1986-2012　IEEE.