This　paper　proposes　a　solution　to　address　the　issue　of　fluctuating　coupling　coefficients　in　wireless　power　transmission　for　electric　vehicles.　The　proposed　solution　involves　the　utilization　of　the　novel　Double　Quadrature　D　(DQD)　magnetic　coupler　with　lightweight　magnetic　core,　which　optimizes　the　structure　of　the　part-coverage　magnetic　core　and　incorporates　stacked　D　coils.　This　approach　enhances　the　coupling　performance　while　minimizing　the　usage　of　magnetic　core.　The　paper　includes　mathematical　modeling　and　analysis　of　the　DQD　magnetic　coupler,　as　well　as　the　derived　output　characteristics　of　the　wireless　power　transfer　(WPT)　system　based　on　the　inductance-capacitance-capacitance-series　(LCC-S)　compensation　topology.　In　addition,　the　parameters　are　optimized　to　improve　coupling　capability,　anti-offset　performance,　and　overall　lightweight　design.　A　comparative　analysis　is　conducted　among　the　coupling　coefficient　retention　capability　of　the　DQD　magnetic　coupler　and　other　magnetic　coupler,　highlighting　the　superior　multi-directional　anti-offset　performance　of　the　DQD　magnetic　coupler.　To　validate　the　proposed　solution,　a　1kW　experimental　prototype　is　constructed　the　measured　and　simulated　results　demonstrate　a　consistent　agreement,　thereby　confirming　the　feasibility　of　the　proposed　DQD　magnetic　coupler　to　significantly　reduce　magnetic　core.　IEEE