This　work　presents　the　measurements　of　square　split　resonant　rings　and　metal　wires　(MWs)　and　C　split　resonant　rings　and　MW　samples　through　a　prism　refraction　experiment.　Negative　refraction　properties　are　observed　in　both　models,　and　the　cell　shapes　are　found　to　play　an　important　role　in　resonant　frequency　of　the　metamaterial　samples.　A　new　method　is　proposed　to　strictly　broaden　the　negative　refraction　passband　through　overlapping　the　bandwidths　using　mixed　split　resonant　rings　and　MWs.　The　broadened　negative　refraction　bandwidth　over　a　range　of　8-12　GHz　wider　than　the　other　models　is　proved　by　both　simulative　and　experimental　results,　and　provided　a　good　metamaterial　property.