We present free-space microwave measurements on composite metamaterials(CMMs) consisting of split ring resonators(SRRs) and wires on alternating boards, also known as left-handed material(LHM). Our experiments are based on a type of CMMs with unique configurations and the transmission measurements performed in free space exhibit a pass band extending from 10.5 to 13.5GH. The widely belief of the pass band is that the stop bands of the SRRs alone and the wires alone constitute a clear demonstration of left-handed (LH) behaviour. The LH behaviour only take place in the medium with simultaneously...
