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Experimental verification that a metamaterial wedge supports the propagation of a bandlimted modulated signal

We have performed CW measurements on the metamaterial wedge providing detailed insight into its behavior and operating bandwidth limitations. Measurements with a narrowband modulated signal have demonstrated that negative refraction exists with a practical QPSK signal modulation scheme. The CW measurements indicated that the metamaterial wedge would not allow the successful transmission of a QPSK modulated signal having bandwidths in excess of 4% to 5%. This bandwidth limitation was demonstrated experimentally where successful transmission of a modulated signal having 406.4 MHz was performed. A modulated signal having a bandwidth of 838 MHz could not be successfully transmitted through the wedge.