Title :
Experimental verification that a metamaterial wedge supports the propagation of a bandlimted modulated signal
Author :
Hanna, D.L. ; Best, S.R. ; Turchinetz, B.W. ; Derov, J.S.
Author_Institution :
MITRE Corp., Bedford, MA
Abstract :
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.
Keywords :
bandlimited signals; metamaterials; quadrature phase shift keying; QPSK signal modulation; bandlimited modulated signal; bandwidth 838 MHz; experimental verification; metamaterial wedge; narrowband modulated signal; Bandwidth; Constellation diagram; Electromagnetic propagation; Frequency measurement; Metamaterials; Narrowband; Performance evaluation; Quadrature phase shift keying; Signal analysis; Testing;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2008. AP-S 2008. IEEE
Conference_Location :
San Diego, CA
Print_ISBN :
978-1-4244-2041-4
Electronic_ISBN :
978-1-4244-2042-1
DOI :
10.1109/APS.2008.4619994
