Analog Signal Processing in Transmission Line Metamaterial Structures
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Several novel dispersion-engineered CRLH TL metamaterial analog signal processing systems, exploiting the broadband dispersive characteristics and design ﬂexibility of CRLH TLs, are presented. These systems are either guided-wave or radiated-wave systems, and employ either the group velocity or the group velocity dispersion parameters. The systems presented are: a frequency tunable impulse delay line, a pulse-position modulator, a frequency discriminator and real-time Fourier transformer, pulse generators, an analog real-time spectrum analyzer, a frequencyresolved electrical gating, a spatio-temporal Talbot effect imager, and analog true-time delayer. They represent a new class of impulse-regime metamaterial structures, while previously reported metamaterials were mostly restricted to the harmonic regime.
KeywordsAnalog signal processing, dispersion engineering, transmission line metamaterials, leaky-wave antennas, Talbot effect, real-time spectrum analyzers, pulseposition modulators, real-time Fourier transformation, true-time delayers
Document typePeer reviewed
Document versionFinal PDF
SourceRadioengineering. 2009, vol. 18, č. 2, s. 155-167. ISSN 1210-2512
- 2009/2