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The classical algorithms in DOA (Direction Of Arrival) estimation endure two obvious drawbacks that they are invalid when faced with the time-varying signals and difficult to be implemented in hardware. In this paper, we propose that Locally Competitive Algorithm (LCA) be applied to estimate the time-varying signals' DOA innovatively. In order to solve the l1-minimization problems rapidly and efficiently,...
In this paper, we propose a sensor array consisting of multiple quartz crystal microbalances (QCMs) surrounded by phononic crystals. Phononic crystals are utilized for isolating acoustic energy of individual bulk acoustic wave sensor and suppressing the interference. The resonance response of a QCM was calculated by finite element analysis. A square-lattice phononic crystal structure was designed...
In recent years, multiple bulk acoustic wave sensors have been fabricated on a single piezoelectric substrate to develop a sensor array for the detection of multiple analyte parameters. However, such an array may induce acoustic interference between adjacent sensors. Phononic crystals are synthetic structures with periodic variation of elastic property. A phononic crystal with band gaps forbids acoustic...
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