Abstract
This presentation will introduce equivalent circuit modeling techniques that have been used to simulate the focusing of acoustic signals in a 1-D waveguide. The presence of resonators in the near field of the focus location decreases the effective wavelength of the focus and leads to super resolution. A circuit is created that represents the complete waveguide with the sources. Circuit elements are used to represent both resonators and the propagation of the wave. The spatial extent is simulated at individual frequencies using additional circuit junctions. The wideband response is determined by the superposition of the individual frequency results. Important parameters such as resonator density and the quality factor of the resonators are examined and their influence on the focus will be presented. Methods for solving the circuit models and improving computational efficiency will also be discussed.
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