Abstract
The demonstration of organic semiconductor based monolithic surface acoustic wave (SAW) convolver has been reported. The characteristic low availability of intrinsic free charge in organic semiconducting polymer favors depletion mode of operation, increasing the effective nonlinear interactions. Input signals at different combinations of frequencies were used and the observed convolved signals showed notably high efficiency without the need of an applied bias. The record high efficiency has been -13.2 dBm for 42 MHz input signals at optimum input power of -6 dBm. The experimental results and the convolution mechanism were verified via numerical analysis in MATLAB.
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