Figure 4
From: Broadband non-reciprocal transmission of sound with invariant frequency
The transmission measurements.
The experimental results of the transmissions along the forward (black squares) and reverse directions (red dots) are plotted for comparison. The blue dashed line indicates the location of the working point, chosen as 3 kHz in the current design, for which the resulting device is desired to yield the optimal performance. The measurements were repeated 3 times and the results are virtually identical each time.
