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It has been found that stochastic resonance can filter out the image noise and enhance the image. However, since the stochastic resonance has a characteristic that the high frequency energy is shifted to the low frequency, the denoised image will lose detail and become blurred. Because the noise and detail of the image are mainly distributed in the high frequency band, image denoising and detail retention...
LCL-type grid-connected inverter is largely utilized in renewable generation system due to high harmonic suppression. In order to tackle the resonance issue induced by LCL-type filters, grid-side current feedback active damping method (GCFADM) without extra sensors has been extensively investigated. However, the damping characteristic under GCFADM has not been fully evaluated. In this paper, an improved...
Common mode noise on differential microstrip lines can be suppressed by PCB embedded filters. These filters are basically resonators, and only the common mode signal can couple to them. Though such structure suppress common mode signal only in narrow bands because of the resonant nature, they can be combined to produce broadband filtering effect. The dimension of such filters could be further reduced...
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