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This letter presents a low-power transimpedance amplifier (TIA), supporting both 25 and 40-Gb/s communication. It exhibits an optical modulation amplitude sensitivity of −10.6 dBm at 25 Gb/s and −6.4 dBm at 40 Gb/s using a photodiode with a responsivity of 0.55 A/W. The TIA consumes 158 mW from a 2.5 V supply and was manufactured in a 0.13-$\mu \text{m}$ SiGe BiCMOS process. Compared with the state...
The friction welding supersonic C scanned pictures will introduce the noise in process of gatherring and conversion, and the disturbance of the noise to the image effects image's quality, which brought the enormous difficulties for image characteristic information extraction and analysis. Therefore, this article will propose a denoising analysis method, which obtains the scanned picture to the experiment...
The ultrasonic testing signal of super alloy is always immingled with the scattering noise. According to the phenomena, this paper presents a kind of signal model of ultrasonic testing for super alloy and a wavelet transform de-noising algorithm based on modulus maximum. The characters of producing mode and wavelet transform of noise and signal are discussed. In the wavelet transformation mold maximum...
Considering the requirements of real time and robustness for the segmentation algorithms for mobile robots, an optimal threshold segmentation algorithm based on mathematical morphology was studied. Two improved measures, i.e., introducing an improved combination filter of median and multi-scale, and increasing morphological opening and closing operation, were proposed for the general optimal threshold...
In recent years, haptic devices have been developed to give users the sensation of physically touching virtual objects. However, these studies have focused mainly on developing haptic hardware, and algorithms for synthesizing the tactile sensation signals have not been well studied. In this paper, a technique is proposed for synthesizing tactile vibrational signals based on the ability to measure...
To filter out various kinds of noise of different intensities in gray images, a highly adaptive morphological filter based on multiple structure and multi-scale elements was proposed. This algorithm employs a morphology filter based on multiple structure and multi-scale elements to filter the images, followed by image fusion processing with the weights calculated from the image entropies, before finally...
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