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Jun-fa Mao - One of the best experts on this subject based on the ideXlab platform.

  • A compact common-mode suppression filter for Differential Signal transmission with slow-wave structure
    2017 Sixth Asia-Pacific Conference on Antennas and Propagation (APCAP), 2017
    Co-Authors: Wanli Jiang, Min Tang, Jun-fa Mao
    Abstract:

    A compact wideband filter is designed for common mode noise (CMN) suppression in high-speed Differential Signaling. It is realized by the patch-bridge (PB) patterns on the ground plane beneath the center of Differential lines. A two-stage version of the filter units is used to enhance the common-mode rejection level of stopband. Furthermore, a slow-wave structure is introduced between the two filter units, which not only contributes to the miniaturization, but also improves the performance of the proposed CMN filter. The simulated and measured results of the prototype indicate that the CMN can be suppressed over 20 dB from 3.24 to 11.29 GHz by the filter, while good transmission characteristic can be achieved for the Differential Signals.

  • An Ultra-Wideband Common-Mode Suppression Filter Based on S-DBCSRR for High-Speed Differential Signals
    IEEE Microwave and Wireless Components Letters, 2015
    Co-Authors: Hao-ran Zhu, Jun-fa Mao
    Abstract:

    In this letter, an ultra-wideband common mode filter is proposed for high-speed Differential Signal transmission. By etching a slot in the inner patch of a double slit complementary split ring resonator (S-DBCSRR), the noise rejection bandwidth can be expanded. The equivalent circuit model and surface current distribution are given to explain the working principle of the filter. From the simulated and measured results, it is found that the fractional bandwidth of the presented filter is 92% with a noise suppression level of 20 dB, and the Differential Signal can propagate with little degradation.

  • A novel wideband common-mode suppression filter for Differential Signal transmission
    2014 IEEE Electrical Design of Advanced Packaging & Systems Symposium (EDAPS), 2014
    Co-Authors: Fang-xu Yang, Min Tang, Jun-fa Mao
    Abstract:

    A novel wideband filter is designed for common mode noise (CMN) suppression in high-speed Differential Signaling. The dumbbell-shaped defected ground structure (DGS) is periodically etched in the return path of Differential line to suppress CMN. In order to improve the Signal quality of the Differential transmission, a periodic stub-loaded structure is designed to compensate the discontinuity of the odd-mode characteristic impedance. Furthermore, a slow-wave structure is employed to decrease the Bragg frequency and then enhance the bandwidth of CMN suppression effectively without enlarging the circuit size. The simulated and measured results of the prototype indicate that the CMN can be suppressed over 20 dB from 3.2 to 8.6 GHz by the filter, while good transmission characteristic can be achieved for the Differential Signals.

Laurent Journot - One of the best experts on this subject based on the ideXlab platform.

  • Differential Signal transduction by five splice variants of the pacap receptor
    Nature, 1993
    Co-Authors: Dietmar Spengler, Christian Waeber, C Pantaloni, Florian Holsboer, Joel Bockaert, Peter H Seeburg, Laurent Journot
    Abstract:

    The two forms of pituitary adenylyl cyclase-activating polypeptide (PACAP-27 and -38) are neuropeptides of the secretin/glucagon/vasoactive intestinal polypeptide/growth-hormone-releasing hormone family and regulate hormone release from the pituitary and adrenal gland. They may also be involved in spermatogenesis, and PACAP-38 potently stimulates neuritogenesis and survival of cultured rat sympathetic neuroblast and promotes neurite outgrowth of PC-12 cells. The PACAP type-I receptor (found in hypothalamus, brain stem, pituitary, adrenal gland and testes), specific for PACAP, is positively coupled to adenylyl cyclase and phospholipase C. The recently cloned type II receptor does not discriminate between PACAP and vasoactive intestinal polypeptide and is coupled to only adenylyl cyclase. Here we have used a new expression cloning strategy, based on the induction of a reporter gene by cyclic AMP, to isolate a complementary DNA encoding the type-I PACAP receptor. On transfection of this cDNA, both PACAP-27 and -38 stimulate adenylyl cyclase with similar EC50 values (50% effective concentration, 0.1-0.4 nM), whereas only PACAP-38 stimulates phospholipase C with high potency (EC50 = 15 nM). Four other splice variants were isolated with insertions at the C-terminal end of the third intracellular loop. Expression of these cDNAs revealed altered patterns of adenylyl cyclase and phospholipase C stimulation, suggesting a novel mechanism for fine tuning of Signal transduction.

Chun-long Wang - One of the best experts on this subject based on the ideXlab platform.

  • ISPACS - Bended Differential Stripline Using Timing-Offset Differential Signal
    2019 International Symposium on Intelligent Signal Processing and Communication Systems (ISPACS), 2019
    Co-Authors: Chih-chen Yeh, Wen-ju Chen, Chun-long Wang
    Abstract:

    In this paper, a bended Differential microstrip line using the timing-offset Differential Signal is proposed. With the help of the timing-offset Differential Signal, the time-domain through common-mode noise could be greatly reduced from 0.068 V to 0.026 V. By replacing the microstrip line with the stripline, a bended Differential stripline using the timing-offset Differential Signal is formed. With the help of the timing-offset Differential Signal, the time-domain through common-mode noise could be much better reduced from 0.051 V to 0.013 V, which is much smaller than 0.026 V.

  • Differential Serpentine Delay Line Using Strongly-Coupled Turns with Timing-Offset Differential Signal
    2019 Electrical Design of Advanced Packaging and Systems (EDAPS), 2019
    Co-Authors: Chih-chen Yeh, Chun-long Wang
    Abstract:

    In this paper, the time-domain-through common-mode noise of the Differential serpentine delay line using the strongly-coupled turns is investigated and found to be 0.0154 V. In order to further reduce the time-domain-through common-mode noise, a timing-offset Differential Signal is utilized. The Differential serpentine delay line using the strongly-coupled turns with the timing-offset Differential Signal can greatly reduce the time-domain-through common-mode noise from 0.0154 V to 0.0065 V, which is more than one-half reduction.

  • Common-mode noise reduction of right-angled coupled stripline using timing-offset Differential Signal
    2016 IEEE 20th Workshop on Signal and Power Integrity (SPI), 2016
    Co-Authors: Chun-long Wang
    Abstract:

    In this paper, a right-angled coupled microstrip line using the timing-offset Differential Signal is proposed. The right-angled coupled microstrip line using the timing-offset Differential Signal can greatly reduce the TDT common-mode noise from 68 mV to 26 mV as compared with the right-angled coupled microstrip line using zero timing-offset Differential Signal. In order to further reduce the TDT common-mode noise, a right-angled coupled stripline using the timing-offset Differential Signal is proposed. As compared with the right-angled coupled microstrip line using the timing-offset Differential Signal, the TDT common-mode noise is further reduced from 26 mV to 13 mV. In order to verify the simulation results, measurement is conducted in the time domain where the measurement results are in good agreement with the simulation results.

  • Common-Mode Noise Suppression of Differential Serpentine Delay Line Using Timing-Offset Differential Signal
    IEEE Transactions on Electromagnetic Compatibility, 2015
    Co-Authors: Kuan-chung Chen, Chun-long Wang
    Abstract:

    In this paper, in order to reduce the common-mode noise, a Differential serpentine delay line using the timing-offset Differential Signal is proposed. The time-domain transmission common-mode noise is greatly reduced from 0.0266 to 0.0126 V, and the time-domain reflection Differential-mode noise is maintained the same as compared with the Differential serpentine delay line using the zero timing-offset Differential Signal. Besides, the Differential-to-common mode conversion is reduced; the Differential-to-Differential and Differential-to-common mode reflections are kept small. Furthermore, the Differential-to-Differential mode transmission is maintained the same and the eye diagram is improved. In order to verify the simulation results, scaled up circuits are fabricated and measured where the measurement results are in good agreement with the simulation results.

  • Reduction of Common-Mode and Differential-Mode Noises Using Timing-Offset Differential Signal
    IEEE Transactions on Components Packaging and Manufacturing Technology, 2015
    Co-Authors: Bao-ren Huang, Kuan-chung Chen, Ruei-ying Fang, Chun-long Wang
    Abstract:

    In this paper, the timing-offset Differential Signal is proposed to reduce the common-mode and Differential-mode noises induced by the right-angled Differential transmission line. The right-angled Differential transmission line using the timing-offset Differential Signal can greatly reduce the time-domain transmission common-mode noise from 0.065 to 0.019 V and the time-domain reflection Differential-mode noise from 0.033 to 0.023 V as compared with the right-angled Differential transmission line using a zero offset time Differential Signal. Besides, the Differential-to-common-mode conversion is reduced from -6.3 to -12.4 dB. Moreover, the Differential-mode transmission is larger than -1.25 dB and the Differential-mode reflections are smaller than -17 dB from dc to 6 GHz. In order to verify the simulation results, a real circuit is fabricated and measured where the measurement results are in good agreement with the simulation results.

R. Ponti - One of the best experts on this subject based on the ideXlab platform.

  • Statistical analysis of the 2D-DCT coefficients of the Differential Signal for images
    Signal Processing: Image Communication, 1992
    Co-Authors: Fabio Bellifemine, A. Capellino, Antonio Chimienti, Romualdo Picco, R. Ponti
    Abstract:

    Abstract Block-matching motion compensation techniques are widely used in image coding algorithms. A Differential Signal with different characteristics from the original Signal is then generated. It is important to know the statistical properties of the Signal source in order to correctly characterize some parameters of the digital image coding scheme. In this paper a statistical study of the 2D-DCT coefficients of the motion-compensated blocks is performed. The results of this study indicate that the statistics of the coefficients are best approximated by a Laplacian pdf (probability density function). The influence of some types of normalization is investigated and the corresponding pdf's are estimated. An analysis indicates that the Laplacian pdf may be used as a good approximation for the statistical properties of the normalized coefficients.

Leyla Soleymani - One of the best experts on this subject based on the ideXlab platform.

  • Enhancing the sensitivity of photoelectrochemical DNA biosensing using plasmonic DNA barcodes and Differential Signal readout
    Angewandte Chemie (International ed. in English), 2021
    Co-Authors: Amanda Victorious, Sudip Saha, Richa Pandey, Leyla Soleymani
    Abstract:

    Photoelectrochemical biosensors hold great promise for sensitive bioanalysis; however, similar to their electrochemical analogues, they are highly affected by the variable backgrounds caused by biological matrices. We developed a new PEC biosensing strategy that uses Differential Signal generation, combining Signals from two separate but correlated binding events on the biosensor, for improving the limit-of-detection, sensitivity, and specificity of PEC DNA biosensors in biological samples. In this assay, the binding of unlabeled target DNA is followed by the capture of a Signal amplification barcode featuring a plasmonic nanoparticle. The interaction of the plasmonic barcode with the semiconductive building blocks of the biosensor results in significant Signal amplification, and together with Differential Signal processing enhances the limit of detection and sensitivity of the assay by up to 15- and three-fold, respectively, compared to the previously-used PEC assays with a single binding event, demonstrating a limit of detection of 3 fM.

  • Enhancing the sensitivity of photoelectrochemical DNA biosensing using plasmonic DNA barcodes and Differential Signal readout.
    Angewandte Chemie (International ed. in English), 2021
    Co-Authors: Amanda Victorious, Sudip Saha, Richa Pandey, Leyla Soleymani
    Abstract:

    PEC biosensors hold great promise for sensitive bioanalysis; however, similar to their electrochemical analogues, they are highly affected by the variable backgrounds caused by biological matrices. We developed a new PEC biosensing strategy that uses Differential Signal generation, combining Signals from two separate but correlated binding events on the biosensor, for improving the limit-of-detection, sensitivity, and specificity of PEC DNA biosensors in biological samples. In this assay, the binding of unlabeled target DNA is followed by the capture of a Signal amplification barcode featuring a plasmonic nanoparticle. The interaction of the plasmonic barcode with the semiconductive building blocks of the biosensor results in significant Signal amplification, and together with Differential Signal processing enhances the limit-of-detection and sensitivity of the assay by up to 15 and three times, respectively, compared to the previously-used PEC assays with a single binding event, demonstrating a limit-of-detection of 3 fM.