The Experts below are selected from a list of 267 Experts worldwide ranked by ideXlab platform
Rui P. Martins - One of the best experts on this subject based on the ideXlab platform.
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a wideband inductorless db linear automatic gain control amplifier using a single branch Negative Exponential generator for wireline applications
IEEE Transactions on Circuits and Systems I-regular Papers, 2018Co-Authors: Lingshan Kong, Chirn Chye Boon, Yong Chen, Pui-in Mak, Rui P. MartinsAbstract:This paper reports a wideband inductorless automatic gain control (AGC) amplifier for wireline applications. To realize a dB-linear AGC range, a pseudo-folded Gilbert cell driven by a single-branch Negative Exponential generator (NEG) is proposed as the core variable-gain amplifier. The NEG features a composite of dual Taylor series to extend the AGC approximation range without sacrificing the precision. Fabricated in 65-nm CMOS, the AGC amplifier occupies a tiny die area of 0.045 mm2 and consumes 28 mW at 1.2 V. Measured over a dB-linear gain range of ~40 dB, < ± 1 dB gain error is achieved and the 3-dB bandwidth stays roughly constant at 7 GHz. For the closed-loop AGC measurement, the input dynamic range is ~40 dB (10 mVpp to 1 Vpp) for a BER <10−12 under a 27 − 1 PRBS data at 10 Gb/s. The achieved figure-of-merit (FOM) of 2.8 pJ/bit compares favorably with state-of-the-art.
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A Wideband Inductorless dB-Linear Automatic Gain Control Amplifier Using a Single-Branch Negative Exponential Generator for Wireline Applications
IEEE Transactions on Circuits and Systems I: Regular Papers, 2018Co-Authors: Lingshan Kong, Chirn Chye Boon, Yong Chen, Pui-in Mak, Rui P. MartinsAbstract:This paper reports a wideband inductorless automatic gain control (AGC) amplifier for wireline applications. To realize a dB-linear AGC range, a pseudo-folded Gilbert cell driven by a single-branch Negative Exponential generator (NEG) is proposed as the core variable-gain amplifier. The NEG features a composite of dual Taylor series to extend the AGC approximation range without sacrificing the precision. Fabricated in 65-nm CMOS, the AGC amplifier occupies a tiny die area of 0.045 mm2 and consumes 28 mW at 1.2 V. Measured over a dB-linear gain range of ~40 dB, < ± 1 dB gain error is achieved and the 3-dB bandwidth stays roughly constant at 7 GHz. For the closed-loop AGC measurement, the input dynamic range is ~40 dB (10 mVpp to 1 Vpp) for a BER
Lingshan Kong - One of the best experts on this subject based on the ideXlab platform.
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A Wideband Variable-Gain Amplifier with a Negative Exponential Generation in 40-nm CMOS Technology
2020 IEEE Radio Frequency Integrated Circuits Symposium (RFIC), 2020Co-Authors: Yangtao Dong, Lingshan Kong, Chirn Chye Boon, Zhe Liu, Kaituo Yang, Ao ZhouAbstract:A wideband variable-gain amplifier (VGA) with a Negative Exponential generation using 40 nm CMOS technology is reported. By compensating a single-branch Negative Exponential generator (NEG) which features a composite of dual Taylor series, the proposed Negative Exponential generation further extends the dB-linear range. The measurement results show the overall VGA achieves a dB-linear range of 51 dB (-34 ~ 17dB) with a gain error less than ± 1 dB. In addition, the bandwidth is around 7 GHz under different gain settings. The core circuit draws 24.6 mA current from a 1.1 V power supply (excluding the output buffer) and occupies an active area of 0.038 mm2.
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a wideband inductorless db linear automatic gain control amplifier using a single branch Negative Exponential generator for wireline applications
IEEE Transactions on Circuits and Systems I-regular Papers, 2018Co-Authors: Lingshan Kong, Chirn Chye Boon, Yong Chen, Pui-in Mak, Rui P. MartinsAbstract:This paper reports a wideband inductorless automatic gain control (AGC) amplifier for wireline applications. To realize a dB-linear AGC range, a pseudo-folded Gilbert cell driven by a single-branch Negative Exponential generator (NEG) is proposed as the core variable-gain amplifier. The NEG features a composite of dual Taylor series to extend the AGC approximation range without sacrificing the precision. Fabricated in 65-nm CMOS, the AGC amplifier occupies a tiny die area of 0.045 mm2 and consumes 28 mW at 1.2 V. Measured over a dB-linear gain range of ~40 dB, < ± 1 dB gain error is achieved and the 3-dB bandwidth stays roughly constant at 7 GHz. For the closed-loop AGC measurement, the input dynamic range is ~40 dB (10 mVpp to 1 Vpp) for a BER <10−12 under a 27 − 1 PRBS data at 10 Gb/s. The achieved figure-of-merit (FOM) of 2.8 pJ/bit compares favorably with state-of-the-art.
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A Wideband Inductorless dB-Linear Automatic Gain Control Amplifier Using a Single-Branch Negative Exponential Generator for Wireline Applications
IEEE Transactions on Circuits and Systems I: Regular Papers, 2018Co-Authors: Lingshan Kong, Chirn Chye Boon, Yong Chen, Pui-in Mak, Rui P. MartinsAbstract:This paper reports a wideband inductorless automatic gain control (AGC) amplifier for wireline applications. To realize a dB-linear AGC range, a pseudo-folded Gilbert cell driven by a single-branch Negative Exponential generator (NEG) is proposed as the core variable-gain amplifier. The NEG features a composite of dual Taylor series to extend the AGC approximation range without sacrificing the precision. Fabricated in 65-nm CMOS, the AGC amplifier occupies a tiny die area of 0.045 mm2 and consumes 28 mW at 1.2 V. Measured over a dB-linear gain range of ~40 dB, < ± 1 dB gain error is achieved and the 3-dB bandwidth stays roughly constant at 7 GHz. For the closed-loop AGC measurement, the input dynamic range is ~40 dB (10 mVpp to 1 Vpp) for a BER
Chirn Chye Boon - One of the best experts on this subject based on the ideXlab platform.
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A Wideband Variable-Gain Amplifier with a Negative Exponential Generation in 40-nm CMOS Technology
2020 IEEE Radio Frequency Integrated Circuits Symposium (RFIC), 2020Co-Authors: Yangtao Dong, Lingshan Kong, Chirn Chye Boon, Zhe Liu, Kaituo Yang, Ao ZhouAbstract:A wideband variable-gain amplifier (VGA) with a Negative Exponential generation using 40 nm CMOS technology is reported. By compensating a single-branch Negative Exponential generator (NEG) which features a composite of dual Taylor series, the proposed Negative Exponential generation further extends the dB-linear range. The measurement results show the overall VGA achieves a dB-linear range of 51 dB (-34 ~ 17dB) with a gain error less than ± 1 dB. In addition, the bandwidth is around 7 GHz under different gain settings. The core circuit draws 24.6 mA current from a 1.1 V power supply (excluding the output buffer) and occupies an active area of 0.038 mm2.
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a wideband inductorless db linear automatic gain control amplifier using a single branch Negative Exponential generator for wireline applications
IEEE Transactions on Circuits and Systems I-regular Papers, 2018Co-Authors: Lingshan Kong, Chirn Chye Boon, Yong Chen, Pui-in Mak, Rui P. MartinsAbstract:This paper reports a wideband inductorless automatic gain control (AGC) amplifier for wireline applications. To realize a dB-linear AGC range, a pseudo-folded Gilbert cell driven by a single-branch Negative Exponential generator (NEG) is proposed as the core variable-gain amplifier. The NEG features a composite of dual Taylor series to extend the AGC approximation range without sacrificing the precision. Fabricated in 65-nm CMOS, the AGC amplifier occupies a tiny die area of 0.045 mm2 and consumes 28 mW at 1.2 V. Measured over a dB-linear gain range of ~40 dB, < ± 1 dB gain error is achieved and the 3-dB bandwidth stays roughly constant at 7 GHz. For the closed-loop AGC measurement, the input dynamic range is ~40 dB (10 mVpp to 1 Vpp) for a BER <10−12 under a 27 − 1 PRBS data at 10 Gb/s. The achieved figure-of-merit (FOM) of 2.8 pJ/bit compares favorably with state-of-the-art.
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A Wideband Inductorless dB-Linear Automatic Gain Control Amplifier Using a Single-Branch Negative Exponential Generator for Wireline Applications
IEEE Transactions on Circuits and Systems I: Regular Papers, 2018Co-Authors: Lingshan Kong, Chirn Chye Boon, Yong Chen, Pui-in Mak, Rui P. MartinsAbstract:This paper reports a wideband inductorless automatic gain control (AGC) amplifier for wireline applications. To realize a dB-linear AGC range, a pseudo-folded Gilbert cell driven by a single-branch Negative Exponential generator (NEG) is proposed as the core variable-gain amplifier. The NEG features a composite of dual Taylor series to extend the AGC approximation range without sacrificing the precision. Fabricated in 65-nm CMOS, the AGC amplifier occupies a tiny die area of 0.045 mm2 and consumes 28 mW at 1.2 V. Measured over a dB-linear gain range of ~40 dB, < ± 1 dB gain error is achieved and the 3-dB bandwidth stays roughly constant at 7 GHz. For the closed-loop AGC measurement, the input dynamic range is ~40 dB (10 mVpp to 1 Vpp) for a BER
Shigeru Katagiri - One of the best experts on this subject based on the ideXlab platform.
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a unified view for discriminative objective functions based on Negative Exponential of difference measure between strings
International Conference on Acoustics Speech and Signal Processing, 2009Co-Authors: Atsushi Nakamura, Erik Mcdermott, Shinji Watanabe, Shigeru KatagiriAbstract:This paper presents a novel unified view of a wide variety of objective functions suitable for discriminative training applied to sequential pattern recognition problems, such as automatic speech recognition. Focusing on a central component of conventional objective functions, the sum of modified joint probabilities of observations and strings, the analysis generalizes these objective functions by weighting each term in the sum by an important function, the Negative Exponential of difference measure between strings. The interesting and valuable results of this investigation are highlighted in a comprehensive relationship chart that covers all of the common approaches (Maximum Mutual Information, Minimum Classification Error, Minimum Phone/Word Error), as well as corresponding novel generalizations and modifications of those approaches.
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ICASSP - A unified view for discriminative objective functions based on Negative Exponential of difference measure between strings
2009 IEEE International Conference on Acoustics Speech and Signal Processing, 2009Co-Authors: Atsushi Nakamura, Erik Mcdermott, Shinji Watanabe, Shigeru KatagiriAbstract:This paper presents a novel unified view of a wide variety of objective functions suitable for discriminative training applied to sequential pattern recognition problems, such as automatic speech recognition. Focusing on a central component of conventional objective functions, the sum of modified joint probabilities of observations and strings, the analysis generalizes these objective functions by weighting each term in the sum by an important function, the Negative Exponential of difference measure between strings. The interesting and valuable results of this investigation are highlighted in a comprehensive relationship chart that covers all of the common approaches (Maximum Mutual Information, Minimum Classification Error, Minimum Phone/Word Error), as well as corresponding novel generalizations and modifications of those approaches.
Pui-in Mak - One of the best experts on this subject based on the ideXlab platform.
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a wideband inductorless db linear automatic gain control amplifier using a single branch Negative Exponential generator for wireline applications
IEEE Transactions on Circuits and Systems I-regular Papers, 2018Co-Authors: Lingshan Kong, Chirn Chye Boon, Yong Chen, Pui-in Mak, Rui P. MartinsAbstract:This paper reports a wideband inductorless automatic gain control (AGC) amplifier for wireline applications. To realize a dB-linear AGC range, a pseudo-folded Gilbert cell driven by a single-branch Negative Exponential generator (NEG) is proposed as the core variable-gain amplifier. The NEG features a composite of dual Taylor series to extend the AGC approximation range without sacrificing the precision. Fabricated in 65-nm CMOS, the AGC amplifier occupies a tiny die area of 0.045 mm2 and consumes 28 mW at 1.2 V. Measured over a dB-linear gain range of ~40 dB, < ± 1 dB gain error is achieved and the 3-dB bandwidth stays roughly constant at 7 GHz. For the closed-loop AGC measurement, the input dynamic range is ~40 dB (10 mVpp to 1 Vpp) for a BER <10−12 under a 27 − 1 PRBS data at 10 Gb/s. The achieved figure-of-merit (FOM) of 2.8 pJ/bit compares favorably with state-of-the-art.
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A Wideband Inductorless dB-Linear Automatic Gain Control Amplifier Using a Single-Branch Negative Exponential Generator for Wireline Applications
IEEE Transactions on Circuits and Systems I: Regular Papers, 2018Co-Authors: Lingshan Kong, Chirn Chye Boon, Yong Chen, Pui-in Mak, Rui P. MartinsAbstract:This paper reports a wideband inductorless automatic gain control (AGC) amplifier for wireline applications. To realize a dB-linear AGC range, a pseudo-folded Gilbert cell driven by a single-branch Negative Exponential generator (NEG) is proposed as the core variable-gain amplifier. The NEG features a composite of dual Taylor series to extend the AGC approximation range without sacrificing the precision. Fabricated in 65-nm CMOS, the AGC amplifier occupies a tiny die area of 0.045 mm2 and consumes 28 mW at 1.2 V. Measured over a dB-linear gain range of ~40 dB, < ± 1 dB gain error is achieved and the 3-dB bandwidth stays roughly constant at 7 GHz. For the closed-loop AGC measurement, the input dynamic range is ~40 dB (10 mVpp to 1 Vpp) for a BER
