The Experts below are selected from a list of 282 Experts worldwide ranked by ideXlab platform
R. Milano - One of the best experts on this subject based on the ideXlab platform.
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a wideband inp dhbt true Logarithmic Amplifier
IEEE Transactions on Microwave Theory and Techniques, 2006Co-Authors: Yu-ju Chuang, Kurt Cimino, Mark Stuenkel, Milton Feng, R. MilanoAbstract:A wideband Logarithmic Amplifier is demonstrated in this paper using InP-InGaAs double heterojunction bipolar transistor technology. The Amplifier uses cascaded gain stages including the limiting and unity Amplifiers to achieve a piecewise approximation to the ideal Logarithmic response. The performance of 43-dB dynamic range, 22-GHz bandwidth, and
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A Wideband InP DHBT True Logarithmic Amplifier
IEEE Transactions on Microwave Theory and Techniques, 2006Co-Authors: Yu-ju Chuang, Kurt Cimino, Mark Stuenkel, Milton Feng, R. MilanoAbstract:A wideband Logarithmic Amplifier is demonstrated in this paper using InP-InGaAs double heterojunction bipolar transistor technology. The Amplifier uses cascaded gain stages including the limiting and unity Amplifiers to achieve a piecewise approximation to the ideal Logarithmic response. The performance of 43-dB dynamic range, 22-GHz bandwidth, and
R. Michels - One of the best experts on this subject based on the ideXlab platform.
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A monolithic GaAs low power L-band successive detection Logarithmic Amplifier
IEEE Journal of Solid-State Circuits, 1994Co-Authors: N. Scheinberg, R. MichelsAbstract:This paper describes a temperature compensated L-band GaAs MMIC successive detection Logarithmic Amplifier featuring low power consumption. The Amplifier achieved log-linearity of /spl plusmn/2.5 dB and a dynamic range of 60 dB over a 100/spl deg/C temperature range. This device shows no sacrifice of performance over larger, labor intensive hybrid MIC approaches. >
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An L-band temperature compensated ultra low power successive detection Logarithmic Amplifier
IEEE MTT-S International Microwave Symposium Digest, 1Co-Authors: R. Michels, N. Scheinberg, J. GluckAbstract:The authors describe a temperature-compensated L-band GaAs MMIC (monolithic microwave integrated circuit) successive detection Logarithmic Amplifier featuring ultra-low power consumption (700 mW). Log-linearity of +or-2.5 dB and a dynamic range of 60 dB were achieved over a 100 degrees C temperature range. The frequency range of the Amplifier extends from 500 MHz to 1.2 GHz. This device shows no sacrifice of performance over larger, labor-intensive hybrid MIC approaches. >
Yu-ju Chuang - One of the best experts on this subject based on the ideXlab platform.
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a wideband inp dhbt true Logarithmic Amplifier
IEEE Transactions on Microwave Theory and Techniques, 2006Co-Authors: Yu-ju Chuang, Kurt Cimino, Mark Stuenkel, Milton Feng, R. MilanoAbstract:A wideband Logarithmic Amplifier is demonstrated in this paper using InP-InGaAs double heterojunction bipolar transistor technology. The Amplifier uses cascaded gain stages including the limiting and unity Amplifiers to achieve a piecewise approximation to the ideal Logarithmic response. The performance of 43-dB dynamic range, 22-GHz bandwidth, and
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A Wideband InP DHBT True Logarithmic Amplifier
IEEE Transactions on Microwave Theory and Techniques, 2006Co-Authors: Yu-ju Chuang, Kurt Cimino, Mark Stuenkel, Milton Feng, R. MilanoAbstract:A wideband Logarithmic Amplifier is demonstrated in this paper using InP-InGaAs double heterojunction bipolar transistor technology. The Amplifier uses cascaded gain stages including the limiting and unity Amplifiers to achieve a piecewise approximation to the ideal Logarithmic response. The performance of 43-dB dynamic range, 22-GHz bandwidth, and
Shantanu Chakrabartty - One of the best experts on this subject based on the ideXlab platform.
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a 120db input dynamic range current input current output cmos Logarithmic Amplifier with 230ppm k temperature sensitivity
International Midwest Symposium on Circuits and Systems, 2013Co-Authors: Shantanu ChakrabarttyAbstract:This paper presents the design of a current-mode CMOS Logarithmic Amplifier, which by design is insensitive to ambient temperature variations. Its operational current ranges over 100fA - 100nA, which covers the full range of sub-threshold region. Unlike conventional Logarithmic Amplifiers, the proposed approach directly produces a current signal as a Logarithmic function of the input current. The core of the proposed circuit is translinear ohm's law principle, which is implemented by a floating-voltage source and a pseudo-linear resistive element within a translinear loop. The temperature sensitive parameters are reduced using a translinear-based resistive cancelation technique. Measured results from prototypes fabricated in a 0.5 μm CMOS process show that the Amplifier exhibits an input dynamic range of 120dB and a temperature sensitivity of 230 ppm/°K.
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Design of a Programmable Gain, Temperature Compensated Current-Input Current-Output CMOS Logarithmic Amplifier
IEEE transactions on biomedical circuits and systems, 2013Co-Authors: Shantanu ChakrabarttyAbstract:This paper presents the design of a programmable gain, temperature compensated, current-mode CMOS Logarithmic Amplifier that can be used for biomedical signal processing. Unlike conventional Logarithmic Amplifiers that use a transimpedance technique to generate a voltage signal as a Logarithmic function of the input current, the proposed approach directly produces a current output as a Logarithmic function of the input current. Also, unlike a conventional transimpedance Amplifier the gain of the proposed Logarithmic Amplifier can be programmed using floating-gate trimming circuits. The synthesis of the proposed circuit is based on the Hart's extended translinear principle which involves embedding a floating-voltage source and a linear resistive element within a translinear loop. Temperature compensation is then achieved using a translinear-based resistive cancelation technique. Measured results from prototypes fabricated in a 0.5 $\,\mu$ m CMOS process show that the Amplifier has an input dynamic range of 120 dB and a temperature sensitivity of 230 ppm/ $^{\circ}$ C (27 $^{\circ}$ C– $57^{\circ}$ C), while consuming less than 100 nW of power.
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MWSCAS - A 120dB input dynamic range, current-input current-output CMOS Logarithmic Amplifier with 230ppm/°K temperature sensitivity
2013 IEEE 56th International Midwest Symposium on Circuits and Systems (MWSCAS), 2013Co-Authors: Shantanu ChakrabarttyAbstract:This paper presents the design of a current-mode CMOS Logarithmic Amplifier, which by design is insensitive to ambient temperature variations. Its operational current ranges over 100fA - 100nA, which covers the full range of sub-threshold region. Unlike conventional Logarithmic Amplifiers, the proposed approach directly produces a current signal as a Logarithmic function of the input current. The core of the proposed circuit is translinear ohm's law principle, which is implemented by a floating-voltage source and a pseudo-linear resistive element within a translinear loop. The temperature sensitive parameters are reduced using a translinear-based resistive cancelation technique. Measured results from prototypes fabricated in a 0.5 μm CMOS process show that the Amplifier exhibits an input dynamic range of 120dB and a temperature sensitivity of 230 ppm/°K.
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Current-input current-output CMOS Logarithmic Amplifier based on translinear Ohm's law
Electronics Letters, 2011Co-Authors: Chao Huang, Shantanu ChakrabarttyAbstract:State-of-the-art Logarithmic Amplifiers use a transimpedance technique based on the exponential dependence between input current and output voltage as exhibited by p-n junction diodes, bipolar transistors and MOS transistors in the subthreshold region. Presented is a CMOS current-input current-output Logarithmic Amplifier based on a translinear Ohm's law principle which involves a floating voltage source and a passive resistor embedded within a translinear loop. It is demonstrated that the input–output range of the proposed Logarithmic Amplifier can be controlled using a reference bias and the response of the Amplifier can be temperature compensated using a PTAT and a resistive cancellation technique.
N. Scheinberg - One of the best experts on this subject based on the ideXlab platform.
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A monolithic GaAs low power L-band successive detection Logarithmic Amplifier
IEEE Journal of Solid-State Circuits, 1994Co-Authors: N. Scheinberg, R. MichelsAbstract:This paper describes a temperature compensated L-band GaAs MMIC successive detection Logarithmic Amplifier featuring low power consumption. The Amplifier achieved log-linearity of /spl plusmn/2.5 dB and a dynamic range of 60 dB over a 100/spl deg/C temperature range. This device shows no sacrifice of performance over larger, labor intensive hybrid MIC approaches. >
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An L-band temperature compensated ultra low power successive detection Logarithmic Amplifier
IEEE MTT-S International Microwave Symposium Digest, 1Co-Authors: R. Michels, N. Scheinberg, J. GluckAbstract:The authors describe a temperature-compensated L-band GaAs MMIC (monolithic microwave integrated circuit) successive detection Logarithmic Amplifier featuring ultra-low power consumption (700 mW). Log-linearity of +or-2.5 dB and a dynamic range of 60 dB were achieved over a 100 degrees C temperature range. The frequency range of the Amplifier extends from 500 MHz to 1.2 GHz. This device shows no sacrifice of performance over larger, labor-intensive hybrid MIC approaches. >
