Browsing by Author "Muhammed, M."

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    Low Power Active-RC Filter for ECG Detection
    (Institute of Electrical and Electronics Engineers Inc., 2019) Muhammed, M.; Rekha, S.
    A low power low frequency active-RC filter for ECG detection is presented. A folded cascode Operational Transcon-ductance Amplifier (OTA) with transistors operating in sub-threshold region at 1.2 V supply voltage is designed in 180 nm CMOS process which consumes a power of 30 nW. A second order low pass filter with a cut-off frequency of 50 Hz is built with the designed OTA. To achieve this low bandwidth, current steering technique is used instead of traditional method of using large resistor and capacitor values and hence the design is area efficient. The filter consumes a power of 80 nW, has a dynamic range of 49 dB and shows a figure of merit (FOM) of 0.4 pJ/pole. © 2019 IEEE.
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    Low power log-domain filter
    (Institute of Electrical and Electronics Engineers Inc., 2019) Pat; , A.; Muhammed, M.; Rao, H.G.; Rekha, S.
    This paper presents a second order low-pass filter employing the log-domain technique for low-voltage, low- power biomedical applications. The filter design is based on the dynamic translinear principle which exploits the non-linear current-voltage relationship of MOS transistors operating in sub- threshold region. The filter, designed in UMC 180 nm CMOS technology, operates with a 0.9 V supply voltage. It consumes a power of 45 nW for a cutoff frequency of 100 Hz. The dynamic range (DR) and figure of merit (FoM) of the filter are 55.6 dB and 61.3 fJ respectively. The DR and FoM of the filter is better than many designs found in the literature. © 2019 IEEE.