Sudhanshu Maheshwari

Electronic Engineering

Ph. D.
24.67

Publications

  • Source
    Bhartendu Chaturvedi · Sudhanshu Maheshwari
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    ABSTRACT: The paper presents new single active element based second order band pass filters. The new circuits use single dual-X current conveyor with buffered output and five passive components. The proposed circuits enjoy the features of high input impedance and low output impedance, which are desirable features for voltage-mode circuits. Circuit operation at high frequencies are verified along with non-ideality and parasitic study. The Monte Carlo analysis is also done which justify good sensitivity performances of the proposed circuits. Routh-Hurwitz’s stability test is performed to verify the stability of the proposed circuits. For showing the integration aspect, resistorless band-pass filters are also realized. The proposed low-Q filters are useful for cascading. The feature of cascadability is further utilized by showing an application of fourth-order band-pass filter. The performances of the proposed circuits are depicted through Personal Simulation Program with Integrated Circuit Emphasis (PSPICE) simulations, which show good agreement to theoretical applications. The new circuits are expected to enhance the already existing knowledge on the subject.
    Journal of Circuits System and Computers 06/2015; 24(05):1550075. DOI:10.1142/S0218126615500759 · 0.33 Impact Factor
  • Sudhanshu Maheshwari · Deepak Agrawal
    Journal of Circuits System and Computers 01/2015; 24(6):12. DOI:10.1142/S0218126615500802. · 0.33 Impact Factor
  • Parveen Beg · Sudhanshu Maheshwari
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    ABSTRACT: This paper introduces a new active element combining the useful features of differential voltage, dual-X and first generation current conveyors. The new proposed active element is further utilized to introduce a new generalized filter topology employing grounded components only. The proposed single active element-based topology benefits from first-order and second-order filter realization by appropriate impedance specialization. The circuit topology with single current input provides two output currents and voltages in each case. A thorough study of proposed active element along with extensive simulations is carried out to validate the filter topology. A detailed non-ideal study is also given. To further support the usefulness of filter topology, higher-order filters are also realized. The new active element and the new filter structure provide advancement to the existing knowledge; with the scope of active element being further exploited for analog signal processing applications in general. The proposed differential voltage dual-X first generation current conveyor (DV-DXCCI) and its filtering applications are simulated using TSMC 0.25 m technology.
    Circuits Systems and Signal Processing 11/2014; 33(11):3603-3619. DOI:10.1007/s00034-014-9807-4 · 1.26 Impact Factor
  • Jitendra Mohan · Sudhanshu Maheshwari
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    ABSTRACT: To extend the existing knowledge on first-order voltage-mode all-pass filters, this paper presents two novel first-order voltage-mode all-pass sections, each employing single fully differential second-generation current conveyor (FDCCII) being used as the newly obtained fully differential voltage conveyor (FDVC), a resistor and a grounded capacitor. Both the proposed circuits possess high-input and low-output impedance feature, which makes the proposed circuits ideal for voltage-mode systems. Non-ideal study along with simulation results is given for validation.
    Journal of Circuits System and Computers 05/2014; 23(06). DOI:10.1142/S0218126614500777 · 0.33 Impact Factor
  • Sudhanshu Maheshwari
  • J. Mohan · B. Chaturvedi · S. Maheshwari
  • Sudhanshu Maheshwari
  • Sudhanshu Maheshwari
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    ABSTRACT: This paper presents a new circuit proposal for multiphase sine-wave generation, employing two active elements and four grounded passive elements. The proposed oscillator provides four 45° phase-shifted voltage outputs. Incorporation of additional inverters for generation of eight-phase outputs is further shown. Simultaneous current outputs can also be generated with additional output stages. The compact circuit structure is studied for nonideal and parasitic effects and simulation results are given, which are in good agreement with the theory. The utility of the proposal for π/4-QPSK generation is explored as an interesting application example with supporting results.
    Active and Passive Electronic Components 01/2014; 2014:1-7. DOI:10.1155/2014/480590
  • Source
    Jitendra Mohan · Bhartendu Chaturvedi · Sudhanshu Maheshwari
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    ABSTRACT: The paper presents a new voltage-mode multifunction filter. The proposed filter employs single modified fully differential second generation current conveyor (FDCCII), two grounded capacitors, and three resistors. The proposed circuit enjoys the employment of two grounded capacitors (attractive for absorbing shunt parasitic capacitance and ideal for IC implementation). The proposed circuit provides all five generic filter responses (low pass (LP), high pass (HP), band pass (BP), notch (NH), and all pass (AP) filter responses) simultaneously with single input. The novel proposed filter has low active and passive sensitivities. A number of time domain and frequency domain simulation results depicted through PSPICE using 0.18 µm TSMC process parameters are included to validate the theory. The proposed circuit is expected to enhance the existing knowledge on the subject.
    01/2014; 2014:1-7. DOI:10.1155/2014/514019
  • Source
    Sudhanshu Maheshwari
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    ABSTRACT: This study relates to the review of an important analog electronic function in form of all-pass filter's realization using assorted current conveyor types and their relative performances, which resulted in a novel solution based on a new proposed active element. The study encompasses notable proposals during last the decade or more, and provides a platform for a broader future survey on the topic for enhancing the knowledge penetration amongst the researchers in the specified field. A new active element named EXCCII (Extra-X second generation current conveyor) with buffered output is found in the study along with its use in a new first-order all-pass section, with possible realization using commercially available IC (AD-844) and results.
    The Scientific World Journal 11/2013; 2013:429391. DOI:10.1155/2013/429391 · 1.73 Impact Factor
  • S. V. Singh · Sudhanshu Maheshwari · R. S. Tomar · D. S. Chauhan
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    ABSTRACT: In this paper a new single current controlled current conveyor trans-conductance amplifier (CCCCTA) based electronically tunable voltage-mode biquad filter is proposed. The proposed voltage-mode filter employs only one resistor and three capacitors as passive elements. It can simultaneously realize low pass (LP), band pass (BP), band reject (BR) and high pass (HP) filtering functions using single voltage input signal. The circuit possesses low active and passive sensitivity. Moreover, both ω0 and Q can be electronically controlled by the bias currents of the CCCCTA. PSPICE simulation results are included for verification of proposed circuit.
    2013 International Conference on Multimedia, Signal Processing and Communication Technologies (IMPACT); 11/2013
  • Jitendra Mohan · Bhartendu Chaturvedi · Sudhanshu Maheshwari
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    ABSTRACT: This paper shows further extension to the existing knowledge on voltage mode quadrature oscillators. In this paper, four new voltage mode quadrature oscillators using plus-type differential difference current conveyors as active device are realized by using a simple technique. Each circuit enjoys several attractive features such as use of grounded passive components, outputs of equal magnitude and low active and passive sensitivities. The use of all grounded passive components makes all the proposed circuits suitable for monolithic implementation. PSPICE simulation using TSMC 0.25μm CMOS parameters are given to validate the proposed circuits.
    2013 International Conference on Multimedia, Signal Processing and Communication Technologies (IMPACT); 11/2013
  • Source
    Bhartendu Chaturvedi · Sudhanshu Maheshwari
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    ABSTRACT: The paper presents a new quadrature oscillator of third order which can provide four quadrature current outputs and two quadrature voltage outputs. The new circuit employs three differential voltage current conveyors and six passive components, most of which are in grounded form. Circuit operation at high frequencies is verified along with nonideality and parasitic study. The circuit enhancement for generation of four phase clock waveforms is also given. The proposed circuit is a novel addition to the oscillator family.
    10/2013; 2013. DOI:10.1155/2013/385062
  • Jitendra Mohan · Bhartendu Chaturvedi · Sudhanshu Maheshwari
    10/2013; 5(12):32-37. DOI:10.5815/ijigsp.2013.12.05
  • Sudhanshu Maheshwari · Bhartendu Chaturvedi
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    ABSTRACT: This paper presents some additional high input low output impedance analog networks realized using a recently introduced single Dual-X Current Conveyor with buffered output. The new circuits encompass several all-pass sections of first- and second-order. The voltage-mode proposals benefit from high input impedance and low output impedance. Nonideality and sensitivity analysis is also performed. The circuit performances are depicted through PSPICE simulations, which show good agreement with theory.
    Active and Passive Electronic Components 09/2013; 2013. DOI:10.1155/2013/574925
  • Parveen Beg · Sudhanshu Maheshwari · M.A. Siddiqi
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    ABSTRACT: This study introduces a digitally controlled biquadratic filter operating in fully differential mode and realising voltage and transadmittance functions simultaneously. The proposed circuit is based on the active element namely, digitally current controlled differential voltage current conveyor and three passive components. The proposed circuit offers wide range and non-interactive digital control over filter parameters and also exhibits wide dynamic range. The fully differential nature is well justified by the high common mode rejection ratio of the proposed circuit. Non-ideal and parasitic analyses are performed and extensive simulations carried out to verify the proposed circuit.
    IET Circuits, Devices and Systems 07/2013; 7(4). DOI:10.1049/iet-cds.2012.0244 · 0.91 Impact Factor
  • Source
    Jitendra Mohan · Sudhanshu Maheshwari
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    ABSTRACT: A novel current-mode first-order all-pass filter with low input and high output impedance feature is presented. The circuit realization employs a single dual-X-second-generation current conveyor, one grounded capacitor, and one grounded resistor, which is a minimum component realization. The theoretical results are verified using PSPICE simulation program with TSMC 0.35 μ m CMOS process parameters.
    The Scientific World Journal 06/2013; 2013:859784. DOI:10.1155/2013/859784 · 1.73 Impact Factor
  • Sudhanshu Maheshwari
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    ABSTRACT: This paper introduces a new voltage-mode second-order sinusoidal generator circuit with four active elements and six passive elements, including grounded capacitors. The frequency and condition of oscillation can be independently controlled. The effect of active element’s nonidealities and parasitic effects is also studied; the proposed topology is good in absorbing several parasitic elements involved with the active elements. The circuit is advantageous for generating high frequency signals which is demonstrated for 25 MHz outputs. Several circuit extensions are also given which makes the new proposal useful for real circuit adoption. The proposed theory is validated through simulation results.
    Active and Passive Electronic Components 05/2013; 2013. DOI:10.1155/2013/685939
  • Source
    Sudhanshu Maheshwari · Jitendra Mohan · Durg Singh Chauhan
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    ABSTRACT: This paper presents two new first-order voltage-mode (VM) cascadable all-pass (AP) sections, employing two differential voltage current conveyors (DVCCs) and three grounded passive components. Both circuits possess high input and low output impedance, which makes them easily cascadable. Non-ideality aspects and parasitic effects are also studied. As an application, a quadrature oscillator is designed using the proposed circuit. The proposed circuits are verified through PSPICE simulations using 0.5 μm CMOS parameters.
    Journal of Circuits System and Computers 02/2013; 22(01). DOI:10.1142/S021812661250065X · 0.33 Impact Factor
  • Sudhanshu Maheshwari
    IMPACT 2013; 01/2013

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