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Voltage-Mode Universal Biquad Filter Employing Single Voltage Differencing Differential Input Buffered Amplifier

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Circuits and Systems 2013年第1期4卷 44-48页

作者： Kanhaiya Lal Pushkar Data Ram Bhaskar dinesh prasad Department of Electronics and Communication Engineering Faculty of Engineering and Technology Jamia Millia Islamia New Delhi India Department of Electronics and Communication Engineering Maharaja Agrasen Institute of Technology New Delhi India

A new multi function voltage-mode universal biquadratic filter using single Voltage Differencing Differential Input Buffered Amplifier (VD-DIBA), two capacitors and one resistor is proposed. The proposed configuration has four inputs and one output and can realize all the five standard filters from the same circuit configuration. The presented biquad filter offers low active and passive sensitivities. The validity of proposed universal biquadratic filter has been verified by SPICE simulation using 0.35 μm MIETEC technology.

关键词： Voltage Differencing Differential Input Buffered Amplifier Analog Filter Voltage-Mode

Fully Uncoupled Electronically Controllable Sinusoidal Oscillator Employing VD-DIBAs

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Circuits and Systems 2013年第3期4卷 264-268页

作者： Data Ram Bhaskar dinesh prasad Kanhaiya Lal Pushkar Department of Electronics and Communication Engineering Faculty of Engineering and Technology Jamia Millia Islamia New Delhi India Department of Electronics and Communication Engineering Maharaja Agrasen Institute of Technology Rohini New Delhi India

Recently, voltage differencing-differential input buffered amplifiers (VD-DIBA)-based electronically controllable sinusoidal oscillator has been presented that it does not have the capability of complete independence of frequency of oscillation (FO) and condition of oscillation (CO) as well as electronic control of both CO and FO. In this article, a new fully-uncoupled electronically controllable sinusoidal oscillator using two VD-DIBAs, two grounded capacitors and two resistors has been proposed which offers important advantages such as 1) totally uncoupled and electronically controlled condition of oscillation (CO) and frequency of oscillation (FO);2) low active and passive sensitivities;and 3) a very good frequency stability factor. The effects of non-idealities of the VD-DIBAs on the proposed oscillator are also investigated. The validity of the proposed formulation has been confirmed by SPICE simulation with TSMC 0.18 μm process parameters.

关键词： Sinusoidal Oscillator Voltage-Mode VD-DIBA

Digitally Programmable Voltage Mode Universal Filters—A Minimal Realization

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Circuits and Systems 2015年第10期6卷 213-223页

作者： Devesh Singh Neelofer Afzal dinesh prasad Richa Srivastava Kuldeep Panwar Department of Electronics Jamia Millia Islamia University New Delhi India Department of Electronics and Communication NSIT New Delhi India Department of Electronics and Communication HMRITM New Delhi India

Three voltage mode universal filter biquads using digitally programmable second generation current conveyor (CCII) are presented in this paper. Salient features of proposed filter configurations include realization of all the filter functions except allpass, independently programmable filter parameters, no component matching constraint and low sensitivity figure. Component count of proposed filter configurations is proved to be minimal for offering aforementioned set of features. Workability of proposed circuit is verified by including the SPICE simulations.

关键词： voltage mode digitally programmable current conveyor. Universal filter

CM-Biquad Filter Using Single DO-VDBA

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Circuits and Systems 2018年第9期9卷 133-139页

作者： Chandra Ketu Yadav dinesh prasad Zainab Haseeb Laxya Mayank Kumar Department of Electronics and Communication Engineering Faculty of Engineering and Technology Jamia Millia Islamia New Delhi India

In this manuscript we present a current mode biquad using one dual output-voltage differencing buffered amplifier (DO-VDBA) and four passive components (2 grounded capacitors and 2 resistors). The proposed circuit offers very low active and passive sensitivity. The filter presented here is electronically tunable, frequency of oscillation (FO) can be tuned by controlling transconductance (gm) by varying the bias current (IB) of the circuit. The workability of proposed circuit is tested using PSPICE with 180 nm TSMC CMOS process parameters.

关键词： Current Mode Biquad Filter Dual Output-Voltage Differencing Buffered Amplifier

Single VDVTA-Based Voltage-Mode Biquad Filter

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Circuits and Systems 2015年第3期6卷 55-59页

作者： Ghanshyam Singh dinesh prasad D. R. Bhaskar Department of Electronics and Communication Engineering HMRITM Hamidpur Delhi India Department of Electronics and Communication Engineering Faculty of Engineering and Technology Jamia Millia Islamia New Delhi India

In this paper, an application of voltage differencing voltage transconductance amplifier (VDVTA) in the realization of voltage-mode (VM) multi-input single output (MISO) type biquad is presented. The proposed topology uses one VDVTA as an active element, two capacitors and a grounded resistor. The configuration realizes low pass (LP), high pass (HP), band pass (BP) and notch (BR) filters without the requirement of any matching condition. The natural frequency (w0) and bandwidth (BW) are independently controllable. The proposed circuit offers low active and passive sensitivities of w0. The operation of the proposed circuit has been verified through SPICE simulation with TSMC CMOS 0.18 μm process parameters.

关键词： Voltage Differencing Voltage Transconductance Amplifier Analog Filter LP HP BP BR Voltage Mode

Performance Analysis of ASK and PSK Modulation Based FSO System Using Coupler-Based Delay Line Filter under Various Weather Conditions

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Optics and Photonics Journal 2018年第8期8卷 277-287页

作者： Mohd Ashraf Gaurav Baranwal dinesh prasad Saima Idris Mirza Tariq Beg Department of Electronics and Communication F/O Engineering and Technology Jamia Millia Islamia Delhi India

Free space optical communication (FSO) proves to be very effective and efficient technology for wireless communication. This work basically deals with the designing of FSO systems. Further, a comparative study has been made to ascertain which modulation technique proves better for communication. This paper investigates the performance of ASK and PSK modulation based FSO system by varying different FSO parameters under several conditions including haze, rain, mist and fog. Finally, simulation results are analysed and discussed.

关键词： FSO Bit Error Rate (BER) Amplitude Shift Keying (ASK) Phase Shift Keying (PSK) Attenuation

Evaluation of Dielectric Properties of CCTO-BT/Epoxy Composites for Electronic Applications

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Journal of Harbin Institute of Technology(New Series) 2024年第1期31卷 69-77页

作者： Swagatika Mishra Punyapriya Mishra Punyatoya Mishra dinesh Kumar Mishra Krushna prasad Shadangi Deepak Kumar Mohapatra Department of Mechanical Engineering Veer Surendra Sai University of TechnologyBurlaOdisha 768018India Department of Physics Parala Maharaja Engineering CollegeBerhampurOdisha 761003India Department of Metallurgical and Materials Engineering Veer Surendra Sai University of TechnologyBurlaOdisha768018India Department of Chemical Engineering Veer Surendra Sai University of TechnologyBurlaOdisha 768018India

In the current study,the calcium copper titanate(CCTO)/epoxy,barium titanate(BT)/epoxy and CCTO-BT/epoxy composite samples with variable volume fractions of CCTO and BT are fabricated using hand lay-up and compression moulding process. The composite samples are characterized for the frequency dependence on dielectric properties,conductivity,impedance spectroscopy and electrical modulus.X-ray diffraction(XRD)representation of CCTO-BT/epoxy composite samples confirmed the presence of both CCTO and BT ceramic samples separately. The dielectric characteristics of hybrid CCTO-BT/epoxy composite samples with CCTO∶BT ratio of 40∶60, 60∶40,and 50∶50 was found relatively better than those of single ceramic filler reinforced epoxy composites. AC conductivity analysis shows improvement in the results of hybrid filler-filled CCTO-BT/epoxy composites in comparison with single filler-filled epoxy composite.50∶50 CCTO-BT/epoxy composite shows the best AC conductivity value of~ 2.2 ×10^(-5) ohm^(-1)·m^(-1) at a higher frequency of 1MHz. The impedance analysis confirms the higher insulating properties for hybrid 40∶60 and 60∶40 CCTO-BT/epoxy composites with respect to the single and other hybrid ceramic epoxy composites. The analysis suggests the hybrid CCTO-BT/epoxy composites to be adopted as a potential dielectric material for energy storage devices and other electronic applications.

关键词： ceramic filler dielectric characterization hybrid Composite AC conductivity impedance analysis

Assessment of scale interactions associated with wake meandering using bispectral analysis methodologies

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Theoretical & Applied Mechanics Letters 2024年第2期14卷 65-75页

作者： dinesh Kumar Kinjangi Daniel Foti Department of Mechanical Engineering University of MemphisMemphisTennesseeUSA

Large atmospheric boundary layer fluctuations and smaller turbine-scale vorticity dynamics are separately hypothesized to initiate the wind turbine wake meandering phenomenon,a coherent,dynamic,turbine-scale oscillation of the far *** interactions,the mechanism of energy transfers between scales,manifest as triples of wavenumbers or frequencies and can be characterized through bispectral *** bispectrum,which correlates the two frequencies to their sum,is calculated by two recently developed multi-dimensional modal decomposition methods:scale-specific energy transfer method and bispectral mode ***-eddy simulation of a utility-scale wind turbine in an atmospheric boundary layer with a broad range of large length-scales is used to acquire instantaneous velocity *** bispectrum from both methods identifies prominent upwind and wake meandering interactions that create a broad range of energy scales including the wake meandering *** coherent kinetic energy associated with the interactions shows strong correlation between upwind scales and wake meandering.

关键词： Wind turbine wake Mode decomposition Bispectral analysis

CDDITA-Based Voltage-Mode First Order All Pass Filter Configuration

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Circuits and Systems 2015年第11期6卷 252-256页

作者： dinesh prasad Kuldeep Panwar D. R. Bhaskar Mayank Srivastava Department of Electronics and Communication Engineering Faculty of Engineering and Technology Jamia Millia Islamia New Delhi India Department of Electronics and Communication HMRITM Delhi India Department of Electronics and Communication Engineering Amity University Uttar Pradesh Noida India

This realization of a voltage-mode first order voltage-mode all pass filter (VM-APF) employing single current differencing differential input transconductance amplifier (CDDITA) as active component is presented. The proposed configuration employs one CDDITA along with two resistors and one grounded capacitor. The pole frequency and phase shift of proposed VM-APF are electronically tunable by transconductance of CDDITA. The proposed circuit is verified by SPICE simulations.

关键词： CDDITA All Pass Filter First Order