CM-Biquad Filter Using Single DO-VDBA

Yadav, Chandra Ketu; Prasad, Dinesh; Haseeb, Zainab; Laxya,; Kumar, Mayank

doi:10.4236/cs.2018.99014

Cited by 7 publications

(3 citation statements)

References 6 publications

(4 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Additionally, all properties of the proposed mixed-mode filter are mentioned and compared with the previous related works in Table 1. Furthermore, Table 2 presents a comprehensive comparison illustrating the superiority of the proposed mixed-mode universal filter over the earlier reported relevant VDBA-based biquad configurations [50][51][52][53][54][55][56][57][58]. As can be observed, no earlier VDBA-based filter realization can be operated in all four modes of operation.…”

Section: Introductionmentioning

confidence: 96%

See 1 more Smart Citation

Tunable Mixed-Mode Voltage Differencing Buffered Amplifier-Based Universal Filter with Independently High-Q Factor Controllability

et al. 2021

View full text Add to dashboard Cite

This paper proposes the design of a mixed-mode universal biquad configuration, which realizes generic filter functions in all four possible modes, namely voltage mode (VM), current mode (CM), transadmittance mode (TAM), and transimpedance mode (TIM). The filter architecture employs two voltage differencing buffered amplifiers (VDBAs), two resistors and two capacitors, and can provide lowpass (LP), bandpass (BP), highpass (HP), bandstop (BS), and allpass (AP) biquadratic filtering responses without any circuit alteration. All passive elements used are grounded, except VM. The circuit not only allows for the electronic tuning of the natural angular frequency (ωo), but also achieves orthogonal tunability of the quality factor (Q). It also provides the feature of availability of output voltage at the low-output impedance terminal in VM and TIM, and does not require inverting-type or double-type input signals to realize all the responses. Moreover, in all modes of operation, the high-Q filter can be easily obtained by adjusting a single resistance value. Influences of the VDBA nonidealities and parasitic elements are also discussed in detail. PSPICE simulations with TSMC 0.18-µm CMOS process parameters and experimental testing results with commercially available IC LT1228s have been used to validate the theoretical predictions.

show abstract

Section: Introductionmentioning

confidence: 96%

“…The passive components used for their realizations are all floating. Although the works proposed in [54,56] use a single VDBA as an active element, they suffer from operating in only a single mode and using at least four floating passive components. The paper is organized as follows, Section 2 describes the VDBA.…”

Section: Introductionmentioning

confidence: 99%

Tunable Mixed-Mode Voltage Differencing Buffered Amplifier-Based Universal Filter with Independently High-Q Factor Controllability

et al. 2021

View full text Add to dashboard Cite

show abstract

“…Reported VDBA-based universal biquadratic filters have three major limitations that severely curtail their application spectrum, which are: (a) non-availability of all five filter responses, (b) the employment of floating passive components, and (c) passive component matching constraints. It can be inferred from the comparative study that out of the 30 designs available in the literature; only 15 can provide all five filter responses in either VM and CM mode [23,26,[34][35][36]39,[41][42][43][44][45][46][47][48][49]52]. Most importantly, none of the VDU-based filter structures can operate in mixed-mode configuration.…”

Section: Introductionmentioning

confidence: 99%

Voltage Differencing Buffered Amplifier-Based Novel Truly Mixed-Mode Biquadratic Universal Filter with Versatile Input/Output Features

et al. 2022

View full text Add to dashboard Cite

In this paper, a first-of-a-kind mixed-mode universal filter employing three VDBAs and three passive components, is proposed. The filter operates in all four modes and provides all five filter responses, namely voltage-mode (VM), current-mode (CM), trans-impedance-mode (TIM), or trans-admittance-mode (TAM). Additionally, the same filter topology can also work as a CM single-input-multi-output (SIMO) filter. A state-of-the-art comparison of various ‘voltage differencing’ variants of the voltage differencing buffered amplifier (VDBA)-based SIMO/MISO (single-input-multi-output/multi-input-single-output)-type biquad filters further highlight the significance of the presented research. In the proposed no passive component matching is required for generating the filter responses. The filter circuit also provides inbuilt tunability of the quality factor independent of the pole frequency. The non-ideal frequency dependent gain and component sensitivity analyses of the filter were also performed. The Silterra Malaysia 0.18μm process design kit (PDK) is employed to design and validated the proposed VDBA-based filter using the Cadence design software. The simulation results closely follow the theoretical predictions. To further verify the practical feasibility of the proposed filter, an experimental evaluation is also completed. The VDBA-based filter is implemented using off-the-shelf operational transconductance amplifiers Intersil CA3080, Texas Instruments LF356 op-amp, and Analog Devices AD844s. The filter is designed for a characteristic frequency of 100 kHz. The time and frequency domain measurement results indicate the proper functioning of the filter.

show abstract

Realization of analog signal processing/generation circuits

Prasad¹

2019

CSIT

View full text Add to dashboard Cite

CM-Biquad Filter Using Single DO-VDBA

Cited by 7 publications

References 6 publications

Tunable Mixed-Mode Voltage Differencing Buffered Amplifier-Based Universal Filter with Independently High-Q Factor Controllability

Tunable Mixed-Mode Voltage Differencing Buffered Amplifier-Based Universal Filter with Independently High-Q Factor Controllability

Voltage Differencing Buffered Amplifier-Based Novel Truly Mixed-Mode Biquadratic Universal Filter with Versatile Input/Output Features

Realization of analog signal processing/generation circuits

Contact Info

Product

Resources

About