In this paper, a new low-voltage low-power dual-mode universal filter is presented. The proposed circuit is implemented using inverting current buffer (I-CB) and second-generation voltage conveyors (VCIIs) as active building blocks and five resistors and three capacitors as passive elements. The circuit is in single-input multiple-output (SIMO) structure and can produce second-order high-pass (HP), band-pass (BP), low-pass (LP), all-pass (AP), and band-stop (BS) transfer functions. The outputs are available as voltage signals at low impedance Z ports of the VCII. The HP, BP, AP, and BS outputs are also produced in the form of current signals at high impedance X ports of the VCIIs. In addition, the AP and BS outputs are also available in inverting type. The proposed circuit enjoys a dual-mode operation and, based on the application, the input signal can be either current or voltage. It is worth mentioning that the proposed filter does not require any component matching constraint and all sensitivities are low, moreover it can be easily cascadable. The simulation results using 0.18 μm CMOS technology parameters at a supply voltage of ±0.9 V are provided to support the presented theory.

https://www.mdpi.com/2079-9292/8/7/765/pdf

A New Low-Voltage Low-Power Dual-Mode VCII-Based SIMO Universal Filter

This paper introduces two novel circuits of first-order universal filter that comprise single multiple outputs dual-X current conveyor transconductance amplifier and one grounded capacitor only. The first circuit is of current-mode type, and second is of transadmittance-mode type. Both the circuits are suitable to modern IC technology and offer the feature of ease of cascadability. The proposed circuits do not need any passive component matching constraints. Moreover, the pole frequency of both the circuits is electronically tunable. The transadmittance-mode type circuit also provides an interesting feature of electronic and independent tuning of amplitudes of output currents without affecting the pole frequency. To check the applicability of the proposed circuit, a dual-mode multiphase oscillator is also derived from the proposed transadmittance-mode type filter. It provides two quadrature voltage outputs and four quadrature current outputs simultaneously. The oscillation frequency and condition of oscillation are orthogonally and electronically controllable. The non-ideal and parasitic analyses of all the proposed circuits are investigated, and HSPICE simulation results are depicted to confirm the proposed theory. Furthermore, transadmittance-mode type first-order universal filter is experimentally verified using commercially available ICs.

Electronically Tunable First-Order Filters and Dual-Mode Multiphase Oscillator

A new voltage mode quadrature oscillator using grounded capacitors: An application of CDBA

CFOA based a new grounded inductor simulator and its applications

Electronically controlled voltage mode first order multifunction filter using low-voltage low-power bulk-driven OTAs

This study presents findings of a search on canonic single-resistance-controlled oscillators (SRCOs) using third generation current conveyors (CCIIIs). From seven identified canonic SRCOs, five are completely new. All seven canonic SRCOs use two CCIIIs, two grounded capacitors and three resistors. The condition of oscillation and frequency of oscillations are decoupled and simple. The workability of the presented oscillator configurations have been confirmed by PSPICE simulation and hardware experiments.

https://ietresearch.onlinelibrary.wiley.com/doi/pdf/10.1049/iet-cds.2016.0210

On the realisation of canonic single-resistance-controlled oscillators using third generation current conveyors

The manuscript presents a circuit that can act as a universal filter as well as a single resistence controlled oscillator by unpretentiously changing the switch positions. The circuit employs only two active devices and all grounded passive elements. The utilization of only grounded passive components makes this circuit a better choice for integrated circuit implementation. The current mode biquadratic filter offers all the five basic responses along with independent tunability of its quality factor. The dual-mode quadrature sinusoidal oscillator offers explicit current outputs along with voltage outputs. The circuit also offers a simple and uncoupled condition of oscillation and frequency of oscillation. The typical analysis such as non-ideal, sensitivity and parasitic analysis along with the regular simulation results as well as experimental results are exposed here, to strengthen the design idea.

Realization of Current Mode Universal Filter and a Dual-Mode Single Resistance Controlled Quadrature Oscillator Employing VDCC and Only Grounded Passive Elements

The paper introduces a universal filter operating in current mode and a quadrature oscillator operating in current and voltage mode, employing Voltage Differencing Current Conveyor as active device...

Novel current mode universal filter and dual-mode quadrature oscillator using VDCC and all grounded passive elements

This paper proposes a current mode universal filter circuit, employing two active elements along with four grounded passive components only. The derived circuit realizes all five filtering response...

Tajinder Singh Arora

Papers

A new voltage mode quadrature oscillator using grounded capacitors: An application of CDBA

On the realisation of canonic single-resistance-controlled oscillators using third generation current conveyors

Realization of Current Mode Universal Filter and a Dual-Mode Single Resistance Controlled Quadrature Oscillator Employing VDCC and Only Grounded Passive Elements

Novel current mode universal filter and dual-mode quadrature oscillator using VDCC and all grounded passive elements

Fully Integrable/Cascadable CM Universal Filter and CM Quadrature Oscillator Using VDCC and Only Grounded Passive Elements