Current mode high-frequency KHN filter employing differential class AB log domain integrator

Tola, Abdullah T.; Arslanalp, Remzi; Yilmaz, Saziye Surav

doi:10.1016/j.aeue.2008.04.015

Cited by 12 publications

(6 citation statements)

References 21 publications

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“…According to the state space synthesis method, state space equations can be obtained from the transfer function by using several methods . In this study, a modified companion method was chosen for obtaining the state space representation of the system.…”

Section: Generalized Class Ab Synthesis Of Square‐root Domain Circuitsmentioning

confidence: 99%

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A systematic class AB state space synthesis method based on MOSFET square law and translinear square‐root cells

Yilmaz

Tola

2015

Circuit Theory & Apps

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Summary A new state space Class AB synthesis method for the design of square‐root domain filter based on the MOSFET square law is proposed in this study. Those circuits designed by the proposed Class AB systematic synthesis method have the advantages of Class AB circuit structure and translinear circuits. Two alternative design procedures were suggested for designing new circuits. Proposed synthesis technique is applied for designing of a first order all‐pass filter and a third order low‐pass filter. Circuits are simulated in PSpice using 0.35 µm CMOS technology parameters. Time domain and frequency domain analysis of the proposed filters are performed, and simulation results of those are also presented. The simulation results show that the proposed synthesis technique is appropriate for the design of different types of filters and has the advantages of Class AB circuit structure. Copyright © 2015 John Wiley & Sons, Ltd.

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Section: Generalized Class Ab Synthesis Of Square‐root Domain Circuitsmentioning

confidence: 99%

“…The general theory of translinear Class AB filters was proposed firstly for log domain filtering [20] in 1999, and these circuits have more advantages [19][20][21][22]. Therefore, many Class AB log domain filters have been designed so far [21,[23][24][25]. Additionally, there exist many Class AB CMOS-log filters in the literature [26,27].…”

mentioning

confidence: 99%

A systematic class AB state space synthesis method based on MOSFET square law and translinear square‐root cells

Yilmaz

Tola

2015

Circuit Theory & Apps

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“…Two lossless integrators with feedback loops and a summer block establishes the classical KHN circuit that can function as three fundamental filters; low pass, high pass and band pass filters. There are many KHN biquad filters have been proposed in the literature synthesized by both voltage mode and current mode synthesis methods [3]- [12].…”

Section: Introductionmentioning

confidence: 99%

Log-domain Universal Biquad Filter Design Using Lossy Integrators

Duduk¹,

Tola²

2016

ElAEE

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In this paper, a new current mode low voltage log domain Class A universal biquad filter is proposed. The proposed circuit is derived from the block diagram based on Kerwin-Huelsman-Newcomb (KHN) circuit using lossy integrators. The circuit can provide second-order low pass, band pass and high pass filter characteristics. State space method and translinear principle is used for circuit synthesis. The natural frequency f0 and quality factor Q of the circuit is electronically tunable by varying amplitudes of the current sources. PSpice simulation results are given in order to verify the theoretical analysis. The simulations are performed with both ideal transistor models and AT&T CBIC-R type real transistor models.

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“…Log-domain biquad topologies that realize a single filter function, denoted as single input single output (SISO) biquads, have been already reported in [4][5][6][7][8][9][10][11][12][13][14][15][16][17]. The biquads in [18][19][20][21][22][23][24] are single input multiple output (SIMO) topologies, but only the topologies in [23,24] could be considered as universal due to the fact that they simultaneously offer the five standard filter functions. The employment of differentiators for realizing the topology in [23], limits its performance in terms of maximum frequency of operation, noise, and linearity.…”

Section: Introductionmentioning

confidence: 99%

“…The core of the topology in [24], constructed from lossless integrators, is based on a follow the leader feedback (FLF) configuration. The addition of summing blocks at the LP, HP, and BP outputs provides the capability for realizing also the BS and AP filter functions.…”

Section: Introductionmentioning

confidence: 99%

Log-domain SIMO and MISO low-voltage universal biquads

Psychalinos

2010

Analog Integr Circ Sig Process

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A family of single input multiple output (SIMO) and multiple input single output (MISO) biquads introduced in this paper. Attractive features offered by the novel topologies are the realization of the five standard filter functions, the capability of electronic tuning of both the resonance frequency and Q factor without disturbing each other, their wide range of frequency tuning, and their potential for low-voltage operation. The performance of the proposed topologies has been evaluated through simulation results, using the Analog Design Environment of Cadence software.

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Current mode high-frequency KHN filter employing differential class AB log domain integrator

Cited by 12 publications

References 21 publications

A systematic class AB state space synthesis method based on MOSFET square law and translinear square‐root cells

A systematic class AB state space synthesis method based on MOSFET square law and translinear square‐root cells

Log-domain Universal Biquad Filter Design Using Lossy Integrators

Log-domain SIMO and MISO low-voltage universal biquads

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