" Log-domain state-space": A systematic transistor-level approach for log-domain filtering

EM Drakakis, AJ Payne… - IEEE Transactions on …, 1999 - ieeexplore.ieee.org
In this paper the properties of a low-level nonlinear continuous-time circuit element-termed a
Bernoulli Cell (or Operator)-are described in a systematic way. This cell is composed of an …

A Biomimetic, 4.5 W, 120+ dB, Log-Domain Cochlea Channel With AGC

AG Katsiamis, EM Drakakis… - IEEE Journal of Solid …, 2009 - ieeexplore.ieee.org
This paper deals with the design and performance evaluation of a new analog CMOS
cochlea channel of increased biorealism. The design implements a recently proposed …

Design of a micropower current-mode log-domain analog cochlear implant

W Germanovix, C Toumazou - … on circuits and systems II: analog …, 2002 - ieeexplore.ieee.org
This paper presents some design concepts and circuits which are the basis of a very low-
power analog cochlear prosthesis in silicon technology, The proposed methods use …

Insights and Advances on the Design of CMOS Sinh Companding Filters

AG Katsiamis, KN Glaros… - IEEE Transactions on …, 2008 - ieeexplore.ieee.org
The scope of this paper is to present certain insights and advances towards the synthesis
and transistor-level implementation of high dynamic range (> 120 dB), micropower, CMOS …

Log-domain filters, translinear circuits and the Bernoulli cell

EM Drakakis, AJ Payne… - 1997 IEEE International …, 1997 - ieeexplore.ieee.org
In this paper a powerful analog circuit building block is identified, composed of a suitably
biased npn bipolar junction transistor (BJT) with a grounded capacitor connected to the …

per Channel Analog Biomimetic Cochlear Implant Processor Filterbank Architecture With Across Channels AGC

G Yang, RF Lyon, EM Drakakis - IEEE transactions on …, 2014 - ieeexplore.ieee.org
A new analog cochlear implant processor filterbank architecture of increased biofidelity,
enhanced across-channel contrast and very low power consumption has been designed …

Modelling the dynamics of log‐domain circuits

A Ascoli, P Curran, O Feely - International journal of circuit …, 2007 - Wiley Online Library
Log‐domain filters are an intriguing form of externally linear, internally nonlinear current‐
mode circuits, in which a compression stage is first used to convert the input currents to the …

High-frequency log-domain current-mode multiphase sinusoidal oscillator

P Prommee, N Sra-ium, K Dejhan - IET circuits, devices & systems, 2010 - IET
This study describes the design of a multiphase sinusoidal oscillator (MSO) based on log-
domain filtering concept. The circuit is a direct realisation of a first-order differential equation …

Design of square-root domain filters

G Yu, C Huang, B Liu, J Chen - Analog Integrated Circuits and Signal …, 2005 - Springer
In this paper, a square-root domain band-pass filter and biquad filter which are based on the
MOSFET square law are proposed. Both of the square-root domain filters operated at 2.5 V …

A Bernoulli cell-based investigation of the non-linear dynamics in log-domain structures

EM Drakakis, AJ Payne - … perspectives on Dynamic Translinear and Log …, 2000 - Springer
This paper presents a low-level treatment of the non-linear dynamics encountered in log-
domain structures, by means of a non-linear circuit element termed a Bernoulli Cell. This cell …