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Subthreshold FIR Filter Architecture for Ultra Low Power Applications [chapter]

Biswajit Mishra, Bashir M. Al-Hashimi
2009 Lecture Notes in Computer Science  
Subthreshold design has been proposed as an effective technique for designing signal processing circuits needed in wireless sensor nodes powered by sources with limited energy.  ...  In this paper we propose a subthreshold FIR architecture which brings the benefits of reduced leakage energy, reduced minimum energy point, reduced operating voltage and increased operating frequency when  ...  We envisage a potential application for the proposed FIR filter architecture is to be part of DSP architectures aimed at wireless sensor nodes powered by limited energy sources.  ... 
doi:10.1007/978-3-540-95948-9_1 fatcat:etofzcjccrhlja527e72to6rea

Ultra-low-power DLMS adaptive filter for hearing aid applications

C.H.-I. Kim, H. Soeleman, K. Roy
2003 IEEE Transactions on Very Large Scale Integration (vlsi) Systems  
We present an ultra-low-power, delayed least mean square (DLMS) adaptive filter operating in the subthreshold region for hearing aid applications.  ...  Index Terms-Adaptive filter, parallel architecture, subpseudo nMOS, subthreshold CMOS (sub-CMOS), subthreshold operation.  ...  In this paper, we demonstrate an ultra-low-power adaptive filter for hearing aid applications, operating in the subthreshold region.  ... 
doi:10.1109/tvlsi.2003.819573 fatcat:tzde54ybkbblxlshni5hlit6f4

Minimum-Energy Operation Via Error Resiliency

Rami A. Abdallah, Naresh R. Shanbhag
2010 IEEE Embedded Systems Letters  
Index Terms-Algorithmic-noise tolerance, error resiliency, subthreshold operation, ultra low-power electronics, voltage overscaling.  ...  We show that the MEOP in subthreshold designs can be further lowered by employing frequency overscaling (FOS) or voltage overscaling (VOS) and ANT to correct for intermittent timing errors.  ...  INTRODUCTION A PPLICATIONS such as medical portable processors and implants, distributed sensor networks, and active radio-frequency identifications (RFIDs) require ultra low-power operation in order to  ... 
doi:10.1109/les.2010.2098330 fatcat:3nvkahy5dbcvpl6urnf3ei6yzq

Characterizing and modeling minimum energy operation for subthreshold circuits

Benton H. Calhoun, Anantha Chandrakasan
2004 Proceedings of the 2004 international symposium on Low power electronics and design - ISLPED '04  
Subthreshold operation is emerging as an energy-saving approach to many new applications. This paper examines energy minimization for circuits operating in the subthreshold region.  ...  SPICE simulations of a 200K transistor FIR filter confirm the analytical solution and the dependence of the minimum energy operating point on important parameters.  ...  Emerging ultra-low power applications such as distributed sensor networks are a natural fit with subthreshold circuits.  ... 
doi:10.1145/1013235.1013265 dblp:conf/islped/CalhounC04 fatcat:gg2h4mtq2zapfog7uqswiiepsq

Standard cell library design with voltage scaling and transistor sizing for ultra-low-power biomedical applications

Chio-In Ieong, Mingzhong Li, Man-Kay Law, Pui-In Mak, Mang-I Vai, Peng-Un Mak, Feng Wan, Rui P. Martins
2013 2013 IEEE International Conference of Electron Devices and Solid-state Circuits  
This paper reports the design and optimization of a standard cell library in 0.18µm CMOS, together with the analysis on voltage scaling and transistor sizing for ultra-low power biomedical applications  ...  By simulating with a 8-bit 4-tap FIR filter at 0.6V clocked 100kHz, the design achieves 18.6× and 1.55× lower power consumption comparing to a commercial standard cell library working at nominal voltage  ...  INTRODUCTION Ultra-low power electronic is important especially for biomedical and portable applications for prolonging battery life.  ... 
doi:10.1109/edssc.2013.6628062 fatcat:mfslaz63vbdchbcy2meji4aysu

Guest Editorial Advances in Design of Energy-Efficient Circuits and Systems (Second Issue)

Enrico Macii, Vijaykrishnan Narayanan, Kaushik Roy
2011 IEEE Journal on Emerging and Selected Topics in Circuits and Systems  
The paper entitled "Analysis of Ultra- The paper entitled "Power Reduction in Frequency-Selective FIR Filters under Voltage Overscaling" by R. Liu and K.  ...  Parhi presents novel noise reduction unit architectures, specifically developed to solve challenging problems in the design of low power finite impulse response filters.  ... 
doi:10.1109/jetcas.2011.2170596 fatcat:sjns2uegqna5loa4f5xtdhgfs4

A Batteryless 19 $\mu$W MICS/ISM-Band Energy Harvesting Body Sensor Node SoC for ExG Applications

Yanqing Zhang, Fan Zhang, Yousef Shakhsheer, Jason D. Silver, Alicia Klinefelter, Manohar Nagaraju, James Boley, Jagdish Pandey, Aatmesh Shrivastava, Eric J. Carlson, Austin Wood, Benton H. Calhoun (+1 others)
2013 IEEE Journal of Solid-State Circuits  
This SoC utilizes recent advances in energy harvesting, dynamic power management, low voltage boost circuits, bio-signal front-ends, subthreshold processing, and RF transmitter circuit topologies.  ...  This paper presents an ultra-low power batteryless energy harvesting body sensor node (BSN) SoC fabricated in a commercial 130 nm CMOS technology capable of acquiring, processing, and transmitting electrocardiogram  ...  , and ultra-low power flexible DSP architecture [8] .  ... 
doi:10.1109/jssc.2012.2221217 fatcat:dhzv7r5vcbhxxlxb4lq2t7j6ya

Minimum Energy Tracking Loop With Embedded DC–DC Converter Enabling Ultra-Low-Voltage Operation Down to 250 mV in 65 nm CMOS

Yogesh K. Ramadass, Anantha P. Chandrakasan
2008 IEEE Journal of Solid-State Circuits  
Index Terms-DC-DC conversion, energy sensor circuitry, minimum energy point, minimum energy tracking loop, subthreshold logic, ultra-low-voltage operation.  ...  The DC-DC converter delivers load voltages as low as 250 mV and achieved an efficiency 80% while delivering load powers of the order of 1 W and higher from a 1.2 V supply.  ...  The minimum energy operating voltage usually falls in the subthreshold regime of operation and for the 7-tap FIR filter is at 420 mV.  ... 
doi:10.1109/jssc.2007.914720 fatcat:cfn3tjv2njhglarifw3lylbzr4

Design Considerations for Ultra-Low Energy Wireless Microsensor Nodes

B.H. Calhoun, D.C. Daly, N. Verma, D.F. Finchelstein, D.D. Wentzloff, A. Wang, Seong-Hwan Cho, A.P. Chandrakasan
2005 IEEE transactions on computers  
We propose an architecture for achieving the required ultra-low energy operation and discuss the circuit techniques necessary to implement the system.  ...  This tutorial paper examines architectural and circuit design techniques for a microsensor node operating at power levels low enough to enable the use of an energy harvesting source.  ...  Subthreshold Optimization As a case study, we examine the parallel 8-bit, 8-tap FIR filter introduced in Fig. 7 .  ... 
doi:10.1109/tc.2005.98 fatcat:xhzv2mokybbcljpvfon5n7247q

Ultralow Power Computing with Sub-threshold Leakage: A Comparative Study of Bulk and SOI Technologies

A. Raychowdhury, B.C. Paul, S. Bhunia, K. Roy
2006 Proceedings of the Design Automation & Test in Europe Conference  
Simulation results of co-design on a five-tap FIR filter shows ~2.5x (for bulk) and ~3.8x (for SOI) improvement in throughput at iso-power compared to a conventional design.  ...  (b) The power-throughput trade-off of a fivetap FIR filter. The corresponding Vdds are shown.  ...  Fig. 1b illustrates the power vs. throughput of a conventional FIR filter (a typical signal processing application). On one hand we have the high performance and high power regime.  ... 
doi:10.1109/date.2006.243768 dblp:conf/date/RaychowdhuryPBR06 fatcat:f5twn56b6veatosld2iruc72zi

2018 Index IEEE Transactions on Circuits and Systems I: Regular Papers Vol. 65

2018 IEEE Transactions on Circuits and Systems Part 1: Regular Papers  
., +, TCSI March 2018 1143-1153 Chebyshev filters A Power-Efficient Reconfigurable OTA-C Filter for Low-Frequency Biomedical Applications.  ...  ., +, TCSI July 2018 2059-2069 Butterworth filters A Power-Efficient Reconfigurable OTA-C Filter for Low-Frequency Biomedical Applications.  ... 
doi:10.1109/tcsi.2019.2896877 fatcat:3lzpngw2ofdjhiculf7ehrjeam

A Super-Pipelined Energy Efficient Subthreshold 240 MS/s FFT Core in 65 nm CMOS

Dongsuk Jeon, Mingoo Seok, Chaitali Chakrabarti, David Blaauw, Dennis Sylvester
2012 IEEE Journal of Solid-State Circuits  
Index Terms-Fast Fourier Transform (FFT), subthreshold CMOS circuits, super-pipelining, ultra low voltage (ULV) design.  ...  We apply these techniques to a 16-b 1024-pt complex-valued Fast Fourier Transform (FFT) core along with low-power first-in first-out (FIFO) design and robust clock distribution network.  ...  Area-time-energy optimization has been applied in a FIR filter [21] previously to improve energy efficiency with fixed throughput.  ... 
doi:10.1109/jssc.2011.2169311 fatcat:b6dmqcr5cjhqfd3lhtv5lhbqym

2019 Index IEEE Transactions on Circuits and Systems I: Regular Papers Vol. 66

2019 IEEE Transactions on Circuits and Systems Part 1: Regular Papers  
., +, TCSI Dec. 2019 4699-4712 Ultra-Low Power QRS Detection and ECG Compression Architecture for IoT Healthcare Devices.  ...  Bubolz, T.L.A., +, TCSI June 2019 2124-2136 Ultra-Low Power QRS Detection and ECG Compression Architecture for IoT Healthcare Devices. Tekeste, T., +, TCSI Feb.  ... 
doi:10.1109/tcsi.2020.2966967 fatcat:f663jj5g45e3peggn3gwn5jys4

Sub-VT design of a wake-up receiver back-end in 65 nm CMOS

Nafiseh Seyed Mazloum, Joachim Neves Rodrigues, Ove Edfors
2012 2012 IEEE Subthreshold Microelectronics Conference (SubVT)  
In sensor network applications, the use of dutycycled ultra-low power wake-up receivers can significantly reduce overall power consumption.  ...  In this paper we address this very issue by presenting the design, implementation, and sub-VT characterization of a digital back-end for such an ultra-low power WRx.  ...  To design an ultra low-power communication system it is crucial to combine a low-power transceiver circuit with an optimized communication protocol.  ... 
doi:10.1109/subvt.2012.6404304 fatcat:zafusemurva23d65idllvx74fi

Variation resilient adaptive controller for subthreshold circuits

B. Mishra, B.M. Al-Hashimi, M. Zwolinski
2009 2009 Design, Automation & Test in Europe Conference & Exhibition  
Subthreshold logic is showing good promise as a viable ultra-low-power circuit design technique for powerlimited applications.  ...  We propose a variation resilient adaptive controller for subthreshold circuits with the following novel features: new sensor based on time-to-digital converter for capturing the variations accurately as  ...  We would also like to thank Dr N.Ross and Rishad A Shafik for their valuable discussions.  ... 
doi:10.1109/date.2009.5090648 dblp:conf/date/MishraAZ09 fatcat:q4e6hqa73be6birftbigt65yja
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