A5007393900- Numerical Methods and Algorithms
- Digital Filter Design and Implementation
- Cryptography and Residue Arithmetic
- Low-power high-performance VLSI design
- Coding theory and cryptography
- Analog and Mixed-Signal Circuit Design
- Advanced Memory and Neural Computing
- Neural Networks and Applications
- Advanced Data Compression Techniques
- VLSI and Analog Circuit Testing
- Image and Signal Denoising Methods
- CCD and CMOS Imaging Sensors
- Parallel Computing and Optimization Techniques
- Quantum-Dot Cellular Automata
- Cellular Automata and Applications
- Video Coding and Compression Technologies
- Chaos-based Image/Signal Encryption
- Quantum and electron transport phenomena
- Cryptographic Implementations and Security
- VLSI and FPGA Design Techniques
- Advancements in PLL and VCO Technologies
- Embedded Systems Design Techniques
- Advanced Vision and Imaging
- Interconnection Networks and Systems
- Advancements in Semiconductor Devices and Circuit Design
Université Paris-Saclay
2024-2025
Institut de Recherche sur les Lois Fondamentales de l'Univers
2025
Commissariat à l'Énergie Atomique et aux Énergies Alternatives
2024
CEA Paris-Saclay
2024
University of Calgary
2003-2013
University of Windsor
1999-2011
IntelliView Technologies (Canada)
2009
German University in Cairo
2009
Northwest University
2008
Calgary Laboratory Services
2003-2007
This paper describes a project to create novel design and simulation tool for quantum-dot cellular automata (QCA), namely QCADesigner. QCA logic circuit designers require rapid accurate layout determine the functionality of circuits. QCADesigner gives designer ability quickly by providing an extensive set CAD tools. As well, several engines facilitate simulation. has already been used full-adders, barrel shifters, random-access memories, etc. These verified layouts provide motivation...
The basic Boolean primitive in quantum cellular automata (QCA) is the majority gate. In this paper, a method for reducing number of gates required computing three-variable functions developed to facilitate conversion sum-of-products expression into QCA logic. Thirteen standard are introduced represent all and simplified expressions corresponding these presented. We describe novel using convert By applying method, hardware requirements design can be reduced. As an example, 1-bit adder...
A remotely powered implantable microsystem for continuous blood glucose monitoring is presented. The consists of a microfabricated biosensor flip-chip bonded to transponder chip. chip inductively by an external reader with 13.56-MHz carrier. It then measures the output signal and transmits measured data back using load-shift keying (LSK). has volume 32 mm(3). procedures microfabrication sensor assembly are described along description circuit blocks been fabricated TSMC 0.18-mum CMOS process...
In this paper, a novel quantum-dot cellular automata (QCA) adder design is presented that reduces the number of QCA cells compared to previously reported designs. The proposed one-bit structure based on new algorithm requires only three majority gates and two inverters for addition. By connecting n adders, we can obtain an n-bit carry look-ahead with reduced hardware while retaining simple clocking scheme parallel original approach. designed simulated using Designer tool four-bit case. about...
The future of system-on-chip (SoC) technologies, based on the scaling current FET-based integrated circuitry, is being predicted to reach fabrication limits by year 2015. Economic may be reached before that time. Continued electronic devices molecular scales will undoubtedly require a paradigm shift from switch an alternative mechanism information representation and processing. This also have encompass tools design culture made SoC technology possible-the ability monolithic circuits with...
A technique is presented whereby a class of recursive digital filters can be designed to approximate simultaneously given magnitude and linear phase characteristics. The underlying approach linearize the inherently nonlinear approximation problem, thereby use programming carry out approximation. specified in terms desired constant group delay. Therefore, constraints program become function Thus design algorithm consists carrying univariant search within range delay values obtain minimum...
We present a new circuit topology for potentiostats that interface with three-electrode amperometric electrochemical sensors. In this topology, current-copying circuit, e.g., current mirror, is placed in the sensor path to generate mirrored image of current. The then measured and processed instead itself. potentiostat consumes very low power, occupies small die area, has potentially noise. These characteristics make suitable portable or bioimplantable applications. order demonstrate...
The efficient hardware implementation of residue number system (RNS) architectures has evolved based on the development integrated circuit technology. RNS adders is discussed in this paper. Three approaches (the binary adder, look-up table, and hybrid implementation) are analyzed scope VLSI criteria where performance measures area time. Two layout design procedures have been used. They flexible support any type moduli. complexity depends form size modulus, but, general, table approach...
In this paper, a new design technique for column-compression (CC) multipliers is presented. Constraints column compression with full and half adders are analyzed and, under these constraints, considerable flexibility implementation of the CC multiplier, including allocation adders, choosing length final fast adder, exploited. Using example an 8/spl times/8 bit we show that architectures obtained from more area efficient, have shorter interconnections than classical Dadda multiplier. We...
In this paper, we discuss arithmetic structures based on quantum cellular automata (QCA). By taking advantage of the unique capabilities QCA are able to design interesting computational architectures. We describe important considerations and show how addition multiplication circuits can be implemented using QCADesigner, a tool which has been developed in our laboratory. technology allows, among other things, implementation majority boolean gates interconnecting "wires" that support...
In this paper, we analyze some of the main properties a double base number system, using bases 2 and 3; in particular, emphasize sparseness representation. A simple geometric interpretation allows an efficient implementation basic arithmetic operations introduce index calculus for logarithmic-like with considerable hardware reductions lookup table size. We discuss application system area digital signal processing; illustrate discussion examples finite impulse response filtering.
QCA adders are fundamental building blocks of complex computational units. In our analysis, we show that ripple-carry adder and bit-serial designs actually outperform carry-look-ahead carry-select designs. The require fewer clocking zones, which have been found to be the main contributing factor toward overall circuit latency.
Fabrication results for MEMS-based microneedle arrays are presented in this paper. The array was fabricated by employing a bi-mask technique to facilitate sharp tips, cylindrical body and side openings. has advantages over previously published terms of ease fabrication bonding; high needle density robustness; openings, which expected minimize the potential clogging from skin debris during insertion. In addition, control process via etch-stop markers employed as stop layers, assure depth long...
Majority gate-based logic is not normally explored with standard CMOS technologies, primarily because of the hardware inefficiencies in creating majority gates. As a result, much effort has been made towards optimization circuits based on We are exploring one particular emerging technology, quantum-dot cellular automata (QCA), which gate fundamental primitive. report simple and intuitive method for reduction three-variable Boolean functions into simplified representation. The Karnaugh maps...
We analyze the behavior of quantum-dot cellular automata (QCA) building blocks in presence random cell displacements. The QCA cells are modeled using coherence vector description and simulated QCADesigner. evaluate various fundamental circuits: wire, inverter, majority gate, two-wire crossing approaches: coplanar crossover multilayer crossover. Our results show that different have displacement tolerances. inverter perform weakest. wire is most robust. found tolerances to be a function...
Superconducting qubits have arisen as a leading technology platform for quantum computing, which is on the verge of revolutionizing world's calculation capacities. Nonetheless, fabrication computationally reliable qubit circuits requires increasing coherence lifetimes, are predominantly limited by dissipations two-level system defects present in thin superconducting film and adjacent dielectric regions. In this paper, we demonstrate reduction losses three-dimensional radio frequency niobium...
This study investigates the use of atomic layer deposition (ALD) to mitigate multipacting phenomena inside superconducting radio frequency cavities used in particle accelerators while preserving high quality factors 1010 range. The unique ALD capability control film thickness down level on arbitrary complex shape objects enables fine-tuning TiN resistivity and total electron emission yield (TEEY) from coupons devices. allows us adequately choose a that provides both prevent Ohmic losses low...
An efficient algorithm, which converts residue numbers, module (2/sup n/+1, 2/sup n/, n/-1), into an equivalent binary number, is proposed; the algorithm improves on a previously published technique. A novel hardware implementation also discussed. In comparison with two converters, proposed converter provides at least 40% saving and 45% reduction in delay.
In this work, we present a high level evaluation of an emerging nanotechnology to determine set technology requirements. The under question is Quantum-Dot Cellular Automata (QCA). As vehicle, two different QCA circuits and evaluate the requirements based on specifications these circuits. These are simple 4-bit arithmetic logic unit (ALU) 4/spl times/4 memory which building blocks more complex systems such as computer central processing (CPU).
We describe the design and layout of a simple 4-bit processor based on quantum dot cellular automata (QCA) using QCADesigner tool. The is an accumulator architecture which reduces required hardware complexity allows for reasonable simulation times. Our aim to provide evidence that QCA has potential applications in future computers provided underlying technology made feasible.