Distributed-element circuit

Distributed-element circuits are electrical circuits composed of lengths of transmission lines or other distributed components. These circuits perform the same functions as conventional circuits composed of passive components, such as capacitors, inductors, and transformers. They are used mostly at microwave frequencies, where conventional components are difficult (or impossible) to implement. Conventional circuits consist of individual components manufactured separately then connected together with a conducting medium. Distributed-element circuits are built by forming the medium itself into specific patterns. A major advantage of distributed-element circuits is that they can be produced cheaply as a printed circuit board for consumer products, such as satellite television. They are also made in coaxial and waveguide formats for applications such as radar, satellite communication, and microwave links. A phenomenon commonly used in distributed-element circuits is that a length of

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A completely scalable lumped-circuit model for horizontal and vertical HALL devices

Predrag Drljaca, Radivoje Popovic

A completely scalable lumped-circuit model for horizontal and vertical HALL devices is presented therein that can be efficiently implemented in SPICE-like EDA simulators. The model has been employed for the quantitative analysis of. a) geometrical, b) temperature, and c) field-dependent mobility effects, as well as for d) the dynamic response and e) the noise behavior of several HALL sensors. A series of experimental data is presented along with simulation results.

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Inverse Gating for Low Energy Encryption

Subhadeep Banik

In this paper we explore the technique of "inverse gating" which is a significant improvement over the "round gating" technique introduced in HOST 2016. Round gating worked by generating timing signals to separate glitch propagation from one circuit element to the next. Inverse gating generates the same timing signals required to segregate transient round signals, in a manner that incurs less delay and hence lesser switching activity in the circuits. We also show that energy-wise, inverse gated circuits outperform round gated circuits by a margin of around 30 %. In the second part of the paper, we further explore the efficiency of the energy reduction by tuning some of the design parameters. The most natural candidate for this was the delay of the buffer used for creating the timing signals. We found that the optimal energy consumption for any round and inverse gated unrolled block cipher occurs at a particular range of this delay value. We try to explain the optimality of this particular choice of design parameter with the help of the implementation of the AES-128 block cipher.

2018

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Inverse Gating for Low Energy Block Ciphers

Subhadeep Banik, Francesco Regazzoni

In this paper we explore the technique of “inverse gating” which is a significant improvement over the ”round gating” technique introduced in HOST 2016. Round gating worked by generating timing signals to separate glitch propagation from one circuit element to the next. Inverse gating generates the same timing signals required to segregate transient round signals, in a manner that incurs less delay and hence lesser switching activity in the circuits. We also show that energy-wise, inverse gated circuits outperform round gated circuits by a margin of around 30 %. In the second part of the paper, we further explore the efficiency of the energy reduction by tuning some of the design parameters. The most natural candidate for this was the delay of the buffer used for creating the timing signals. We found that the optimal energy consumption for any round and inverse gated unrolled block cipher occurs at a particular range of this delay value. We try to explain the optimality of this particular choice of design parameter with the help of the implementation of the AES-128 block cipher.

2018

Chargement

Waveguide filter

A waveguide filter is an electronic filter constructed with waveguide technology. Waveguides are hollow metal conduits inside which an electromagnetic wave may be transmitted. Filters are devices

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Une ligne de transmission est un ensemble de deux conducteurs acheminant de concert un signal électrique, d'une source (ou émetteur) vers une charge (ou récepteur). On doit considérer une paire de con

EE-445: Microwaves, the basics of wireless communications

This course is an introduction to microwaves and microwave passive circuits. A special attention is given to the introduction of the notion of distributed circuits and to the scattering matrix

EE-519: Bioelectronics and biomedical microelectronics

The course covers the fundaments of bioelectronics and integrated microelectronics for biomedical and implantable systems. Issues and trade-offs at the circuit and systems levels of invasive microelectronic systems as well as their eluding designs, methods and classical implementations are discussed