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Electromigration (EM) is a significant problem in integrated circuits and can seriously damage interconnect wires and vias, reducing the circuit's lifetime. In this paper we are simulating the EM effects on 6 different metal layers for different wire lengths incorporating Joule heating effects. The layouts are constructed considering the 45nm technology and scaled to 22nm technology. We are simulating...
Wireless Sensor Networks (WSNs) are known to be greatly energy-constrained, especially for vision-based applications. Image compression can provide energy efficiency by reducing the data flow to be transmitted at the cost of more computation. The compression scheme must be designed with respect to the tradeoff between computational complexity and compression ratio. The aim of this paper is to present...
A high gain low noise amplifier for radiometrie applications in the W band has been designed in 28 nm bulk CMOS technology and characterized experimentally. The design of pads, inductors, capacitors, coplanar waveguides and interconnect lines has been carried out by means of electromagnetic simulations. The parasitic effects of the transistor layout have been evaluated by means of electromagnetic...
An 8 stage reconfigurable charge pump is presented for MEMS electrostatic actuation. The circuit attains a simulated output voltage of 10.62 V from a 1.2 V supply with digitally programmable voltage levels. Reduced power consumption is achieved using a variable frequency clock. The charge pump exhibits a short rise time of 1.56 μs with a 50 MHz clock and 1 pF load. The circuit is designed in 0.13...
This paper analyzes the power consumption behavior of a fully reconfigurable LNA (G, NF and IIP3) in an RF receiver. The proposed behavioral modeling alters LNA parameters in response to input signal power, while the power consumption of this building block is estimated. The results show that applying this method on the Bluetooth LE and IEEE802.15.4 standards led to 2.5 times less LNA power consumption...
Designing an efficient locomotion system is a major problem in robots. Inspired by biological Central Pattern Generator (CPG), different bio inspired structures have been used in mobile robots like hexapods, octopods, lamprey-like and worm-like robots. CPG is a network of connected neurons with a rhythmic pattern output. This paper proposes a CPG based on Adaptive-Exponential (AdEx) spiking neuron...
Although there are many sophisticated routing techniques to achieve the routing goal, old general purpose routing algorithms are still being used inside the routing process. This paper presents a new general purpose line probe routing algorithm. Our algorithm was compared to an implementation based on the Hetzel interval labeling technique. It aims to exploit frequent routing cases where Hetzel algorithm...
This paper discusses a methodology for design of broadband power amplifiers (PA's). In comparison to conventional class-F and inverse class-F modes, the continuous mode provides wider design space for the realization of broadband efficiency PAs through the proper termination of fundamental, second and third harmonic impedances. This manuscript presents an approach based on in-band mode transfer between...
Pulse Frequency Modulators have been proposed recently as an alternative to ring oscillators in the implementation of Voltage-Controlled-Oscillators Analog to Digital Converters (VCO-ADC). In this paper, we propose a passive pulse frequency modulator in terms of the integration process that uses digital inverters only and provides a polyphase output similar to a ring oscillator. Oscillation depends...
DC-DC converter is one of the most important building blocks in any System-on-Chip (SoC). DC-DC converter has the functional capabilities to supply various voltage levels to various loads of the chip in a way to achieve high power efficiency. Pulse Frequency Modulation is considered as the main control technique for voltage regulation of the Switched Capacitor DC-DC power converter. This paper proposes...
DC-DC converters are important building block of most of today's System-on-Chips (SoCs). This is true because the need to modulate the voltage of different parts of the chip to operate at the optimum level is essential to achieve high power efficiency. This paper investigates two topologies of the DC-DC converter that are widely used. The two topologies are Low Dropout regulator and Switched Inductor...
This paper presents a low-voltage bootstrapped switch that adopts a new technique to achieve its radiation hardening by design (RHBD). In order to improve the performances of CMOS switches used for switched-capacitor (SC) circuits, such as in sample-and-hold circuits or in pipeline analog-to-digital SC amplification stage, bootstrapped techniques are necessary but should not be directly applied for...
Due to cosmic radiation, semiconductor chips operating in space have to be protected particularly against Single Event Effects (SEE). The SpaceWire protocol is frequently used in space vehicles, connecting mission critical devices. To increase the reliability of a SpaceWire transceiver under these conditions, various fault tolerance concepts are presented, which protect the transceiver against Single...
The subject of the present work is the design, the testing and the implementation of a biodegradable and biocompatible pressure sensor that can be swallowed or implanted in the human body. It has to be biodegradable, at least in part, biocompatible and small in the size. The biodegradable polymer used (Polycaprolactone, PCL) and the technique of printing gold (200–400 nm thick) on it have played a...
Transition inversion coding (TIC) can reduce serial bus power dissipation by negating the even-numbered bits of a data word if the number of transitions in the data word is larger than half its word length. The codewords generated by TIC also enable up to a certain error detection rate. This paper proposes a method called PTIC that uses a parity bit along with TIC to achieve 100% single-bit error...
In this paper, we describe a new logic family based on a Double-Rail Redundant Approach, that we call D2RA. Each cell receives both the input bits and their negated values, and is made of two main blocks: the first one produces the output bit, the second one the inverted output bit. When a bit and its negated value have the same logic value, then an error occurred. In such a case, the two output bits...
In order to control a power supply using piezoelectric transformer, AC current in the transformer needs to be measured. Due to the control strategy it is necessary to measure amplitude, phase angle and zero crossing of this current. In some applications there is common ground between primary and secondary sides of the transformer which is internally implemented inside the transformer. Therefore, current...
The robustness of the system response to production factors and operating conditions is a big challenge as the systems grow in complexity and heterogeneity. In this paper, we propose a method that solves the robust parameter design problem. First, we define some cost functions based on the distribution of the system's response and, second, we estimate the dependence of the cost function on the controllable...
This paper presents a hybrid model of switch mode converter for AC to DC voltage conversion. It is a combination of boost and buck-boost converter. A closed loop voltage mode analog controller is implemented using K factor method. The proposed hybrid model overcomes the limitation of higher peak input AC voltage and provides a regulated output voltage. A hardware experimental setup (Input 1 to 5 V...
This paper presents an automatic layout generation tool for power MOSFET transistors in bulk CMOS. It is implemented in an open multiplatform language, Python, and is capable of generating area and power optimized transistors, which automatically meet DRC, DFM and ESD rule sets. The tool is able to fast create technology independent layouts, easily ported between technology nodes, and directly export...
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