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In order to perfect the simulation of fast and very fast transient in power transformer and describe the impact of the broadband losses in power transformers accurately, this paper carried out the research of broadband losses characteristics in power transformer windings. Network analyzer Agilent 4395A was selected to measure the voltage transfer functions of testing transformer. Based on the measured...
An authentic mode-toggled detector (AMTD) technique is proposed to achieve load and line regulations in a proposed buck-boost (BB) converter. In the case of load transient, conventional BB converter will oscillate and cannot settle to a wellregulated output voltage owing to the on-resistance of the power MOSFETs. Accurate and expeditious mode-toggled detection in the BB converter meet the requirements...
This paper presents an improved decision feedforward equalizer (DFFE) for high speed receivers operating on highly dispersive channels. The DFFE has been recently proposed for multigigabit communication receivers, where the use of parallel processing is required. Well-known parallel architectures for the traditional decision feedback equalizer (DFE) have a complexity which grows exponentially with...
In this paper we present an analysis of resonant wireless power transfer in systems with multiple receivers. We show that maximum power transfer can be achieved when the source is impedance matched to the set of receivers, i.e. matched to their equivalent impedance as seen by the source. The interaction of the receivers, or coupled modes, simply represent an interdependence of impedances that can...
Continuous Time Digital Signal Processing features some interesting improvements with respect to power consumption and signal quality compared to classical Discrete Time Signal Processing Systems. Signals processed in continuous time provide an improved Signal to Noise ratio and the power consumption can be reduced, due to the property that the signal is only processed when an appropriate change in...
Developing a resonant inductively powered system for implantable devices is difficult due to the constraints on the operating coupling range, power level, and size. It is not trivial to determine the suitable resonant topology, tuning capacitors, power transfer coils, and operating frequency. Often the system parameters, such as the operating frequency, are designed using nominal values or a trial...
It is very important and challenging to teach modern topics at the freshman level. This paper describes a biometrics module that fits into any introductory freshman engineering course. The project has broad learning outcomes, namely, enhanced application of math skills, software implementation skills, interest in biometrics and comprehension of ethical issues. Assessment results based on the analysis...
This paper presents the design of a 60-GHz rectenna with an on-chip antenna and rectifier in 65nm CMOS technology. The rectenna is often the bottleneck in realizing a fully-integrated monolithic wireless sensor tag. In this paper, problems of the mm-wave rectifier are discussed, and the self-threshold voltage modulation method is proposed for better sensitivity and efficiency. Based on this discussion,...
Deinterlacing is well known as an ill-posed problem of video restoration. In this paper, a self-validation framework is proposed to solve the problem. First, various algorithms with different assumptions will be performed to generate candidate results. Then, a method called double interpolation is applied to test the consistency of each algorithm. Finally, the value of each missing pixel will be chosen...
The charging characteristics of non-radiative wireless power link (NWPL) have been well unknown. This paper shows that series-series (SS) compensated NWPL system behaves as a constant current power supply when the inverter operates at the resonant frequency of self-inductance and resonant capacitors.
Resonant Inductive Coupling Wireless Power Transfer is a key technology to provide an efficient and harmless wireless energy channel to consumer electronics, biomedical implants and wireless sensor networks. However, there are two factors that are limiting the applicability of this technology: the effects of distance variation between transmitter and receiver and the effects of interfering objects...
This paper presents a 7T near-threshold SRAM with design techniques for improving cell stability and energy efficiency. The proposed write through virtual ground (WTVG) scheme decreases the period of write disturbance by 6.1×. A PVT tracking sensing scheme is presented to track variation and sense small RBL swing. The ultra-fine grain power gating switches are implemented to minimize the redundant...
Architecture level optimizations for reducing power consumption in commonly used digital filter implementations are studied. We look at two optimizations (data shifting and offset addition) when the operating condition is very different from the worst case scenarios for which the filters are designed, and show how to use them to exploit this behavior. We study the reduction in switching activity for...
Recent imprecise hardware (IHW) design methodologies present opportunities for achieving gains in nonfunctional efficiency design metrics by allowing errors in computation within error tolerant application domains. This work presents a novel imprecise Error Tolerant Balancing Adder (ETBA) design — an augmentation of the ETAIIM IHW adder that reduces errors by introducing a balance block that detects...
Mask processing is commonly used in many video/image processing functions such as scaling, noise reduction, and edge enhancement by referring several pixels in the adjacent area to generate a processed pixel. Embedded memory therefore occupies large area and consumes power to store and process pixel data, especially for those low-cost applications without a framebuffer. In this paper, we design a...
We describe a dual-core 8051 microcontroller system featuring the synchronous and asynchronous (clockless) mode of operation. The synchronous mode of operation is achieved by means of a synchronous 8051 microcontroller core, while the asynchronous mode of operation is achieved by means of an asynchronous 8051 microcontroller core. The 8051 microcontroller system features shared embedded program and...
This paper presents the design of a low power digital baseband core with a custom-tailored protocol for wirelessly powered Micro-Neural-Interface (MNI) system on a chip (SoC) to be implanted within the skull to record cortical neural activities. The core, on the tag end of multiple sensors, is designed to control the operation and the interface with the whole MNI SoC based on received downlink commands...
In this paper we propose a fully parallel 64K point radix-44 FFT processor. The radix-44 parallel unrolled architecture uses a novel radix-4 butterfly unit which takes all four inputs in parallel and can selectively produce one out of the four outputs. The radix-44 block can take all 256 inputs in parallel and can use the select control signals to generate one out of the 256 outputs. The resultant...
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