Electronic circuit production is a significant industry. Ever more complex behaviors are being demanded from electronic circuits, fuelled by relentless improvements in circuit embodiment technologies. Consequently a bottleneck is developing at the point of circuit design. Traditional circuit design methodologies rely on rules that have been developed over many decades. However the need for huma...

This paper describes circuit evolutionary experiments at extreme low temperatures, including the test of all system components at this extreme environment (EE). In addition to hardening-by-process and hardeningby-design, “hardening-by-reconfiguration ”, when applicable, could be used to mitigate drijts, degradation, or damage on electronic devices (chips) in EE, by using re-con$gurable devices ...

A latchup current self-stop methodology and circuit design, which are used to prevent damage in the bulk CMOS integrated circuits due to latchup, are proposed in this paper. In a bulk CMOS chip, the core circuit blocks are always latchup sensitive due to a low holding voltage of the parasitic SCR path. The proposed latchup prevention methodology and circuit design can detect and stop the occurr...

IT OWES US GREAT PLEASURE to present this special issue on asynchronous circuits and systems. The recent surge of interest in asynchronous circuits came about after an increase in VL.9 communication applications and the current push toward achieving higher performance at lower power and design cost. Most of the recent literature on this topic, however, comes from academia and tends to be quite ...

An increasing demand on qualified IC designers requires engineering schools to train more graduates with specialty in IC design. These newly trained graduates should not only have strong fundamentals, but also good analytical and practical skills. They should be able to quickly adapt to the commercial environment and require minimum training when hired by the design firms. A twosemester project...

in some mobile systems, intelligent antennas are used to increase efficiency in a wide frequency band and different environmental and electromagnetic conditions. environmental factors, such as position of nearby objects, antenna mobility and even user type, can vary the antenna input impedance appreciably. therefore, it is necessary to incorporate an adaptive impedance matching circuit between ...

Signals and systems is an important aspect of radio science. The recent progress of the research activities of signals and systems in China is reviewed in this paper. It covers the most advanced and important developments during years of 1998~2001. The review is based on the following categories: wideband CDMA, software radio, digital audio broadcasting technologies, information processing, rad...

In this paper we illustrate the application of a synthesis procedure used for timed asynchronous circuits to the design of synchronous circuits. In addition to providing a uniform synthesis approach, our procedure results in circuits that are significantly smaller and faster than those designed using the synchronous design tool SIS. .

This paper presents the latest implementation of the SIMD Current-mode Analogue Matrix Processor architecture. The SCAMP-3 vision chip has been fabricated in a 0.35μm CMOS technology and comprises a 128×128 general-purpose programmable processor-perpixel array. The architecture of the chip is overviewed and implementation issues are considered. The circuit design of the analogue register is pre...

The basic idea of the circuit fault diagnosis method based on logic is to establish a computer expert database system first, connect GPIB interface card, and then each intelligent instrument through standard bus. Through connection tested object adapter object, test platform are formed. Based traditional simulation model, this paper improves switching power supply, designs model simulation, dea...