The design of a simple, fast and accurate sample and hold circuit using a switched op-amp configuration is presented. The unique characteristic of this sample and hold circuit is the cancellation of charge injection effects due to the symmetrical output switched transistors circuit and device configuration. The clock-feed through effect is also reduced by applying the effect of clock pulses to ...

Multiple upsets would be available in SRAM-based FPGAs which utilizes SRAM in different parts to implement circuit configuration and to implement circuit data. Moreover, configuration bits of SRAMbased FPGAs are more sensitive to upsets compared to circuit data due to significant number of SRAM bits. In this paper, a new protected Configurable Logic Block (CLB) and FPGA architecture are propose...

In automated assembly of printed circuit boards, the placement sequencing and feeder configuration problems turns out to be two of the four major problems that need to be solved efficiently to get better utilization from the use of computer controlled electronic component placement machines. The forms of these problems may show variability depending on the architecture of the placement machine ...

This thesis examines the problem of reducing reconfiguration time of an island-style FPGA at its configuration memory level. The approach followed is to examine configuration encoding techniques in order to reduce the size of the bitstream that must be loaded onto the device to perform a reconfiguration. A detailed analysis of a set of benchmark circuits on various island-style FPGAs shows that...

Traditionally physical systems have been designed by engineers using complex collections of rules and principles. The design process is top-down in nature and begins with a precise specification. This contrasts very strongly with the mechanisms which have produced the extraordinary diversity and sophistication of living creatures. In this case the ‘‘designs’’ are evolved by a process of natural...

A circuit configuration, a circuit topological family, a buck-mode active clamped circuit, and an on the spot output voltage feedback management strategy of combined duplex buck–boost dc–dc chopper-mode electrical converter with highfrequency (HF) link (HFL) were projected and absolutely investigated during this paper. The steady principle characteristic and therefore the criterion for the key ...

Development of Millimeter Wave Integrated-Circuit Interferometric Sensors for Industrial Sensing Applications. (December 2004) Seoktae Kim, B.S., Inha University, S. Korea; M.S., Pohang University of Science and Technology, S. Korea Chair of Advisory Committee: Dr. Cam Nguyen New millimeter wave interferometric, multifunctional sensors have been studied for industrial sensing applications: disp...

AbstructA novel BiCMOS full-swing circuit technique with superior performance over CMOS down to 1.5 V is proposed. A conventional noncomplementary BiCMOS process is used. The proposed pull-up configuration is based on a capacitively coupled feedback circuit. Several pull-down options were examined and compared, and the results are reported. Several cells were implemented using the novel circuit...

We study the concept of a basic building block for circuits using differential signaling and being based on graphene field effect devices. We fabricated a number of top-gated graphene FETs using commercially available graphene and employing electron beam lithography along with other semiconductor manufacturing processes. These devices were then systematically measured in an automated setup and ...

The Butler matrix [1] is a beam-forming network for a multi-beam array antenna. The main-beam direction can be switched according to the input port. Conventional Butler matrix suffers from high crossover levels between adjacent main beams of -3.7dB and high sidelobe levels of -11.4dB independent on the number of ports, theoretically. In order to solve these problems, the configuration of a circ...