A modified SPICE is used to accommodate distributed circuits. The distributed circuits are built with microwave analysis software and connected to SPICE by s-parameter files. The modeling process is described and examples of thick and thin film power supply planes are presented with comparison to measured results. The method is used to explore potential design choices for a large MCM with many ...

For SPICE level circuit development, corner models address the designer’s need for fast simulations which can reproduce specific scenarios of interest. To systematically and automatically determine the model parameters for the corners, we present a methodology based on a constrained least squares optimization. We also show how it performs when applied to some of our devices for best and worst c...

SPICE data files are known as “kernels”, and come in a wide variety. Mission specific kernels provide information about the orbital position and orientation of the spacecraft as a function of time. On top of these are more generic kernels, such as a general solar system ephemeris, planetary constants, and so on. The SPICE system puts these various elements together into a common integrated system.

This paper presents an analysis technique that can be used to compute the harmonic and intermodulation distortion levels of a sampled-data circuit directly from a SPICE transient analysis. It is useful for analyzing the non-linear behavior of switched-capacitor and switched-current circuits at the transistor level. The approach is valid for all input signal levels, makes no assumption of the un...

-Generally good agreement was obtained between the single-event output voltage transient waveforms obtained by exposing individual circuit elements of a bipolar comparator and operational amplifier to an ion microbeam, a pulsed laser beam, and circuit simulations using SPICE. The agreement was achieved by adjusting the amounts of charge deposited by the laser or injected in the SPICE simulation...

AbstructWe present a method for SPICE model parameter extraction for a bipolar transistor in the active and quasisaturation modes. It uses the capabilities of the BIPOLE3 [l] simulator to enhance the optimization procedure. Comparisons are made between the Gummel-Poon, the VBIC95, and the SGSThomson Microelectronics SPICE model results for IC (1 ). I R ( T A , ). 3(1( ). f r ( I c ) , and Ir(1i...

This paper describes the incorporation of an accurate physics-based model of the resonant tunneling diode (RTD) into Berkeley SPICE version 3F5 and addresses the related direct current (dc) and transient convergence problems caused by the negative differential resistance (NDR) and the exponential nature of the device characteristics. To circumvent the dc convergence problems, a new continuation...

The aim of this study was to find out the effect of selected spices on chemical and sensorial markers in cakes formulated on rye and light buckwheat flour fortified with spices. Among collection of spices, rye-buckwheat cakes fortified individually with cloves, nutmeg, allspice, cinnamon, vanilla, and spice mix revealed the highest sensory characteristics and overall quality. Cakes fortified wi...

SPICE (Simulation Program with Integrated Circuit Emphasis) is a widely used circuit simulation framework for integrated circuit designs. The basic skeleton of SPICE time domain simulation was derived from the versions developed in UC Berkeley during the 1970s. In this paper, we report most recent numerical integration methods to improve traditional SPICE time integration schemes, which are bas...

OBJECTIVES To describe the development and validation of an instrument designed to assess student perceptions of physician-pharmacist interprofessional clinical education (SPICE). METHODS Faculty members from pharmacy and medical schools developed items for the instrument, and 179 medical and pharmacy students completed the scale. Psychometric properties, including reliability and construct v...