Consideration is given to fault isolation of linear analog circuits taking the design tolerances on the nonfaulty elements into consideration. A two-step algorithm is proposed. First, an approximate method is used whe...
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Consideration is given to fault isolation of linear analog circuits taking the design tolerances on the nonfaulty elements into consideration. A two-step algorithm is proposed. First, an approximate method is used where a linear programming technique for isolating the elements most likely to be faulty is presented. Second, a verifying method for the faulty set is presented where the algebraic invariants associated with the faulty set are constructed. Both methods can also be used individually as independent methods for fault isolation.
A new class of Monte Carlo (MC) methods for yield estimation and optimization is proposed and applied to practical problems of statistical design centering and tolerancing in nonconvex acceptability regions. The appro...
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A new class of Monte Carlo (MC) methods for yield estimation and optimization is proposed and applied to practical problems of statistical design centering and tolerancing in nonconvex acceptability regions. The approach is based on a point, segment, plane, etc. approximations to R//a. General formulae for estimators of yield and its derivatives are developed, based on the MC sampling in subspaces of R**n, and analytical or numerical integral calculations. Four algorithms utilizing the proposed approach were realized and tested on practical problems.
Authors describe a method which under reasonable assumptions can provide an efficient algorithm for design centering and yield maximization of electroniccircuits. The main restriction concerns the performance functio...
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Authors describe a method which under reasonable assumptions can provide an efficient algorithm for design centering and yield maximization of electroniccircuits. The main restriction concerns the performance functions of the circuit which is assumed to be either quasi-convex or quasi-concave functions. For this case the region of acceptability can be viewed as being the intersection of convex sets with sets whose complements are convex. The proposed algorithm replaces at each iteration these complementary convex sets by half spaces to obtain convex regions of acceptability. The feasibility of the method is illustrated in two examples.
This paper outlines a uniform approach to a broad class of layout design problems namely those in which components of subsystems have to be arranged within a rectangle and to be interconnected by conducting paths in o...
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This paper outlines a uniform approach to a broad class of layout design problems namely those in which components of subsystems have to be arranged within a rectangle and to be interconnected by conducting paths in one or more layers. Besides the concept must be amenable to constraints derived from technological, electronic or economic considerations. The ideas are fully worked out for single layer technologies.
Authors describe a method which under reasonable assumptions can provide an efficient algorithm for design centering and yield maximization of electroniccircuits. The main restriction concerns the performance functio...
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Authors describe a method which under reasonable assumptions can provide an efficient algorithm for design centering and yield maximization of electroniccircuits. The main restriction concerns the performance functions of the circuit which is assumed to be either quasi-convex or quasi-concave functions. For this case the region of acceptability can be viewed as being the intersection of convex sets with sets whose complements are convex. The proposed algorithm replaces at each iteration these complementary convex sets by half spaces to obtain convex regions of acceptability. The feasibility of the method is illustrated in two examples.
This paper outlines a uniform approach to a broad class of layout design problems namely those in which components of subsystems have to be arranged within a rectangle and to be interconnected by conducting paths in o...
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This paper outlines a uniform approach to a broad class of layout design problems namely those in which components of subsystems have to be arranged within a rectangle and to be interconnected by conducting paths in one or more layers. Besides the concept must be amenable to constraints derived from technological, electronic or economic considerations. The ideas are fully worked out for single layer technologies.
With the introduction of the electronic Emissions Control System (ECS) into the automobile has come the requirement to perform diagnostics and fault isolation at a level of sophistication previously unknown to the aut...
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With the introduction of the electronic Emissions Control System (ECS) into the automobile has come the requirement to perform diagnostics and fault isolation at a level of sophistication previously unknown to the automotive service industry. The GM electronic control system is described which includes integral self-test and diagnostic aids. These features were addressed throughout the ECS concept, design and development phases, using the same system engineering techniques applied to achieving control functions. The ECS systems will include fail-operational redundancy and control software, self-test hardware, diagnostic fault isolation and self-test software, and diagnostic service aid software. The effectiveness of these features in the field will be closely monitored through a multi-divisional service structure, and data continually fed back to subsequent systems to achieve the maintainability level required of automotive transportation.
design and performance of an X-band microstrip bipolar varactor-tuned oscillator integrated with an FET amplifier is presented. Wide temperature operation (-55/spl deg/ to 71/spl deg/C), constant high power (0.5 W), l...
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design and performance of an X-band microstrip bipolar varactor-tuned oscillator integrated with an FET amplifier is presented. Wide temperature operation (-55/spl deg/ to 71/spl deg/C), constant high power (0.5 W), low post-tuning drift (0.75 MHz) for 8 percent tuning range, and exceptionally low FM noise (-132 dB/Hz at 1 MHz) is reported.
A 25KW L-Band solid in its output stage has state RADAR transmitter which uses forty high power, parallel modules in its output stage has been developed. The high power techniques which preserve intermodule stability ...
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A 25KW L-Band solid in its output stage has state RADAR transmitter which uses forty high power, parallel modules in its output stage has been developed. The high power techniques which preserve intermodule stability and efficient power combining at this power level are presented. The overall transmitter design approach and resultant characteristics are discussed.
In this paper an attempt is made to combine some well-known concepts into a new approach to solve the biasing problem in electroniccircuitsdesign. Assuming that for a particular circuit various large- and small-sign...
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In this paper an attempt is made to combine some well-known concepts into a new approach to solve the biasing problem in electroniccircuitsdesign. Assuming that for a particular circuit various large- and small-signal DC requirements are specified, and that at the same time there is a set of designable parameters, a way is described to obtain diagnostic information about the feasibility of the design problem as well as a procedure to compute the values of the parameters by a recursive scheme if such a scheme exists.
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