Multi-objective optimization of radio-frequency front-ends

Abstract

This paper proposes an enhancement of a standard method for the multi-objective optimization known as GAM (Goal Attainment Method). In our modification, the GAM algorithm is combined with a procedure that automatically provides a set of parameters (weights, coordinates of the reference point) for which the method generates non-inferior solutions uniformly spread over a suitably selected part of the Pareto front. The resulting set of the solutions is then presented in a convenient graphic form so that the solution representing the most satisfactory trade-off can easily be chosen. The whole algorithm was implemented as a program and tested on various circuit design examples. A typical one was a four-dimensional multi-objective optimization of an RF video front-end. Therefore, this task is thoroughly described in the paper as a representative demonstration of the capability of the program, including a sophisticated quasi four-dimensional graphic for selecting the trade-off. Moreover, a comparison of our modification with WSM (Weighted Sum Method) is also performed.

Parallelized A Posteriori Multiobjective Optimization in RF Design

“…: Equations ( 1)-( 7) represent only a very brief description of our method. We already defined more comprehensive descriptions in [25][26][27], e.g., where certain comparisons with more other methods such as weighted Sum strategy, genetic, Nelder-Mead simplex, and simulated annealing algorithms were performed. However, as the main focus of this paper is devoted to the parallelization technique, we will not repeat such definitions and comparisons here, but we will thoroughly elaborate on the parallelization strategy instead.…”

“…We thoroughly tested the algorithm on analyses in frequency domain as well [25][26][27], including two-, three-, and even four-dimensional examples. However, it should be stated that the computations in the frequency domain are (much) simpler than those in the time domain.…”

Methodology of problem-based learning engineering and technology and of its implementation with modern computer resources

“…According to the methodology presented in the article "A Circuit Grammar For Operational Amplifier Design" [5], it is important to develop an understanding of the concept of development and work with both analog and electronic circuits. They imply in themselves as both valuation techniques (Octagon criteria [6,7], Pareto optimization [8]) and designing (analysis-by-synthesis, restructuring of individual elements of the windows-improvement schemes, architectural method). The article Reengineering Engineering-Education: Paradigms and Paradoxes by the author Diran Apelian [9] provides engineering education and its aspects of the history, social sphere and many others for consideration.…”