Electronic circuit design using multiobjective optimization

Michal, Jan; Dobeš, Josef

doi:10.1109/mwscas.2007.4488683

Cited by 3 publications

(1 citation statement)

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“…A detailed mathematical proof of the asymptotically uniform coverage of the Pareto front can be found in [12]; results in Fig. 6 can serve as a natural illustration.…”

Section: Proposed Methods For a Uniform Coverage Of The Pareto Frontmentioning

confidence: 99%

Multi-objective optimization of a low-noise antenna amplifier for multi-constellation satellite-navigation receivers

Dobeš

Michal

Popp

et al. 2015

2015 28th IEEE International System-on-Chip Conference (SOCC)

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Although the major parts of function blocks for the satellite navigation receivers are fully integrated in a CMOS chip in most cases, it is convenient to create an antenna preamplifier as a separate circuit based on a low-noise pHEMT. Such an RF front end can be strongly optimized to attain a trade-off between the noise figure and transducer power gain. Furthermore, as all the principal navigation systems (GPS, GLONASS, Galileo, and Compass) work in similar frequency band (roughly from 1.1 to 1.7 GHz), it is reasonable to create this low-noise preamplifier for all of them. In the paper, a sophisticated method of the amplifier design is suggested based on multi-objective optimization. First, an extraction of pHEMT model parameters was performed, including comparisons among several models. The extraction was carried out by our original three-step robust identification procedure based on a combination of meta-heuristic and direct optimization methods. Second, a substantial improvement of a standard method for the multi-objective optimization is outlined. Third, the equations of passive elements of the circuit (including transmission lines and T splitters) were carefully defined using frequency dispersion of their parameters as Q, ESR, etc. Fourth, an optimal selection of the amplifier operating point and essential passive elements was performed using the previously improved goal attainment method. Finally, the sparameters and noise figure of the proposed preamplifier were measured, and the third-order intermodulation products were also checked.

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“…A detailed mathematical proof of the asymptotically uniform coverage of the Pareto front can be found in [12]; results in Fig. 6 can serve as a natural illustration.…”

Section: Proposed Methods For a Uniform Coverage Of The Pareto Frontmentioning

confidence: 99%