Optimal Design of RF Integrated Inductors via Differential Evolution Algorithm

Elhajjami, Imad; Benhala, Bachir; Bouyghf, Hamid

doi:10.1109/iraset48871.2020.9092097

Cited by 10 publications

(7 citation statements)

References 16 publications

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“…The ABSIF software is based on: analytical expressions for low frequency inductanc calculations, based on the current sheet method [21][22][23][24][25][26][27]; analytical expressions for electr cal parameters and for high frequency were set up by the authors using the π equivalen electrical circuit method. This method implies the use of π models with concentrated pa rameters for each side of the spiral inductor [28][29][30][31][32][33][34]. For example, a square inductor wit N turns has 4N sides; each turn is formed of four lines and a π equivalent circuit wit concentrated parameters, such as the one represented in Figure 1.…”

Section: High Frequency Analysis Of Spiral Inductors By Means Of Absif Softwarementioning

confidence: 99%

High Frequency Analysis and Optimization of Planar Spiral Inductors Used in Microelectronic Circuits

et al. 2021

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This paper deals with high frequency analysis of spiral inductors, used in microelectronics circuits, to optimize their configuration. Software developed, designed, and implemented by the authors for nano and micrometre spiral inductor high frequency analysis, named ABSIF, is presented in this paper. ABSIF determines the inductance, quality factor, and electrical parameters for square, hexagonal, octagonal, and circular spiral inductors and their configuration optimization for energy efficiency. ABSIF is a good tool for spiral inductor design optimization in high frequency applications and takes into account the imposed technological limits and/or the designers’ constraints. A set of spiral inductors are considered and analysed for high frequency values using ABSIF, and the results are presented in the paper. The validation of ABSIF was completed by comparing the results with those obtained using a similar commercial software, Sonnet LiteTM, which is dedicated to high frequency electromagnetic analysis.

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Section: High Frequency Analysis Of Spiral Inductors By Means Of Absif Softwarementioning

confidence: 99%

High Frequency Analysis and Optimization of Planar Spiral Inductors Used in Microelectronic Circuits

et al. 2021

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“…The usefulness of the DE algorithm in sizing CMOS integrated circuits has been proved in [38][39][40]. Algorithm 1 describes its adaptation to maximize the oscillation frequency of the ring VCO shown in Figure 2.…”

Section: Problem Formulation For the Optimization Of The Vco By Apply...mentioning

confidence: 99%

Single-Objective Optimization of a CMOS VCO Considering PVT and Monte Carlo Simulations

Castañeda-Aviña

Tlelo‐Cuautle

Fraga

2020

MCA

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The optimization of analog integrated circuits requires to take into account a number of considerations and trade-offs that are specific to each circuit, meaning that each case of design may be subject to different constraints to accomplish target specifications. This paper shows the single-objective optimization of a complementary metal-oxide-semiconductor (CMOS) four-stage voltage-controlled oscillator (VCO) to maximize the oscillation frequency. The stages are designed by using CMOS current-mode logic or differential pairs and are connected in a ring structure. The optimization is performed by applying differential evolution (DE) algorithm, in which the design variables are the control voltage and the transistors’ widths and lengths. The objective is maximizing the oscillation frequency under the constraints so that the CMOS VCO be robust to Monte Carlo simulations and to process-voltage-temperature (PVT) variations. The optimization results show that DE provides feasible solutions oscillating at 5 GHz with a wide control voltage range and robust to both Monte Carlo and PVT analyses.

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“…Due to the induced eddy current, the net current distribution on the metal strip concentrates on the inner edge of the strip and, thus, increases the metal resistance. To mitigate the influence of the eddy current, inductor designs with variable line widths and/or line spacing layouts have been presented [14][15][16][17][18][19][20][21][22][23][24][25]. Figure 1 shows the layout of a spiral inductor with a variable line width design.…”

Section: Introductionmentioning

confidence: 99%

Analytic Design of on-Chip Spiral Inductor with Variable Line Width

Chen¹,

Hsu²

2022

Electronics

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On-chip spiral inductors with variable line width layouts are known for their high quality factor (Q-factor). In this paper, we present an analytical approach to facilitate the design of such inductors. Based on an analysis of ohmic and eddy-current losses, we first derive an analytical formula for the metal resistance calculation of a spiral inductor. By minimizing the metal resistance, a simple design equation for finding the proper line width of each coil is then presented. Several 0.18 μm CMOS spiral inductors are investigated, via electromagnetic simulations and experimental studies, to test the proposed resistance calculation, as well as the variable line width design method. It is found that the developed resistance calculation can effectively model the metal-line resistance of a spiral inductor. Moreover, the inductor with a variable line width obtained using the proposed method can significantly improve the Q-factor with little compromise to inductance, which validates the capacity of the developed variable line width design technique. Since the proposed approach can be carried out using analytical calculations, it may be a more efficient design method than those previously reported in the literature.

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Optimal Design of RF Integrated Inductors via Differential Evolution Algorithm

Cited by 10 publications

References 16 publications

High Frequency Analysis and Optimization of Planar Spiral Inductors Used in Microelectronic Circuits

High Frequency Analysis and Optimization of Planar Spiral Inductors Used in Microelectronic Circuits

Single-Objective Optimization of a CMOS VCO Considering PVT and Monte Carlo Simulations

Analytic Design of on-Chip Spiral Inductor with Variable Line Width

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