Design of a tunable LNA and its variability analysis through surrogate modeling

Xhafa, Xhesila; Yelten, Mustafa Berke

doi:10.1002/jnm.2724

Cited by 12 publications

(7 citation statements)

References 22 publications

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“…Functional surrogate modeling techniques are functions for predicting the output responses of designs, and are generally applied for modeling the microwave components due to the fast simulation in high-level circuit designs [20][21][22][23][24]. These techniques aim to solve the problems of multi-objective functions lead to finding the optimal responses [25].…”

Section: Functional Surrogate Modelingmentioning

confidence: 99%

Optimization techniques for analog and RF circuit designs: an overview

Kouhalvandi

Ceylan²,

Özoğuz

2020

Analog Integr Circ Sig Process

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Optimizations have gained much consideration from the researchers working in the domains of analog and radio frequency (RF), recently. Dealing with highly nonlinear behavior of active components and aiming to meet design specifications are common issues in all nonlinear circuit designs. As a consequence and accordingly, many studies have been conducted on diverse optimization methods and algorithms for tackling the design problems and meeting optimal solutions with high accuracy. The main purpose of this article is to provide a comprehensive and systematic literature review for the optimization approaches applied by the researchers for designing various analog and microwave circuits. We focus on considering the existing optimization methods from the newly published optimization methods in the last decade. Thus, this study can guide and enlighten complementary metal-oxide-semiconductor analog and RF microwave circuit designers to consider optimization methods commonly used in both areas and to expand conventional performance figures used in their area.

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Section: Functional Surrogate Modelingmentioning

confidence: 99%

Optimization techniques for analog and RF circuit designs: an overview

Kouhalvandi

Ceylan²,

Özoğuz

2020

Analog Integr Circ Sig Process

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“…It should also provide good gain. One of the methods to provide tunablity is by using a MOS varactor in accumulation mode as shown in [1]. In this work, the inductively degenerated CS LNA has been redesign for the application of sub-GHz frequency range i.e., up to 5 GHz.…”

Section: Introductionmentioning

confidence: 99%

A gyrator-C active inductor based tunable low noise amplifier for sub-GHz frequency range

Prashar,

Kapur

2024

Eng. Res. Express

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The propose exhibits a tunable low noise amplifier (LNA), which provides the tunability at sub-GHz frequency range and hence can become choicest frequency range for 5G applications. Common source (CS) with source degeneration inductor LNA is proposed; in which the inductor in source branch is replaced by gyrator-c active inductor which not only reduced the overall area of the circuit but can also be used to provide the feature of tunability by changing the bias voltage of CMOS based active resistor in feedback branch. Therefore, instead of having a LNA circuit for the fixed frequency, a single tunable LNA design can be used over a range of frequency from 1GHz to 5GHz. The proposed approach will provide the direct tuning to the circuit. The forward voltage gain achieved is greater than 10dB, input matching parameter is less than -10dB and the output matching parameter is less than -10dB. The average power dissipated is 0.02W. The results can be tuned by controlling the feedback voltage of tunable active inductor (Tunable_AI). The tunable results can be achieved up to the bandwidth of 1GHz.

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“…Furthermore, the electromagnetic (EM) simulation is very time-consuming when evaluating the candidate design solutions, and it occupies the majority of the time for the whole optimization. For this reason, in some mm-wave ICs synthesis methods, surrogate modeling methods such as gaussian process, 19,20 kriging metamodeling, 21 radial basis function substitution model, 22 artificial neural networks 23 and others [24][25][26][27][28][29] have been proposed to reduce the high computational cost of EM simulation. In these methods, some EM simulations in local search are replaced by building and updating surrogate models.…”

Section: Introductionmentioning

confidence: 99%

An efficient mm‐waveLNAimpedance match synthesis methodology with coordinate descent method

Zhou

Wen

Wang

2023

Int J Numerical Modelling

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In this paper, a novel synthesis methodology for LNA impedance matching is proposed, which consists of two main phases: database generation and parameter optimization. In the former phase, a large‐scale sweep of electromagnetic simulations of passive components is performed to speed up parameter optimization. In the latter phase, the coordinate descent method is used as the optimizer of this methodology. Since frequently dozens of parameters need to be optimized in synthesize LNAs, the coordinate descent method can temporarily fix some parameters in each iteration, thus convert the optimization problem into multiple simple low or even one‐dimensional optimizations, which can eventually obtain high‐quality LNAs quickly in fewer descent iterations. This methodology is applied to a Ka‐band two‐stage differential LNA design using 65 nm CMOS technology, and the synthesis time is only 3 min, which is tens of times faster compared to existing synthesis methods. The proposed LNA circuit is fabricated and the measured results verify the feasibility of the synthesis method.

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Design of a tunable LNA and its variability analysis through surrogate modeling

Cited by 12 publications

References 22 publications

Optimization techniques for analog and RF circuit designs: an overview

Optimization techniques for analog and RF circuit designs: an overview

A gyrator-C active inductor based tunable low noise amplifier for sub-GHz frequency range

An efficient mm‐waveLNAimpedance match synthesis methodology with coordinate descent method

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