Optimization of RF low noise amplifier design using analytical model and genetic computation

Papadimitriou, Angelos; Bucher, Matthias

doi:10.23919/mixdes.2017.8005220

Cited by 3 publications

(1 citation statement)

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“…A least-squares fitting algorithm has been studied to extract a spiral inductor's equivalent circuit [16], and analysis and simulation of inductors and TFs for integrated circuits (ASITIC) have been studied to design tunable inductors [17], [18]. In addition, a GA has been employed for optimizing the figure of merit (FoM) of low-noise amplifiers [19].…”

Section: Introductionmentioning

confidence: 99%

Neural-Network-Based Automated Synthesis of Transformer Matching Circuits for RF Amplifier Design

Lee

Shin

Lee

et al. 2022

IEEE Trans. Microwave Theory Techn.

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Rich experience and intuition play important roles in designing planar transformers (TFs) for contemporary radio frequency integrated circuits (RFICs). In general, RFIC designers have been heavily relying on multiple iterations of full electromagnetic (EM) simulations, which consumes much time and effort. Here, we propose an automated matching circuit synthesizer (AMCS) using neural networks (NNs). The proposed AMCS directly synthesizes a matching circuit combined with a TF throughout the entire design process, ranging from the desired performance to layout. In the AMCS, which is a "spec-to-layout" synthesizer, one NN returns physical parameters of matching circuits, and another NN estimates the electrical performance in two-port S-parameters from the desired impedances. Before the NNs are trained, input feature design is conducted to avoid the one-to-many problem, which cannot be well characterized with an inverse NN. This significantly reduces the time and effort for iterative circuit and EM simulations. The AMCS generated the matching circuit layouts for simple single-stage amplifiers operating at different frequencies up to 70 GHz or in different bandwidths of up to 32.5%. The estimated S-parameters of the amplifiers show good agreement with the EM simulation results.

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