Nonlinear Embedding and De-embedding

Raffo, Antonio; Vadalà, Valeria; Vannini, G.

doi:10.1016/b978-0-12-401700-9.00009-4

Cited by 3 publications

(3 citation statements)

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“…It can be noted that, as the quiescent bias point shifts to large drain-source voltages, the knee voltage increases, and the drain-source current decreases. These phenomena, reported by P. Tasker [31] and A. Raffo [33,34], are produced by traps and are known as knee walkout and current collapse, respectively. Figure 20 shows the load-lines measured for a SiC MESFET biased as Class-B mode at four different drain-source voltages.…”

Section: Resultsmentioning

confidence: 99%

“…Two methods are used to identify these waveforms: from simulations using CAD tools [30] or from large-signal measurements [31][32][33][34]. In order to study the behavior of a power amplifier using CAD tools, nonlinear transistor models are required; thus, the capabilities of the transistor model to represent the device large-signal behavior heavily impacts the accuracy of this method [35].…”

Section: Low-frequency Active Harmonic Load-pull: An Experimental Stu...mentioning

confidence: 99%

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Advances in Microwave Large-Signal Metrology: From Vector-Receiver Load-Pull to Vector Signal Network Analyzer and Time-Domain Load-Pull Implementations (Invited Paper)

et al. 2022

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Radiofrequency (RF) power amplifiers (PAs) are important elements of modern communication systems. The most important components in PAs are the transistors, which are operated under large-signal regimes in such applications. Designing and optimizing PAs are challenging tasks that demand the highest accuracy on large-signal measurements at both device and circuit levels. Large-signal power transistor characterization demands the development and utilization of high-frequency and low-frequency load-pull systems. Furthermore, the static and dynamic characterization of two-input PAs requires the development of new measurement systems that consist of an nonlinear vector network analyzer (NVNA) and an arbitrary waveform generators (AWG). This paper reviews the research activities, achievements, and current research goals at CICESE Research Center in Mexico in the large-signal microwave metrology field.

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Section: Resultsmentioning

confidence: 99%

Section: Low-frequency Active Harmonic Load-pull: An Experimental Stu...mentioning

confidence: 99%

Advances in Microwave Large-Signal Metrology: From Vector-Receiver Load-Pull to Vector Signal Network Analyzer and Time-Domain Load-Pull Implementations (Invited Paper)

et al. 2022

View full text Add to dashboard Cite

show abstract

“…This technique has been successfully applied to the design of class-E [16] and class-F [17], [18] amplifiers. Detail embedding/de-embedding methods circumventing low-frequency dispersions were reported in [19]- [22]. In these methods, the intrinsic operation mode is established by means of low-frequency measurements.…”

Section: Introductionmentioning

confidence: 99%