Solid-State Amplifier Development at FREIA

Dancila, Dragos; Eriksson, Aleksander; Goryashko, Vitaliy; Haapala, Linus; Ruber, Roger; Rydberg, Anders; Wedberg, Rolf; Yogi, Rutambhara; Ziemann, Volker

doi:10.18429/jacow-ipac2014-wepme012

Cited by 1 publication

(1 citation statement)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Besides the approach we used in this paper to analyze the nonlinear system, we mention for completeness that high power S-parameters are sometimes called hot S-parameters [77], and the nonlinear effects can be fully characterized by the so-called X-parameters measured by the nonlinear VNA [78,79]. However we believe that the present treatment is best suited for understanding the statistical properties of nonlinear wave chaotic systems in the semi-classical regime.…”

Section: Discussion and Future Workmentioning

confidence: 99%

Scattering statistics in nonlinear wave chaotic systems

Zhou

Ott

Antonsen

et al. 2019

Chaos: An Interdisciplinary Journal of Nonlinear Science

View full text Add to dashboard Cite

The Random Coupling Model (RCM) is a statistical approach for studying the scattering properties of linear wave chaotic systems in the semi-classical regime. Its success has been experimentally verified in various over-moded wave settings, including both microwave and acoustic systems. It is of great interest to extend its use to nonlinear systems. This paper studies the impact of a nonlinear port on the measured statistical electromagnetic properties of a ray-chaotic complex enclosure in the short wavelength limit. A Vector Network Analyzer is upgraded with a high power option which enables calibrated scattering (S) parameter measurements up to +43 dBm. By attaching a diode to the excitation antenna, amplitude-dependent S-parameters are observed. We have systematically studied how the key components in the RCM are affected by this nonlinear port, including the radiation impedance, short ray orbit corrections, and statistical properties. By applying the newly developed radiation efficiency extension to the RCM, we find that the diode admittance increases with excitation amplitude. This reduces the amount of power entering the cavity through the port, so that the diode effectively acts as a protection element.

show abstract

Section: Discussion and Future Workmentioning

confidence: 99%