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Telecommunications and Radio Engineering
SJR: 0.202 SNIP: 0.2 CiteScore™: 0.23

ISSN 印刷: 0040-2508
ISSN オンライン: 1943-6009

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Telecommunications and Radio Engineering

DOI: 10.1615/TelecomRadEng.v73.i5.10
pages 375-390

TIME-DOMAIN SIMULATION OF POWER COMBINING BY A PARALLEL CONNECTION OF STRIP LINES WITH GUNN DIODES

L. V. Yurchenko
A.Ya. Usikov Institute for Radiophysics and Electronics of the National Academy of Sciences of Ukraine 12, Academician Proskura St., Kharkiv 61085, Ukraine
V. B. Yurchenko
A.Ya. Usikov Institute for Radiophysics and Electronics of the National Academy of Sciences of Ukraine 12, Academician Proskura St., Kharkiv 61085, Ukraine

要約

In radio engineering, the development of compact, high-power radiation sources is impossible without power of individual sources being combined. The GaN Gunn diodes show a good potential for this application. The calculus of systems, requiring power combination, particularly in the time-delay problems, is handicapped by a lack of analysis and computation techniques, despite all evident advances. In this paper, we apply a new approach and our modification of the numerical Dormand-Prince method to perform time-domain calculation for a non-linear power combination in an active structure formed by a parallel connection between extended sections of strip lines and the Gunn diodes, characterized by a substantial feedback time delay. We have observed and explored complex dependences of the output power and oscillation period on the structure parameters. The results confirm the pronounced non-linear nature of the processes, and furnish an explanation to some real-life effects. The efficiency of the model was tested while analyzing an ultra-wideband field dynamics in a highly non-linear structures with a time delay, taking into account the delayed feedback of active devices toward external inputs. It was proven that simplified models are unsuitable for describing oscillations in non-linear, multicomponent active structures with a time delay, which require a direct time-domain calculation.


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