Automatic frequency adjustment when measuring S-parameters of converters using vector network analyzers produced by Micran JSC

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Abstract

The article describes the algorithm of automatic frequency adjustment for S-parameters measurement of frequency-converting devices with embedded LO. The features of the operation of this algorithm in various measurement schemes are demonstrated. The use
of the given algorithm expands the scope of application of the VNAs produced by Micran JSC, including satellite communication systems.

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About the authors

A. Dimaki

АО «НПФ «Микран»

Author for correspondence.
Email: redactor@electronics.ru

ведущий научный сотрудник

Russian Federation

O. Kravchenko

АО «НПФ «Микран»

Email: redactor@electronics.ru

заместитель директора департамента информационно-измерительных систем

Russian Federation

G. Kun

АО «НПФ «Микран»

Email: redactor@electronics.ru

директор департамента информационно-измерительных систем

Russian Federation

References

  1. Шугаепов Ш. , Ермолаев Е. , Егошин В. , Ахметгалиев Р. , Мазуренко А. Технологическое оборудование и материалы, применяемые для изготовления металлокерамических корпусов // ЭЛЕКТРОНИКА: Наука, Технология, Бизнес. 2022. №5. С. 62–65.
  2. Шугаепов Ш., Ермолаев Е., Егошин В. Особенности производства многовыводных корпусов с использованием тонких керамических лент // ЭЛЕКТРОНИКА: Наука, Технология, Бизнес. 2022. № 6. С. 142–144.
  3. Белинская Г.В., Выдрик Г.А. Технология электровакуумной и радиотехнической керамики – М.: Энергия, 1977. 336 с.
  4. Отчет о научно-исследовательской работе «Стабилизировать и улучшить качество глинозема ГКИС» / Всесоюзный ордена Октябрьской Революции научно-исследовательский и проектный институт алюминиевой, магниевой и электродной промышленности (ВАМИ) // Ленинград, 1986. 132 с.

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2. Fig. 1. The result of measuring the amplitude of the measuring receiver with a "rough" frequency adjustment in Graphite software. A linear sweep of the receiver frequency was performed in the vicinity of the frequency F0 = 2.5 GHz. It can be seen that the detuning of the true IF value from the 2.5 GHz estimate is approximately 100 kHz.

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3. Fig. 2. The result of measuring the phase of the measuring receiver with "precise" frequency adjustment in Graphite software. The CW Mode is running at 2.4999 GHz. The frequency response, calculated by formula (1), is approximately 499 Hz

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4. Fig. 3. View of the "Frequency conversion" panel (a), the window for setting the parameters of automatic tuning (b)

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5. Fig. 4. Measurement scheme of the scalar conversion coefficient of the converter

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6. Fig. 5. Measurement of the S-parameters of the converter with sequential switching on of the reference mixer and the measuring device.

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7. Fig. 6. Measurement of the parameters of the frequency converter device with the inclusion of the mixer in the reference channel of the VAC

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8. Fig. 7. Dependences of the conversion coefficient module of the mixer C21 and the hot water mixer on the frequency. Dashed lines – the heterodyne is synchronized with the VAC, solid lines – the heterodyne is not synchronized with the VAC and is tuned to 12.5 kHz. The grid pitch for the GVZ highway is 100 ps per division. The magnitude of the C21 module is shown in decibels

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Copyright (c) 2024 Dimaki A., Kravchenko O., Kun G.