Intermodulation in series balanced circuits of field-effect transistor amplifiers

Anatoly M. Bobreshov; Nina N. Mymrikova; V. V. Pogozhev; V. I. Zakharov; Yurii P. Sbitnev

doi:10.3103/S0735272713050038

Authors

Anatoly M. Bobreshov Voronezh State University, Russian Federation https://orcid.org/0000-0002-5429-3780
Nina N. Mymrikova Voronezh State University, Russian Federation
V. V. Pogozhev Voronezh State University, Russian Federation
V. I. Zakharov Voronezh State University, Russian Federation
Yurii P. Sbitnev Voronezh State University, Russian Federation

DOI:

https://doi.org/10.3103/S0735272713050038

Keywords:

intermodulation distortions, interference, compensation, series and balanced structures, inverting and non-inverting stages, field-effect transistor, FET, source, gate

Abstract

Techniques for the reduction of intermodulation distortions at the expense of compensation in broadband multistage amplifiers with p-n junction field-effect transistors have been investigated. Different series and balanced amplifying structures and their combinations were considered; for each amplifier the conditions of compensating the intermodulation products of the second and third orders were obtained. This formed the basis for establishing and implementing the possibility of compensation of input intermodulation interferences in the amplifier with balanced connection of nonlinear stages. The compensation effect was corroborated by experiment.

References

SBITNEV, YU.P.; MYMRIKOVA, N.N.; ZOLOTUKHIN, P.I.; IRKUTSKII, O.A. RF Patent No. 2096909. Byull. Izobret., n.32, 1997.

ALGAZINOV, E.K.; MYMRIKOVA, N.N.; SBITNEV, YU.P. Simulation of input devices with linearized characteristics. Vestnik VGU. Ser. Fizika, Matematika, n.2, p.5-6, 2001.

BOBRESHOV, A.M.; AVERINA, L.I.; ISAEV, A.V.; USKOV, G.K. Reduction of intermodulation distortions in the input radio receiving circuit. Radioelectron. Commun. Syst., v.53, n.12, p.658-662, 2010. doi:10.3103/S0735272710120058.

SBITNEV, YU.P. AND IRKUTSKII, O.A. Compensation of intermodulation distortions of the third order in serial and parallel structures. Radiotekhnika, n.11, p.46-48, 2001.

OPADCHII, YU.F.; GLUDKIN, O.P.; GUROV, A.I. Analog and Digital Electronics: Textbook for the Students of Institutes of Higher Education. Moscow: Goryachaya Liniya–Telekom, 2000. 768 p. [in Russian, ed. by O. P. Gludkin].