Reduction of intermodulation distortions in the input radio receiving circuit

Anatoly M. Bobreshov; L. I. Averina; A. V. Isaev; Grigorii K. Uskov

doi:10.3103/S0735272710120058

Authors

Anatoly M. Bobreshov Voronezh State University, Russian Federation https://orcid.org/0000-0002-5429-3780
L. I. Averina Voronezh State University, Russian Federation
A. V. Isaev Voronezh State University, Russian Federation
Grigorii K. Uskov Voronezh State University, Russian Federation https://orcid.org/0000-0001-8250-2511

DOI:

https://doi.org/10.3103/S0735272710120058

Keywords:

low noise amplifier, double balanced diode mixer, dynamic range, intermodulation, nonlinear distortions

Abstract

A technique for the compensation of the third order intermodulation components in the "low-noise amplifier–double balanced diode mixer" circuit has been considered. This technique is based on the optimization of the LNA transfer ratio and the power of mixer heterodyne. The proposed technique makes it possible to obtain the gain in terms of intermodulation of about 26–31 dB.

References

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L. I. Averina, A. M. Bobreshov and A. V. Hripushin, “Analysis of nonlinear effects and calculation of EMC characteristics of SHF amplifier based on heterojunction bipolar transistor,” Izv. Vyssh. Uchebn. Zaved., Radioelektron. 52(4), 38 (2009) [Radioelectron. Commun. Syst. 52(4), 191 (2009)].