S.F. Atkishkin 1

1JSC «Scientific Research Institute «EKRAN» (Samara, Russian)

1 mail@niiekran.ru, p4r4n014c@yandex.ru

This paper is devoted to the model of instantaneous frequency measurement (IFM) receiver with preliminary frequency multiplying based on nonlinear large signal scattering parameters. Equations linking constant voltage proportional to the instantaneous frequency on the detector with the incident waves at the input of the receiver are derived. Parasitic harmonic generation mechanisms are considered and ranked. Means for reducing parasitic harmonics impact on frequency measurement accuracy are proposed. It is showed that balanced frequency doubler cascaded connection is preferable scheme for frequency multiplication in IFM with preliminary frequency multiplication that provides wide frequency bandwidth and low level of odd parasitic harmonics.

The functional scheme and operation theory of the IFM receiver with preliminary multiplication is reported. Analysis and design complexity of IFM receiver with preliminary frequency multiplication is discussed. Various nonlinear modeling techniques are briefly and critically discussed. The nonlinear behavioral model based on LSSP parameters that connects incident (input) scattering waves with scattering waves at the output of the receiver is derived. Frequency measurement error influenced by parasitic harmonics is analyzed. Means for reducing parasitic harmonics influence are proposed and discussed. Preferable frequency multiplication scheme is proposed and discussed.

Atkishkin S.F. Behavioral model of instantaneous frequency measurement receiver with preliminary frequency multiplication based on nonlinear large signal scattering parameters. Radioengineering. 2020. V. 84. № 11(22). P. 37−43. DOI: 10.18127/j00338486-202011(22)-07. (in Russian)

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