DEVICE FOR MODULATING AMPLITUDE AND PHASE OF MULTI-FREQUENCY SIGNALS Russian patent published in 2007 - IPC H03J3/00 H03C3/02 H01P1/00 

FIELD: radio communications, possible use for generating phase-manipulated, amplitude-manipulated, and also amplitude-phase manipulated signals.

SUBSTANCE: device for modulating amplitude and phase of multi-frequency signals contains a course of multi-frequency signals, reactive quadripole, semiconductor diode and a source of low frequency controlling voltage. The quadripole is made in form of arbitrary connection of two reactive dipoles, semiconductor diode is coupled in a longitudinal circuit between the source of bearing signal and the input of quadripole, a source of low frequency controlling signal is coupled in parallel to diode. Resistance multi-frequency signal source is selected to be arbitrary, a load is coupled to the output of the quadripole for passing multi-frequency signals with arbitrary resistances in at a given number of frequencies of interpolation of required frequency characteristics. Dipoles are made of arbitrarily interconnected reactive elements, number of which is selected to be not less than number of given frequencies of interpolation of required amplitude-frequency and phase-frequency characteristics, and parameters of reactive elements are selected from condition of simultaneously ensured required ratios of modules and phase differences of transmission coefficient at given number of frequencies in two states of semiconductor diode, determined by two edge levels of controlling signal.

EFFECT: simultaneously ensured different required changing rules of amplitude and phase of passing signal with extreme characteristics at given number of fixed frequencies when manipulator is coupled between arbitrary resistances and when controlling element is coupled in longitudinal circuit between the source of multi-frequency signals and the quadripole.

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