| 摘要 |
FIELD: radio engineering. ^ SUBSTANCE: invention can be used for shaping of phase-shift keyed, amplitude-shift keyed and amplitude-phase-shift keyed signals. Modulator contains high-frequency signal source, uncontrolled section designed as reactive four-pole network, controlled section parallel to low-frequency control signal source, load for multiple frequency line signal with random impedances at three intended frequencies. Controlled section is executed in the form of three-polar controlled element; reactive four-pole network is executed in the form of symmetric T-shaped connection of three reactive two-pole networks. Two-pole networks of reactance X1k, X2k, X3k of symmetric T-shaped connection are executed from series circuit Ln, Cn, parallel to inductance L0n. Reactances of two-pole networks on each of three intended frequencies omegak are chosen by mathematical expressions from formula of invention. ^ EFFECT: provided amplitude and phase manipulation and line signal amplitude amplification within specified number of fixed frequencies with manipulator switched between random resistances. ^ 4 dwg |
