| 摘要 |
FIELD: digital radio communications; digital data transfer systems. SUBSTANCE: device designed for shaping frequency-keyed signals with minimal frequency shift affording continuity of instant values and first derivative of frequency-keyed signals being generated at boundaries of symbols has synchronizer, converter, master oscillator, scale-of-(2k + 1) frequency divider, where k is natural number, first and second phase shifters, first and second phase keyers, first and second multipliers, and adder. EFFECT: reduced beyond-the-band radiation level. 1 cl, 2 dwg |
