FREQUENCY-MODULATED DIGITAL FREQUENCY SYNTHESIZER

摘要

the invention u043eu0442u043du043eu0441u0438u0442u0441u00a0 to radio engineering. the purpose of u0438u0437u043eu0431u0440u0435u0442u0435u043du0438u00a0 the frequency distortion of an output signal. digital frequency synthesizer with frequency u043cu043eu0434u0443u043bu00a0u0446u0438u0435u0439 contains the generator 1. the frequency divider 2 with a fixed rate of u0434u0435u043bu0435u043du0438u00a0, first phase detector 3, a low pass filter 4, u0443u043fu0440u0430u0432u043bu00a0u0435u043cu044bu0439 generator 5.the frequency divider 6 with variable coefficient u0434u0435u043bu0435u043du0438u00a0, block installation 7, frequency, phase u043cu043eu0434u0443u043bu00a0u0442u043eu0440 8, 9 u043cu043eu0434u0443u043bu0438u0440u0443u044eu0449u0435u0433u043e source signal, a second phase detector 10. the key 11, a high pass filter (u0444u0432u0447) 12, an amplifier 13, the u0441u0438u043du0445u0440u043eu043du0438u0437u043cu0430 element 14, 15 or 16, u043eu0434u043du043eu0432u0438u0431u0440u0430u0442u043eu0440. phase u043cu043eu0434u0443u043bu00a0u0442u043eu0440 8 included in the circuit of automatic adjustment voltage phases.what u043fu043eu0437u0432u043eu043bu00a0u0435u0442 stabilize phase of the output signal of the u043cu043eu0434u0443u043bu0438u0440u0443u044eu0449u0438u0445 perturbations in the frequency band u0444u0432u0447 12 is u043fu043eu0437u0432u043eu043bu00a0u0435u0442 earn u0438u0437u043cu0435u043du0435u043du0438u00a0 frequencies s u0443u043fu0440u0430u0432u043bu00a0u0435u043cu043eu0433u043e generator 5 from the lowest to the frequency of the u0444u0432u0447 12. 1 or (l g