DDS (direct digital synthesis) type ultra-wide band frequency-modulated signal generating circuit and method
A frequency modulation signal and generation method technology, applied in the direction of electrical components, automatic power control, etc., can solve the problem that the output signal frequency is not high enough, and achieve the effect of high resolution
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[0023] A kind of DDS directly forms ultra-wideband FM signal generation circuit and method, it is characterized in that: such as Figure II Shown is a block diagram of the structure of the system, the system is mainly composed of clock input, phase-locked source, ultra-wideband DDS, waveform parameter control, amplification filter and frequency mixing filter. The input terminal of the clock input is connected with the external clock, one output terminal is connected with the reference clock terminal of the phase-locked source, and one is connected with the clock input terminal of the waveform parameter control circuit. The system clock output terminal of the phase-locked source is connected with the system clock input terminal of the ultra-wideband DDS. The control signal output terminal of the waveform parameter control circuit is connected with the control signal input terminal of the ultra-wideband DDS. The waveform output terminal of the ultra-wideband DDS is connected to...
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