| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To generate a pulse signal amplitude-controllable in the rising and falling of an output signal smoothly in a very short time (for example, within 1 micro second), restraining a spurious and a range side lobe, and reducing delay and distortion. <P>SOLUTION: The amplitude-controlled signal is obtained with a plurality of compositions, by weighting a signal of a digital synthesizer with a frequency different symmetrically in an upper sideω+Ωand an under sideω-Ωwith respect to the center frequencyωas the center frequency, and having a fixed amplitude, with the center frequency, an upper frequency and a lower frequency. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
