| 摘要 |
A method is disclosed for producing frequency/phase modulation which is relatively inexpensive and in which the band-width is relatively narrow. According to this method information or signals are transformed into pulse periods, these pulse periods which are sent in continuous sequence or impulse times and pauses, or impulse times and pauses which are sent in continuous sequence, are transformed into unipolar or bipolar square-wave impulses with alternating characteristics, by means of an electronic relay, and square-wave impulses are transformed into sinusoidal half periods or periods, by means of filters.
|
