FIELD: signal transmission.
SUBSTANCE: the essence of proposed method of the frequency band division of a transmitted signal consists in the following: 1) the sum of one-band oscillation and its envelope are multiplied indirectly with unequally polar rectangular pulses; 2) the multiplication signal is coherently detected. In this case the frequency band decreases by two times. The device has a transmitted signal source, one-band oscillation shaper, envelope separator, adder of one-band oscillation and its envelope, 90° phase shifter, amplifier-amplitude limiter, differentiating circuit, trigger, member for exclusion of the constant component, signal multiplier, coherent detector and frequency divider by two times.
EFFECT: quality increase and decrease of the frequency band of a transmitted signal without loss of information.
2 cl, 2 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| SPEECH SIGNAL FREQUENCY BAND DIVIDER | 2010 |
|
RU2439795C1 |
| SELECTOR OF SPEECH COMPONENT FROM SPEECH SIGNAL | 2004 |
|
RU2267859C1 |
| METHOD OF TRANSMITTING SPEECH SIGNALS AND DEVICE TO THIS END | 2007 |
|
RU2371783C2 |
| FORMER OF SINGLE-SIDEBAND SIGNALS | 0 |
|
SU1753578A1 |
| SINGLE-SIDEBAND SIGNAL CONDITIONER | 0 |
|
SU1644358A1 |
| SHAPER OF SINGLE-BAND SIGNAL | 0 |
|
SU1506506A1 |
| GENERATOR OF SINGLE-BAND SIGNAL BY PHASE METHOD | 2008 |
|
RU2363091C1 |
| SINGLE-POLE SIGNAL FORMER | 0 |
|
SU1356183A1 |
| DIVIDER OF THE FREQUENCY BAND OF THE SPEECH SIGNAL IN 2 TIMES | 2018 |
|
RU2695988C1 |
| INDICATION DEVICE | 1991 |
|
RU2005994C1 |
