AN APPLIANCE, PROCEDURE AND MANUFACTURING ARTICLE FOR THE COMPENSATION OF THE CARRIER FREQUENCY IN A MODULATED FREQUENCY RADIO.

摘要

A PROCEDURE, APPLIANCE AND MANUFACTURING ARTICLE ARE EXPOSED TO COMPENSATE THE ERROR OF THE CARRIER FREQUENCIES. THE FM SIGNAL IS RECEIVED FROM AN ANTENNA AND THE RECEIVED FM SIGNAL IS SUPPLIED TO A RECEIVER. THE RECEIVER ACQUIRES THE FM SIGNAL AT THE FREQUENCY OF THE CARRIER AND GIVES OUT A SIGNAL IN BASE BAND. THIS SIGNAL IN BASE BAND IS PROCESSED THROUGH A DSP THAT PROVIDES THE COMPENSATION AND DECODIFICATION OF THE CARRIER FREQUENCY, TO GENERATE A FLOW OF DATA THAT A MICROPROCESSOR SUPPLIES TO AN ASSOCIATED DEVICE. THE FREQUENCY DIFFERENCES BETWEEN THE FREQUENCY OF THE FM CARRIER AND THE FREQUENCY USED TO DEMODULATE THE FM SIGNAL CAN MAKE THE CC POLARIZATION LEVEL OF THE SIGNAL IN BASE BAND. THE DSP COMPENSES SUCH FREQUENCY DIFFERENCE THROUGH THE USE OF A RECEPTION COMPENSATION VALUE, AND APPLYING IT TO EACH SAMPLE OF THE RECEIVED SIGNAL. WHEN TRANSMITTING, THE DATA TO BE TRANSMITTED IS PROVIDED FROM THE DEVICE ASSOCIATED WITH THE DSP THROUGH A MICROPROCESSOR. THE DSP PROVIDES THE CODING AND COMPENSATION OF THE DATA CARRIER FREQUENCY TO PROVIDE A BASE BAND SIGNAL TO A TRANSMITTER, THAT MODULATES THE BASE BAND SIGNAL TO GENERATE AN FM SIGNAL TO A DESIRED CARRIER FREQUENCY. FREQUENCY DIFFERENCES BETWEEN THE DESIRED FM CARRIER FREQUENCY AND THE FREQUENCY USED TO MODULATE THE SIGNAL IN BASE BAND, CAN GENERATE ERRORS IN THE RECEIVER SYSTEMS. THE DSP COMPENSES SUCH DIFFERENCE OF THE FREQUENCY BY USING A TRANSMISSION COMPENSATION VALUE, AND APPLYING IT TO EACH SAMPLE OF THE CODED SIGNAL.