Elektor Sdr Software For Mac
SDR receiver Interesting links Some interesting links on digital signal processing and software defined radio:. Short description The implementation of the SDR receiver is quite straightforward:. An antenna is connected to one of the high-impedance analog inputs. The on-board ADC (125 MS/s sampling frequency, 14-bit resolution) digitizes the RF signal from the antenna.
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Elektor Sdr Software For Mac Free
The data coming from the ADC is processed by a in-phase/quadrature (I/Q) digital down-converter (DDC) running on the Red Pitaya’s FPGA. The I/Q data is transmitted via TCP to the SDR programs such as SDR# and HDSDR. The tunable frequency range covers from 0 Hz to 50 MHz. The I/Q data rate is configurable and four settings are available: 50, 100, 250 and 500 kSPS. Digital down-converter The basic blocks of the digital down-converter (DDC) are shown on the following diagram: The in-phase/quadrature (I/Q) demodulator is implemented using the. Is used to decrease the data rate by a configurable factor within the range from 125 to 1250.
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Compensates for the drop in the CIC frequency response, filters out high frequencies and reduces the data rate by a factor of two. FIR filter coefficients are calculated with the following code in: library ( signal ) # CIC filter parameters R.