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Národní úložiště šedé literatury Nalezeno 2 záznamů.  Hledání trvalo 0.01 vteřin. 
SDR based Shortwave Receiver
 Karetka, Gregor ; Maršálek, Roman (oponent) ; Waldecker, Miroslav (vedoucí práce)
This thesis proposes shortwave radio receiver integrated as part of SDR. The objective is to design, simulate and implement RF front-end. Whole device is going to be stack-able on top of Red Pitaya which is capable of receiving DRM broadcast. Final design choice was to implement dual-conversion mixing as it presents advantages such as good image rejection, selectivity and being able to receive signals ranging from short waves up to very high frequencies. Thesis includes system design (schematics of individual blocks) and its simulations which were used to determine theoretical parameters (gain, sensitivity, SNR etc.). Important parameters were measured on assembled PCB. QPSK demodulator was implemented with Red Pitaya system using Matlab.
Úplný záznam
SDR based Shortwave Receiver
 Karetka, Gregor ; Maršálek, Roman (oponent) ; Waldecker, Miroslav (vedoucí práce)
This thesis proposes shortwave radio receiver integrated as part of SDR. The objective is to design, simulate and implement RF front-end. Whole device is going to be stack-able on top of Red Pitaya which is capable of receiving DRM broadcast. Final design choice was to implement dual-conversion mixing as it presents advantages such as good image rejection, selectivity and being able to receive signals ranging from short waves up to very high frequencies. Thesis includes system design (schematics of individual blocks) and its simulations which were used to determine theoretical parameters (gain, sensitivity, SNR etc.). Important parameters were measured on assembled PCB. QPSK demodulator was implemented with Red Pitaya system using Matlab.
Úplný záznam

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