![]() This may seem pretty straightforward, but it’s actually one of the most crucial steps. Once you have obtained the receiver, you will need an antenna and a place to put it. Those pre-process the signal for the digital components. For that reason, real SDR receivers use some hardware components, most commonly wide-band, low-noise amplifiers and band-pass filters. The main obstacle is the analog-to-digital converters turns out it is pretty hard to design a converter that can convert quickly and accurately enough, even signals at nanovolt level. ![]() Unfortunately, we don’t live in an ideal world. ![]() You could just hook up the antenna to the converter, feed the output to the signal processor, and voila you can process the data stream in a computer. In an ideal world, Software-Defined Radio (SDR) would require only three hardware components: antenna, analog-to-digital converter, and a digital signal processor. ![]()
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