Is it possible to process radio frequencies on a microcontroller?

Question

Electronics

Tell me, is it possible to process radio frequencies (long, medium waves) on RISC 8-33MHz microcontrollers?
And completely programmatically, almost without external analog components (specialized microcircuits)?

Answer 1

No, since you need to perform the Hilbert and Fourier transforms, and they require very large resources. The Fourier transform is implemented in the Pion-DSP receiver, on stm32f407 - a clock frequency of 168 MHz. With Gilbert it is even worse, it can be implemented on FPGA, DSP, or as in SDR receivers on digital elements.

Answer 2

There is an article about SDR receiver on AVR: www.elektor-magazine.com/fileadmin/E-book_AVR_Soft...