I am planning to implement a small software-defined radio with a
of say 50-300 MHz at first. The system should be able to receive AM, FM,
signals over the mentioned RF spectrum with upto 10MHZ baseband
This would require an IF of at least around 11-12MHz. Can u ppl help me
choosing an appropriate RF front-end design for the hardware system?
I am facing a problem in selecting the right analog down-conversion
design which would possess a good IMRR, sufficient linearity and an
acceptable SNR over the desired bandwidth. If I am to tune my radio
the software, which I want to, I’ll have to set dynamic filter
characteristics to the RF amplifier stage(before mixing) to facilitate
rejection. Can a superheterodyne down-conversion serve my requirement??
not, what kind of receiver system should I use…? Is Direct-Conversion
technique implementable in my case? Please share your knowledge on these
I basically want a 10MHz IF for being able to receive Cable TV signals
well. Of course this will be quiet complicated but I will try to doing
With that I may try touching ISM bands later at some pt when I have the
Waiting for your response.