28 Jan
2014
28 Jan
'14
9:49 a.m.
Hi,
Ah cool. Can you point me to papers/text showing how the n-th harmonic is being removed from the spectrum?
N-th harmonic of what?
Of the RF carrier. I guess there will be some harmonics, and I will have a look what my WBX produces if you are interested.
More recent devices are based on flexible integrated RF chips from Analog Devices and Lime Micro that were specifically designed for commercial 3G and 4G systems. I find it hard to believe that these SDR products are not capable of passing international compliance requirements for GSM.
Usually there is even for those low power applications some passband filter in the output path.
Ralph.