Re: [Discuss-gnuradio] rrc_filter in generic_mod_demod

[Sean Nowlan]

On 06/12/2013 12:42 PM, Dan CaJacob wrote:

I think the range across which you have acceptable linearity may be somewhat related to the type of signal you are using.  The general recommendation in the past has been to stick below 0.2  The graphs show that you only lose about 7 dBm of total possible power by backing off the digital amplitude to 0.2 max and you get a linear 1 dBm power output increase for every 1 dB gain increase across the entire gain range of the WBX.

By they, it is a bit unrelated, but I also measured -119 dBm for 12 dB SINAD on the RX side with an 8920A specan.

Very Respectfully,

Dan CaJacob

Hi Dan,

Did you perform any measurements of amplitude and/or gain across the freq range of the board? I'd expect it to vary somewhat since it's such a wideband board, but it'd be interesting to learn the relationship.

Thanks,
Sean