[USRP-users] Output power of E310
james.humphries at ettus.com
Fri Mar 11 10:57:33 EST 2016
Which antenna port are you using? And you are setting the center freq with
the --freq option?
On Fri, Mar 11, 2016 at 6:08 AM, Claudio Cicconetti via USRP-users <
usrp-users at lists.ettus.com> wrote:
> Dear all,
> We are working on a testbed for satellite communication where the
> transmitter is an Ettus E310. Since we are dealing with the link budget,
> we need to understand the maximum power that we can achieve.
> We have run a few experiments to gather a rough order of magnitude using
> the tx_waveforms example (with --ampl 0.7 and --gain 89.8) and measuring
> the output power with a spectrum analyzer.
> We have found the following results:
> 70 MHz -> -6 dBm
> 1.5 GHz -> -17 dBm
> 3 GHz -> 10 dBm <<< as per datasheet
> 6 GHz -> 4 dBm
> The sample rate does not seem to play a role in the experiments.
> Do these results make sense to you? For instance, we would have expected
> to have a monotone relationship between frequency and power...
> More important: since our application is expected to work at 1.5 GHz
> (which accidentally achieves minimum output in our experiments) is there
> any way to increase the output power in that frequency range?
> Best regards,
> Claudio Cicconetti, PhD
> Software Engineer - MBI S.r.l. - Pisa, Italy
> USRP-users mailing list
> USRP-users at lists.ettus.com
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