Re: [Discuss-gnuradio] TX-POWER USRP N210 AND WBX DOUGHTERBOARD

[Martin Braun]

Simone,

the actual tx power depends on a lot of parameters, and it is not a
simple setting. For one thing, it depends a lot on the actual signal you
are generating. If you need a very specific output power, you need to
calibrate your setup with a tool such as a spectrum analyzer.

In general, the 100 mW (or 20 dBm) is the max possible tx power. The
gain will reduce that. Obviously, the noise figure is not relevant for Tx.

M

On 07/22/2014 10:13 AM, Simone Ciccia S210664 wrote:
> Hi at all,
> 
> I have problem to understand how an USRP used as a trasmitter works in term
> of transmitted power when we fix a tx_gain.
> 
> Let me explain better: 
> - The WBX Daughterboard is a wide bandwidth transceiver that provides up to
> 100 mW of output power and a noise figure of 5 dB. (extracted from manual)
> - UHD USRP SINK block (in gnuradio) allows to set the tx_gain(dB)
> 
> Which is the relation between these parameters???
> If I want to set a specific transmitted power???
> 
> Thanks in advance,
> 
> _______________________________________
> Ing. Simone Ciccia, PhD Student
> Antenna and EMC Lab (LACE),
> Politecnico di Torino,
> C.so Duca degli Abruzzi 24, 10129 Torino, Italy
> 
> address@hidden
> 
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