An empirical model of the SBX daughter board output power driven by USRP N210 and GNU radio based software defined radio

In this paper, we propose an empirical model based on Radio Frequency (RF) measurements. The output power is measured sweeping a frequency band from 350 MHz to 4400 MHz of four SBX daughter boards [4]. These daughter boards are connected to a Universal Software Radio Peripheral (USRP) N210. For each carrier frequency, a narrow-band sinusoidal signal is generated by a GNU Radio Software Defined Radio (SDR). The output power at each carrier frequency is measured through a spectrum analyzer. Hence, an empirical model has been obtained to predict the output power in the analyzed frequency band.