AN369: Si4010 Antenna Interface and Matching Network ... - wless.ru

AN369Figure 20. Top Layout of the SL Testcard with MSOP Packaged Si4010The measured spectrum by a 50 spectrum analyzer up to 3.6 GHz is shown in Figure 21. The realized matchinghas ETSI compliance in this conductive measurement. Assuming 0 dB gain antenna the compliance reserved inradiated measurements as well.The fundamental power is ~+9.7 dBm. Assuming 1.0 dB loss for the balun and 0.1 dB loss for the filter, the powerdelivered to the differential port of the balun is ~+10.8 dBm. That is, the power goes into a properly designeddifferential antenna input without external matching elements.20 Rev. 0.1