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

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AN369Figure 17. Top Layout of the SI Testcard with SOIC Packaged Si4010The measured spectrum by a 50 spectrum analyzer up to 3.6 GHz is shown in Figure 18. 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 ~+8.4 dBm. Assuming .08 dB loss for the balun and 0.15 dB loss for the filter, the powerdelivered to the differential port of the balun is ~+9.4 dBm. That is, the power goes into a properly designeddifferential antenna input without external matching elements.Figure 18. Measured Spectrum Up to 3.6 GHz18 Rev. 0.1
AN3694.1.3. 434 MHz MSOP Matching BalunThe schematic of the 434 MHz balun with element values for the MSOP packaged Si4010 is shown in Figure 19.This matching is ETSI-compliant. The Si4010 tunes the internal cap. bank to state 19 automatically with thismatching.The top layer of the Silicon Labs testcard is shown in Figure 20. It is recommended to copy and use the RF layoutaround the chip as it is. The gerbers of the board can be found on the Silicon Labs website.Figure 19. Si4010 MSOP Matching Network for 434 MHzRev. 0.1 19
Page 1 and 2: AN369Si4010 ANTENNA I NTERFACE AND
Page 3 and 4: AN369A second important operation m
Page 5 and 6: AN369Figure 4. 4010-DAPB434 Schemat
Page 7 and 8: AN369Figure 5. Si4010-DAPB434 Key F
Page 9 and 10: AN369Figure 8. Antenna Simulation (
Page 11 and 12: AN369enough to accurately estimate
Page 13 and 14: AN369Simulated impedance:The simula
Page 15 and 16: AN3694.1. Matching Baluns for Si401
Page 17: AN3694.1.2. 868MHz SOIC Matching Ba
Page 21 and 22: AN369Figure 21. Measured Spectrum U
Page 23 and 24: AN3694.2. High Q Discrete Matching
Page 25 and 26: AN3691. Calculate the values e.g. f
Page 27 and 28: AN3694.00180.0PHASE3.0090.002.000.0

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

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