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

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AN369Figure 7. Si4010-DAPB434 in the Plastic Enclosure (Top)3.2. Detailed Antenna Design Steps Using a Planar EM Simulator (Sonnet)For the antenna design the Sonnet 2.5D EM simulator is used. The goal is to design the optimum antennaimpedance for the PA which results in the maximum power delivery to the antenna at cap bank state 128. Thereactance of this optimum antenna impedance is resonating with the PA output capacitance at internal capacitancebank state of 128. That is close to the lower edge of the output capacitance tuning range of the 4010 (0...511) inorder to increase the Q factor of the PA and thus decrease the internal losses. A basic EM simulated planarstructure is shown in Figures 8–10.8 Rev. 0.1
AN369Figure 8. Antenna Simulation (Bottom)Figure 9. Antenna Simulation (Top)Rev. 0.1 9
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: AN369Figure 5. Si4010-DAPB434 Key F
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 and 18: AN3694.1.2. 868MHz SOIC Matching Ba
Page 19 and 20: AN3694.1.3. 434 MHz MSOP Matching B
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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