Theoretical Study Of RF2.4G PA Peripheral Circuit Analysis And Application

With the development of the design and manufactuirng process,2.4GHz power amplifier(PA)peirpheral circuit network quality is particularly important. The stability of power supply, highefficiency and low noise, the output filter circuit, impedance matching circuit and the actual productionof the microstirp line design, will affect the signal integrity of low interference transmission. In additionto the integrated circuit and PCB once completed, in the actual assembly itself has not been possible tomake changes, but as the auxiliary parts RLC parts can be easily adjusted accordingly, to achieve theoptimization goal in the spectral lfatness, EVM etc.. Especially in the RF field, the factors affecting thevairous aspects from product assembly production, many are immeasurable and prediction, thepeirpheral circuit parameters adjustment of the, is the indispensable part in the design process.The output spectral flatness is good or bad, directly affects the performance of communicationchannel. For the channel power flatness limit standard, power of each sub carrier to between standard,and if the power of subcarriers is too large，the power spectrum of uneven will affect the connectionproperties. In band spectrum is not flat, irpple changes greatly, causing the fluctuation of output power,so will cause the whole RF system instability. The cause of spectral flatness quality is multifaceted,signal reflection，all parts does not match the impedance of the part itself, the flatness of the clock signalrfom the frequency interference, the interference of power supply and so on，are likely to affect thequality of the output spectrum flatness.The theory of2AG PA peirpheral circuit of the theoretical analysis and application research,summed up the impact of the flatness of output spectrum, improve the test case and the engineeirngdesign of wireless network, provide the basis for future.