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A Wideband RF Receiving Front-end Design Based on AD9371

For the shortcomings of the existing software radio frequency receiving front-end band, such as less coverage, low gain and high noise, a wide-band RF receiving front-end circuit based on AD9371 is designed. The frequency band coverage of this circuit is expanded to 10MHz~6000MHz through frequency conversion and its receiving gain is 60dB, the noise figure is lower than 3dB and the intermediate frequency output frequency is 2400MHz. This circuit is designed in following ways: firstly, the main parameters of the design is simulated and analyzed through ADS(Advanced Design System); secondly, the whole RF front-end is packed into a component by SystemVue and combining with the baseband part, a complete integrated system is build; finally, the integrated system is simulated and analyzed. The simulation results show that the expected design goals is achieved in this design.