GPS接收机射频模块的设计

从GPS接收机射频模块的设计要求出发,介绍了一种Maxim公司生产的单片GPS接收机射频前端ICMAX2740在射频模块设计中的典型应用,他具有高集成度、高灵敏度、低功耗、低相位噪声、抗干扰性好的优点且支持高精度输出量化,能够为GPS接收机提供最佳的性能。通过实时卫星跟踪测试,结果表明,由MAX2740配合较少量的外部器件构成的GPS接收机对于一定范围内不同的卫星仰角均具有满意的C/N系数,能实现非常理想的定位。

Design of RF Module Front of GPS Receiver

In this paper,with a view to the design of RF module of GPS receiver,a typical application of MAX2740 GPS receiver single chip IC is introduced,which featuring high integration and sensitivity,low power consumption and phase noise,perfect antijamming,high precision digitizer output is also supported for the best capability of GPS receiver.The satellite track test shows that a GPS receiver composed of MAX2740 and a few exterior components has satisfactory C/N coefficient towards different satellite elevation in a certain scope,so that a perfect orientation comes true.