Design and Implementation of RF Front-End for GPS Receiver Utilizing Discrete Components

Abstract:

A GPS radio frequency (RF) front-end based on discrete components is designed and implemented in this paper. Research on the structures of RF front-ends for GPS receivers, and an intermediate frequency (IF) digitalization front-end is expounded in details. Analyze the design considerations of filter bandwidth, sampling frequency, quantization bits, and automatic gain control, which would effect on the whole performance of RF front-end. Then, appropriate discrete components are selected, and a low IF RF front-end hardware platform with orthogonal structure is implemented. Test results indicate that the hardware platform combined with base-band module could effectively complete signals acquisition.

• Periodical: Applied Mechanics and Materials (Volumes 44-47)
• Pages: 1330-1334
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.44-47.1330
• Online since: December 2010
• Authors: Ji Cheng Ding, Lin Zhao, Shuai He Gao, Li Xiong Xia, Jun Ling Zhang
• Keywords: Automatic Gain Control (AGC), Bandpass Sampling, Bandwidth (BW), Quantization Bit, RF Front-End

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