Introduction

RF chips, as the core components of satellite navigation terminals, play a critical role in determining the accuracy, anti-interference ability, and communication reliability of navigation systems. With the comprehensive service and industrialization of China’s Beidou Satellite Navigation System, the efficiency and standardization of RF chip testing have become key factors in the development of the industry chain. In recent years, automation testing technologies for RF chips have matured, offering viable solutions to overcome the traditional challenges of low efficiency and poor consistency in testing.

Challenges in RF Chip Testing and the Role of Automation

RF chip testing faces two major challenges: first, the wide range of testing projects, including gain, noise, linearity, and phase noise; and second, the complex testing process, which demands high standards for instrument control, signal acquisition, and data analysis. Traditional manual testing methods are no longer sufficient to meet the growing demands for high-precision, high-volume testing as RF chip integration increases and application scenarios diversify.

In this context, building a standardized, scalable RF chip automation testing platform has become a crucial foundation for promoting RF chip industrialization and supporting the large-scale application of Beidou terminals.

Optimized Automation Testing Platform for RF Chips

To meet the testing requirements of satellite navigation RF chips, researchers have designed an automation testing platform based on openness, flexibility, and scalability principles. This system integrates standard instruments such as signal generators, spectrum analyzers, and vector network analyzers, linking them through programmable power supplies, test fixtures, and communication networks. Software controls the automation of the testing process.

The core feature of this testing platform is its “test template” mechanism. Users can easily edit test items and parameters based on the requirements of different RF chips. The system then automatically completes the entire process—from signal excitation and data acquisition to result analysis—significantly improving both testing efficiency and consistency. For instance, when measuring the input third-order intercept point (IP3), the system can precisely control the dual-frequency signal input, automatically measure intermediate frequency output and intermodulation signal power, and calculate linearity indicators based on formulas, all without manual intervention.

Experiment Results and Standardization of RF Chip Testing

To verify the practicality of this automated testing system, the research team conducted comprehensive tests on the RX3701 RF chip, which supports multi-system operations like Beidou and GPS. They tested eight key indicators, including input third-order intermodulation, gain range, noise figure, and out-of-band suppression. The results demonstrated that all tested items met the preset criteria, with some performance even exceeding the design requirements. This confirmed the reliability of the automated testing system for high-precision and high-repeatability tasks.

This achievement not only showcases the maturity of RF chip automation testing technology but also provides the industry with reusable testing methods and standardized processes. It holds significant importance for promoting the standardization and quality improvement of China’s satellite navigation RF chips.

Conclusion: Empowering RF Chips with Automation Testing to Build a Strong Foundation for Beidou’s Future

As the “front-end sensor” of navigation systems, the performance testing of RF chips through automation and standardization is crucial for ensuring the reliable operation and large-scale deployment of terminal devices. As the application scenarios for Beidou continue to expand—from in-vehicle navigation to low-altitude communications, precision agriculture to emergency rescue—the demand for RF chip testing will continue to grow. The promotion and application of automation testing platforms will strongly support China’s RF chip industry in transitioning from “self-controlled” to “high-quality output,” laying a solid foundation for the development of a secure and reliable satellite navigation ecosystem.