Design and Test of Beidou RF Module Based on JT110

This paper mainly introduces the RF module composed of JT110 and 89C51. JT110 is a highly integrated RNSS multi frequency point dual-mode RF receiver, which supports two channels to work independently at the same time; As the main control chip of the control circuit, 89C51 completes the function of the control circuit through SPI control circuit and programming. The designed circuits including: RF input circuit, clock reference circuit, power supply circuit and so on. In the software part, the PADs is selected to design the circuit schematic diagram and draw the PCB layout, and the test instrument is used to test the phase noise, noise coefficient, input standing wave and other parameters.