I am using the ADRF5032 chip, and the PCB material is Rogers 3003G2 with a thickness of 0.13 mm. The microstrip lines are designed using a grounded coplanar waveguide structure, with a microstrip width of 0.227 mm and a ground-to-line gap of 0.255 mm. Full-wave simulation is performed using CST.
Currently, I am using multiple ADRF5032 switches in series, and I plan to test different path delays by measuring the radar echo signal through various microstrip paths. However, both radar and RF testing results seem normal. The switch is powered with VDD = 3.3V, VSS = -3.3V, and CTRL is set to either 0V or 3.3V. But after integrating the design into the PCB, the RF section does not function properly.
My question is: Can the ADRF5032 switches be cascaded as shown in the schematic, and is the circuit design for the ADRF5032 correct? thanks for your feedback
