A 4-layer PCB with a solid ground plane and thermal vias is recommended. Ensure good thermal conductivity by using a thermal pad and a heat sink if necessary. Refer to the application note AN-1369 for more details.
Use a low noise power supply, decouple the supply lines with capacitors, and use a pi-filter or a common-mode choke to reduce noise. Also, ensure a good ground plane and minimize the length of the signal traces.
The recommended input impedance is 50 ohms, and the output impedance is 200 ohms. Ensure that the input and output traces are impedance-controlled to minimize reflections and signal degradation.
Check the PCB layout for any issues, ensure proper decoupling and grounding, and verify that the input and output impedances are matched. Also, check for any signs of overheating or thermal issues.
Use a high-frequency signal generator, a spectrum analyzer, and a vector network analyzer to characterize the device. Ensure that the equipment is calibrated and has sufficient bandwidth to measure the device's performance.
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