Analysis of Calibration Techniques for RF Device Measurement
When using vector network analyzer to measure the S parameter of microwave RF compo-nents,because the coaxial port of VNA and the port similar to micro-strip of components cannot be measured directly,a fixture is often introduced to realize the transition from coaxial to micros-trip.During this process,the measurement results include errors inherent in the fixture itself,which need to be de-embedding using calibration techniques.The Thru-reflect-line(TRL)is one of the high-precision calibration techniques.In this paper,the 10 MHz-45 GHz TRL calibrators are made in HFSS,including the"top ground"transmission line,the new coplanar waveguide,the substrate inte-grated waveguide,the coplanar waveguide with two layers of media and other different structures.The 1pF capacitance after de-embedding is in good consistency with the ideal capacitance in the full frequency band,and the results are compared.The next step is to simulate a coaxial connector with better performance to improve the de-embedding effect of the experiment and verify the feasibility of TRL calibration components achieving millimeter wave.
TRL calibration technologyMillimeter wave calibration componentPrecision analysis and comparison
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