Correlating Microwave Measurements between Benchtop and Handheld Analyzers
应用文章
For the first time, technology breakthroughs have enabled high-performance measurement capabilities in a handheld analyzer. High-accuracy microwave measurements of network, spectrum, power and frequency can quickly be made using modern all-in-one analyzers with results that correlate to benchtop instruments often to within hundredths of a dB. For example, Figure 1 shows the S-parameters of a 10 GHz bandpass filter measured using a benchtop Keysight Technologies, Inc. PNA-X vector network analyzer (VNA) overlaid with measurements using a Keysight FieldFox handheld analyzer. As shown on the figure, the measured parameters are nearly identical between the two instruments. Markers are placed in the passband and rejection portions of the response. The relative difference in the S11 markers between the two instruments is less than 0.02 dB. The relative marker difference in S21 is 0.02 dB in the passband and 0.52 dB in the filter skirt at a level of 78 dB down from the peak. For this example, there is excellent correlation between measurements using the high-performance benchtop instrument and the modern all-in-one handheld.