The performance of a cavity-based filter is determined by its geometry. Although these filter structures can be tuned, it can be a challenge to obtain the proper geometric dimensions that allow the tuning elements to attain the desired synthesized response. Simulation software is a valuable tool that can assist with the design of such filters. In the application note, “Cavity-Based Helical Resonator Bandpass Filters Designed With Parameterized Project Template in NI AWR Software,” National Instruments describes the design process for a cavity-based, helical resonator bandpass filter at UHF frequencies...
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