高性能低成本可调带通滤波器的设计高性能低成本可调带通滤波器的设计 Design and Optimization of Low Cost Tunable VHF PBF Stefano Biagiotti, Giancarlo Guida, Alain Michel Ansoft Corp. Overview Short description of previous generation filter designs Electrical performances, technology, highlights - lowlights New performances, cost reduction, reproducibility Filter synthesis Filter enhancement Implementation Tuning range verification Sensitivity analysis NL analysis Statistical analysis EM analysis HFSS + DESIGNER Completion of the circuit Benefits Conclusions Old Filter: Physical Implementation Filter to redesign Resistive TRIMMERS Capacitive TRIMMERS PCB with 16 diodes mounted by hand Handmade coil (Ag. 2mm) Old Filter: Electrical Performance (for Each Stage) Frequency range Bandwidth Insertion Loss……