INTERACTIVE INTERDIGITAL FILTER DESIGN USING MMICAD SOFTWARE

摘要

Successful microwave circuit realization requires flexible circuit analysis tools that allow engineers to prototype, analyze and verify their circuits. Today, available software tools offer standard features such as frequency analysis, tuning and optimization, but are differentiated by their model libraries and special customization capabilities. This article describes the design of inter-digital microstrip filters using the MMICAD Linear Simulator. Interdigital microstrip filters with tapped-line input are compact structures suitable for microwave integrated circuits. Their advantages include low levels of spurious second harmonic passbands and relatively low cost. This article shows how MMICAD can be used for the full filter design cycle, encompassing specification, basic equations, parameter calculations, simulation and optimization. The final design is verified using the Sonnet electromagnetic simulator.