Design Lumped Element Filter
After going through this application note, the user should be able to:
- Be familiarized with the use of FIPAL to design a real practical filter from the specification to the fabrication and measurement
- Learn how to design a low pass filter starting from its specification
- Have an experience of using PDK feature which is commonly used by the designer in the industry
- Understand the limitation of available components in the market and its inherent package parasitic
Filter designers for RF/microwave requirements are challenged with meeting an often-conflicting set of performance demands. Often a final RF/microwave filter design is the result of a tedious, iterative process. Filter design is rarely easy or automatic, even for an experienced filter designer. Starting with just basic filter types, such as low-pass, high-pass, band-pass, or band-stop filters, and then trying to achieve a set of performance parameters for one of these filter types can turn into an almost endless iterative design process. These include an excessive number of inductors and the need to account for circuit element losses, component and pad parasitic, substrate effects, and interconnect effects.
Failure to take any of these into account during the design process can result in poor
performance in the fabricated filter and failure to meet the target performance requirements. This is especially true at high frequencies above 200 MHz but can also be true at lower frequencies.
Download Lumped Element Filter Notes