Design of tri-band filters with improved band allocation
Journal
IEEE Transactions on Microwave Theory and Techniques
Journal Volume
57
Journal Issue
7
Pages
1790-1797
Date Issued
2009-07
Author(s)
Abstract
A new design method for tri-band filters with improved band allocation is proposed. The design concept treats different band allocations with different methodologies. For the bands assigned to adjacent frequency regions, transmission zeros are introduced to split one of the single bands into two. For the bands that are assigned separately, different harmonic modes of stepped-impedance resonators are used to realize different passbands. Two design examples with different responses and band allocations are given, and were verified by experiments, as well as full-wave simulation results.
Type
journal article