Design of quarter-wavelength resonator filters with coupling controllable paths
Yeo, Kiat Seng
Boon, Chirn Chye
Lim, Wei Meng
Do, Manh Anh
Date of Issue2012
IEEE Asia Pacific Conference on Circuits and Systems (2012 : Kaohsiung, Taiwan)
School of Electrical and Electronic Engineering
This paper presents compact quarter-wavelength resonator filters to have multiple transmission zeros points (ZPs) with controllable electric and magnetic coupling paths. For two coupled resonators, the relative strength of electric and magnetic coupling paths determines the transmission ZPs positions that can be at either lower or upper stopband. Besides, the location of transmission ZPs can be precisely controlled by tuning the dimension parameters. Based on the proposed topology and configuration, the second-order and fourth-order bandpass filters operating at 5.1 GHz have been designed using multi-layer LTCC technology.
DRNTU::Engineering::Electrical and electronic engineering
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