@inproceedings{de01bed5c6b2468f9da0e6fdf3bd8d6f,
title = "Design of a novel four-band microstrip bandpass filter using double-layered substrate",
abstract = "A novel four-band microstrip bandpass filter using double-layered structure is proposed. The basic components used to build the proposed filter are four pairs of stepped impedance resonators on the top metal layer and middle metal layer. The four pairs of resonators have different fundamental frequencies. The first and second fundamental frequencies are designed to operate at 3 and 5 GHz on the middle layer; the third and fourth fundamental frequencies are designed to operate at 7 and 9 GHz on the top layer. Due to cross-coupling effect, attenuation poles at both sides of the passbands can be created to improve the filter selectivity. The full-wave simulator IE3D is used to design the four-band bandpass filter and to calculate the coupling coefficients of the resonators.",
keywords = "Bandpass filter, Cross coupling, Stepped impedance resonator",
author = "Hsu, {Ko Wen} and Tu, {Wen Hua}",
year = "2009",
doi = "10.1109/MWSYM.2009.5165878",
language = "???core.languages.en_GB???",
isbn = "9781424428045",
series = "IEEE MTT-S International Microwave Symposium Digest",
pages = "1041--1044",
booktitle = "IMS 2009 - 2009 IEEE MTT-S International Microwave Symposium Digest",
note = "2009 IEEE MTT-S International Microwave Symposium, IMS 2009 ; Conference date: 07-06-2009 Through 12-06-2009",
}