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Dual‐band multilayer ceramic microwave bandpass filter for applications in wireless communication
Author(s) -
Huang ChengLiang,
Pan ChungLone
Publication year - 2002
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.10169
Subject(s) - filter (signal processing) , electronic engineering , m derived filter , waveguide filter , resonator , microwave , admittance , acoustics , band pass filter , electronic filter topology , electrical engineering , butterworth filter , prototype filter , engineering , filter design , electrical impedance , telecommunications , physics
A dielectric multilayer dual‐band filter is realized by using a stepped‐impedance resonator (SIR). The input/output ports of the filter are formed with transmission lines directly tapped to the resonators. The admittance matrix for the equivalent circuit of the filter has been derived and transformed to the scattering matrix to initially determine the required spec. Losses and other EM effects are taken into account to further modify the actual dimension of the designed filter. The designed structures are simulated using an IE3D simulator. The response of the fabricated filter is measured using an HP8757D network analyzer. Sample results of the filter performances demonstrate responses, in good agreement with the computer simulations. © 2002 John Wiley & Sons, Inc. Microwave Opt Technol Lett 32: 327–329, 2002.