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Planar SIR microwave bandpass filter using high‐permittivity ceramics
Author(s) -
Huang ChengLiang,
Yen PauYeou,
Weng MinHung
Publication year - 2000
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 - 10.1002/1098-2760(20000920)26:6<410::aid-mop19>3.0.co;2-y
Subject(s) - band pass filter , waveguide filter , electronic engineering , filter (signal processing) , microwave , resonator , admittance parameters , scattering parameters , materials science , acoustics , planar , m derived filter , permittivity , electronic filter topology , prototype filter , filter design , electrical engineering , optoelectronics , engineering , dielectric , computer science , physics , telecommunications , voltage , computer graphics (images)
High‐permittivity dielectric ceramic materials have been applied in the fabrication of a planar stepped‐impedance resonator (SIR) microwave bandpass filter. 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. Fabricated filters are measured by an HP8510B network analyzer. Sample results of the filter performances demonstrate responses in good agreement with the computer simulations. © 2000 John Wiley & Sons, Inc. Microwave Opt Technol Lett 26: 410–413, 2000.