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Microstrip ring resonator bandpass filters using ceramic substrate
Author(s) -
Chen YuanBin,
Huang ChengLiang,
Liu ShihSheng,
Lin ShihHung
Publication year - 2010
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.24847
Subject(s) - band pass filter , miniaturization , resonator , microstrip , microwave , materials science , permittivity , ceramic , electronic engineering , optoelectronics , relative permittivity , substrate (aquarium) , dielectric , electrical engineering , telecommunications , engineering , composite material , nanotechnology , oceanography , geology
The miniaturization of ring bandpass filters by employing high‐permittivity ceramic substrates (with respective dielectric constants of 9.7 and 23.5) are investigated. Microwave dielectric ceramics with high permittivity are commonly applied in several microwave communication components. With the advantages of compact size, high‐permittivity ceramics can be used as the substrate for bandpass filters. Moreover, the fundamental characteristics of newly developed compact square‐ring resonators have also been described and applied to the design of bandpass filters. In this paper, the designed square‐ring resonators structures are simulated using an IE3D simulator. The responses of the fabricated bandpass filters using Al 2 O 3 (ε r = 9.7, tan δ = 0.000036) and 0.875Mg 0 . 95 Zn 0 . 05 TiO 3 ‐0.125Ca 0 . 8 Sm 0 . 4 / 3 TiO 3 (ε r = 23.5, tan δ = 0.000021) ceramic substrates are designed at the center frequency of 2.4 GHz. This compact size, low loss bandpass filter should be useful in many wireless communication systems. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52: 218–220, 2010; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24847