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A miniaturized bandpass filter fabricated on high dielectric constant ceramic substrates
Author(s) -
Hsieh MingLiang,
Huang TsungHui,
Chen LihShan,
Sun ChianHao,
Wang Shuming,
Houng MauPhon,
Fu ShenLi
Publication year - 2007
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.22698
Subject(s) - band pass filter , center frequency , return loss , materials science , bandwidth (computing) , microwave , resonator , insertion loss , electronic filter topology , dielectric , ceramic , electronic engineering , optoelectronics , high pass filter , electrical engineering , low pass filter , telecommunications , engineering , composite material , antenna (radio)
A four‐pole open‐loop resonator bandpass filter fabricated on high dielectric constant (Zn 0.9 Mg 0.1 )TiO 3 ceramic substrates is presented. The full‐wave simulator IE3D is utilized to calculate the coupling coefficients of each basic coupling structure and simulate S‐parameters of the designed bandpass filters. The center frequency of designed bandpass filter is f o = 2.45 GHz and the fractional bandwidth is 4%. The center frequency of the fabricated bandpass filter is at 2.47 GHz and the fractional bandwidth is 5%. The measured insertion loss and return loss of the filter is −3.68 and −14.92 dB, respectively. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 2087–2090, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22698