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A compact hairpin bandpass filter on high‐permittivity dielectrics using a tape‐casting technique
Author(s) -
Chen LihShan,
Weng MinHung,
Huang TsungHui,
Chen HanJan,
Hsi YiChang,
Houng MauPhon
Publication year - 2004
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.20408
Subject(s) - band pass filter , materials science , permittivity , dielectric , center frequency , microwave , ceramic , resonator , fabrication , return loss , optoelectronics , insertion loss , tape casting , relative permittivity , bandwidth (computing) , electronic engineering , electrical engineering , composite material , telecommunications , engineering , medicine , alternative medicine , pathology , antenna (radio)
By using high‐permittivity dielectrics, bandpass filters can be miniaturized. A hairpin‐line filter based on high‐permittivity dielectrics is proposed in this study. Ba 2 Ti 9 O 20 , with high dielectric constant, low loss, and stable temperature is available for the dielectric resonator and is adopted as a material in the fabrication of high‐permittivity ceramic substrates. A tape‐casting technique is employed to produce thin and flat Ba 2 Ti 9 O 20 ‐based ceramic substrates. The center frequency of the fabricated bandpass filter is 5.75 GHz and the bandwidth is 742 MHz. The measured insertion and return losses of the filter are −1.34 and −12 dB, respectively. The measured response of the fabricated filter is in agreement with the simulated results. © 2004 Wiley Periodicals, Inc. Microwave Opt Technol Lett 43: 164–166, 2004; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.20408
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