Open AccessDesign of compact dual‐passband LTCC filter exploiting stacked QMSIW and EMSIW
Author(s) -
Zhang Xiangjun,
Ma Caoyuan,
Wang Fei
Publication year - 2015
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
eISSN - 1350-911X
pISSN - 0013-5194
DOI - 10.1049/el.2015.0391
Subject(s) - passband , insertion loss , bandwidth (computing) , materials science , ceramic , band pass filter , dual mode , filter (signal processing) , optoelectronics , electronic engineering , butterworth filter , return loss , prototype filter , electrical engineering , low pass filter , engineering , telecommunications , composite material , antenna (radio)
A dual‐passband low‐temperature co‐fired ceramic (LTCC) filter with a stacked quarter‐mode substrate‐integrated waveguide (QMSIW) and an eighth‐mode SIW (EMSIW) on LTCC substrates is presented. By exploiting the QMSIW and EMSIW cavities, the filter has a dual passband with high selectivity and compact size. The experimental filter exhibits two passbands, one is centred at 5.4 GHz with an insertion loss of <1.7 dB, and a 3 dB bandwidth of 13%. The other is centred at 8.3 GHz with an insertion loss of <1.5 dB, and with a bandwidth of 12.9%. The volume of the filter is only 6.5 × 6.5 × 1.2 mm 3 .