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Millimeter‐wave bandpass filter on LCP using CSRR‐loaded triangular‐shape quarter‐mode substrate integrated waveguide
Author(s) -
Senior David E.,
Rahimi Arian,
Yoon YongKyu
Publication year - 2015
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.29190
Subject(s) - band pass filter , insertion loss , chebyshev filter , resonator , materials science , extremely high frequency , microwave , return loss , optoelectronics , bandwidth (computing) , optics , physics , electrical engineering , engineering , telecommunications , antenna (radio)
A millimeter‐wave two‐pole bandpass filter (BPF) with an asymmetrical frequency response is realized on a flexible liquid crystal polymer substrate for wearable/conformal wireless applications. The design uses the triangular‐shape quarter‐mode substrate integrated waveguide (QMSIW) cavity loaded with a complementary split‐ring resonator. The compact cavity shows a resonant mode below the quasi‐TE 1,0,0.5 mode of an original QMSIW cavity, which indicates a further size reduction. In addition, its low quality factor (Q) is useful for BPFs with broad fractional bandwidth (FBW). A surface micromachined two‐pole Chebyshev BPF is realized for operation at 35 GHz with a 20 dB return loss FBW of 8% and an insertion loss of 1.7 dB. © 2015 Wiley Periodicals, Inc. Microwave Opt Technol Lett 57:1782–1784, 2015