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Compact size of the UWB BPF using π‐type meander structure and folding short stubs
Author(s) -
Yoon KiCheol,
Lee TaeHyeon,
Kim ChangSoon,
Shin KwangSeob,
Son KwangChul,
Kim SeongCheol
Publication year - 2018
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.31456
Subject(s) - meander (mathematics) , band pass filter , return loss , ultra wideband , center frequency , planar , folding (dsp implementation) , materials science , bandwidth (computing) , optoelectronics , physics , electronic engineering , electrical engineering , telecommunications , engineering , computer science , mathematics , geometry , computer graphics (images) , antenna (radio)
In this article, the reduced size of the ultra‐wide band (UWB) band‐pass filter (BPF) with λg/4 short stubs using π‐type meander structure and folding short stubs is presented. The π‐type meander structure and folding short stubs are adopted instead of the λg/4 transmission line (TL) and λg/4 short stubs to reduce the size of the proposed BPF. The overall size of the new BPF is reduced by 72.5% over the conventional BPF and other filters. The measurement results of the insertion and return losses are 1.61 and 15.4 dB with a bandwidth of 125% (1.96‐9.20 GHz) at a center frequency of 5.8 GHz. The total size of the BPF is 5.13 × 5.36 mm 2 . It is applied to a coordinate intelligent transport system. The proposed BPF can be fabricated for semiconductors because of its planar structure.