NARROWBAND LTCC FILTER WITH LENGTH-REDUCED END-COUPLED RESONATORS | Zendy

Liangfan Zhu | Zendy

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NARROWBAND LTCC FILTER WITH LENGTH-REDUCED END-COUPLED RESONATORS

Author(s) -

Liangfan Zhu

Publication year - 2020

Publication title -

progress in electromagnetics research letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.245

H-Index - 33

ISSN - 1937-6480

DOI - 10.2528/pierl20061801

Subject(s) - narrowband , resonator , materials science , filter (signal processing) , acoustics , electronic engineering , optoelectronics , electrical engineering , physics , engineering

A narrowband low temperature co-fired ceramic (LTCC) bandpass filter (BPF) with five cascaded physical length-reduced resonators is proposed. Each resonator is built with cascaded horizontal and vertical microstrip lines to produce slow-wave effect, which reduces the physical length of resonators for miniaturization. The entire size of the proposed BPF is only 15 × 2 × 0.3 mm, and a size reduction of 60% is achieved compared with a traditional implementation. A narrowband fractional bandwidth (FBW) of 4% and an average passband insertion loss of only 2.4 dB are achieved. Comparison and discussion are implemented as well.

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