Design of parallel coupled-line microstrip wideband bandpass filter using stepped-impedance resonators

2007 ◽  
Vol 49 (4) ◽  
pp. 795-798 ◽  
Author(s):  
Cheng-Yuan Hung ◽  
Min-Hang Weng ◽  
Yan-Kuin Su ◽  
Ru-Yuan Yang
Keyword(s):  
Bandpass Filter ◽  
Coupled Line

Miniaturized Wideband Bandpass Filter based on Capacitor-loaded One-eighth Wavelength Coupled Line

2021 ◽  
Vol 36 (7) ◽  
pp. 865-871
Author(s):  
Jin Shi ◽  
Jiancheng Dong ◽  
Kai Xu ◽  
Lingyan Zhang
Keyword(s):  
Insertion Loss ◽  
Simple Structure ◽  
Bandpass Filter ◽  
State Of The Art ◽  
Center Frequency ◽  
Fractional Bandwidth ◽  
Coupled Line ◽  
Transmission Zeros ◽  
Compact Size ◽  
Multiple Transmission

A novel miniaturized wideband bandpass filter (BPF) using capacitor-loaded microstrip coupled line is proposed. The capacitors are loaded in parallel and series to the coupled line, which makes the filter just require one one-eighth wavelength coupled line and achieve filtering response with multiple transmission poles (TPs) and transmission zeros (TZs). Compared with the state-of-the-art microstrip wideband BPFs, the proposed filter has the advantages of compact size and simple structure. A prototype centered at 1.47 GHz with the 3-dB fractional bandwidth of 86.5% is demonstrated, which exhibits the compact size of 0.003λ2 g (λg is the guided wavelength at the center frequency) and the minimum insertion loss of 0.37 dB.

scholarly journals A Highly Independent Multiband Bandpass Filter Using a Multi-Coupled Line Stub-SIR With Folding Structure

IEEE Access ◽  
2020 ◽  
Vol 8 ◽  
pp. 83009-83026 ◽  
Author(s):  
Teguh Firmansyah ◽  
Mudrik Alaydrus ◽  
Yuyu Wahyu ◽  
Eko Tjipto Rahardjo ◽  
Gunawan Wibisono
Keyword(s):  
Bandpass Filter ◽  
Coupled Line ◽  
Folding Structure

scholarly journals Simple Coupled-Line Tunable Bandpass Filter With Wide Tuning Range

IEEE Access ◽  
2020 ◽  
Vol 8 ◽  
pp. 82286-82293
Author(s):  
Xiaoxiao Chen ◽  
Yongle Wu ◽  
Yuhao Yang ◽  
Weimin Wang
Keyword(s):  
Tuning Range ◽  
Bandpass Filter ◽  
Wide Tuning Range ◽  
Coupled Line ◽  
Tunable Bandpass Filter
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