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High selectivity seventh-order wideband bandpass filter using coupled lines and open/shorted stubs.
- Source :
- Electronics Letters (Wiley-Blackwell); 2/22/2018, Vol. 54 Issue 4, p223-225, 2p
- Publication Year :
- 2018
-
Abstract
- A compact seventh-order wideband bandpass filter (BPF) with sharp roll-off skirts using coupled lines and open stubs (OSs)/shorted stubs (SSs) is proposed. Seven transmission poles in the passband and four deep transmission zeros from 0 to 2f<subscript>0</subscript> ( f<subscript>0</subscript> denotes centre frequency of the passband) can be realised with the help of half-wavelength OSs and quarter-wavelength SSs. For demonstration, a wideband BPF prototype is designed, fabricated with a measured 3-dB fractional bandwidth of 78% (1.22-2.77 GHz) and transition band roll-off rates of over 175 dB/GHz. Good agreement between the simulations and measurements validates the design method. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00135194
- Volume :
- 54
- Issue :
- 4
- Database :
- Complementary Index
- Journal :
- Electronics Letters (Wiley-Blackwell)
- Publication Type :
- Academic Journal
- Accession number :
- 128157945
- Full Text :
- https://doi.org/10.1049/el.2017.4233