Bandpass Filter with Tunable/Switchable In-band Interference Rejection

2021 ◽  
pp. 1-1
Author(s):  
Mohammad Abu Khater ◽  
Pintu Adhikari ◽  
Mattias Thorsell ◽  
Sten Gunnarsson ◽  
Brian Edward ◽  
...  
Keyword(s):  
Bandpass Filter ◽  
Interference Rejection

Fractal-based triangular bandpass filter with a notched band for interference rejection in wideband applications

Circuit World ◽  
2019 ◽  
Vol 45 (3) ◽  
pp. 141-147 ◽  
Author(s):  
Karthie S. ◽  
Salivahanan S.
Keyword(s):  
Communication Systems ◽  
Bandpass Filter ◽  
Wireless Local Area Network ◽  
Local Area Network ◽  
Low Cost ◽  
Area Network ◽  
Interference Rejection ◽  
Content Type ◽  
Notched Band ◽  
Low Cost Substrate

Purpose This paper aims to present the design of a novel triangular-shaped wideband microstrip bandpass filter implemented on a low-cost substrate with a notched band for interference rejection. Design/methodology/approach The conventional dual-stub filter is embedded with simple fractal-based triangular-circular geometries through various iterations to reject wireless local area network (WLAN) signals with a notched band at 5.8 GHz. Findings The filter covers a wide frequency band from 3.1 to 8.8 GHz and has a fractional bandwidth of 98 per cent with the lower passband of 57.5 per cent and upper passband of 31.6 per cent separated by a notched band at 5.8 GHz. The proposed wideband prototype bandpass filter is fabricated in FR-4 substrate using PCB technology and the simulation results are validated with measurement results which include insertion loss, return loss and group delay. The fabricated filter has a sharp rejection of 28.3 dB at 5.8 GHz. Measured results show good agreement with simulated responses. The performance of the fractal-based wideband filter is compared with other wideband bandpass filters. Originality/value In the proposed work, a fractal-based wideband bandpass filter with a notched band is reported. The conventional dual-stub filter is deployed with triangular-circular geometry to design a wideband filter with a notched band to suppress interference signals at WLAN frequency. The proposed wideband filter exhibits smaller size and better interference rejection compared to other wideband bandpass filter designs implemented on low-cost substrate reported in the literature. The aforementioned wideband filter finds application in wideband wireless communication systems.

A Compact L-Band Bandpass Filter with RF MEMS-Enabled Reconfigurable Notches for Interference Rejection in GPS Applications

2015 ◽  
Vol 16 (1) ◽  
pp. 81-88 ◽  
Author(s):  
Jin Li ◽  
Mark Hickle ◽  
Dimitra Psychogiou ◽  
Dimitrios Peroulis
Keyword(s):  
Bandpass Filter ◽  
Rf Mems ◽  
Interference Rejection ◽  
L Band

Design of a Dual-Band Bandpass Filter Using Active Inductor Principle

2017 ◽  
Vol 7 (4) ◽  
pp. 342
Author(s):  
Imane Halkhams ◽  
Said Mazer ◽  
Mahmoud Mehdi ◽  
Moulhime El Bekkali ◽  
Wafae El Hamdani
Keyword(s):  
Bandpass Filter ◽  
Dual Band ◽  
Active Inductor

Design of Pseudo-Elliptical Wideband Bandpass Filter Using Stub Loaded Short-Circuited Parallel-Coupled Three-Line Units

2010 ◽  
Vol E93-C (7) ◽  
pp. 1022-1031 ◽  
Author(s):  
Chun-Ping CHEN ◽  
Junya TAKAHASHI ◽  
Zhewang MA ◽  
Tetsuo ANADA ◽  
Jui-Pang HSU
Keyword(s):  
Bandpass Filter

A Novel Compact Thru-silicon-via On-chip Passive MMW Bandpass Filter for 77GHz Applications

PIERS Online ◽  
2009 ◽  
Vol 5 (7) ◽  
pp. 605-608
Author(s):  
Wayne Woods ◽  
Guoan Wang ◽  
Jiansheng Xu ◽  
Hanyi Ding ◽  
Shu Rong Dong ◽  
...  
Keyword(s):  
Bandpass Filter ◽  
On Chip
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