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

Fully CMOS integrated bandpass filter based on mechanical coupling of two RF MEMS resonators

2010 ◽  
Vol 46 (9) ◽  
pp. 640 ◽  
Author(s):  
J. Giner ◽  
A. Uranga ◽  
F. Torres ◽  
E. Marigó ◽  
N. Barniol
Keyword(s):  
Bandpass Filter ◽  
Rf Mems ◽  
Mechanical Coupling ◽  
Mems Resonators

A novel low-loss 4-bit bandpass filter using RF MEMS switches

2021 ◽  
Author(s):  
Lulu Han ◽  
Yu Wang ◽  
Qiannan Wu ◽  
Shiyi Zhang ◽  
Shanshan Wang ◽  
...  
Keyword(s):  
Bandpass Filter ◽  
Rf Mems ◽  
Low Loss ◽  
Mems Switches ◽  
Rf Mems Switches

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.

K‐band RF‐MEMS uniplanar reconfigurable‐bandwidth bandpass filter using multimodal immittance inverters

2013 ◽  
Vol 49 (11) ◽  
pp. 704-706 ◽  
Author(s):  
A. Contreras ◽  
M. Ribó ◽  
L. Pradell ◽  
J. Casals‐Terré ◽  
F. Giacomozzi ◽  
...  
Keyword(s):  
Bandpass Filter ◽  
Rf Mems ◽  
K Band

Design and Simulation of K Band RF MEMS Tunable Combline Filter

2014 ◽  
Vol 875-877 ◽  
pp. 2219-2223 ◽  
Author(s):  
Zhong Liang Deng ◽  
Xing Jie Cao
Keyword(s):  
Mobile Communication ◽  
Communication Systems ◽  
Bandpass Filter ◽  
Rf Mems ◽  
Bandpass Filters ◽  
Simulation Software ◽  
Frequency Range ◽  
Mobile Communication Systems ◽  
Simulation Results ◽  
Tunable Frequency

Tunable bandpass filters are generally preferred and are used extensively in the mobile communication systems. In this paper, a design of the RF MEMS tunable combline bandpass filter is proposed. Firstly, the theory of the RF MEMS tunable combline bandpass filter is presented. Secondly, a combline bandpass filter which have a tunable frequency range from 18GHz to 27GHz is designed and simulated by using the EDA simulation software. Its bandwidth is about 1GHz in the tunable frequency range. From the simulation results, the designed filter is not only compact and effortless to fabricate but also relatively superior in some aspects.

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