A novel compact quad-band microstrip bandstop filter design using open-circuited stubs

2013 ◽  
Author(s):  
Ceyhun Karpuz ◽  
Adnan Gorur ◽  
Ali Kursad Gorur ◽  
Ahmet Ozek
Keyword(s):  
Filter Design ◽  
Bandstop Filter

Bandwidth-enhanced lumped-element absorptive bandstop filter topology and its application to LTCC bandstop filter design

2014 ◽  
Vol 7 (6) ◽  
pp. 691-698 ◽  
Author(s):  
Juseop Lee ◽  
Byungguk Kim ◽  
Kangho Lee ◽  
William J. Chappell
Keyword(s):  
Low Temperature ◽  
Filter Design ◽  
Second Order ◽  
Center Frequency ◽  
Q Factor ◽  
First Order ◽  
Lumped Element ◽  
Bandstop Filter ◽  
Analytic Design ◽  
Order Four

In this paper, we show a second-order (four-resonator) absorptive bandstop filter circuit topology which gives a larger bandwidth compared to a first-order topology. Due to the absorptive characteristic, it creates a large attenuation at the center frequency using low-Q resonators. Since low-Q resonators can be used in generating a large attenuation, small-size resonators can be employed in bandstop filter design. Analytic design equations are provided so that a higher-order absorptive bandstop filter can be designed analytically. It is also shown that the second-order filter topology exhibits a better frequency selectivity having a same bandwidth. The proposed filter topology has been applied to a design of a miniaturized low-temperature co-fired ceramic bandstop filter with low-Q resonators. The Q-factor of the lumped-element resonators has been chosen to be 5 for demonstration.

MICROSTRIP BANDSTOP FILTER DESIGN USING STEPPED IMPEDANCE RESONATOR

2018 ◽  
Vol SV2018 (2) ◽  
pp. 157-160
Author(s):  
Bhanu Shrestha ◽  
Gyanendra Prasad Joshi
Keyword(s):  
Filter Design ◽  
Stepped Impedance Resonator ◽  
Bandstop Filter

scholarly journals E-plane waveguide bandstop filter with double-sided printed-circuit insert

2017 ◽  
Vol 30 (2) ◽  
pp. 223-234
Author(s):  
Snezana Stefanovski-Pajovic ◽  
Milka Potrebic ◽  
Dejan Tosic ◽  
Zoran Stamenkovic
Keyword(s):  
Filter Design ◽  
Split Ring Resonator ◽  
Ring Resonators ◽  
Plane Waveguide ◽  
Mutual Distance ◽  
Third Order ◽  
Split Ring ◽  
Printed Circuit ◽  
Bandstop Filter ◽  
Novel Design

In this paper a novel design of an E-plane bandstop waveguide filter with a double-sided printed-circuit insert is presented. Split-ring resonators are used as the resonating elements to obtain the bandstop response. The amplitude response of the waveguide resonator with a single resonating element on the insert is analyzed for various dimensions and positions of the split-ring resonator. The coupling between two resonators on the insert, in terms of their mutual distance, is considered as a next step to the filter design. Various positions of the resonators are considered, including the case with the resonators on the different sides of the insert, which is of interest for the proposed filter design. Finally, a third-order bandstop filter with a double-sided printed-circuit insert, operating in the X-frequency band, is introduced. The filter response is analyzed for various distances between the resonators and for various positions of the resonator printed on the other side of the insert. Proposed filter design is simple, providing for the accurate fabrication, miniaturization and possibility to relatively easy obtain multi-band response, using resonators with different resonant frequencies on the different sides of the insert.

scholarly journals Parametric studies of ring and parallel coupled line resonators for matched bandstop filter design

2019 ◽  
Vol 14 (1) ◽  
pp. 29
Author(s):  
Abdullah Mohammed Zobilah ◽  
Adib Othman ◽  
Noor Azwan Shairi ◽  
Zahriladha Zakaria
Keyword(s):  
Parametric Study ◽  
Return Loss ◽  
Ring Resonator ◽  
Filter Design ◽  
Substantial Part ◽  
Coupled Line ◽  
Parametric Studies ◽  
Bandstop Filter ◽  
Very High ◽  
Careful Design

Recently, matched bandstop filters had become a substantial part of modern RF and microwave systems. However, in these types of filters, the key problem in the couplings of any microstrip resonators to transmission microstrip line is the variation or tolerance of the coupling gap. It was found that the bandstop response is very sensitive to the gap size of the coupled line. Therefore, this paper presents parametric studies of dual-mode parallel coupled line and ring resonator for matched bandstop filter design. For parallel coupled line resonator, it was found that with careful design and proper circuit parametric study on the coupling spacing, very high notch and matched return loss response were obtained. In contrast, for ring resonator, based on the simulated result, it was found that a very high notch and matched return loss response were obtained with careful design and proper circuit parametric study on the coupling spacing, width at coupling lines, and perturbed stub length.

Bandstop Filter Design for Ultra-Low Loss and High Power

1973 ◽  
Author(s):  
R. L. Sleven ◽  
A. J. Anselmo ◽  
D. S. Levinson ◽  
J. J. Taub ◽  
N. Worontzoff
Keyword(s):  
High Power ◽  
Filter Design ◽  
Low Loss ◽  
Bandstop Filter
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