Microstrip and slotline two-pole microwave filters with additional transmission zeros

2004 ◽  
Author(s):  
Y.A. Kolmakov ◽  
I.B. Vendik ◽  
A.M. Savin
Keyword(s):  
Microwave Filters ◽  
Transmission Zeros

Inline Microwave Filters With N+1 Transmission Zeros Generated by Frequency-Variant Couplings: Coupling-Matrix-Based Synthesis and Design

2021 ◽  
pp. 1-1
Author(s):  
Martyna Mul ◽  
Maciej Jasinski ◽  
Adam Lamecki ◽  
Roberto Gomez-Garcia ◽  
Michal Mrozowski
Keyword(s):  
Microwave Filters ◽  
Coupling Matrix ◽  
Transmission Zeros

scholarly journals Miniaturized tri-notched wideband bandpass filter with ultrawide upper stopband suppression

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Chen-Hao Wang ◽  
Xiao-Min Shi
Keyword(s):  
Bandpass Filter ◽  
Ring Resonator ◽  
High Order ◽  
Microwave Filters ◽  
Lower Upper ◽  
Transmission Zeros ◽  
Measurement Results ◽  
Stepped Impedance Resonator ◽  
And Performance ◽  
Spurious Modes

AbstractStepped impedance resonator (SIR) and its derivative resonators are widely used in the design of microwave filters. However, many spurious modes will be introduced into the stopband, resulting in lower upper stopband suppression and performance degradation. Based on the principle of slit line, a method to enhance the upper stopband suppression is proposed and verified by a miniaturized tri-notched wideband bandpass filter based on stub loaded ring resonator (SLRR) and shorted-stub loaded SIR (SSLSIR). The wideband is formed by coupling SLRR and interdigital lines, which has a rectangular DGS on the back of the substrate. Three notched bands with controllable positions in the passband can be produced by inserting two different SSLSIRs inside and outside the SLRR. Four slit lines are loaded on the low impedance stub of SSLSIR to adjust the high-order modes close to the transmission zeros (TZs). The operating frequency of the filter is 2.2–7.6 GHz, and the three notched bands are located at 2.97 GHz, 5.75 GHz and 6.46 GHz, respectively. The measurement results show that the − 20 dB enhanced upper stopband of the filter can reach 32 GHz, which proves that the filter has the characteristic of ultrawide upper stopband suppression while keeping the miniaturization.

scholarly journals Triple-Mode Microwave Filters With Arbitrary Prescribed Transmission Zeros

IEEE Access ◽  
2021 ◽  
Vol 9 ◽  
pp. 22045-22052
Author(s):  
Mustafa S. Bakr
Keyword(s):  
Microwave Filters ◽  
Transmission Zeros ◽  
Triple Mode

SYNTHESIS OF MICROSTRIP MICROWAVE FILTERS WITH ATTENUATION POLES AT ENDING FREQUENCIES

2012 ◽  
Vol 71 (19) ◽  
pp. 1733-1737
Author(s):  
V. O. Sokolov ◽  
V. A. Shlykov ◽  
A. V. Ovchinnikov
Keyword(s):  
Microwave Filters

Design of Inline Waveguide Filters With Frequency-Variant Couplings Producing Transmission Zeros

2021 ◽  
pp. 1-1
Author(s):  
Giuseppe Macchiarella ◽  
Gian Guido Gentili ◽  
Nicolo Delmonte ◽  
Lorenzo Silvestri ◽  
Maurizio Bozzi
Keyword(s):  
Transmission Zeros ◽  
Waveguide Filters

scholarly journals About the possibility of metamaterials application at the band–pass microwave filters designing with superwide pass transmission band

2021 ◽  
Vol 1029 ◽  
pp. 012097
Author(s):  
A S Budyakov ◽  
L V Cherckesova ◽  
D V Kleimenkin ◽  
Yu A Shokova
Keyword(s):  
Transmission Band ◽  
Microwave Filters ◽  
Band Pass

Synthesis of Extracted Pole Filters With Transmission Zeros in Both Stopbands and Nonresonant Nodes of the Same Nature

2021 ◽  
Vol 31 (1) ◽  
pp. 17-20
Author(s):  
Eloi Guerrero ◽  
Jordi Verdu ◽  
Pedro de Paco
Keyword(s):  
Transmission Zeros

On the Integration of Microwave Filters and Waveguide Switches

2021 ◽  
pp. 1-4
Author(s):  
Javier Ossorio Garcia ◽  
Juan Carlos Melgarejo Lermas ◽  
Vicente E. Boria ◽  
Marco Guglielmi
Keyword(s):  
Microwave Filters
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