Analysis and procedure to design differential wideband filters with high-selectivity and high common-mode suppression

2016 ◽  
Vol 30 (17) ◽  
pp. 2334-2343
Author(s):  
Elizabeth Cruz-Pérez ◽  
José L. Olvera-Cervantes ◽  
Alonso Corona-Chávez
Keyword(s):  
High Selectivity ◽  
Common Mode ◽  
Mode Suppression ◽  
Wideband Filters

Tunable balanced to balanced filtering power divider with high common-mode suppression

Frequenz ◽  
2020 ◽  
Vol 74 (7-8) ◽  
pp. 263-270
Author(s):  
Cao Zeng ◽  
Xue Han Hu ◽  
Feng Wei ◽  
Xiao Wei Shi
Keyword(s):  
Return Loss ◽  
High Selectivity ◽  
Power Divider ◽  
Center Frequency ◽  
Differential Mode ◽  
Common Mode ◽  
Mode Suppression ◽  
The Common ◽  
Equal Power ◽  
Good Agreement

AbstractIn this paper, a tunable balanced-to-balanced in-phase filtering power divider (FPD) is designed, which can realize a two-way equal power division with high selectivity and isolation. A differential-mode (DM) passband with a steep filtering performance is realized by applying microstrip stub-loaded resonators (SLRs). Meanwhile, six varactors are loaded to the SLRs to achieve the center frequency (CF) and bandwidth adjustment, respectively. U-type microstrip lines integrated with stepped impedance slotline resonators are utilized as the differential feedlines, which suppress the common-mode (CM) intrinsically, making the DM responses independent of the CM ones. A tuning center frequency from 3.2 to 3.75 GHz and a fractional bandwidth (12.1–17.6%) with more than 10 dB return loss and less than 2.3 dB insertion loss can be achieved by changing the voltage across the varactors. A good agreement between the simulated and measured results is observed. To the best of authors' knowledge, the proposed balanced-to-balanced tunable FPD is first ever reported.

High selectivity and common‐mode suppression balanced bandpass filter with TM dual‐mode SIW cavity

2019 ◽  
Vol 13 (12) ◽  
pp. 2129-2133 ◽  
Author(s):  
Hong‐wei Deng ◽  
Liang Sun ◽  
Yi‐fan Xue ◽  
Fei Liu ◽  
Tao Xu
Keyword(s):  
High Selectivity ◽  
Bandpass Filter ◽  
Dual Mode ◽  
Common Mode ◽  
Mode Suppression
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