Tunable dual-mode dual-band filter with constant bandwidth and high selectivity

2016 ◽  
Vol 59 (2) ◽  
pp. 283-285 ◽  
Author(s):  
Bian Wu ◽  
Yang Xu ◽  
Lei Xia
Keyword(s):  
High Selectivity ◽  
Dual Band ◽  
Dual Mode ◽  
Band Filter ◽  
Constant Bandwidth

3-D Printed Dual-Band Filter Based on Spherical Dual-Mode Cavity

2021 ◽  
pp. 1-1
Author(s):  
Yuan Chen ◽  
Gang Zhang ◽  
Jiasheng Hong ◽  
Zhengyu Sun ◽  
Jiquan Yang ◽  
...  
Keyword(s):  
Dual Band ◽  
Dual Mode ◽  
Band Filter

A miniature dual-band filter based on microstrip dual-mode resonators

2012 ◽  
Vol 38 (9) ◽  
pp. 839-842 ◽  
Author(s):  
B. A. Belyaev ◽  
A. M. Serzhantov ◽  
V. V. Tyurnev
Keyword(s):  
Dual Band ◽  
Dual Mode ◽  
Band Filter

Dual-mode resonator filter with improved feed-lines for dual-band applications

2020 ◽  
Vol 71 (6) ◽  
pp. 433-435
Author(s):  
Shan Shan Gao ◽  
Jia-Lin Li ◽  
Zhe Lin Zhu ◽  
Jia Li Xu ◽  
Yong Xin Zhao
Keyword(s):  
Simple Structure ◽  
High Selectivity ◽  
Bandpass Filter ◽  
Dual Band ◽  
Dual Mode ◽  
Transmission Zeros ◽  
Good Consistency ◽  
Mode Resonator

AbstractAn improved feedline configuration for dual-mode resonator filter is investigated in this paper. Based on the introduced topology, a dual-mode dual-band bandpass filter with center frequencies of 1.8 and 2.4 GHz is optimally designed, fabricated and tested. The introduced dual-band bandpass filter has simple structure and enables high selectivity to be realized due to two pairs of transmission zeros located near to the lower and upper passband, respectively. Both measured and simulated performances are presented with good consistency.

Multilayer SIW Dual-Band Filters with Independent Band Characteristics and High Selectivity

Frequenz ◽  
2019 ◽  
Vol 73 (9-10) ◽  
pp. 293-300
Author(s):  
Dinghong Jia ◽  
Jianqin Deng ◽  
Yangping Zhao ◽  
Ke Wu
Keyword(s):  
High Selectivity ◽  
Bandpass Filter ◽  
Large Range ◽  
Metal Layer ◽  
Dual Band ◽  
Effective Dimension ◽  
Dual Mode ◽  
Transmission Zeros ◽  
Design Freedom ◽  
Good Agreement

Abstract This work presents an approach to developing dual-mode dual-band substrate integrated waveguide (SIW) bandpass filter based on multilayer process. TE102/TE201 and TE101/TE102 modes are used to feature the two passbands, respectively. To begin with, large range of band location ratios are decided by the effective dimension of the SIW resonator. With reference to the field distribution, independent coupling schemes of the dual-modes are then realized by slots or circular apertures etched on the middle metal layer. It allows to not only introduce a large design freedom of bandwidth but also keep compactness. Finally, source-load and mixed couplings are deployed to produce transmission zeros around the passband in providing a sharp selectivity in the two filters, respectively. The details to independently control the center frequencies and bandwidth of two passbands are also presented. A two-order double-layered and a triple-layered SIW dual-band bandpass filter are prototyped to evaluate the proposed design approach, respectively. Results show a good agreement between simulations and measurements. The proposed filter exhibits flexible design freedom, high selectivity as well as good out-of-band rejection.

Miniaturised dual‐band filter with high selectivity using split ring scheme

2015 ◽  
Vol 51 (7) ◽  
pp. 570-572 ◽  
Author(s):  
Guoan Wu ◽  
Lingling Yang ◽  
Qinfen Xu
Keyword(s):  
High Selectivity ◽  
Dual Band ◽  
Split Ring ◽  
Band Filter

Compact and high selectivity dual-band dual-mode microstrip BPF with single stepped-impedance resonator

2011 ◽  
Vol 47 (5) ◽  
pp. 326 ◽  
Author(s):  
H.-W. Deng ◽  
Y.-J. Zhao ◽  
X.-S. Zhang ◽  
W. Chen ◽  
J.-K. Wang
Keyword(s):  
High Selectivity ◽  
Dual Band ◽  
Dual Mode ◽  
Stepped Impedance Resonator
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