Quad‐band bandpass filter design by embedding dual‐band bandpass filter with dual‐mode notch elements

2014 ◽  
Vol 50 (23) ◽  
pp. 1719-1720 ◽  
Author(s):  
Chenwei Cui ◽  
Yun Liu
Keyword(s):  
Bandpass Filter ◽  
Filter Design ◽  
Dual Band ◽  
Dual Mode

scholarly journals Dual‐mode dual‐band bandpass filter design utilising cylindrical TM‐mode cavities

2021 ◽  
Vol 57 (8) ◽  
pp. 328-330
Author(s):  
Chad Bartlett ◽  
Michael Höft
Keyword(s):  
Bandpass Filter ◽  
Filter Design ◽  
Dual Band ◽  
Dual Mode ◽  
Tm Mode

Dual-mode dual-band bandpass filter design using open-loop resonators

2012 ◽  
Vol 54 (10) ◽  
pp. 2370-2372 ◽  
Author(s):  
Haiwen Liu ◽  
Yulong Zhao ◽  
Liyun Shi ◽  
Hui Luo
Keyword(s):  
Bandpass Filter ◽  
Filter Design ◽  
Open Loop ◽  
Dual Band ◽  
Dual Mode

scholarly journals A miniature fractal-based dual-mode dual-band microstrip bandpass filter design

2014 ◽  
Vol 7 (2) ◽  
pp. 127-133 ◽  
Author(s):  
Mushtaq Alqaisy ◽  
Chandan Chakrabraty ◽  
Jawad Ali ◽  
Adam R.H. Alhawari
Keyword(s):  
Bandpass Filter ◽  
Ring Resonator ◽  
Filter Design ◽  
Ground Plane ◽  
Split Ring Resonator ◽  
Dual Band ◽  
Defected Ground Structure ◽  
Dual Mode ◽  
Split Ring ◽  
Compact Size

In this paper, a fractal-based complementary split-ring resonator (CSRR) has been introduced as a defected ground structure (DGS) in the ground plane of a dual-mode microstrip bandpass filter to produce a new compact filter with dual-band response. The conventional double square ring resonator structure is modified such that its inner ring is made with a fractal shape instead of a square. Measured and simulation results show that the resulting filter offers a dual passband response; the higher passband is attributed to the dual-mode microstrip ring structure, whereas the lower passband is as a result of the embedded CSRR DGS structure. In addition, the results show that the position of the lower passband could be varied, to a certain extent, without affecting the position of the higher passband by applying higher fractal iteration levels to the inner split ring. These features, together with the compact size the proposed filter offers, make it suitable for use in a wide variety of dual-band communication applications. Measured results, carried out on filter prototypes, have been found in agreement with those theoretically predicted.

New dual-band bandpass filter design based on slotted ground structures

2011 ◽  
Vol 53 (7) ◽  
pp. 1505-1511
Author(s):  
Xiao-Hua Wang ◽  
Quan Xue ◽  
Kim Fung Man
Keyword(s):  
Bandpass Filter ◽  
Filter Design ◽  
Dual Band ◽  
Ground Structures

Compact dual-mode microstrip bandpass filter based on slotted square patch resonator

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Karthie S. ◽  
Zuvairiya Parveen J. ◽  
Yogeshwari D. ◽  
Venkadeshwari E.
Keyword(s):  
Bandpass Filter ◽  
Filter Design ◽  
Center Frequency ◽  
Dual Mode ◽  
Content Type ◽  
Transmission Zeros ◽  
Compact Size ◽  
Mode Response ◽  
Better Than ◽  
Good Agreement

Purpose The purpose of this paper is to present the design of a compact microstrip bandpass filter (BPF) in dual-mode configuration loaded with cross-loop and square ring slots on a square patch resonator for C-band applications. Design/methodology/approach In the proposed design, the dual-mode response for the filter is realized with two transmission zeros (TZs) by the insertion of a perturbation element at the diagonal corner of the square patch resonator with orthogonal feed lines. Such TZs at the edges of the passband result in better selectivity for the proposed BPF. Moreover, the cross-loop and square ring slots are etched on a square patch resonator to obtain a miniaturized BPF. Findings The proposed dual-mode microstrip filter fabricated in RT/duroid 6010 substrate using PCB technology has a measured minimum insertion loss of 1.8 dB and return loss better than 24.5 dB with a fractional bandwidth (FBW) of 6.9%. A compact size of 7.35 × 7.35 mm2 is achieved for the slotted patch resonator-based dual-mode BPF at the center frequency of 4.76 GHz. As compared with the conventional square patch resonator, a size reduction of 61% is achieved with the proposed slotted design. The feasibility of the filter design is confirmed by the good agreement between the measured and simulated responses. The performance of the proposed filter structure is compared with other dual-mode filter works. Originality/value In the proposed work, a compact dual-mode BPF is reported with slotted structures. The conventional square patch resonator is deployed with cross-loop and square ring slots to design a dual-mode filter with a square perturbation element at its diagonal corner. The proposed filter exhibits compact size and favorable performance compared to other dual-mode filter works reported in literature. The aforementioned design of the dual-mode BPF at 4.76 GHz is suitable for applications in the lower part of the C-band.

scholarly journals DUAL-BAND BANDPASS FILTER DESIGN USING STUB-LOADED HAIRPIN RESONATOR AND MEANDERING UNIFORM IMPEDANCE RESONATOR

2021 ◽  
Vol 95 ◽  
pp. 147-153
Author(s):  
Yun Xiu Wang ◽  
Yuan Li Chen ◽  
Wen Hui Zhou ◽  
Wei Chao Yang ◽  
Jin Zen
Keyword(s):  
Bandpass Filter ◽  
Filter Design ◽  
Dual Band ◽  
Hairpin Resonator
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