Dual-band BPF with DSIR and TSIR

Deng, Hong‐Wei; Zhao, Yongjiu; Zhang, L.; Zhang, X.-S.; Zhao, Wei

doi:10.1049/el.2010.0995

Cited by 13 publications

(15 citation statements)

References 22 publications

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“…However, the resonant frequencies of the MMR are related and dependent, so it is difficult to achieve the adjustable FBWs with dual bands simultaneously. The other method is to combine two sets of different resonators with common input and output ports [2]. And the specification of the dual passbands can be individually met.…”

Section: Introductionmentioning

confidence: 99%

Compact inline dual-band dual-mode BPF with a hybrid structure of single-layered SIW and CPW

Zhu

Deng

Ding

et al. 2016

IEICE Electron. Express

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A compact inline dual-band dual-mode bandpass filter (BPF) using single-layered substrate integrated waveguide (SIW) is implemented by etching an H-shaped slot on the top surface of two adjacent rectangular cavities. The H-shaped slot consisted of two coplanar waveguide (CPW) resonators and two SIW cavities can achieve two adjustable transmission poles at the upper and lower passbands, respectively. Good lower stopband performance is inherited from SIW. Two transmission zeros can be generated by the cross coupling through the resonators which are not in resonance to obtain high isolation between passbands and sharp skirt. To validate the concept, a dual-band filter is designed and fabricated, and good agreements are obtained between measured and simulated results.

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Section: Introductionmentioning

confidence: 99%

Compact inline dual-band dual-mode BPF with a hybrid structure of single-layered SIW and CPW

Zhu

Deng

Ding

et al. 2016

IEICE Electron. Express

View full text Add to dashboard Cite

show abstract

“…In , a dual‐band BPF was realized by a cascade connection of a BPF and a bandstop filter, but this arrangement has the drawback of having a high insertion loss and a large circuit size. Luo and Deng demonstrated that the size problem can be overcome by combining two sets of independent resonators with common inputs and outputs; however, such structures are very complicated. Currently, stepped‐impedance resonators (SIRs) and open‐loop resonators have been extensively investigated due to their attractive features, which could be applied to a dual‐band BPF with a simple structure; nevertheless, the selectivity of some circuits still needs to be improved.…”

Section: Introductionmentioning

confidence: 99%

A compact dual‐band bandpass filter with high design flexibility using fully isolated coupling paths

Wang

Kim

2014

Micro & Optical Tech Letters

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A second‐order dual‐band bandpass filter using two outer folding open‐loop resonators and two embedded anchor‐shaped stepped impedance resonators is presented in this letter. The proposed scheme provides sufficient isolation between the two specific passbands, thus each passband can be individually turned. Electric couplings are adopted among the four resonators. By adjusting the spacing of resonators, the electric coupling of two different coupling feeding paths can be independently controlled, which allows flexible control of each bandwidth. The embedded structure which is introduced can further miniaturize the dimensions of the overall structure. In addition, the proposed filter has three transmission zeros at each passband, which exhibit high skirt selectivity. Good agreement between the simulated and measured results validates the correctness of the proposed design approach and shows that the two central frequencies of the fabricated filter are located at 2.5 and 5.1 GHz as desired, with 3 dB fractional bandwidths of 13.8 and 13.6%, respectively. The measured return losses are greater than 18.5 dB, while insertion losses are less than 0.9 dB in each of the two passbands. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:642–646, 2014

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“…, a dual‐band BPF was realized by a cascade connection of a BPF and a bandstop filter, but this arrangement has the drawback of a high‐insertion loss and a large circuit size. Luo and Deng demonstrated that the size problem can be overcome by combining two sets of independent resonators with common input and output; however, such structures are very complicated. Currently, stepped‐impedance resonators (SIRs) and open‐loop resonators have been extensively investigated due to their attractive features, which could be applied to a dual‐band BPF with a simple structure, nevertheless the selectivity of some circuits remains to be improved.…”

Section: Introductionmentioning

confidence: 99%

Compact and High‐Selectivity Dual‐Band Bandpass Filter with Tunable Passband for Wimax and Wlan Applications

Wang

Kim

2013

Micro & Optical Tech Letters

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A dual‐band bandpass filter with compact size and high‐selective performance is presented using the combination of an embedded double E‐type stepped‐impedance resonator and open‐loop resonators. The proposed dual‐band filter has the capability to achieve different passband frequencies, both resonance frequencies can be conveniently and independently controlled without enlarging outline circuit size, and four transmission zeros near the edges of the passband are achieved to obtain a high‐level selectivity. A comparison of simulated and measured results verifies the design and shows that two central frequencies of the fabricated filter are located at the desired 2.5 GHz (WiMax application) and 5.4 GHz (WLAN application) with 3 dB fractional bandwidths of 14.0 and 10.3%, respectively. The measured return losses are higher than 20 dB, whereas insertion losses are less than 0.9 dB in each of the two passbands. © 2013 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:2106–2110, 2013

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Dual-band BPF with DSIR and TSIR

Cited by 13 publications

References 22 publications

Compact inline dual-band dual-mode BPF with a hybrid structure of single-layered SIW and CPW

Compact inline dual-band dual-mode BPF with a hybrid structure of single-layered SIW and CPW

A compact dual‐band bandpass filter with high design flexibility using fully isolated coupling paths

Compact and High‐Selectivity Dual‐Band Bandpass Filter with Tunable Passband for Wimax and Wlan Applications

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