A compact UWB bandpass filter with a notched band using a multistubs loaded resonator

Zhang, Ting; Xiao, Fei; Bao, Jingfu; Tang, Xiaohong

doi:10.1002/mmce.21054

Cited by 3 publications

(7 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A comparison of the proposed wideband filter with other notched bandpass filters reported in the literature is summarized in Table I. Excluding the reported fractal filter designs (Church et al , 2010; Patin et al , 2010) that utilized low-cost (lossy) FR-4 substrate, all other designs (Zhu and Chu, 2013; Zhang et al , 2017; Yan et al , 2016; Li et al , 2015; Ghatak et al , 2011; Oh et al , 2014) employed high-cost (low-loss) substrates. As it can be seen, the proposed wideband fractal bandpass filter not only exhibits the advantage of compact size on FR-4 substrate but also has a favorable performance with the earlier designs.…”

Section: Resultsmentioning

confidence: 99%

“…A UWB bandpass ﬁlter is presented with triple notch bands at 4.08, 6.57 and 8.96 GHz based on parallel multi-mode resonators and CSRRs (Borazjani et al , 2014). Several methods have been studied and implemented in the design of planar microstrip wideband/UWB bandpass filter designs with stub-loaded resonators (Xu et al , 2012; Wang et al , 2013; Zhu and Chu, 2013; Zhang et al , 2017; Yan et al , 2016) to obtain notch band in desired positions but with lower rejection levels. UWB bandpass filter based on substrate-integrated waveguide technique with internal and lateral metallized vias is introduced by Li et al , 2015 with complex design configuration.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Fractal-based triangular bandpass filter with a notched band for interference rejection in wideband applications

Karthie

Salivahanan

2019

View full text Add to dashboard Cite

Purpose This paper aims to present the design of a novel triangular-shaped wideband microstrip bandpass filter implemented on a low-cost substrate with a notched band for interference rejection. Design/methodology/approach The conventional dual-stub filter is embedded with simple fractal-based triangular-circular geometries through various iterations to reject wireless local area network (WLAN) signals with a notched band at 5.8 GHz. Findings The filter covers a wide frequency band from 3.1 to 8.8 GHz and has a fractional bandwidth of 98 per cent with the lower passband of 57.5 per cent and upper passband of 31.6 per cent separated by a notched band at 5.8 GHz. The proposed wideband prototype bandpass filter is fabricated in FR-4 substrate using PCB technology and the simulation results are validated with measurement results which include insertion loss, return loss and group delay. The fabricated filter has a sharp rejection of 28.3 dB at 5.8 GHz. Measured results show good agreement with simulated responses. The performance of the fractal-based wideband filter is compared with other wideband bandpass filters. Originality/value In the proposed work, a fractal-based wideband bandpass filter with a notched band is reported. The conventional dual-stub filter is deployed with triangular-circular geometry to design a wideband filter with a notched band to suppress interference signals at WLAN frequency. The proposed wideband filter exhibits smaller size and better interference rejection compared to other wideband bandpass filter designs implemented on low-cost substrate reported in the literature. The aforementioned wideband filter finds application in wideband wireless communication systems.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Fractal-based triangular bandpass filter with a notched band for interference rejection in wideband applications

Karthie

Salivahanan

2019

View full text Add to dashboard Cite

show abstract

“…On the other hand, UWB communication system covers a very wide passband and is susceptible to the interferences from other wireless communication systems. Therefore, a UWB BPF with notched bands is needed urgently 4,5 . In Reference [6], a simplified composite right/left‐handed resonator was used in UWB BPF, which can achieve dual sharply notched bands.…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, a UWB BPF with notched bands is needed urgently. 4,5 In Reference [6], a simplified composite right/left-handed resonator was used in UWB BPF, which can achieve dual sharply notched bands. Compared with the single-end counterparts, balanced circuits are used more frequently because of their advantages of noise immunity and low-electromagnetic interference.…”

Section: Introductionmentioning

confidence: 99%

Design of balanced UWB BPF based on quint‐mode slotline resonator

Liu

Wei

et al. 2022

Int J RF Mic Comp-Aid Eng

View full text Add to dashboard Cite

In this paper, a quint-mode slotline resonator (QMSR) is analyzed and designed. The proposed resonator has similar performances to those of the conventional microstrip multimode resonator, while it is located at the bottom ground layer. To the best of our knowledge, this is the first time that QMSR is proposed. By properly adjusting the dimensions of the proposed QMSR, quasiindependent control of the five resonant frequencies is realized, thereby an ultrawideband (UWB) differential-mode (DM) transmission passband can be obtained. By employing balanced microstrip/slotline transition structure, a high and wideband common-mode (CM) suppression can also be realized, which is independent of the DM responses. Thereby, only the DM performances need to be considered, which simplify the design procedure greatly. In addition, one notched band is achieved to suppress the special electromagnetic interference. To validate the design concept, one prototype circuit of the proposed balanced UWB bandpass filter is implemented following the given design procedure. Good agreement between the measurement and simulation results can be observed.

show abstract

“…The first approach is additional notch resonators. [4][5][6][7][8] Terminated cross-shaped resonator realizes three fixed and reconfigurable notch bands. 4 In Reference [5], an inward folded resonator and two spiral resonators are implemented two notch bands in the UWB passband.…”

Section: Introductionmentioning

confidence: 99%

A single cavity wideband passband filter with a notched band

Zhang¹,

Yang²,

Liu³

et al. 2022

Int J RF Mic Comp-Aid Eng

View full text Add to dashboard Cite

This paper presents a wideband cavity filter with a notched band. The wideband bandpass characteristics are obtained by a cylindrical cavity with two symmetrical conductive posts. The notch with the center frequency of 2 GHz is obtained by loading two symmetrical notched elements, and the notched elements consist of a stepped impedance structure. In addition, the two symmetrical notched elements are loaded at the bottom of the cavity, similar to the two symmetrical conductive posts. The proposed filter's notched frequency and notched bandwidth can be controlled. The cavity filter is designed, manufactured, and tested to be demonstrated in this paper. The whole bandwidth of the filter is from 1.7 to 2.7 GHz, and the notched band is over a frequency range from 1.9 to 2.1 GHz. The exhibited performance of the filter verifies the proposed concept.

show abstract

A compact UWB bandpass filter with a notched band using a multistubs loaded resonator

Cited by 3 publications

References 14 publications

Fractal-based triangular bandpass filter with a notched band for interference rejection in wideband applications

Fractal-based triangular bandpass filter with a notched band for interference rejection in wideband applications

Design of balanced UWB BPF based on quint‐mode slotline resonator

A single cavity wideband passband filter with a notched band

Contact Info

Product

Resources

About